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High performance auto parts and accessories your car will love


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About AJ-USA

At AJ-USA we are dedicated to delivering the highest quality automotive parts and service at the best possible price for our customers.

Since 1978, AJ-USA Inc. has been a leader in supplying both OEM and Performance Auto Parts and Accessories for cars, trucks, vans, SUVs, motorcycles, and watercrafts. We have all the parts that you might need for your vehicle including air filters & air intakes, throttle body spacers, water pumps, waternecks, fuel delivery, fuel pumps, fuel lines, carburetors, suspension & chassis, anti-sway bars, shock absorbers and struts, springs & coils, brake kits, brake lines, brake pads, brake rotors, engine, crate engines, cylinder heads, turbos & superchargers, oil filters, wheel spacers, chips & modules, data acquisition, programmers & tuners, speedometer corrections, exhaust and headers, mufflers, bushings, steering stabilizers. Our commitment to customer service is second to none and our goal is to provide the highest quality parts and exceptional service at the best prices in the business.

We are also a proud authorized distributor of all of your favorite auto part brands including: AEM, Airaid, Bilstein, Borla, Brembo, Centric, Colgan Custom, Covercraft, Coverking, Dashmat, EBC Brakes, Edelbrock, Eibach, Gibson, Hawk, Husky Liners, Injen, JBA, Jet Performance, K&N, Koni, LeBra, Magnaflow, Pacesetter, Power Stop, Rigid Industries, Russell, Seat Armour, StopTech, Vogtland, Volant, and WeatherTech.

Give us a call today and our in-house experts will be happy to assist you with finding the perfect auto part for your performance or repair needs at the best possible prices.

What Customers Are Saying About Our Auto Parts And Services

Picked up a Borla Exhaust for my 2005 Jeep Wrangler X 4.0L Love the exhaust sounds great and looks much better then stock. Buying from AJ USA was easy I got the best price and picked it up at their store in San Diego (actually has them install it). Definitely recommend their services both Parts and Shop

Jay C, verified testimonial from Trustpilot