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. MAHLE Engine Valve Stem Oil Seal Set
    MAHLE SS45832 Engine Valve Stem Oil Seal Set
    Special Price $23.53 Regular Price $33.99
  2. MotoRad Engine Oil Filler Cap
    MotoRad Oil Filler Cap for 1994-2010 Dodge Ram 2500 5.2L 5.9L 8.0L V10 V8
    Special Price $12.23 Regular Price $16.99
  3. MotoRad Engine Oil Filler Cap
    MotoRad MO119 Oil Filler Cap
    Special Price $3.80 Regular Price $4.99
  4. MotoRad Engine Oil Filler Cap
    MotoRad Oil Filler Cap for 1975-1979 Nissan 620
    Special Price $10.57 Regular Price $14.99
  5. MotoRad Engine Oil Filler Cap
    MotoRad Oil Filler Cap for 1991-2005 Acura NSX
    Special Price $10.57 Regular Price $14.99
  6. MotoRad Engine Oil Filler Cap
    MotoRad Oil Filler Cap for 1999-2006 Suzuki Grand Vitara
    Special Price $10.57 Regular Price $14.99
  7. MotoRad Engine Oil Filler Cap
    MotoRad Oil Filler Cap for 2001-2005 Lexus IS300
    Special Price $10.77 Regular Price $14.99
  8. MotoRad Engine Oil Filler Cap
    MotoRad Oil Filler Cap for 1968-1988 Pontiac Firebird
    Special Price $10.79 Regular Price $14.99
  9. MotoRad Engine Oil Filler Cap
    MotoRad Oil Filler Cap for 1990-2003 Mazda Protege
    Special Price $10.82 Regular Price $14.99
  10. Gates Engine Oil Filler Cap
    Gates Oil Filler Cap for 1989-1991 Chevrolet R2500 Suburban 6.2L V8
    Special Price $11.06 Regular Price $15.99
  11. Fel-Pro Engine Valve Stem Oil Seal Set
    Fel-Pro SS 72526 Engine Valve Stem Oil Seal Set
    Special Price $12.63 Regular Price $17.99
  12. Gates Engine Oil Filler Cap
    Gates Oil Filler Cap for 2008-2014 Mercedes-Benz CL63 AMG 5.5L 6.2L 6.3L V8
    Special Price $12.64 Regular Price $17.99
  13. MotoRad Engine Oil Filler Cap
    MotoRad Oil Filler Cap for 1999-2010 Ford F-350 Super Duty
    Special Price $12.80 Regular Price $17.99
  14. Gates Engine Oil Filler Cap
    Gates Oil Filler Cap for 2018 Jeep Wrangler JK 3.6L V6
    Special Price $13.19 Regular Price $18.99
  15. Gates Engine Oil Filler Cap
    Gates Oil Filler Cap for 1998-2004 Chevrolet Tracker 1.6L 2.0L 2.5L L4 V6
    Special Price $13.72 Regular Price $19.99
  16. MotoRad Engine Oil Filler Cap
    MotoRad Oil Filler Cap for 2011-2018 Hyundai Sonata
    Special Price $16.77 Regular Price $23.99
  17. Gates Engine Oil Filler Cap
    Gates Oil Filler Cap for 1990-1993 Volvo 240 2.3L L4
    Special Price $18.16 Regular Price $25.99
  18. Gates Engine Oil Filler Cap
    Gates Oil Filler Cap for 2018-2019 Mitsubishi Eclipse Cross 1.5L L4
    Special Price $19.26 Regular Price $27.99
  19. MotoRad Engine Oil Filler Cap
    MotoRad Oil Filler Cap for 2010-2014 Honda Insight
    Special Price $21.09 Regular Price $29.99
  20. MotoRad Engine Oil Filler Cap
    MotoRad Oil Filler Cap for 2011-2018 Honda Accord
    Special Price $21.09 Regular Price $29.99
  21. Fel-Pro Engine Valve Stem Oil Seal Set
    Fel-Pro Engine Valve Stem Oil Seal Set for 1953-1957 Chevrolet One-Fifty Series
    Special Price $21.66 Regular Price $30.99
  22. MAHLE Engine Valve Stem Oil Seal Set
    MAHLE Exhaust Engine Valve Stem Oil Seal Set for 2005-2010 Chrysler 300 6.1L V8
    Special Price $22.92 Regular Price $32.99
  23. Fel-Pro Engine Valve Stem Oil Seal Set
    Fel-Pro Engine Valve Stem Oil Seal Set for 1960-1963 GMC 1500 Series
    Special Price $24.19 Regular Price $34.99
  24. Fel-Pro Engine Valve Stem Oil Seal Set
    Fel-Pro Engine Valve Stem Oil Seal Set for 2010-2016 Chevrolet Equinox
    Special Price $31.64 Regular Price $44.99
  25. Gates Engine Oil Filler Cap
    Gates Oil Filler Cap for 2002-2003 Saturn Vue 3.0L V6
    Special Price $36.62 Regular Price $51.99
  26. Fel-Pro Engine Valve Stem Oil Seal Set
    Fel-Pro Engine Valve Stem Oil Seal Set for 1960-1963 GMC 1000 Series
    Special Price $23.71 Regular Price $33.99
  27. MotoRad Engine Oil Filler Cap
    MotoRad Oil Filler Cap for 1996-2002 Chevrolet Chevy
    Special Price $11.55 Regular Price $15.99
  28. Gates Engine Oil Filler Cap
    Gates Oil Filler Cap for 2006-2019 Hyundai Accent 1.6L L4
    Special Price $13.45 Regular Price $18.99
  29. Gates Engine Oil Filler Cap
    Gates Oil Filler Cap for 1992-2002 Ford Crown Victoria 4.6L V8
    Special Price $13.72 Regular Price $19.99
  30. Gates Engine Oil Filler Cap
    Gates Oil Filler Cap for 2002-2020 Toyota Camry 2.4L 2.5L 3.5L L4 V6
    Special Price $14.94 Regular Price $20.99
  31. MAHLE Engine Valve Stem Oil Seal Set
    MAHLE Intake Engine Valve Stem Oil Seal Set for 1981 Ford Granada 2.3L L4
    Special Price $26.64 Regular Price $37.99
  32. MotoRad Engine Oil Filler Cap
    MotoRad MO147 Oil Filler Cap
    Special Price $3.54 Regular Price $4.99
  33. MotoRad Engine Oil Filler Cap
    MotoRad MO158 Oil Filler Cap
    Special Price $4.09 Regular Price $5.99
  34. MotoRad Engine Oil Filler Cap
    MotoRad MO154 Oil Filler Cap
    Special Price $7.30 Regular Price $9.99
  35. MotoRad Engine Oil Filler Cap
    MotoRad MO133 Oil Filler Cap
    Special Price $8.59 Regular Price $11.99
  36. MotoRad Engine Oil Filler Cap
    MotoRad Oil Filler Cap for 1971-1992 GMC Jimmy
    Special Price $9.66 Regular Price $13.99
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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.