Collection: Auto - Transfer Case

Restore peak four-wheel drive power delivery, eliminate case slipping under load, and fix pesky under-vehicle gear oil leaks with our extensive selection of Auto Transfer Case hardware. At DIY Customs, we provide premium full transfer case assemblies, specialized shift motors, heavy-duty internal drive chains, precision gears, high-temp sealing gaskets, and specialized transfer case fluids designed for a perfect fit on rugged off-road trucks, overlanding SUVs, and heavy utility vehicles. Whether you are seeking a specialized electronic switch or shift motor to fix a stubborn four-wheel-drive engagement failure, outfitting your rig with an indexing ring or drop lowering kit to correct severe driveshaft angles on a lifted platform, or completing a major teardown using our comprehensive overhaul kits—complete with high-durability output shaft seals, mainshaft bearings, and range shift hubs—our professional-grade drivetrain hardware offers the mechanical endurance and alignment security you need at unbeatable prices. From raw shift linkages, shift forks, and control levers to direct-fit oil pumps and replacement extension housings, we carry the ultimate internal and external restoration components. Don't see the specific transfer case model architecture (like NP231, NP241, or heavy-duty diesel formats), exact input shaft spline count, or specialized internal gear layout for your 4x4 truck configuration? Hit the live chat or call 412-882-8346—we can special order and drop-ship exactly what you are looking for directly to your doorstep!