Quality Differential Parts since 1982!


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Free ARB Air Compressor Promotion

ARB Compressor Giveaway

EXTENDED PROMOTION! thru May 31, 2017, buy any ARB Air Locker and get a free ARB Air Compressor.

  • Buy 1 Air Locker, Get an Air Locker Activation Compressor (CKSA12) – $190 Value

  • Buy 2 Air Lockers, Get a High Performance Compressor (CKMA12) – $290 Value

This is not a Mail-In offer. Your free compressor(s) will be included with any air lockers you buy.


Heavy duty diff cover ARB Air Locker

We stock ARB’s nodular differential covers for a variety of applications, including Dana 30®, Model 35, Dana 44®, Dana 50/60/70®, Chrysler 8.25″, Ford 8.8″ & GM 10-bolt. These stout covers are available in RED and BLACK.


  • Computer optimized cross brace design increases the structural rigidity of the whole axle
  • Additional housing strength helps keep the ring & pinion gears meshing on the flat faces of the teeth, greatly increasing ring & pinion life and overall maximum load strength
  • Top quality, high power neodymium magnets are used in both the drain plug and the dipstick to collect metallic wear particles as the vehicle moves
  • Magnet location in the end of the dipstick allows the oil to be checked for tell-tale signs of internal damage
  • Prolonged carrier bearing life due to extra support to the bearing alignment
  • Approach/departure angle optimized by angled exterior surfaces
  • Unique dipstick/filler cap design allows differential oil level to be adjusted for customized high driveline angles


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West Coast Differentials 30 Years

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Featured Item

Timken Hub Assemblies

Timken Hub Assemblies (Unit Hubs) are available from West Coast Differentials for light duty trucks including most applications for Ford, GM, Dodge and Toyota, including some for independent rear suspensions. The Timken brand represents OEM quality. Failing hub units will start to growl or wobble. Contact one of our rear end parts experts today to find the hub assembly you need.

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