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1A Auto has received the Circle of Excellence for 11 years. Fewer than 20 retailers have won the Circle of Excellence for 10+ years. This award is earned by retailers who provide outstanding service to their customers throughout the year.


Same Day Shipping

Orders ship same day when ordered by 2pm ET. Need your part faster? Choose expedited shipping at checkout.


Guaranteed To Fit

Providing you the highest quality, direct fit replacement auto parts enforced to the strictest product standards.


USA Customer Support

Exceeding customers' expectations every day, our team of passionate auto enthusiasts are here to help.


Instructional Video Library

Thousands of how-to auto repair videos specific to year, make and model guide you step-by-step through your repair.

1A Auto: Aftermarket Auto Parts Online Retailer

1A Auto believes in empowering you, our customer, to do your own car repairs. We offer a large selection of high quality car parts online, expert customer service , and helpful how-to automotive resources. Our experts aim to provide you with everything, aside from a spare pair of hands, to fix your car yourself.

We strive daily to find the best aftermarket car parts available. All our online auto parts, from headlights to side-view mirrors, and shocks and struts, are made of the highest quality materials and rigorously tested for longevity, direct fit, and function. We guarantee our replacement parts will fit as well as the original equipment. All online auto parts you buy from 1A Auto will function as well as or better than the OEM parts, whether it’s as simple as brake pads or as complex as a tow mirror. We are so confident in our aftermarket parts that we guarantee correct fit for every part. Additionally, we offer some of the longest warranties in the automotive industry.

Our friendly and knowledgeable customer service team is always ready to help. We staff our toll-free US-based call center with auto experts excited to answer all your questions. Feel free to ask anything about any of our products, including fit or installation. We want you to get exactly the replacement part you need the first time around. We are well versed in all vehicle makes and models whether your car is domestic like a Ford, Chevy, or Dodge, or an import such as a Toyota, Honda, Volkswagen, or BMW.

Standard shipping is always free in the continental US. Order before 2pm Eastern Time, Monday – Friday, and your parts will ship from one of our auto parts warehouse the same day. That way you get your parts and accessories fast, so you can get back on the road quickly.

1A Auto provides a comprehensive automotive video library to show you how you can do-it-yourself. We rock auto repair videos by posting thousands of videos showing repairs across many years, makes, and models. Our mechanics aspire to provide the exact video you need for your specific automotive repair job. These range from complete repair instructions to helpful tips and tricks, all to help DIYers maintain everything from sports cars to heavy duty trucks.

Choose 1A Auto when looking to buy auto parts online because we empower you to fix your own vehicle. We’ve helped millions of people do their own repairs from the first-timer hoping to save a few hundred dollars to the self-declared parts geek.

Our team of automotive experts come together to create the 1A Auto Blog. It’s packed full of stories, videos, how-to guides, and diagnostic articles. This is just another way we hope to empower you to fix your car yourself, saving hundreds of dollars in the process!

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