Quality Differential Parts since 1982!


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Free Technical Support West Coast Differentials offers Free Technical Support before and after you buy differential parts from us. Our differential parts experts will make sure you get the right parts the first time!
Same Day Shipping At West Coast Differentials we think you deserve to have your parts as soon as possible. So most orders placed before 4pm Pacific time ship the same day!
Differential Parts Distributor We have your differential parts in stock ready to ship today. West Coast Differentials stocks a complete line of light duty axle parts for Chevrolet, Chrysler, Dana, Ford, GM, Jeep and Toyota axle assemblies.
We Make the Difference At West Coast Differentials we are committed to making your experience with us totally enjoyable. We think top notch customer service is the most important thing we do. Hence, at West Coast Differentials, We Make the Difference is much more than a slogan.

Quality Brand-Name Parts Ready to Ship TODAY!

Brand Name Differential Parts

Category: Featured Differential Parts

ARB Air Locker – 14-Bolt 35 / 40 Spline Options

35 40 spline 14-Bolt Air Locker

ELocker4 for Dana 60 & 70

ELocker4 – Faster, Stronger, Smoother.

The new “Direct-Acting” Dana 60 and Dana 70 ELockers are here! These new locking differentials are a stronger four-pinion design and engage super fast. Available for 30, 35 & 40 spline axles, with front and rear models for Dana 60 and Dana 70. 100% axle lock at the flip of a switch.



ARB Air Locker Price Reduction

New ARB Air Locker Price Discount

Get More for Less. Save on the Trusted Air Locker. $100 average retail price reduction across the entire Air Locker product line.

ARB Air Locker – The Original. The Toughest. Still The Best.

Read more…

New Lower Prices on ARB Air Lockers!

New Low Price ARB Air Locker

Get More for Less. Save on the Trusted Air Locker. $100 average retail price reduction across the entire Air Locker product line.

The Original. The Toughest. Still The Best.

ARB is very excited to announce that, due to manufacturing efficiencies at our plant in Melbourne, Australia, we are able to lower the average retail price on Air Lockers by more than $100 dollars each.   For almost three decades the venerable Air Locker has proven itself to be the strongest, most durable and most reliable selectable locker on the market.   Now it’s an even better value than before.

New from Auburn Gear! Chrysler 9.25″ ZF Posi

Grand Cherokee-Ram 1500-Dodge Durango -Limited Slip

Looking for more traction for your 2010 and newer Ram 1500, Dodge Durango or Jeep Grand Cherokee? Check out Auburn’s new High Performance Series Limited-Slip Differential for Chrysler 9.25″ “ZF”.  Get the details here including application information.

Application Guides

Differential Parts Application Guide See the parts that are available for your vehicle, with direct links to our most current parts catalog.

Tech Topics

Differential Repair-Gear Ratio Calculators-setup specs-installation Instructions

Tech Topics include everything from Differential Identification to Installation Instructions and New Gear Break-In Procedure

eNews & Updates

West Coast Differentials 30 Years

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Order Parts

Our LIVE Differential Parts Experts are ready to take your call Monday thru Friday from 8AM to 5PM.

(800) 510-0950

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!

We do not offer Online Ordering We want to make sure you get the right parts... Simply give us a call! Let our parts specialists take the guesswork out of your order.

Parts Catalog

The most current listings can be accessed using the "Find Your Parts" link (Look for the magnifying glass!)