Each of our remanufactured differentials is rebuilt to deliver like-new performance. We completely disassemble every unit, thoroughly inspect and clean all components, and replace anything that doesn’t meet OEM standards. The result is a differential reassembled with exact OEM precision—built for reliability you can trust.

Remanufactured differentials and transfer cases offer a cost-effective, reliable alternative to new units. They are completely disassembled, inspected, and rebuilt to meet OEM specifications. This process restores performance and durability while typically costing significantly less than new parts. In addition, remanufactured units are tested for quality, include warranties, and reduce environmental impact by reusing core materials.

Yes, National Differential’s standard warranty policy covers the part for 2 years, or 100k miles, whichever comes first. The warranty covers labor claims paid at $50 per Mitchel labor hour. Though extremely rare, National Differential will always fix or replace a unit sent with a manufacturer’s defect upon arrival. For more information view our current and most up to date warranty policy here.

At National Differential, we combine over 30 years of hands-on experience with a focus on quality, precision, and customer service. Every differential and transfer case we offer is expertly remanufactured in the USA using proven processes and high-quality components.

Unlike high-volume resellers, we specialize in complete, ready-to-install assemblies and offer personalized support to ensure you get the exact fit for your vehicle. From hard-to-find units to custom builds, we’re committed to delivering reliable drivetrain solutions you can trust.

A core is the housing that contains the differential or transfer case bearings, seals, gears, and lube. A core charge is applied only if the unit you return is not eligible for remanufacturing. Unlike many online retailers, we waive the core charge for the first 30 days to help reduce your upfront cost. All we ask is that you notify us within that 30-day window when your core is ready. We will then coordinate return shipping and cover the cost of getting the unit back to National Differential. For more information view our current and most up to date core charge policy here.