Advance Adapters GM TH350 Transmission To Dana 300 or NP231 23 SplineTransfer Case Adapter - 50-6304

80-86 CJ with Dana 300 transfer case;87-95 Wrangler YJ with 23 spline NP231;73-85 GM TH350 4WD transmission;Some applications require driveline modifications;Includes all mounting hardware; California Residents: WARNING This kit is for use with 1973-85 GM TH 350 4 wheel drive transmission and requires driveline modifications. Adapter thickness is 3.650. Kit includes new mainshaft and mounting hardware. Additional parts required: part #716021 transfer case mount for CJ or #716008 transfer case mount for YJ, #716010 vacuum modulator, #715523 transfer case shifter bracket and #G104 Chevy small block flexplate 283-350. Kit fits 1980-86 CJ Dana 300 transfer case and 1987-95 YJ New Process transfer case with 23 spline input shaft.
503.99 USD
Advance Adapters TJ Rubicrawler - RUBI-TJ

Fits all Jeeps 2003 to 2011 with the 42RLE automatic overdrive;Replaces the stock 42RLE tailhousing with a 6 gear planetary reduction box featuring a 2.72 low range;True, bolt-in doubler that couples to the stock Jeep transfer case or an existing Atlas transfer case;Increases your available gear ratios;Includes 42R800 Rubicrawler Electronic Interface and 42R650 Anodized Billet Aluminum Knobs; California Residents: WARNING This reduction unit replaces the stock 42RLE tailhousing with a 6 gear planetary reduction box featuring a 2.72 low range. This is a true, bolt-in doubler that couples to the stock Jeep transfer case or an existing Atlas transfer case. Features: The RubiCrawler increases your available gear ratios. This allows you to choose the appropriate gear, depending on the terrain in which you're wheeling. Proper gear choice will allow you more control of the vehicle. Ultimately, this contributes to a fun, and safe, offroading experience, even in extreme environments. Options: TJ Wrangler - Stock Transfer Case: This is the option for customers installing the Rubicrawler in conjunction with the stock NP231 or NP241OR transfer cases that came with the vehicle from the factory. JK Wrangler - With Heavy Duty Transfer Case Shift Kit: This is an option for customers installing the Rubicrawler in the Jeep JK Wrangler. The Shifter in this kit upgrades your transfer case shift cable along with the cable connections to heavy duty heim joint style connection.
2284.99 USD
Advance Adapters GM SM420 Transmission To Dana 18/20 Transfer Case - 50-2401

6 spine drive gear;GM SM420;4 Speed;Maunal;Stud shaft design; California Residents: WARNING Our GM SM420 adapter to the Dana 18 / 20 is 4.00 inch in length. The adapter material is 356 T-6 heat treated aluminum alloy, and the adapter has a provision for a transmission mount. Our kit will include a adapter housing, spud shaft with 6 spline for drive gear, mount block, set collar, gaskets, seal, nylon lock nut, fastening hardware and adapter instructions. This adapter assembly will fit any Dana Spicer 18 / 20, Scout version with a 6 tooth female drive gear. The transfer case index to the new adapter will require an index retainer & sealed bearing. Please I.D. the transfer case bore size (3-1/8 inch) small hole or (4 inch) large hole for proper retainer. Additional information can be obtained in our on-line catalog, Jeep & Scout Vehicle Section: Transfer Case Information, Jeeps 1941-79. The kit is designed for exclusive use with the GM SM420 4 speed transmission. The SM420 was used in GM trucks 1947 to 1968 and has a 10 spline output shaft and was used in both 2wd and divorced 4wd applications. Required Options ADV716001 Large Hole Retainer or ADV716002 Small Hole Retainer
523.99 USD
Advance Adapters GM TH350 Transmission To NP231 Transfer Case 23 Spline Adapter - 50-6308

87-99 Wrangler TJ/YJ;89-99 Cherokee XJ;89-92 Comanche;93-97 Grand Cherokee ZJ;Replaces AX15 transmission;Includes adapter, spud shaft, ball bearing, 2 snap rings, o-ring, gaskets, nuts, lock washers, stud bolts; California Residents: WARNING GM automatic TH350 to MP231 transfer case adapter. GM automatic four wheel drive transmission to transfer case adapters with factory 4 wheel drive mainshaft 1989-95 YJ Wrangler replacing an AX15 transmission with 23 spline output shaft (transmission mainshaft not included). For use with New process 231 transfer case.
503.99 USD
Advance Adapters GM TH400 Transmission To Dana 300 Transfer Case - 50-6400

80-86 CJ;TH400;Dana 300 transfer case; California Residents: WARNING For use with 1965-88 GM or AMC TH 400 transmission and will require driveline modifications. This kit fits 1980-86 Dana model 300 transfer cases. This driveline combination may be too long for use in CJ5 applications. Adapter thickness is 4.232. Includes new output shaft and mounting hardware. Additional parts needed: part #716021 transfer case mount, #716010 vacuum modulator and #G104 Chevy small block flexplate 283-350. This adapter kit requires disassembly of transmission for shaft change.
530.99 USD
Low Range Offroad 4.16:1 Transfer Case Gear Kit - STC-416N

New precision cut gears;New counter shaft;Needle bearing;Shims;O-ring;Gasket kit;Trail-Safe input and output seals; California Residents: WARNING Samurais are incredibly capable off-road. Unfortunately they are limited by their minuscule 26-inch diameter tires. Even small jumps in tire size result in terrible high range gearing. You may even lose the ability to use 5th gear on the road. Luckily the Samurai has a very unique transfer case that is easy to re-gear with near stock high range and very deep low range gears. Lower low range gears (numerically higher ratio) are essential for rock crawling. Our 4.16:1 gears reduce low range by 84 percent while high range is reduced only 12 percent. That high range reduction is the sweat spot for 29-inch to 30-inch tires. Choosing the right material for our gears was our top priority. Gears that perform well under load and street driving require a high-quality steel alloy material. We chose Japanese alloy SCM415 for its great strength and wear resistance. SCM415 outperforms the 8620 material in yield and ultimate tensile strength resulting in a gear that is less prone to chipping or cracking. SCM415 also retains its strength under high-temperature use. High carbon materials such as SCM420 or 8620 are not the best choice in our experience and opinion as they do not carburize as well and can become brittle. Note: The recommended tire size for the 4.16 gears is 29 inch-30 inch Please Note: Non-USA Models may need a new US Specific Low Speed Output Gear
478.80 USD
Advance Adapters GM 4L60E Transmission To Atlas 4 Speed Transfer Case Adapter - 50-9305

Adapter is only 1.625 inch in length;Includes a GM VSS kit incorporated within;Exclusive use with the late Model 4L6; California Residents: WARNING Get shorty again! We have just released the super short 4L60E to Atlas 4 speed transfer case adapter assembly. The adapter is only 1.625 in length and includes a GM VSS kit incorporated within. This adapter assembly is for exclusive use with the late model 4L60E with a removable bell housing and includes a new 300M billet output shaft. We also include a heavy-duty transmission mount that bolts to our adapter housing. This adapter assembly can also be used with the Jeep New Process 231, 242, 247, 249, and 2410 Rock-Trac transfer cases.
581.99 USD
Advance Adapters GM 4L60E Transmission To NP231 23 Spline Transfer Case Adapter - 50-0402

Transfer Case: Jeep NP231 (23 spline) [AX-15]Jeep NP231 (23 spline) [NV3550 and TF999];Transmission:GM 4L60, GM 4L60E Early Model (1992-1997) and GM 700R4; California Residents: WARNING The GM 4L60E adapter to the Jeep 23 spline NP231 is 3.600 inch in length. And the overall length of the transmission and adapter is 26.975 inch. Adapter material is 356 T-6 heat treated aluminum alloy. The adapter has a provision for a transmission mount. The adapter kit includes an adapter housing, 4L60E 23 spline output shaft, GM VSS sensor, reluctor ring, O-ring, gasket, fastening hardware, and adapter instructions. This adapter assembly will fit any Jeep New Process transfer case with a 23 spline input shaft. New Process transfer cases with a long 23 spline input (2.120 inch), will need to be shortened so that it protrudes (1.5 inch) from the front of the transfer case. The adapter kit is designed for exclusive use with any GM 4L60E with a non-removable bellhousing. The GM 4L60E adapter to the Jeep 23 spline NP231 is 3.600 inch in length. And the overall length of the transmission and adapter is 26.975 inch. Adapter material is 356 T-6 heat treated aluminum alloy. The adapter has a provision for a transmission mount. The adapter kit includes an adapter housing, 4L60E 23 spline output shaft, GM VSS sensor, reluctor ring, O-ring, gasket, fastening hardware, and adapter instructions.
523.99 USD
Advance Adapters GM 4L80E Transmission to Dana 300 21 Spline Transfer case Adapter - 50-0432

21 spline input shaft; California Residents: WARNING This adapter assembly includes a new Dana 300 input shaft with 27 spline and replaces the existing stock Dana 300 input shaft. The GM 4L60E / 4L65E adapter to the Jeep Dana 300 is 4.00 inch in length. And the overall length of the transmission and adapter is 25.875 inch. Adapter material is 356 T-6 heat treated aluminum alloy. The adapter has a provision for a transmission mount. The adapter kit includes an adapter housing, adapter ring, new Dana 300 input shaft with 27 splines, GM VSS sensor, reluctor ring, O-ring, gasket, fastening hardware, and adapter instructions. Transfer Case: Jeep Dana 300. Transmission: GM 4L60E Late Model (1997-2007).
607.99 USD
Rugged Ridge Mega-Short SYE Replacement Yoke - 16580.67

Replacement yoke; California Residents: WARNING Over time, your slip yoke eliminator yoke can wear out or break. Now offered as a separate component, this Mega Short slip yoke eliminator yoke from Rugged Ridge offers a reliable replacement. This replacement yoke only fits the Rugged Ridge 18676.72 Mega Short SYE kit.
69.99 USD
Advance Adapters GM TH700R Transmission To NP231 23 Spline Transfer Case Adapter - 50-9102

Adapts GM 700R4 to Jeep NP231 transfer case;adapter to the Jeep New Process 231 is 1.50 in length;Material is 356 T6 heat treated aluminum alloy and has a provision for a transmission mount;Kit includes an adapter housing, new 23 spline 700R4 output shaft, bearing, snap rings, o-ring, seal, gasket, fastening hardware and adapter instructions; California Residents: WARNING Advance Adapter The 700R automatic transmission adapter to the Jeep New Process 231 is 1.50? in length. The adapter material is 356 T6 heat treated aluminum alloy and has a provision for a transmission mount. The adapter kit includes an adapter housing, new 23 spline 700R4 output shaft, bearing, snap rings, o-ring, seal, gasket, fastening hardware and adapter instructions. Transfer Case The adapter assembly will fit the Jeep NP231 transfer case with a 23 spline input shaft. Introduced in 1988, the Jeep NP231 is a part-time transfer case became the standard for XJ and YJ models. It was also used in six cylinder ZJ models through 1995. Chain driven with a 2.72:1 low range, it's reliable even with more than stock horsepower applied. The Advance Adapter kit is designed to fit Jeep New Process 231, 242, 247, 249, and 2410 Rock-Trac transfer cases. Transmission This kit is designed for exclusive use with the 700R-4 / 4L60 / 4L60E. The overall case length of the transmission is 23.375?, has non-removable bell housing, and a 4 bolt square rear case. Late model 4L60E automatics will have removable bell housing and a 6 bolt hex pattern rear case.
476.99 USD
Advance Adapters GM TH700R 2 WD Transmission To Dana 300 Transfer Case Adapter - 50-6303

With Dana 300 transfer case;To adapt 2WD GM 700R;May require transfer case adapter crossmember kit part 716021; California Residents: WARNING Our adapters will adapt a GM automatic transmission to your Jeep transfer case. This kit adapts GM 700R-4 automatic transmission to Dana Model 300 transfer case. Kit includes: adapter housing, spud shaft, main shaft, bearing, mounting hardware and instructions.
530.99 USD
Advance Adapters GM SM420 Transmission To Dana 300 Transfer Case Adapter - 50-9702

SM420;Dana 300 transfer case; California Residents: WARNING 10.5 case length, 5.25 adapter. Adapts a GM SM420 4 speed with a case length of 10.5 to a Dana 300 23 spline. From 1980-86 and will also adapt the same transmission to a NP231 transfer case flush 23 spline from 1987-04 that originally had a 999, 904 or a NV3550 transmission.
523.99 USD
Advance Adapters Low Range Switch - 300378A

07-11 Wrangler JK, 2 & 4 Door;03-06 Wrangler TJ;Rubicon models only;NP271 transfer case;Allows you to use low range in 2WD; California Residents: WARNING This kit is a quick fix for the Jeep TJ Rubicons, JKs & Power Wagons. This kit tells the computer system that the vehicle is in low ratio, disabling the ESP on JKs and enabling the locker option on the TJ Rubicons & Power Wagons. This kit will not light the 4WD dash light in high range. It will work on the Jeep JKs, however, Kit 300377A is a control module that keeps all the stock Jeep functions as well as the dash light in 4WD high. The 300377A is the most recommended kit for the Jeep JKs.
43.68 USD
Advance Adapters 42RLE Rubicrawler Crawler Box - RUBI-JKAD

Installs Between Transmission And Transfer Case;Provides Additional 2.72 Low Range;Includes Twin Stick Shifter;For Use In Jeep Jk Model Only;Requires Use Of ADV42R800 Computer Module;Does Not Include Shifter Knobs;For Use With 42RLE Automatic Transmission And NV241 Transfer Case; California Residents: WARNING The RubiCrawler increases our available gear ratios allowing you to gear your Jeep to the terrain in which you are wheeling on. The various ratios will allow you more control of the vehicle which results in extreme off road performance while maintaining a fun and safe off-roading experience.
2601.99 USD
Advance Adapters GM 4L60E Transmission to NP231 23 Spline Transfer Case - 50-0430

87-18 Wrangler, 2 & 4 Door;84-01 Cherokee XJ;86-92 Comanche MJ;93-04 Grand Cherokee;97-Current GM 4L60E/4L65E 4 speed automatic transmission to the Jeep NP231 transfer case with 23 spline inputs; California Residents: WARNING This adapter assembly includes a new 4L60E / 4L65E output shaft. This adapter kit provides the shortest overall length possible! The 4L60E hex bolt adapter to the Jeep 23 spline New Process transfer case is 3.00 in length. And the overall length of the transmission and adapter is 24.875 inch. Adapter material is 356 T-6 heat treated aluminum alloy. The adapter has a provision our H.D. transmission mount. The adapter kit includes a 2 piece adapter housing, 4L60E 23 spline output shaft, GM VSS sensor, reluctor ring, O-ring, gasket, fastening hardware, and adapter instructions. This adapter assembly will fit the Jeep New Process transfer case with a 23 spline input shaft. The adapter kit is designed for exclusive use with the 1997 & up GM 4L60E/4L65E with a removable bellhousing.
622.99 USD
Advance Adapters Dana 300 Rotation Kit for AX-15 - 50-8603

80-86 CJ;AX15 transmission;Dana 300;23 splines;Floorboard and shifter modification may be required; California Residents: WARNING *Dana 300 must be used with a passenger side front axle. Since ground clearance is a concern for most vehicles, Advance Adapters has developed a rotation kit to allow the Dana 300 to be clocked at a higher than stock rotation. The kit allows up to four different rotations than stock. The adapter is .75 thick and includes a new longer input shaft for the Dana 300. The kit retains the proper spline engagement and proper indexing for the Dana 300 transfer case. Kit works on all Jeep Dana 300s with a 23 spline input. Will not work with adapter kits that use a 27 or 32 spline input into a Dana 300. Floorboard and shifter modification may be required.
174.99 USD
Advance Adapters GM 4L60E Transmission 4WDTo NP231 Transfer Case Adapter - 50-0434

1997 to current GM 4L60E/4L65E 4wd to NP231 transfer case; California Residents: WARNING The 4L60E hex bolt adapter to the Jeep New Process NP231 transfer case is 4.00 in length. And the overall length of the transmission and adapter is 25.875 inch. Adapter material is 356 T-6 heat treated aluminum alloy. The adapter has a provision our H.D. transmission mount. The adapter kit includes a 2 piece adapter housing, Jeep NP231 input gear that is 27 splines , GM VSS sensor, reluctor ring, O-ring, gasket, fastening hardware, and adapter instructions. Transfer Case: Jeep NP231 (21 spline) [AX5], Jeep NP231 (21 spline) [Peugeot], Jeep NP231 (23 spline) [AX15] and Jeep NP231 (23 spline) [NV3550 and TF999]. Transmission: GM 4L60E Late Model (1997-2007).
607.99 USD
Low Range Offroad Transfer Case Counter Shaft Kit - STC-CSK

OEM-quality replacement countershaft with only the best OEM-spec bearings;Countershaft;2 countershaft bearings;Countershaft O-ring;2 countershaft thrust washers; California Residents: WARNING Countershaft ruined somehow? Replace it! The countershaft and its bearings are at the heart of your transfer case rebuild. Using inferior components when you rebuild your t-case is a waste of time and money. Low range offer an OEM-quality replacement countershaft with only the best OEM-spec bearings.
53.80 USD
Advance Adapters GM TH400 Transmission To NP231 Transfer Case Adapter - 50-6402

TH400 2WD and 4WD;NP231;Case length is 24.25 inch and adapter is 1.2; California Residents: WARNING Output shaft may need to be shortened or a 1 spacer adapter may need to be used, part #510404). New transmission output shaft must be installed. Case length is 24.25 and adapter
488.99 USD
Advance Adapters GM TH700R/4L60 Transmission To NP231 Transfer Case Adapter - 50-9105

97-04 Wrangler TJ/LJ;97-01 Cherokee XJ;Replaces AX5 transmission, AX15 transmission, NV3550 and Torqueflite 999 transmissions; California Residents: WARNING This kit comes with new transfer case input gear. Uses stock 4WD output shaft. Fits NP231 transfer case only. Transfer cases up to 1994 use a different input gear than the 1995 and later model NP231s. Case length in 4WD transmission only is 23.375 and adapter is 2.5.Image shown for illustration purposes only.
476.99 USD
Advance Adapters GM 4L60E Transmission 4WD To NP231 32 SplineTransfer Case Adapter - 50-0435

1997 to current GM 4L60E/4L65E 4wd to NP231 transfer case; California Residents: WARNING The 4L60E hex bolt adapter to the Jeep New Process transfer case is 4.00 in length. And the overall length of the transmission and adapter is 25.875 inch. Adapter material is 356 T-6 heat treated aluminum alloy. The adapter has a provision our H.D. transmission mount. The adapter kit includes a 2 piece adapter housing, Jeep NP231 input gear that is 27 splines , GM VSS sensor, reluctor ring, O-ring, gasket, fastening hardware, and adapter instructions. Transfer Case: Jeep NP231 (21 spline) [AX5], Jeep NP231 (23 spline) [AX15] and Jeep NP231 (23 spline) [NV3550 and TF999]. Transmission: GM 4L60E Late Model (1997-2007).
607.99 USD
Advance Adapters GM 4L60E Transmission To NP231 21 Spline Transfer Case Adapter - 50-0431

4L60E 2WD and 4WD with removable bellhousing;NP231 21 spline transfer case adapters;Adapter length is 3; California Residents: WARNING Adapter length is 3. Complete transmission to transfer case adapter.Image shown for illustration purposes only.
610.99 USD
Low Range Offroad 4.90:1 Transfer Case Gear Kit - STC-491N

(3) New precision cut gears;Counter shaft;Needle bearings;Shims;O-ring, gaskets;Input/output seals; California Residents: WARNING Low range gears are critical for technical off-road driving. Our Samurai low range gear kit is the highest quality gear set available. Low Range reduction is 4.90:1 (115 percent low range reduction). High range reduction is 16 percent. No welded or second rate, gears here. These are strong, run quiet and take a huge amount of abuse. This complete kit includes three new precision cut gears, counter shaft, needle bearings, shims, o-ring, gaskets, and input/output seals. Heavy duty front output shaft recommended for tires 31 inch and bigger. 12 Month Limited Warranty. Fits 1986-1995 Suzuki Samurai's. Made by Trail-Gear. No cores are required Free Parts Included Complementary of Low Range Off Road: 1 Free Low Range Off Road Lifetime Nylatron Transfer Case Shifter Sheet Fits: 1986-1995 Suzuki Samurai Suzuki Sierra Suzuki Jimny Holden Drover Maruti Gypsy Suzuki SJ413
598.80 USD
Advance Adapters GM TH400 Transmission To Dana 20 Transfer Case Adapter - 50-0500

72-79 CJ;AMC TH400 to Jeep Dana 20;Replacement factory adapter assembly; California Residents: WARNING On all Jeep vehicles that were equipped with the AMC TH400 and Dana 20 transfer case, this adapter kit is designed to replace the original Jeep adapter. The factory adapter assembly is considered weak and prone to breaking. The individual components of our Advance Adapter kit will not work with the stock Jeep adapter parts. The adapter material is 356 T-6 heat treaded aluminum alloy. The adapter will retain the original Jeep transmission mount and is identical in length. The adapter kit includes a adapter housing, new 15 teeth coupler shaft, bearing, snap rings, gaskets, seal, fastening hardware, and adapter instructions.
544.99 USD
Advance Adapters Atlas Control Module - 300377A

07-18 Wrangler JK, 2 & 4 Door;Works with Atlas 2-speed transfer case;Can be used on a 4-speed case but there is no provision to connect an additional low range switch in the planetary housing;For cases built after August 2014; California Residents: WARNING The JK control module is the only way of keeping all the stock functions operational when upgrading to an Atlas transfer case. This Module lights the dash lights in both high and low range as well as the settings on the ESP when in 4WD and lockers and swaybar disconnect on the Rubicon models. This kit is designed for the Atlas 2 speed but can be used on a 4 speed, However, the is no provision to connect an additional low range switch in the planetary housing. NOTE: This Kit ( is for use on Vehicles with Atlas Transfer Case Production date of August 2014 and Later. If your Atlas production date is previous to August 2014, you will need part number PN300377.
430.99 USD
Advance Adapters GM TH350 4WD Transmission To NP231 21Spline Transfer Case Adapter - 50-6306

This kit is for 4WD GM TH350 transmissions; California Residents: WARNING This adapter does not include the mainshaft. This kit is for 4-Wheel drive GM TH350 transmission. This kit is specifically designed for Peugeot transmission replacement.
538.99 USD
Advance Adapters GM TH350 Transmission To Dana 18/20 Transfer Case Adapter - 50-3000

GM TH350 3 speed, 2wd automatic transmission to the Jeep/Scout Dana 18 and 20 transfer case;Transfer Case: Jeep Dana Spicer 18 or 20 (6 spline input);Transmission: GM TH350 (2wd); California Residents: WARNING The GM TH350 adapter to the Dana 18 / 20 is a short 1.850. And the overall length of transmission and adapter is 23.35. The adapter material is 356 T-6 heat treated aluminum alloy and the adapter has a provision for a transmission. The adapter kit includes a adapter housing, new 4wd TH350 output shaft, 6 spline spud shaft, nylon bushing, bearing, snap ring, O-ring, seal, gasket, fastening hardware and adapter instruction. This adapter assembly will fit any Dana Spicer 18 / 20, Scout version with a 6 tooth female drive gear. The transfer case index to the new adapter will require an index retainer & sealed bearing. Please I.D. the transfer case bore size (3-1/8) small hole or (4) large hole for proper retainer. Additional information can be obtained in our on-line catalog, Jeep & Scout Vehicle Section: Transfer Case Information, Jeeps 1941-79.This adapter kit is designed for exclusive use with the 2wd GM TH350 automatic transmission. This GM automatic was commonly found stock in vehicles from 1969-81. It was used in both pickups and car applications. On 2wd transmissions, GM used three different tail housing lengths. These lengths of the tail housing are 6, 9, and 12. The output shaft length corresponds with these tail housing lengths.
530.99 USD
Advance Adapters Atlas Control Module - 300377

07-18 Wrangler JK, 2 & 4 Door;Works with Atlas 2-speed transfer case;Can be used on a 4-speed case but there is no provision to connect an additional low range switch in the planetary housing;For cases built prior to August 2014; California Residents: WARNING The JK control module is the only way of keeping all the stock functions operational when upgrading to an Atlas transfer case. This Module lights the dash lights in both high and low range as well as the settings on the ESP when in 4WD and lockers and swaybar disconnect on the Rubicon models. This kit is designed for the Atlas 2 speed but can be used on a 4 speed, However, the is no provision to connect an additional low range switch in the planetary housing.
441.99 USD
Advance Adapters GM TH350 Transmission To Dana 18/20 Transfer Case Adapter - 50-3001

41-79 CJ;GM TH350 3 speed, 4wd automatic transmission to the Jeep/Scout Dana 18 and 20 transfer case (with 6 spline drive gear) adapter kit;Transfer Case: Jeep Dana Spicer 18 or 20 (6 spline input);Transmission: GM TH350 (4wd); California Residents: WARNING The GM TH350 adapter to the Dana 18 / 20 is a short 1.850 inch and the overall length of transmission and adapter is 23.35 inch. The adapter material is 356 T-6 heat treated aluminum alloy and the adapter has a provision for a transmission. The adapter kit includes a adapter housing, 6 spline spud shaft, bearing, snap ring, O-ring, seal, gasket, fastening hardware and adapter instruction. This adapter assembly will fit any Dana Spicer 18 / 20, Scout version with a 6 tooth female drive gear. The transfer case index to the new adapter will require an index retainer & sealed bearing. Please I.D. the transfer case bore size (3-1/8 inch) small hole or (4 inch) large hole for proper retainer. Additional information can be obtained in our on-line catalog, Jeep & Scout Vehicle Section: Transfer Case Information, Jeeps 1941-79.This adapter kit is designed for exclusive use with the 4wd GM TH350 automatic transmission. This GM automatic was commonly found stock in vehicles from 1969-81. The Turbo Hydramatic 350 three speeds automatic is one of the most transmissions available in GM 4x4 trucks. The stock 4wd output shaft protrudes from the back of the case approx 1 inch. 1980-81 model TH350 4wd output protrudes out 2.750 inch. And this TH350 also uses a lock-up torque convert, and was always used with an aluminum transfer case.
488.99 USD
Advance Adapters GM TH350 Transmission To Dana 300 Transfer Case Adapter - 50-6300

80-86 CJ;69-86 GM TH350 2WD transmission;Kit requires disassembly of TH350 for installation of new output shaft; California Residents: WARNING For use with 1969-86 GM TH 350 2 wheel drive transmission and will require driveline modifications. This kit fits only Dana model 300 transfer cases. Adapter thickness is 3.650. Includes new mainshaft and mounting hardware. Additional parts needed: part #716021 transfer case mount, #G104 Chevy small block flexplate 283-350 and #716010 vacuum modulator. Kit requires disassembly of TH350 for installation of new output shaft.
538.99 USD
Advance Adapters GM SM420 Transmission To Dana 18/20 Transfer Case Adapter - 50-2400

Fits Jeep dana 18/20 transfer case;6 spine drive gear;GM SM420;4 speed;Maunal;New SM420 main shaft design; California Residents: WARNING This adapter kit includes a new SM420 output shaft!! Our GM SM420 adapter to the Dana 18 / 20 is 4.50 in length. The adapter material is 356 T-6 heat treated aluminum alloy, and the adapter has a provision for a transmission mount. Our kit will include a adapter housing, new transmission main shaft, mount block, gaskets, seal, nylon lock nut, and adapter instructions. This adapter assembly will fit any Dana Spicer 18 / 20, Scout version with a 6 tooth female drive gear. The transfer case index to the new adapter will require an index retainer & sealed bearing. Please I.D. the transfer case bore size (3-1/8) small hole or (4) large hole for proper retainer. Additional information can be obtained in our on-line catalog, Jeep & Scout Vehicle Section: Transfer Case Information, Jeeps 1941-79. The kit is designed for exclusive use with the GM SM420 4 speed transmission. The SM420 was used in GM trucks 1947 to 1968 and has a 10 spline output shaft and was used in both 2wd and divorced 4wd applications. Required Options ADV716001 Large Hole Retainer or ADV716002 Small Hole Retainer, ADV716302 Sealed Bearing
540.99 USD
Advance Adapters Transfer Case Clocking Ring - 50-8604

Fits all transmissions that bolt to a Jeep Dana 300; California Residents: WARNING *Includes new input shaft. Since ground clearance is a concern for most vehicles, Advance Adapters has developed a rotation kit to allow the Dana 300 to be clocked at a higher than stock rotation. The kit allows up to four different rotations than stock. The adapter is .75 thick and includes a new longer input shaft for the Dana 300. The kit retains the proper spline engagement and proper indexing for the Dana 300 transfer case. Kit works on all Jeep Dana 300s with a 23 spline input. Will not work with adapter kits that use a 27 or 32 spline input into a Dana 300. Floorboard and shifter modification may be required.
244.99 USD