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Four-Wheel Drive Adapters

Repairing, restoring and customizing a 4WD vehicle is always easier with the right adapters. If you’re using components that didn’t come stock with a truck or SUV, adapters are necessary to connect them to the OEM parts — or other aftermarket upgrades. Since 1971, Advance Adapters has been developing quality conversion products made in the U.S. Shop hundreds of 4WD adapters for Jeeps, Fords, Chevys and other popular off-road vehicles.

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Off-Road Adapter Kits

We offer 4WD adapter kits and parts for almost any DIYU project. Use transmission-to-transfer case adapters and engine-to-transmission adapters to mate a variety of popular components, such as connecting a GM TH350 transmission to a Jeep Dana 300 transfer case. Our team has also put together 4WD conversion packages that include the hardware and accessories needed to install new transmissions. With retrofit kits, you can add an AX15, NV4500, NV3550 and other transmissions to your existing engine while utilizing the available space.

4WD Adapter Hardware

If a part has failed within your current conversion, you don’t need to replace the entire assembly. Individual hardware and accessories are available to fix your custom vehicle at a fraction of the price. Shop spline outputs and inputs, couplers, gears, seals and other components made of premium materials. Some of these parts also can be used to r fine-tune your setup for the right amount of power and torque. Use the search options to find adapters that fit your goals or call to speed with a four-wheel drive expert. We provide leading customer service to support our leading conversion products.

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TH350 2WD X JEEP NP231 95 &UP

GM 2WD TH350 to New Process 231 spline transfer case 1995 & NEWER Adapter kit (1.5 long)

$589.95
excluding shipping
50-6802

700R-4 X JEEP NP231 23T (AX15)

GM 700R4 to Jeep NP231 Adapter Kit (replacing AX15)

$515.00
excluding shipping
50-9102

NP435/TOYOTA TRK 21 TOOTH

Ford NP435 to Toyota truck 21 Spline Adapter Kit

$588.58
excluding shipping
50-5804

TH400/JEEP NP 23T(THIN)1987-94 NP231

GM TH400 to New Process 231 transfer case Adapter kit (1.25 long)

$515.00
excluding shipping
50-6402

GM SM465 4WD/JEEP NP231 23TH

GM SM465 4WD to Jeep NP231

$566.48
excluding shipping
50-9808

JEEP T-15 3SP LATE FORD V8

Ford V8 to Jeep T15 and T14 Transmission Adapter Kit

$331.06
excluding shipping
712511

FORD NP205-29SPL INPUT TO FIT GM 6L90 29 SPL TRANS

 GM 4WD 6L80E / 6L90E 6 Speed Automatic Transmissions to Ford NP205 Transfer case.

$720.36
excluding shipping
50-9550A

GM NV4500 TO NP205 TC 27 SPL

GM NV4500 4WD to GM NP205 w/27 spline male input, figure 8 bolt battern, transfer case adapter kit. (repl.TH350)

$662.17
excluding shipping
50-0218

NP435/TOYOTA TRK 23 TOOTH

Ford NP435 to Toyota truck 23 Spline Adapter Kit

$588.58
excluding shipping
50-5803

GM V8 TO NISSAN PATROL MANUAL, 168-MFK605C168

GM V8 TO NISSAN PATROL MANUAL, 168-MFK605C168

$1,044.35
excluding shipping
6245-011

TH400 X JEEP DANA 18/20-6 SPL

GM TH400 automatic transmission to the Jeep Dana 18/20 transfer case (with 6 spline drive gear), adapter kit.

$566.48
excluding shipping
50-1300

GM SM465 2WD/JEEP DANA 300 SHT

GM SM465 2WD to Jeep Dana 300 T/C

$566.48
excluding shipping
50-9807
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