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Highest Ratings: Quality: We've got the awards to prove it!
We've won the Bizrate Circle of Excellence award, three years in a row. Rated outstanding for quality, satisfaction, service, and on time delivery. 1A Auto selects the highest quality parts from the best manufacturers. Check our excellent ratings.
Fastest Shipping: We ship the same day!

We'll ship your in stock order the same day, when received by 3pm Eastern. Need it yesterday? We can ship overnight. And ground shipping is always free.
No-Hassle Returns: Changed your mind? No problem.
An auto parts store is only as good as its return policy. Changed your mind? No problem. We'll take it back and credit your account in full. See full details...
USA Support Techs: 99% of support calls answered in 1 minute!
Our customer support techs are US based, car part experts. They're certified by the National Institute for Automotive Service Excellence (ASE). 99% of support calls are answered within 1 minute. View our exceptional customer service ratings.
Best Value: Pricing that's often 1/3 of dealer prices!
We're constantly comparing our prices to competitors, to ensure we're providing the best value possible. Our parts are original, high quality, and we support what we sell. There is no better deal for aftermarket auto parts on the web!
Our Guarantee: Satisfaction is the bottom line.
1A is a family owned business and our customers matter to us. If you're ever unhappy with your experience, tell us why and we'll make it right. Live help is available by phone or email.

Customer Feedback

Having a car with a rare inter...

Mercury Cougar
Donald, Murietta, CA

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AC Cooling System & Related

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Welcome to 1A Auto....

For more than 50 years, the Green family has been installing and using the same high quality auto parts that you'll find on our website. We actually use the parts we sell, and we've been selling online since 1999. Our company's mission is to make your car projects go smoothly, and to become your trusted source for auto parts. To this end, we treat our customers like family.

We employ USA based, knowledgeable support technicians. They'll help you through your project. We always make sure you get the right part. And we boast the industry's most generous returns policy. You won't find a company more passionate about auto parts than 1A Auto.

BBB RATING A+