West Coast Differentials has been distributing quality differential and axle parts since 1982. We believe that our exceptional customer service and product knowledge is what sets us apart from the competition. Give us a try, we think you'll be glad you did!
The most current parts and application information can always be found here on our website or by calling one of our differential parts experts. All of the parts we sell are also used every day in our busy service shop. This gives us confidence in the quality of the parts we sell.
ALL new ring & pinion gear sets must be properly broken in to prevent damage & premature failure.
Improper gear break-in procedures may cause overloading and overheating of the ring and pinion gears as well as break down of the gear oil. Failure to properly break-in a new gear set can be identified by inspection, and may void the manufacturer’s warranty.
If you’re replacing the ring & pinion gear set, don’t plan on heading up over that mountain pass or hooking up that heavy trailer just yet….. Following the simple steps outlined below before you head out can prevent potential noise issues or gear damage.
After driving the first 15-20 miles at around 60 mph, it is best to stop and let the differential cool completely. Maintaining a speed below 60 mph and driving conservatively for the first 100 miles is also advised. The gear oil should be changed after 500 miles. We recommend that you drive at least 500 miles before any heavy use or towing. During the first 45 miles of actual towing, only drive 10-15 miles at a time before stopping to let the differential cool.
These steps are necessary to prevent damage to the new ring & pinion gear. Any heavy use or overloading of the differential during the first 500 miles may cause irreparable damage to the gear set.
Again, IMPROPER BREAK-IN CAN BE IDENTIFIED BY INSPECTION AND MAY VOID THE MANUFACTURER’S WARRANTY.
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Need your parts ASAP?
For the fastest service, call our Differential Parts Experts at (800) 510-0950 for immediate assistance. We are available to help Monday thru Friday from 8 AM to 5 PM Pacific Standard Time, and most orders placed by 4 PM ship out the SAME DAY!
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