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. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2000-2004 Oldsmobile Alero 2.2L 2.4L 3.4L L4 V6
    Special Price $13.16 Regular Price $18.99
    Out of stock
  2. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 1997-2002 Cadillac Eldorado 4.6L V8
    Special Price $13.43 Regular Price $18.99
    Out of stock
  3. Delphi Sparta Fuel Tank Lock Ring
    Delphi Sparta Fuel Tank Lock Ring for 2001-2003 Saturn L200 2.2L L4
    Special Price $14.87 Regular Price $20.99
  4. Delphi Fuel Tank Lock Ring
    Delphi Fuel Tank Lock Ring for 2000-2005 Pontiac Sunfire 2.2L 2.4L L4
    Special Price $15.50 Regular Price $21.99
  5. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 1997-1999 GMC Safari 4.3L V6
    Special Price $17.46 Regular Price $24.99
    Out of stock
  6. Walker Exhaust Bolt and Spring
    Walker Exhaust Bolt & Spring for 1996-1998 Dodge Stratus 2.0L L4
    Special Price $17.98 Regular Price $25.99
    Out of stock
  7. Walker Exhaust Bolt and Spring
    Walker Converter Inlet Exhaust Bolt & Spring for 1994 Chevrolet Corsica 3.1L V6
    Special Price $18.96 Regular Price $26.99
  8. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2004-2017 GMC Sierra 1500
    Special Price $26.84 Regular Price $37.99
  9. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2014-2016 Chevrolet SS
    Special Price $26.84 Regular Price $37.99
  10. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2016 Chevrolet Malibu Limited
    Special Price $26.84 Regular Price $37.99
  11. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2007 GMC Sierra 3500 Classic
    Special Price $26.84 Regular Price $37.99
  12. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2004-2006 Chevrolet Avalanche 2500
    Special Price $27.39 Regular Price $38.99
  13. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2004-2013 Chevrolet Suburban 2500
    Special Price $27.39 Regular Price $38.99
  14. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2007-2017 GMC Sierra
    Special Price $27.39 Regular Price $38.99
  15. 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
  16. Delphi Sparta Fuel Tank Lock Ring
    Delphi Sparta PN9003 Fuel Tank Lock Ring
    Special Price $5.81 Regular Price $7.99
  17. Carter Fuel Tank Lock Ring
    Carter TLR12 Fuel Tank Lock Ring
    Special Price $6.01 Regular Price $8.99
    Out of stock
  18. Delphi Fuel Tank Lock Ring
    Delphi FA10023 Fuel Tank Lock Ring
    Special Price $6.11 Regular Price $8.99
  19. Airtex Fuel Tank Lock Ring
    Airtex LR3003 Fuel Tank Lock Ring
    Special Price $8.66 Regular Price $11.99
    Out of stock
  20. Walker Exhaust Bolt and Spring
    Walker 35129 Exhaust Bolt & Spring
    Special Price $8.79 Regular Price $12.99
    Out of stock
  21. Walker Exhaust Bolt and Spring
    Walker 35908 Exhaust Bolt & Spring
    Special Price $9.27 Regular Price $12.99
  22. Carter Fuel Tank Lock Ring
    Carter TLR10 Fuel Tank Lock Ring
    Special Price $9.57 Regular Price $13.99
    Out of stock
  23. Walker Exhaust Bolt and Spring
    Walker 35031 Exhaust Bolt & Spring
    Special Price $10.36 Regular Price $14.99
    Out of stock
  24. Walker Exhaust Bolt and Spring
    Walker 36463 Exhaust Bolt & Spring
    Special Price $10.36 Regular Price $14.99
  25. Carter Fuel Tank Lock Ring
    Carter TLR9 Fuel Tank Lock Ring
    Special Price $10.41 Regular Price $14.99
    Out of stock
  26. Carter Fuel Tank Lock Ring
    Carter TLR5 Fuel Tank Lock Ring
    Special Price $10.67 Regular Price $14.99
  27. Carter Fuel Tank Lock Ring
    Carter TLR8 Fuel Tank Lock Ring
    Special Price $10.67 Regular Price $14.99
  28. Carter Fuel Tank Lock Ring
    Carter TLR6 Fuel Tank Lock Ring
    Special Price $10.88 Regular Price $15.99
  29. Carter Fuel Tank Lock Ring
    Carter TLR14 Fuel Tank Lock Ring
    Special Price $12.08 Regular Price $16.99
    Out of stock
  30. Carter Fuel Tank Lock Ring
    Carter TLR1 Fuel Tank Lock Ring
    Special Price $12.45 Regular Price $17.99
  31. Carter Fuel Tank Lock Ring
    Carter TLR3 Fuel Tank Lock Ring
    Special Price $12.61 Regular Price $17.99
    Out of stock
  32. Carter Fuel Tank Lock Ring
    Carter TLR2 Fuel Tank Lock Ring
    Special Price $13.05 Regular Price $18.99
    Out of stock
  33. Carter Fuel Tank Lock Ring
    Carter TLR7 Fuel Tank Lock Ring
    Special Price $13.05 Regular Price $18.99
  34. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 1995-1999 Buick Riviera 3.8L V6
    Special Price $13.16 Regular Price $18.99
    Out of stock
  35. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 1997-2005 Cadillac DeVille 4.6L V8
    Special Price $13.16 Regular Price $18.99
    Out of stock
  36. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2007-2008 Pontiac G5 2.2L 2.4L L4
    Special Price $13.16 Regular Price $18.99
    Out of stock
  37. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2000-2005 Pontiac Grand Am 2.2L 2.4L 3.4L L4 V6
    Special Price $13.16 Regular Price $18.99
    Out of stock
  38. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2001-2005 Pontiac Montana 3.4L 3.5L V6
    Special Price $13.16 Regular Price $18.99
    Out of stock
  39. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2000-2005 Pontiac Sunfire 2.2L 2.4L L4
    Special Price $13.16 Regular Price $18.99
    Out of stock
  40. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2001-2002 Saturn L100 2.2L L4
    Special Price $13.16 Regular Price $18.99
    Out of stock
  41. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2002-2005 Buick Rendezvous 3.4L V6
    Special Price $13.16 Regular Price $18.99
    Out of stock
  42. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 1997-2004 Cadillac Seville 4.6L V8
    Special Price $13.16 Regular Price $18.99
    Out of stock
  43. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2004-2005 Chevrolet Classic 2.2L L4
    Special Price $13.16 Regular Price $18.99
    Out of stock
  44. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2005-2006 Pontiac Pursuit 2.2L 2.4L L4
    Special Price $13.16 Regular Price $18.99
    Out of stock
  45. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2001-2003 Saturn LW200 2.2L L4
    Special Price $13.16 Regular Price $18.99
    Out of stock
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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.