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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.

MARKS L/C LS GEN 3 BHSG CONV. KIT

Marks 4wd Land Cruiser stock 4 & 5 SP to Chevy LS Engine Conversion kit
SKU: 713027-EK

$2,964.00
excluding shipping

GEN-3 VORTEC TH400 AUTO TRANS

LS-Series Engine to TH400 Flexplate Kit
SKU: 712500A4

$185.85
excluding shipping

6R80 TO ATLAS ADAPTER

Ford 6R80 & 10R80 to Atlas 31 spline input transfer case.
SKU: 50-3900

$456.75
excluding shipping

GM NV4500 TO GM NP205 CIRCULAR T/C

GM NV4500 4wd to GM NP205 Circular 6 bolt pattern
SKU: 50-6911

$160.65
excluding shipping

JEEP AX15/GM 168T FLYWHEEL

Chevy V8 & V6 to Jeep Wrangler AX15, adapter bellhousing kit.
SKU: 712567V

$516.60
excluding shipping

ALLISON 1000 (GM) 29 SPL. TO GM NP205

50-9421 - ALLISON 1000 Automatic Transmission to 1985-91 GM Round Bolt Pattern NP205 Transfer Case Adapter
SKU: 50-9421

$589.00
excluding shipping

STOCK GM TH350-NP205

GM NP205 Stock replacement adapter housing for TH350 transmissions.
SKU: 50-5302

$298.56
excluding shipping

TH350 X NP205 10SPL. COUPLER

Hybrid coupler sleeve for GM NP205 transfer case. Coupler has 27 spline transmission to 10 Spline Transfer Case
SKU: 50-5304

$167.96
excluding shipping

TOYOTA P/U REDUCTION HOUSING

Heavy Duty Toyota Truck gear driven transfer case gear reduction housing.
SKU: 51-5911

$223.90
excluding shipping

4L60E HEX PATTERN TO ATLAS ADAPTER

4L60E HEX PATTERN TO ATLAS ADAPTER KIT
SKU: AS-9300

$551.25
excluding shipping

DODGE NV4500 BHSG OE REPLACEMENT

Dodge NV4500 Cummins 5.9L Diesel Bellhousing
SKU: 712586

$432.87
excluding shipping

TOYOTA R150 TO 4 CYLINDER B/H

Toyota Truck R150 Transmission to Toyota 20R 22R & 22RE engine bellhousing adapter plate kit
SKU: 712562

$499.72
excluding shipping
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