The professionals at West Coast Differentials are the Detroit Locker experts! We will make sure you get the ideal locking differential or positraction for your vehicle. We also match any legitimate competitor’s advertised in-stock price, and make sure you get the locker that fits your vehicle and your performance needs.
Most applications are IN STOCK and READY TO SHIP same day!
We also stock Eaton Posi Limited Slip and E-Locker Service Kits.
Not sure which Locking Differential or Posi is the right one for you? No problem! Our Differential Professionals are here to help Monday thru Friday, 8am to 5pm Pacific Standard Time.
What kind of oil should I use? Can I use synthetic? Do I need friction additive/modifier? A quality petroleum/mineral based oil works best in the Detroit Locker units. We do not recommend synthetic oil. Friction additive/modifier is not required.
View or Download a copy of our current Differential Parts Catalog!.
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Do you have a custom width or hard to find axle housing? West Coast Differentials offers universal cut-to-fit axle shafts for multiple applications including 9” Ford, Dana 44, Dana 60 and 8.75” Chrysler. These are available for both stock and custom spline applications, and feature stock replacement or chromoly material.
West Coast Differentials’ cut-to-fit axles feature longer splines, up to 11” so the axle can be measured and cut-to-fit most stock and narrowed rear ends. These versatile axles are also multi-drilled for different bolt patterns. With the correct housing ends, these axles can be used for a wide variety of custom or stock differentials.
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