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. Gates Engine Crankcase Breather Cap
    Gates Crankcase Breather Cap for 1957 Pontiac Super Chief 5.7L V8
    Special Price $14.27 Regular Price $19.99
  2. Gates Engine Crankcase Breather Cap
    Gates Crankcase Breather Cap for 1955-1958 Buick Century 5.3L 6.0L V8
    Special Price $13.98 Regular Price $19.99
  3. Gates Engine Crankcase Breather Cap
    Gates Crankcase Breather Cap for 1966-1968 Pontiac GTO 6.4L 6.6L V8
    Special Price $13.98 Regular Price $19.99
  4. MotoRad Engine Crankcase Breather Cap
    MotoRad Crankcase Breather Cap for 1961-1967 Pontiac Tempest
    Special Price $11.77 Regular Price $16.99
  5. MotoRad Engine Crankcase Breather Cap
    MotoRad Crankcase Breather Cap for 1964-1967 Dodge A100 Truck
    Special Price $12.80 Regular Price $17.99
  6. Gates Engine Crankcase Breather Cap
    Gates Crankcase Breather Cap for 1954-1957 Oldsmobile 88 5.3L 6.1L V8
    Special Price $13.76 Regular Price $19.99
  7. Gates Engine Crankcase Breather Cap
    Gates Crankcase Breather Cap for 1957-1959 Ford F Series 4.4L 4.8L V8
    Special Price $13.76 Regular Price $19.99
  8. Gates Engine Crankcase Breather Cap
    Gates Crankcase Breather Cap for 1978 Ford Courier 2.3L L4
    Special Price $16.60 Regular Price $23.99
  9. MotoRad Engine Crankcase Breather Cap
    MotoRad MO70 Crankcase Breather Cap
    Special Price $5.48 Regular Price $7.99
  10. Walker Exhaust Elbow
    Walker 41816 Exhaust Elbow
    Special Price $10.37 Regular Price $14.99
  11. MotoRad Engine Crankcase Breather Cap
    MotoRad Crankcase Breather Cap for 1963-1967 Pontiac LeMans
    Special Price $12.01 Regular Price $16.99
  12. MotoRad Engine Crankcase Breather Cap
    MotoRad Crankcase Breather Cap for 1955-1966 Pontiac Star Chief
    Special Price $12.01 Regular Price $16.99
  13. MotoRad Engine Crankcase Breather Cap
    MotoRad Crankcase Breather Cap for 1951-1953 Plymouth Cranbrook
    Special Price $12.80 Regular Price $17.99
  14. MotoRad Engine Crankcase Breather Cap
    MotoRad Crankcase Breather Cap for 1968 GMC C25 C2500 Pickup
    Special Price $12.80 Regular Price $17.99
  15. MotoRad Engine Crankcase Breather Cap
    MotoRad Crankcase Breather Cap for 1961-1964 Pontiac Catalina
    Special Price $12.85 Regular Price $17.99
  16. MotoRad Engine Crankcase Breather Cap
    MotoRad Crankcase Breather Cap for 1968-1969 Plymouth Roadrunner
    Special Price $13.11 Regular Price $18.99
  17. MotoRad Engine Crankcase Breather Cap
    MotoRad Crankcase Breather Cap for 1964 Dodge A100 Truck
    Special Price $13.11 Regular Price $18.99
  18. Gates Engine Crankcase Breather Cap
    Gates Crankcase Breather Cap for 1959-1961 Chevrolet Parkwood 4.6L 5.7L V8
    Special Price $13.76 Regular Price $19.99
  19. Gates Engine Crankcase Breather Cap
    Gates Crankcase Breather Cap for 1957-1958 Dodge Suburban 5.3L 5.9L V8
    Special Price $13.76 Regular Price $19.99
  20. Gates Engine Crankcase Breather Cap
    Gates Crankcase Breather Cap for 1940 DeSoto S-7 3.7L L6
    Special Price $13.76 Regular Price $19.99
  21. MotoRad Engine Crankcase Breather Cap
    MotoRad Crankcase Breather Cap for 1975-1989 Dodge D100
    Special Price $13.88 Regular Price $19.99
  22. Gates Engine Crankcase Breather Cap
    Gates Crankcase Breather Cap for 1969 American Motors Rambler 4.7L 6.4L V8
    Special Price $13.91 Regular Price $19.99
    Out of stock
  23. Gates Engine Crankcase Breather Cap
    Gates Crankcase Breather Cap for 1977-1989 Dodge Diplomat 3.7L 5.2L 5.9L L6 V8
    Special Price $14.07 Regular Price $19.99
    Out of stock
  24. Gates Engine Crankcase Breather Cap
    Gates Crankcase Breather Cap for 1965-1967 Ford Country Sedan 3.9L 6.4L L6 V8
    Special Price $14.27 Regular Price $19.99
  25. Carter Fuel Tank Lock Ring
    Carter Fuel Tank Lock Ring for 1985-1987 Chevrolet El Camino 4.3L V6
    Special Price $21.56 Regular Price $30.99
  26. Walker Exhaust Elbow
    Walker 41437 Exhaust Elbow
    Special Price $22.91 Regular Price $32.99
  27. GMB Fuel Tank Lock Ring
    GMB Fuel Tank Lock Ring for 2000-2003 Chevrolet Suburban 1500 5.3L 5.7L V8
    Special Price $29.48 Regular Price $41.99
  28. MotoRad Engine Crankcase Breather Cap
    MotoRad MO64 Crankcase Breather Cap
    Special Price $4.58 Regular Price $6.99
  29. MotoRad Engine Crankcase Breather Cap
    MotoRad MO61 Crankcase Breather Cap
    Special Price $5.55 Regular Price $7.99
  30. Delphi Sparta Fuel Tank Lock Ring
    Delphi Sparta PN9003 Fuel Tank Lock Ring
    Special Price $5.81 Regular Price $7.99
  31. MotoRad Engine Crankcase Breather Cap
    MotoRad MO84 Crankcase Breather Cap
    Special Price $5.91 Regular Price $7.99
  32. Carter Fuel Tank Lock Ring
    Carter TLR12 Fuel Tank Lock Ring
    Special Price $6.01 Regular Price $8.99
    Out of stock
  33. MotoRad Engine Crankcase Breather Cap
    MotoRad MO75 Crankcase Breather Cap
    Special Price $6.03 Regular Price $8.99
  34. Gates Engine Crankcase Breather Cap
    Gates 31070 Crankcase Breather Cap
    Special Price $6.05 Regular Price $8.99
    Out of stock
  35. Gates Engine Crankcase Breather Cap
    Gates 31069 Crankcase Breather Cap
    Special Price $6.11 Regular Price $8.99
    Out of stock
  36. Delphi Fuel Tank Lock Ring
    Delphi FA10023 Fuel Tank Lock Ring
    Special Price $6.11 Regular Price $8.99
  37. Gates Engine Crankcase Breather Cap
    Gates 31061 Crankcase Breather Cap
    Special Price $6.30 Regular Price $8.99
  38. Gates Engine Crankcase Breather Cap
    Gates 31078 Crankcase Breather Cap
    Special Price $6.41 Regular Price $8.99
    Out of stock
  39. Gates Engine Crankcase Breather Cap
    Gates 31064 Crankcase Breather Cap
    Special Price $6.51 Regular Price $8.99
  40. MotoRad Engine Crankcase Breather Cap
    MotoRad MO71 Crankcase Breather Cap
    Special Price $6.79 Regular Price $9.99
  41. MotoRad Engine Crankcase Breather Cap
    MotoRad MO135 Crankcase Breather Cap
    Special Price $8.03 Regular Price $10.99
  42. Walker Exhaust Elbow
    Walker 41001 Exhaust Elbow
    Special Price $8.43 Regular Price $11.99
    Out of stock
  43. Airtex Fuel Tank Lock Ring
    Airtex LR3003 Fuel Tank Lock Ring
    Special Price $8.66 Regular Price $11.99
    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.