At Sixity Auto, authenticity isn’t a claim - it’s a requirement. We sell only genuine OEM and aftermarket auto parts sourced directly from manufacturers or their authorized distribution partners. We do not sell counterfeit, imitation, or unauthorized products - ever.
Sixity Auto is an authorized seller for the brands we carry, and many of those manufacturers publicly list us on their websites as an approved retailer.
Authorized Seller for Trusted Brands
We work directly with leading manufacturers and official distributors to ensure every auto part we ship is authentic and traceable.
Where available, you can verify our authorization directly on manufacturer websites. If a manufacturer does not publish public authorization lists, we maintain written authorization and sourcing documentation on file to guarantee that the auto parts in question are genuine. Here is a sampling of manufacturers featuring their partnership with Sixity Auto:
Authorized Seller for Trusted Brands
We work directly with leading manufacturers and official distributors to ensure every part we ship is authentic and traceable.
Where available, you can verify our authorization directly on manufacturer websites. If a manufacturer does not publish public authorization lists, we maintain written authorization and sourcing documentation on file to guarantee that the auto parts in question are genuine. Here is a sampling of manufacturers featuring their partnership with Sixity Auto:
Independent Testing of Spark Plugs Purchased from Sixity Auto
Counterfeit spark plugs have become a growing problem across online marketplaces.
In a recent investigation by the YouTube channel Torque Test Channel, researchers purchased spark plugs from multiple online sellers and tested them for authenticity and performance.
Spark plugs purchased from Sixity Auto passed every authenticity and performance test.
How to Avoid Counterfeit Spark Plugs
Buy from trusted retailers: Purchase spark plugs from established, genuine automotive parts sellers that maintain verified supply chains.
Be cautious of unusually low prices: Prices that are significantly below market value can be a warning sign of counterfeit parts.
Check packaging and markings: Authentic spark plugs typically have consistent packaging, correct part numbers, and clear manufacturer branding.
Avoid unknown marketplace sellers: Buying from reputable retailers reduces the risk of receiving mixed or counterfeit OEM auto parts.
In the Torque Test Channel investigation, several spark plugs purchased online were found to be counterfeit, while the spark plugs purchased from Sixity Auto were deemed authentic.
How We Guarantee Genuine Auto Parts
Every order from Sixity Auto is backed by strict sourcing and fulfillment controls:
Direct sourcing from manufacturers or authorized distributors
No gray-market, used, or imitation parts
Secure, documented supply chains
Warehouse fulfillment handled by trained staff
Serial numbers and brand packaging preserved when applicable
We stand behind the authenticity of every product we sell.
Verified by Marketplaces & Independent Reviews
Sixity Auto is an established seller of genuine auto parts across major marketplaces, where performance, authenticity, and customer satisfaction are continuously monitored.
eBay: Top-rated seller with over 2 million items sold, 99%+ positive feedback, and over 650,000 positive reviews
Amazon: Consistently high seller ratings and performance metrics with a 4.7 out of 5 lifetime rating on over 20,000 reviews
Walmart Marketplace: Trusted seller with thousands of verified 5-star ratings
If you ever have a question about product authenticity, our team is happy to provide additional verification or documentation.
Learn More About Sixity Auto
We believe trust is earned through transparency and long-term performance. If you’d like to learn more about our company, read verified customer reviews, or understand what sets us apart, we invite you to explore the links below. Every part we sell — and every order we ship — is backed by our commitment to authenticity, accuracy, and customer service.
We believe trust is earned through transparency and long-term performance. If you’d like to learn more about our company, read verified customer reviews, or understand what sets us apart, we invite you to explore the links below. Every part we sell — and every order we ship — is backed by our commitment to authenticity, accuracy, and customer service.
"Great parts at a quality price. Excellent customer service. Very knowledgeable. 5 stars!"
- Michelle G.
"Information was easily accessible and loads of helpful information made checking out even quicker!"
- John B.
"Talked to one of your employees...never had a nicer person help me the way she did. Will recommend Sixity Auto to all my friends and family."
- Wayne R.
"Great parts at a quality price. Excellent customer service. Very knowledgeable. 5 stars!"
- Michelle G.
"Information was easily accessible and loads of helpful information made checking out even quicker!"
- John B.
"Talked to one of your employees...never had a nicer person help me the way she did. Will recommend Sixity Auto to all my friends and family."
- Wayne R.
Frequently Asked Questions
Is it safe to buy auto parts online, and how do I know they’re genuine?
Yes, it is safe to buy auto parts online, provided you purchase from established sellers that maintain verified supply chains. Genuine car parts typically have consistent manufacturer branding and part numbers that you can use to verify their authenticity.
With Sixity Auto, for instance, we’ve been in business for over 20 years and have sold over 10 million auto parts. We are an authorized reseller for trusted global brands. You can verify this authorization directly on the manufacturer's website, where available, to affirm that the auto parts you’re purchasing are genuine.
If the manufacturer does not publish a list, we maintain written authorization and sourcing documents that you can request, if you wish.
What sets Sixity Auto apart from other retailers of OEM auto parts?
Sixity Auto helps you find high-quality automotive parts from the best brands in the world at unbeatable prices. Choose from over 900,000 auto part listings from over 75 leading name brands on our website. See fast shipping and get a 100% fitment guarantee when you shop with Sixity Auto. Learn more about why you should shop with Sixity Auto.
Is there a guarantee that your part will work for my application?
Sixity Auto is committed to providing only genuine, high-quality auto parts on our site. We offer a 100% Fitment Guarantee, which essentially means that we guarantee a part will fit a specific application as advertised.
We offer a free one-year limited warranty on all Sixity-branded products. All our third-party suppliers stand behind their products as well; check out our Manufacturer Warranties page to learn about terms for our OEM auto parts suppliers.
I have questions about a product. Where can I reach out to you?
If you’d like to know more about the genuine auto parts at Sixity Auto or have any questions, our team will be happy to help you. We have an entirely U.S.-based customer support team available from 8:00 AM-8:00 PM ET. You can call us at (888) 679-6279 or contact us here.