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 1026

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  1. Hitachi Direct Injection High Pressure Fuel Pump
    Hitachi Astemo HPP0018 Direct Injection Fuel Pump
    Special Price $385.08 Regular Price $549.99
    Out of stock
  2. Hitachi Direct Injection High Pressure Fuel Pump
    Hitachi Astemo Left Direct Injection Fuel Pump for 2008-2012 Audi S5 4.2L V8
    Rating:
    100%
    Special Price $386.63 Regular Price $551.99
    Out of stock
  3. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2004-2014 GMC Yukon XL 1500 5.3L 6.0L 6.2L V8
    Special Price $23.22 Regular Price $32.99
    Out of stock
  4. Hitachi Direct Injection High Pressure Fuel Pump
    Hitachi Astemo HPP0004 Direct Injection Fuel Pump
    Special Price $447.20 Regular Price $638.99
  5. Hitachi Direct Injection High Pressure Fuel Pump
    Hitachi Astemo Left Direct Injection Fuel Pump for 2007-2009 Audi A8 Quattro 4.2L V8
    Special Price $628.39 Regular Price $897.99
  6. Delphi Fuel Tank Lock Ring
    Delphi FA10023 Fuel Tank Lock Ring
    Special Price $6.11 Regular Price $8.99
  7. Carter Fuel Tank Lock Ring
    Carter TLR9 Fuel Tank Lock Ring
    Special Price $10.41 Regular Price $14.99
    Out of stock
  8. Delphi Fuel Tank Lock Ring
    Delphi Fuel Tank Lock Ring for 1997-2005 Buick Park Avenue 3.8L V6
    Special Price $15.19 Regular Price $21.99
  9. Delphi Fuel Tank Lock Ring
    Delphi Fuel Tank Lock Ring for 1995-1998 Buick Riviera 3.8L V6
    Special Price $15.19 Regular Price $21.99
  10. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 1997-1999 Chevrolet Monte Carlo 3.1L 3.4L 3.8L V6
    Special Price $17.10 Regular Price $23.99
    Out of stock
  11. Walker Exhaust Elbow
    Walker 41098 Exhaust Elbow
    Special Price $20.50 Regular Price $28.99
  12. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 1997-2003 Ford F-150 4.2L 4.6L 5.4L V6 V8
    Special Price $20.58 Regular Price $28.99
  13. Walker Exhaust Elbow
    Walker 42760 Exhaust Elbow
    Special Price $24.02 Regular Price $33.99
    Out of stock
  14. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2005-2009 GMC Envoy
    Special Price $26.84 Regular Price $37.99
  15. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2005-2006 Chevrolet Silverado 1500 HD
    Special Price $26.84 Regular Price $37.99
  16. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2004-2019 Chevrolet Express 2500
    Special Price $26.84 Regular Price $37.99
  17. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2007-2017 Chevrolet Cheyenne
    Special Price $27.39 Regular Price $38.99
  18. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2008-2017 Buick Enclave
    Special Price $27.39 Regular Price $38.99
  19. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2005-2008 Pontiac Grand Prix
    Special Price $27.39 Regular Price $38.99
  20. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2005-2006 GMC Sierra 1500 HD
    Special Price $27.39 Regular Price $38.99
  21. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2012-2017 Chevrolet Sonic 1.4L 1.8L L4
    Special Price $27.39 Regular Price $38.99
  22. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2004-2014 Chevrolet Express 1500
    Special Price $27.39 Regular Price $38.99
  23. GMB Fuel Tank Lock Ring
    GMB Fuel Tank Lock Ring for 2002-2004 Chevrolet Trailblazer 4.2L L6
    Special Price $28.89 Regular Price $40.99
  24. GMB Fuel Tank Lock Ring
    GMB Fuel Tank Lock Ring for 1999-2003 Chevrolet Silverado 2500 5.3L 5.7L 6.0L V8
    Special Price $28.89 Regular Price $40.99
  25. Carter Fuel Tank Lock Ring
    Carter TLR16 Fuel Tank Lock Ring
    Special Price $41.45 Regular Price $58.99
  26. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2001-2003 Chevrolet Silverado 3500 6.0L 8.1L V8
    Special Price $53.53 Regular Price $75.99
  27. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2000-2004 Chevrolet S10 2.2L 4.3L L4 V6
    Special Price $53.53 Regular Price $75.99
  28. Hitachi Direct Injection High Pressure Fuel Pump
    Hitachi Astemo HPP0012 Direct Injection Fuel Pump
    Special Price $354.50 Regular Price $505.99
  29. Carter Direct Injection High Pressure Fuel Pump
    Carter M73109 Direct Injection High Pressure Fuel Pump
    Special Price $372.75 Regular Price $531.99
  30. Delphi Direct Injection High Pressure Fuel Pump
    Delphi Direct Injection High Pressure Fuel Pump for 2013-2015 Cadillac ATS 3.6L V6
    Special Price $377.69 Regular Price $539.99
  31. Delphi Direct Injection High Pressure Fuel Pump
    Delphi Direct Injection High Pressure Fuel Pump for 2018 Buick Enclave 3.6L V6
    Special Price $385.40 Regular Price $550.99
  32. Hitachi Direct Injection High Pressure Fuel Pump
    Hitachi Astemo Direct Injection Fuel Pump for 2015 Subaru WRX 2.0L H4
    Special Price $402.98 Regular Price $575.99
  33. Hitachi Direct Injection High Pressure Fuel Pump
    Hitachi Astemo Direct Injection Fuel Pump for 2007 Audi Q7 3.6L V6
    Special Price $403.10 Regular Price $575.99
  34. Hitachi Direct Injection High Pressure Fuel Pump
    Hitachi Astemo Direct Injection Fuel Pump for 2009-2016 Audi A4 Quattro 2.0L L4
    Special Price $417.85 Regular Price $596.99
  35. Hitachi Direct Injection High Pressure Fuel Pump
    Hitachi Astemo Direct Injection Fuel Pump for 2009-2015 Volkswagen CC 3.6L V6
    Special Price $422.12 Regular Price $602.99
    Out of stock
  36. Carter Direct Injection High Pressure Fuel Pump
    Carter Direct Injection High Pressure Fuel Pump for 2010-2019 Ford Flex 3.5L V6
    Special Price $495.61 Regular Price $707.99
  37. Carter Direct Injection High Pressure Fuel Pump
    Carter Direct Injection High Pressure Fuel Pump for 2010-2019 Ford Taurus 3.5L V6
    Special Price $495.61 Regular Price $707.99
  38. Hitachi Direct Injection High Pressure Fuel Pump
    Hitachi Astemo Direct Injection Fuel Pump for 2015-2018 Audi A8 Quattro 3.0L V6
    Special Price $499.94 Regular Price $713.99
  39. Hitachi Direct Injection High Pressure Fuel Pump
    Hitachi Astemo Direct Injection Fuel Pump for 2011-2012 Audi Q5 2.0L L4
    Special Price $505.35 Regular Price $721.99
  40. Hitachi Direct Injection High Pressure Fuel Pump
    Hitachi Astemo Direct Injection Fuel Pump for 2010-2012 Audi Q5 3.2L V6
    Special Price $513.88 Regular Price $733.99
  41. Hitachi Direct Injection High Pressure Fuel Pump
    Hitachi Astemo Direct Injection Fuel Pump for 2015-2018 Audi A8 Quattro 4.0L V8
    Special Price $553.11 Regular Price $789.99
    Out of stock
  42. Delphi Direct Injection High Pressure Fuel Pump
    Delphi Direct Injection High Pressure Fuel Pump for 2012 Mercedes-Benz R350
    Special Price $668.35 Regular Price $954.99
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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.