Quality Differential Parts since 1982!
For a limited time, get a FREE ARB Air Compressor with the purchase of any ARB Air Locker. Single purchases come with a FREE Air Locker Activation Compressor. Buy two lockers and get a FREE High Performance Air Compressor. Read More….
At West Coast Differentials, we build complete ready-to run third members for Ford 8″, 9″, Chrysler 8.75″ and Toyota. All of our 3rd members are assembled using OEM or better quality components, and your choice or Gear Ratio and Traction Device. From stock replacement to full-on race applications, we’ve got you covered. Read more….
EATON Performance Payout is back! Buy a Detroit Locker, Truetrac, ELocker or Posi and get a $50 Rebate. Offer expires March 31, 2017. Read more……..
Wavetrac® Differentials use a patented design to improve grip in low traction conditions. The Wavetrac® differential will perform a lifetime of service without maintenance or rebuilds. Designed & manufactured in the US, they come with a transferrable Limited Lifetime Warranty. Read more……
These Air Lockers are for the enthusiast who demands the best equipment for their vehicle or buggy.The RD234 and RD235 incorporate the latest 2-piece Air Locker design and includes forged gears and a five year, unlimited mileage warranty. Read more…
Stronger, Faster, Smoother. The New ELocker4 features a stronger four-pinion design for increased strength and lightning-fast engagement. Available for 30, 35 and 40 spline axles. Read more…
Tech Topics include everything from Differential Identification to Installation Instructions and New Gear Break-In Procedure
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Our LIVE Differential Parts Experts are ready to take your call Monday thru Friday from 8AM to 5PM.
Most orders received before 4PM Pacific Standard Time will be shipped out the SAME DAY, with next day delivery via ground service to most of the West Coast!
ARB Air Compressors & Accessories
2015+ Mustang GT Differential Parts
Nissan Differential Parts
Ford Raptor Ring and Pinion Sets
ARB JK Traction Pack - Air Locker Package Deal
Gear & Axle Package Deals
Eaton Elocker 4 - Dana 44 Four Pinion
Ford 8.8 TrueTrac
Ford 9" TrueTrac 35-Spline 5-Pinion
Dana Crate Axles
14-Bolt Detroit TrueTrac
2010+ V8 Camaro Parts
Tacoma 4.11 Gears
Timken Hub Assemblies
Nissan Titan Lockers
Auburn Gear ZF Posi