Built By Gearheads. Trusted By Thousands.
For over a decade, shops and DIYers across the country have relied on Prime Auto Parts for compression-tested JDM engines, transmissions, and heavy-duty trailers — backed by real inspections, real warranties, and real people who pick up the phone.
Started In A Garage. Built Into A Nationwide Supplier.
Prime Auto Parts didn’t start as a warehouse full of engines — it started the same way most good parts businesses do: with a small crew of mechanics who were tired of guessing whether a used engine off the internet would actually run.
We began sourcing low-mileage JDM engines and transmissions directly from trusted exporters, testing every unit ourselves before it ever reached a customer. Word got around. Local shops started calling. Then shops outside the state. Then trailer dealers looking for a supplier who’d stand behind what they sold.
Today, Prime Auto Parts ships JDM engines, transmissions, and utility, cargo, and equipment trailers to independent repair shops, dealerships, and everyday DIYers across the United States. The warehouse got bigger. The team grew. What never changed is the standard: we don’t sell a part we wouldn’t put in our own vehicle.
Nationwide Delivery
Fast & Reliable Across the U.S. 4-7 Business Days
Best Offers
Unbeatable Deals, Always
Best Quality
Built to Last, Trusted by Pros
Easy In-Store Return
Quick & Hassle-Free Returns in Just a Few Steps
Started In A Garage. Built Into A Nationwide Supplier.
How It Works
Find Your Parts
Browse our product categories or contact our team for assistance.
Request a Quote
Receive competitive pricing and product availability.
Confirm Your Order
Our team prepares your order for processing.
Fast Delivery
Your products are securely packaged and delivered across United States.
Why Choose Prime Auto Parts Store?
Quality-Tested Products
Every product is carefully inspected to help ensure dependable performance and long service life.
Extensive Product Range
We stock a broad selection of engines, gearboxes, and automotive spare parts for numerous vehicle makes.
Competitive Pricing
Affordable pricing without compromising on product quality.
Expert Assistance
Our experienced team helps customers find suitable replacement parts quickly and efficiently.
Fast Nationwide Delivery
Reliable shipping solutions help deliver products safely across United States.
Customer-Focused Service
We strive to build long-term relationships through professional support and dependable service.
Looking for Quality Automotive Parts?
Whether you need a replacement engine, gearbox, or automotive spare parts, Prime Auto Parts Store is ready to help. Contact our team today for reliable products, competitive pricing, and professional service.
The Standards Behind Every Part We Sell
These aren’t marketing lines. They’re the rules our inspection team follows on every single engine, transmission, and trailer that leaves our warehouse.
Inspected, Not Assumed
Every engine is compression-tested and visually inspected before it’s listed. If it doesn’t pass, it doesn’t ship.
Honest Mileage & Grading
We disclose actual mileage where available and grade every unit clearly, so you know exactly what you’re buying.
People You Can Actually Reach
No call centers reading scripts. Our team knows engines, transmissions, and trailers — and answers the phone.
We Stand Behind It
Every part ships with a written warranty. If something’s wrong, we make it right — no runaround.
Quality You Can Trust
Our goal is to provide reliable automotive parts backed by professional customer service and efficient order fulfillment. Every order is handled with care to help customers receive the right products for their automotive needs.
Our JDM Engine Grading Standards
Every JDM engine and transmission that comes through Prime Auto Parts is compression-tested, visually inspected, and graded before it’s listed for sale. We don’t rely on the exporter’s paperwork alone — our own team verifies condition on U.S. soil.
- Compression tested cylinder-by-cylinder with results on file
- Mileage disclosed when odometer documentation is available
- Visual inspection for leaks, cracks, and prior repair work
- Photos taken of the actual unit, not stock images
- Run-tested units clearly marked as such in the listing
