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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  1. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2002-2006 Acura RSX 2.0L L4
    Special Price $10.96 Regular Price $15.99
  2. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2002-2012 Jeep Liberty 3.7L V6
    Special Price $14.15 Regular Price $19.99
  3. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2002-2010 Dodge Ram 1500 3.7L 5.7L V6 V8
    Special Price $10.96 Regular Price $15.99
  4. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2007-2008 GMC Acadia
    Special Price $11.18 Regular Price $15.99
  5. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2005-2017 Honda Odyssey 3.5L V6
    Special Price $11.18 Regular Price $15.99
  6. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2008-2012 Chevrolet Malibu
    Special Price $11.71 Regular Price $16.99
  7. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2003-2013 Chevrolet Express 3500
    Special Price $24.22 Regular Price $34.99
  8. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Upper and Lower Fuel Injector O-Ring Kit for 2008-2016 Ford Taurus 3.5L V6
    Special Price $28.90 Regular Price $40.99
    Out of stock
  9. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2003-2014 Ford E-250 4.6L 5.4L V8
    Special Price $10.96 Regular Price $15.99
  10. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Upper Fuel Injector O-Ring Kit for 2000-2004 Oldsmobile Alero 3.4L V6
    Special Price $11.18 Regular Price $15.99
  11. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Lower Fuel Injector O-Ring Kit for 2008-2012 Chevrolet Malibu 3.6L V6
    Special Price $11.71 Regular Price $16.99
  12. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Lower Fuel Injector O-Ring Kit for 2000-2004 Buick Regal 3.8L V6
    Special Price $13.33 Regular Price $18.99
  13. Dorman Fuel Injector O-Ring Kit
    Dorman 904-135 Fuel Injector O-Ring Kit
    Special Price $23.11 Regular Price $32.99
  14. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro ES 72004 Fuel Injector O-Ring Kit
    Special Price $4.28 Regular Price $5.99
  15. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro ES 71190 Fuel Injector O-Ring Kit
    Special Price $6.28 Regular Price $8.99
  16. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro ES 73204 Fuel Injector O-Ring Kit
    Special Price $10.23 Regular Price $14.99
  17. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 1994-2003 Dodge Ram 2500 8.0L V10
    Special Price $10.96 Regular Price $15.99
  18. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2002-2006 Chevrolet Trailblazer EXT
    Special Price $10.96 Regular Price $15.99
  19. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 1987-2003 Pontiac Bonneville 3.8L V6
    Special Price $10.96 Regular Price $15.99
  20. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2003-2006 Nissan 350Z 3.5L V6
    Special Price $10.96 Regular Price $15.99
  21. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 1998-2005 Volkswagen Passat 1.8L L4
    Special Price $10.96 Regular Price $15.99
  22. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2009-2013 Acura TL
    Special Price $10.96 Regular Price $15.99
  23. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2001-2006 Chevrolet Silverado 3500
    Special Price $10.96 Regular Price $15.99
  24. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 1993-1995 Isuzu Rodeo 3.2L V6
    Special Price $10.96 Regular Price $15.99
  25. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2000-2007 Jaguar S-Type 3.0L V6
    Special Price $10.96 Regular Price $15.99
  26. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 1994 Chevrolet Commercial Chassis 5.7L V8
    Special Price $10.96 Regular Price $15.99
  27. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Upper Fuel Injector O-Ring Kit for 2005-2012 Nissan Pathfinder 4.0L V6
    Special Price $10.96 Regular Price $15.99
  28. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Upper Fuel Injector O-Ring Kit for 2006-2014 Mazda MX-5 Miata 2.0L L4
    Special Price $10.96 Regular Price $15.99
  29. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 1993-2004 Jeep Grand Cherokee 4.0L L6
    Special Price $10.96 Regular Price $15.99
  30. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2005-2014 Kia Sportage 2.0L 2.4L L4
    Special Price $10.96 Regular Price $15.99
  31. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2006-2010 Dodge Charger 2.7L V6
    Special Price $10.96 Regular Price $15.99
  32. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 1990-2010 Dodge Grand Caravan 3.3L 3.8L V6
    Special Price $10.96 Regular Price $15.99
  33. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 1984-2004 Buick Regal 2.8L 3.1L 3.8L V6
    Special Price $10.96 Regular Price $15.99
  34. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Upper Fuel Injector O-Ring Kit for 2005-2020 Nissan Frontier 4.0L V6
    Special Price $10.96 Regular Price $15.99
  35. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2011-2013 Ford F-350 Super Duty 6.2L V8
    Special Price $10.96 Regular Price $15.99
  36. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 1985-1988 Pontiac Fiero 2.8L V6
    Special Price $10.96 Regular Price $15.99
  37. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2000-2013 Chevrolet Suburban 1500
    Special Price $10.96 Regular Price $15.99
  38. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2001-2006 GMC Sierra 3500
    Special Price $10.96 Regular Price $15.99
  39. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2000-2013 GMC Yukon XL 2500
    Special Price $10.96 Regular Price $15.99
  40. Fel-Pro Fuel Injector O-Ring Kit
    Fel-Pro Fuel Injector O-Ring Kit for 2001-2015 Kia Optima 2.4L L4
    Special Price $10.96 Regular Price $15.99
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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.