Car Engine Parts Online

From air filters to fuel delivery, online engine parts are essential for automotive repairs, maintenance, and even performance upgrades. Whether you’re an experienced mechanic or automotive enthusiast working on your daily driver or restoring a classic, Sixity Auto has you covered. Dive into our catalog below to find the car engine parts you need to keep your vehicle running smoothly.

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Items 1-48 of 51

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  1. Dorman Catalytic Converter
    Dorman Front Catalytic Converter for 2011-2016 Chevrolet Cruze 1.4L L4
    Special Price $586.18 Regular Price $836.99
  2. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2013-2014 Chevrolet Malibu
    Special Price $11.09 Regular Price $15.99
  3. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2010-2013 Chevrolet Equinox
    Special Price $11.09 Regular Price $15.99
  4. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2012-2013 Chevrolet Camaro
    Special Price $11.32 Regular Price $15.99
  5. Dorman Catalytic Converter
    Dorman Front Catalytic Converter for 2013-2019 Chevrolet Trax 1.4L L4
    Special Price $586.18 Regular Price $836.99
  6. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2013 Chevrolet Spark
    Special Price $11.09 Regular Price $15.99
  7. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2012-2013 Chevrolet Sonic
    Special Price $11.09 Regular Price $15.99
  8. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2015-2016 Chevrolet Tahoe
    Special Price $11.09 Regular Price $15.99
  9. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2013 Chevrolet Trax
    Special Price $11.09 Regular Price $15.99
  10. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2015-2016 Cadillac Escalade ESV
    Special Price $11.09 Regular Price $15.99
  11. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2012-2013 Chevrolet Caprice
    Special Price $11.09 Regular Price $15.99
  12. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2014-2016 GMC Sierra 1500 5.3L V8
    Special Price $11.09 Regular Price $15.99
  13. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2013 Buick Encore
    Special Price $11.09 Regular Price $15.99
  14. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2010-2014 Cadillac CTS
    Special Price $11.09 Regular Price $15.99
  15. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2010-2013 Cadillac SRX
    Special Price $11.09 Regular Price $15.99
  16. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2011-2013 Buick Regal
    Special Price $11.32 Regular Price $15.99
  17. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2013-2014 Cadillac XTS
    Special Price $11.32 Regular Price $15.99
  18. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2011-2013 Chevrolet Cruze
    Special Price $11.32 Regular Price $15.99
  19. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2011 Saab 9-4X
    Special Price $11.32 Regular Price $15.99
  20. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2015-2016 GMC Yukon XL
    Special Price $11.32 Regular Price $15.99
  21. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2015-2016 Chevrolet Suburban
    Special Price $11.32 Regular Price $15.99
  22. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2011-2013 Chevrolet Volt
    Special Price $11.32 Regular Price $15.99
  23. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2015-2016 GMC Yukon
    Special Price $11.32 Regular Price $15.99
  24. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2013 Buick Verano
    Special Price $11.32 Regular Price $15.99
  25. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2014-2016 Chevrolet Silverado 1500 5.3L V8
    Special Price $11.32 Regular Price $15.99
  26. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2012 Chevrolet Captiva Sport
    Special Price $11.32 Regular Price $15.99
  27. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2010-2013 Buick LaCrosse
    Special Price $11.32 Regular Price $15.99
  28. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2013-2014 Cadillac ATS
    Special Price $11.32 Regular Price $15.99
  29. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2015-2016 Cadillac Escalade
    Special Price $11.32 Regular Price $15.99
  30. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2012-2014 Chevrolet Impala
    Special Price $11.32 Regular Price $15.99
  31. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2010-2013 GMC Terrain
    Special Price $11.32 Regular Price $15.99
  32. Fel-Pro Engine Valve Cover O-Ring
    Fel-Pro Engine Valve Cover O-Ring for 2010 Buick Allure
    Special Price $11.32 Regular Price $15.99
  33. SKF Catalytic Converter
    SKF 19215 Catalytic Converter
    Special Price $15.16 Regular Price $21.99
    Out of stock
  34. Holstein Engine Variable Valve Timing (VVT) Adjuster Magnet
    Holstein 2VTS0211 Variable Timing Adjuster Magnet
    Special Price $41.84 Regular Price $59.99
    Out of stock
  35. Holstein Engine Variable Valve Timing (VVT) Adjuster Magnet
    2 pc Holstein Variable Timing Adjuster Magnets for 2015 BMW 228i xDrive 2.0L L4
    Special Price $100.60 Regular Price $143.99
    Out of stock
  36. Holstein Engine Variable Valve Timing (VVT) Adjuster Magnet
    2 pc Holstein Variable Timing Adjuster Magnets for 2014-2015 BMW 328i 2.0L L4
    Special Price $100.60 Regular Price $143.99
    Out of stock
  37. Holstein Engine Variable Valve Timing (VVT) Adjuster Magnet
    2 pc Holstein Variable Timing Adjuster Magnets for 2013-2015 BMW 320i xDrive 2.0L L4
    Special Price $100.60 Regular Price $143.99
    Out of stock
  38. Holstein Engine Variable Valve Timing (VVT) Adjuster Magnet
    2 pc Holstein Variable Timing Adjuster Magnets for 2012-2015 BMW 320i 2.0L L4
    Special Price $100.60 Regular Price $143.99
    Out of stock
  39. Holstein Engine Variable Valve Timing (VVT) Adjuster Magnet
    2 pc Holstein Variable Timing Adjuster Magnets for 2012-2015 BMW 528i 2.0L L4
    Special Price $102.66 Regular Price $146.99
    Out of stock
  40. Holstein Engine Variable Valve Timing (VVT) Adjuster Magnet
    2 pc Holstein Variable Timing Adjuster Magnets for 2014-2015 BMW 228i 2.0L L4
    Special Price $102.66 Regular Price $146.99
    Out of stock
  41. Holstein Engine Variable Valve Timing (VVT) Adjuster Magnet
    2 pc Holstein Variable Timing Adjuster Magnets for 2015 BMW 428i Gran Coupe 2.0L L4
    Special Price $102.66 Regular Price $146.99
    Out of stock
  42. Holstein Engine Variable Valve Timing (VVT) Adjuster Magnet
    2 pc Holstein Variable Timing Adjuster Magnets for 2014-2015 BMW 428i 2.0L L4
    Special Price $102.66 Regular Price $146.99
    Out of stock
  43. Holstein Engine Variable Valve Timing (VVT) Adjuster Magnet
    2 pc Holstein Variable Timing Adjuster Magnets for 2012-2015 BMW 528i xDrive 2.0L L4
    Special Price $102.66 Regular Price $146.99
  44. Holstein Engine Variable Valve Timing (VVT) Adjuster Magnet
    2 pc Holstein Variable Timing Adjuster Magnets for 2014-2015 BMW 428i xDrive 2.0L L4
    Special Price $102.66 Regular Price $146.99
    Out of stock
  45. Holstein Engine Variable Valve Timing (VVT) Adjuster Magnet
    2 pc Holstein Variable Timing Adjuster Magnets for 2014-2015 BMW 328i xDrive 2.0L L4
    Special Price $102.66 Regular Price $146.99
    Out of stock
  46. Dorman Catalytic Converter
    Dorman 674-854 Catalytic Converter
    Special Price $536.73 Regular Price $766.99
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High-Quality Engine Parts for Your Motor Vehicle

Sixity Auto works with top brands to build our inventory of OEM-quality engine parts online, ensuring you have access to reliable and cost-effective components. We promise that every part fits as advertised and meets or exceeds expectations. 

We want to make sure that whether you’re performing routine maintenance or making a major repair, you can find the best parts at a fair price. Our focus is always on delivering affordable solutions without compromising the strict tolerances for your vehicle’s longevity. 

Fast, Reliable Shipping

We know that when you order car engine parts, you need them right away. Our network of US warehouses enables us to offer fast, dependable shipping across the US, with 99% of orders shipping within one business day. Many of the items in our catalog also come with free shipping. 

A Reputation You Can Count On

Sixity Auto has been in business for over 20 years and has shipped over 10 million engine parts from our online storefront. Our customers praise our products and timely delivery. If you have any questions about us or our inventory, contact our US-based customer service department. We’re happy to be of service.

Frequently Asked Questions

How fast will your engine parts arrive?

Timing is a top priority. We use our extensive network of warehouses to ensure speedy delivery, with most orders shipping within one business day. That said, the exact delivery time will depend on the parts ordered, your location, and the delivery options selected during checkout.

Are the parts on Sixity Auto comparable to what I’d find in a store?

Absolutely! We stock only top-quality OEM-replacement auto parts that meet or exceed original equipment specifications. The crucial difference between Sixity Auto and the other guys is price. We offer these high-quality parts at prices typically lower than those at your local auto parts store.

Do you offer any discounts for the engine parts sold online?

Yes. We’re proud to offer a 10% discount on everything for military personnel


© 2026 Sixity, Inc. Part of Proximity Group, an American-owned and operated online retailer. All Rights Reserved.