Please read this before you buy parts from us.

At West Coast Differentials we have always supported our wholesale customers by not competing with them. We do not sell parts online, and have never gone out of our way to pursue retail sales. Nonetheless, we do sell parts to retail customers on a will call and mail order basis to those that are capable of installing parts themselves.

That brings us to the point of this post…

If you are planning to have a shop install your parts, we strongly recommend that you have the shop / installer purchase the parts.

Here’s why:

• Most shops will not provide a warranty on parts you buy elsewhere. This creates a hassle for everyone if the parts fail, not to mention the delay caused when customer provided parts are incorrect or incomplete.

• The professional mechanics at your local shop can order just the high quality parts they need for your job without paying for extras.

• Most shops are owner operated family businesses that make a small profit on the parts they sell in order to pay for the tools and equipment needed to install them.

Help keep your local shop in business!

 

 

In-House Isotropic Superfinishing – Gear Finishing Service

Simply put, Isotropic Superfinishing significantly reduces the surface imperfections that remain after a Ring and Pinion Gear set is manufactured. The result is a cooler, quieter and longer lasting gear set.  At West Coast Differentials, the process we use is chemically accelerated vibratory surface finishing. This is technically not a polishing process, however the resulting finish does have a polished appearance. This process eliminates surface imperfections without removing material or changing the physical dimensions of the part.
This finishing process is widely used in racing applications where a conventional break-in process is not feasible, and where optimum performance is not an option.

BENEFITS OF ISOTROPIC SUPERFINISHING

AVAILABILITY

We can Superfinish Ring & Pinion gears for practically any vehicle. Our extensive inventory of OEM and Aftermarket gear sets allows us to process and deliver your gears in the shortest possible time. Normal processing time is 1-2 days, depending on current scheduling.

Please call our Gear, Axle and Differential Parts specialists for details, pricing and scheduling.

(800) 642-0950

At West Coast Differentials, we take pride in what we do. Our specialty is Differentials, Gear and Axle parts and our focus is on those things only. This has allowed our parts and tech team to become experts in their field.

We are technical advisors and problem solvers, not just order takers. As of 2023, our parts specialists have more 90 years of combined experience.

We only sell differential and axle internal parts for rear-wheel and four-wheel drive vehicles. We don’t sell parts for front wheel drive vehicles or transaxles. We don’t sell housings or brake parts. We don’t sell steering parts like rack and pinions or tie rod ends.

 At West Coast Differentials, we make the difference!

The NEW Truetrac for Mustang is HERE!

The Truetrac for Mustang is a great choice for anyone who wants smooth and maintenance free traction. The beauty of the Truetrac is that you’ll never know it’s there until you need it. Burn out like a boss! Get your Truetrac today.

Check out our Catalog Page for the Ford 8.8″ Differential

Video of how the Truetrac works.

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About Our Company

Focus

Our specialty is Differential, Gear and Axle parts – That’s all we do!  This focus has allowed our parts and tech team to become experts in their field. At West Coast Differentials, we take pride in what we do. We are a family owned and operated business with a single location in Northern California. We service the nation from that location.

We are technical advisors and problem solvers, not just order takers. As of 2023, our parts specialists have more 90 years of combined experience.

What we Don’t Do

We only sell differential and axle internal parts for rear-wheel and four-wheel drive vehicles. We don’t sell parts for front wheel drive vehicles or transaxles. We don’t sell housings or brake parts. We don’t sell steering parts like rack and pinions or tie rod ends.

Our Goal

Our goal is to provide the highest quality parts and customer service in the business. We don’t sell parts online because we want to make sure you get the correct parts in the shortest possible time. Sales are conducted over the phone and our advice and expertise is free of charge. We will provide you with the best possible solution to fit your performance needs and budget. Our everyday prices are always fair, and we don’t try to lure customers in with loss leader promotions.

Benefits

Orders placed before 4PM Pacific Standard time are almost always shipped out the SAME DAY that you order, with the exception of special order or non-stock parts.

Returns, credits and exchanges are handled quickly, because we know it’s frustrating to wait for these transactions. We don’t want to keep your money tied up any longer than is absolutely necessary.

If you’re looking for a reliable source for gear and axle parts, give us a try! We think you’ll be glad you did.

 At West Coast Differentials, We Make the Difference!

The NEW Truetrac for RAM 1500 Trucks with the 9.25 ZF rear axle is AVAILABLE NOW!

The Truetrac for RAM 1500 is a great choice for anyone who wants smooth and maintenance free traction. The beauty of the Truetrac is that you’ll never know it’s there until you need it. Get your Truetrac today.

Check out our Catalog Page for the 9.25″ ZF Rear Axle

Video of how the Truetrac works.

---

About Our Company

Focus

Our specialty is Differential, Gear and Axle parts – That’s all we do!  This focus has allowed our parts and tech team to become experts in their field. At West Coast Differentials, we take pride in what we do. We are a family owned and operated business with a single location in Northern California. We service the nation from that location.

We are technical advisors and problem solvers, not just order takers. As of 2023, our parts specialists have more 90 years of combined experience.

What we Don’t Do

We only sell differential and axle internal parts for rear-wheel and four-wheel drive vehicles. We don’t sell parts for front wheel drive vehicles or transaxles. We don’t sell housings or brake parts. We don’t sell steering parts like rack and pinions or tie rod ends.

Our Goal

Our goal is to provide the highest quality parts and customer service in the business. We don’t sell parts online because we want to make sure you get the correct parts in the shortest possible time. Sales are conducted over the phone and our advice and expertise is free of charge. We will provide you with the best possible solution to fit your performance needs and budget. Our everyday prices are always fair, and we don’t try to lure customers in with loss leader promotions.

Benefits

Orders placed before 4PM Pacific Standard time are almost always shipped out the SAME DAY that you order, with the exception of special order or non-stock parts.

Returns, credits and exchanges are handled quickly, because we know it’s frustrating to wait for these transactions. We don’t want to keep your money tied up any longer than is absolutely necessary.

If you’re looking for a reliable source for gear and axle parts, give us a try! We think you’ll be glad you did.

 At West Coast Differentials, We Make the Difference!