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. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1988-1993 BMW M5
    Special Price $12.61 Regular Price $17.99
  2. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 1992-1999 Chevrolet Cavalier 2.2L 2.4L 3.1L L4 V6
    Special Price $17.46 Regular Price $24.99
    Out of stock
  3. Airtex Fuel Tank Lock Ring
    Airtex Fuel Tank Lock Ring for 1996-1997 Chevrolet C3500 5.7L 6.5L 7.4L V8
    Special Price $19.53 Regular Price $27.99
    Out of stock
  4. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2004 Ford F-150 Heritage 4.2L 4.6L V6 V8
    Special Price $21.00 Regular Price $29.99
  5. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 1997-1999 Ford F-250 4.6L 5.4L V8
    Special Price $21.00 Regular Price $29.99
  6. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 1991-1996 Buick Park Avenue 3.8L V6
    Special Price $21.12 Regular Price $29.99
  7. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 2012-2017 Chevrolet Sonic 1.4L 1.8L L4
    Special Price $23.69 Regular Price $33.99
    Out of stock
  8. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2013-2018 Cadillac ATS
    Special Price $26.84 Regular Price $37.99
  9. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2006-2011 Cadillac DTS
    Special Price $26.84 Regular Price $37.99
  10. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2004-2017 GMC Sierra 2500 HD
    Special Price $27.39 Regular Price $38.99
  11. Dorman Fuel Tank Lock Ring
    Dorman Fuel Tank Lock Ring for 2004-2013 Chevrolet Suburban 2500
    Special Price $27.39 Regular Price $38.99
  12. 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
  13. Fel-Pro Engine Auxiliary Shaft Seal
    Fel-Pro 55379 Engine Auxiliary Shaft Seal
    Special Price $3.51 Regular Price $4.99
  14. Fel-Pro Engine Auxiliary Shaft Seal
    Fel-Pro 55372 Engine Auxiliary Shaft Seal
    Special Price $3.85 Regular Price $5.99
  15. SKF Engine Auxiliary Shaft Seal
    SKF 7536 Engine Auxiliary Shaft Seal
    Special Price $5.28 Regular Price $7.99
  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. Carter Fuel Tank Lock Ring
    Carter TLR10 Fuel Tank Lock Ring
    Special Price $9.57 Regular Price $13.99
    Out of stock
  21. Carter Fuel Tank Lock Ring
    Carter TLR9 Fuel Tank Lock Ring
    Special Price $10.41 Regular Price $14.99
    Out of stock
  22. Carter Fuel Tank Lock Ring
    Carter TLR5 Fuel Tank Lock Ring
    Special Price $10.67 Regular Price $14.99
  23. Carter Fuel Tank Lock Ring
    Carter TLR8 Fuel Tank Lock Ring
    Special Price $10.67 Regular Price $14.99
  24. Carter Fuel Tank Lock Ring
    Carter TLR6 Fuel Tank Lock Ring
    Special Price $10.88 Regular Price $15.99
  25. Carter Fuel Tank Lock Ring
    Carter TLR14 Fuel Tank Lock Ring
    Special Price $12.08 Regular Price $16.99
    Out of stock
  26. Carter Fuel Tank Lock Ring
    Carter TLR1 Fuel Tank Lock Ring
    Special Price $12.45 Regular Price $17.99
  27. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1987-1988 BMW M6
    Special Price $12.61 Regular Price $17.99
  28. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 2002 Rolls-Royce Park Ward
    Special Price $12.61 Regular Price $17.99
  29. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1985-1989 BMW 635CSi
    Special Price $12.61 Regular Price $17.99
  30. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1986-1987 BMW L7
    Special Price $12.61 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. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1988-2001 BMW 750iL
    Special Price $12.61 Regular Price $17.99
  33. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1978-1984 BMW 633CSi
    Special Price $12.61 Regular Price $17.99
  34. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1988-1992 BMW 735iL
    Special Price $12.61 Regular Price $17.99
  35. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1985-1993 BMW 535i
    Special Price $12.61 Regular Price $17.99
  36. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1985-1992 BMW 735i
    Special Price $12.87 Regular Price $17.99
  37. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1988 BMW 535is
    Special Price $12.87 Regular Price $17.99
  38. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1993-1997 BMW 850Ci
    Special Price $12.87 Regular Price $17.99
  39. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1983-1984 BMW 533i
    Special Price $12.87 Regular Price $17.99
  40. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1991-1992 BMW 850i
    Special Price $12.87 Regular Price $17.99
  41. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1978-1984 BMW 733i
    Special Price $12.87 Regular Price $17.99
  42. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1987 BMW L6
    Special Price $12.87 Regular Price $17.99
  43. National Engine Auxiliary Shaft Seal
    National Engine Auxiliary Shaft Seal for 1999-2002 Rolls-Royce Silver Seraph
    Special Price $12.87 Regular Price $17.99
  44. Carter Fuel Tank Lock Ring
    Carter TLR2 Fuel Tank Lock Ring
    Special Price $13.05 Regular Price $18.99
    Out of stock
  45. Carter Fuel Tank Lock Ring
    Carter TLR7 Fuel Tank Lock Ring
    Special Price $13.05 Regular Price $18.99
  46. 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
  47. 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
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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


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