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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.

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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436 products found.

6R140/10R140 4X4 A.T. (EXTENDED)

Ford 6R140 or 10R140 4WD Extended to Atlas 43 spline input transfer case.
SKU: 50-6141

Starting at $69/mo with . Check your purchasing power

$756.00
excluding shipping

DODGE NP205 STOCK ADAPTER FIG8 TO CIRCULAR (6210) 29SPL

50-2801: Dodge NP205 stock Adapter large Bearing Index (6210)
SKU: 50-2801

Starting at $37/mo with . Check your purchasing power

$404.48
excluding shipping

SPACER ADAPTER TH350 REPLACING A 700R 1.875

GM 2WD TH350 AUTOMATIC REPLACING GM 700R4 4WD TRANSMISSION
SKU: 50-8506

Starting at $11/mo with . Check your purchasing power

$114.70
excluding shipping

TOY.L/C.19SP/GM V8 KIT(GM NV)

Adapts GM 32 Spline NV4500 to Chevy V8 small block & Toyota Land Cruiser 1980-1990 19 spline Transfer Case.
SKU: 27-0022G

Starting at $111/mo with . Check your purchasing power

$1,222.77
excluding shipping

4L80E RELUCTOR KIT ATLAS 4SP

Atlas 2 speed to 4L80E transmission spacer and reluctor adapter kit
SKU: 50-6410

Starting at $18/mo with . Check your purchasing power

$195.55
excluding shipping

MUNCIE X JEEP DANA 18/20-6 SPL

MUNCIE TO JEEP DANA 18/20 TRANSFER CASE
SKU: 50-0100

Starting at $66/mo with . Check your purchasing power

$724.50
excluding shipping

TH350 X TOYOTA P.U. 23 SPL

GM TH350 to Toyota truck 23 spline gear driven transfer case Adapter Kit
SKU: 50-5703

Starting at $56/mo with . Check your purchasing power

$619.48
excluding shipping

SCOUT TORQFLT X GM ENG. ADAP.

Scout TF727 Automatic Transmission to Pre 1986 GM V8 Adapter Kit
SKU: 712572-A

Starting at $43/mo with . Check your purchasing power

$470.23
excluding shipping

NV4500 TOY L/C 10SP SHORT STY

GM NV4500 4WD to Toyota Land Cruiser 10 spline transfer case adapter kit.
SKU: 50-0211

Starting at $64/mo with . Check your purchasing power

$709.06
excluding shipping

700R-4 X NP205 T/C(REPL.TH400)

GM 700R4 to GM NP205 Adapter Kit (replacing TH400)
SKU: 50-6902

Starting at $48/mo with . Check your purchasing power

$522.46
excluding shipping

C6 X JEEP DANA 18/20 6 SPLINE

Ford C6 3 speed automatic transmission to the Jeep Dana Spicer 18/20 transfer case (with 6 spline drive gear),adapter kit.
SKU: 50-3300

Starting at $64/mo with . Check your purchasing power

$709.06
excluding shipping

TH350/NP231-21T upgrading to 95 and newer 23 spl.

GM 4wd TH350 to Jeep NP231 Adapter Kit (Peugot 21 Spline)
SKU: 50-6306A

Starting at $52/mo with . Check your purchasing power

$573.30
excluding shipping
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