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Ring and Pinions | Positraction & Lockers | Installation Kits | Axles | Small Parts | Used Parts


Ring and Pinion Sets

West Coast Differentials carries only the highest quality ring and pinion gear sets. Every brand of gear set that we stock has been installed and tested for performance and quality by our service shop.

We carry a huge inventory of OEM and aftermarket gear sets in a wide range of ratios for American made passenger cars, light duty trucks (up to 1½ ton), Jeep, AMC, Suzuki and Toyota.

For some of those hard to find ratios, for older vehicles, or if you're just trying to save money, ask one of our sales staff about a used ring and pinion. You'll be glad you did.

Our sales staff can make sure you get the strongest, most quiet gear set available for your car or truck.

Choose A Ratio

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Positractions and Locking Differentials

Need traction? West Coast Differentials can supply the traction you've been looking for. We stock positractions from Auburn Gear, Dana Spicer, Eaton, Ford, GM, TrueTrac and US Gear. We also carry rebuilt OEM positractions.

Need extreme traction? We carry the Detroit Locker from Tractech, the Air Locker from ARB, the LOCKRIGHT and No Slip from PowerTrax.

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Installation Kits

Highest quality installation kits - it's the small stuff that can kill ya! At West Coast Differentials we build our own kits and use only the best parts. Our Installation Kits include American made Timken bearings (pinion and carrier bearings), pinion seal, pinion shims, pinion nut, crush sleeve, gear marking compound and brush, Loctite, a gasket or silicone for the cover, and a complete instruction manual that explains step by step how to install a ring and pinion.

We also offer a basic Bearing Kit for shops that already have shims and other miscellaneous items, a Pinion Kit for low mileage ratio changes, and an Inner Parts Kit with spider gears, thrust washers, cross pin shaft, and bolt or roll pin.

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Axle Shafts

West Coast Differentials carries strong, durable axle shafts. We have recently purchased a large quantity of American made aftermarket axle shafts and have priced them to sell. We also carry OEM axle shafts from Chrysler, Dana, Ford and GM.

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Small Parts

Check out the following selection of small parts:

  • Speedometer Gears
  • Bearings
  • Seals
  • Yokes
  • U Joints
  • Nuts
  • Bolts
  • Slingers
  • Thrust Washers
  • Crush Sleeves
  • Springs
  • O Rings
  • Cross-Pin Shafts
  • Spider Gears
  • More!

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Used Parts

West Coast Differentials stocks a huge inventory of quality used parts, including ring and pinions, carriers, spider gear sets, pinion yokes, housings, axle shafts and positractions. Used parts are priced well below the cost of new parts, and are always top quality.

Ask one of our sales staff about saving money with used parts.


We ship Monday through Friday until 4p.m. Pacific Time
800-510-0950
Outside the US +1 916 635 0950
2429 Mercantile Dr., Suite A, Rancho Cordova, CA, 95742

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