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Rein Car Air Conditioning Components & Parts

An AC system helps keep you cool in the summer, yes, but it has a much greater purpose than that. The system also acts as a dehumidifier and air purifier. Also, if you ever plan on selling your vehicle, maintaining the AC protects its resale value.

Sixity Auto understands the value of the AC system. That’s why we offer a large selection of car air conditioning components and parts. Whether you’re looking for an AC compressor or an expansion valve, we’ve got you covered.

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  1. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 2011-2015 BMW Alpina B7L xDrive 4.4L V8
    Special Price $8.46 Regular Price $11.99
    Rein Auto Parts
  2. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 2000 BMW 323Ci 2.5L L6
    Special Price $8.46 Regular Price $11.99
    Rein Auto Parts
  3. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1990-1991 Mercedes-Benz 350SDL 3.4L L6
    Special Price $8.52 Regular Price $11.99
    Rein Auto Parts
  4. Rein HVAC Heater Hose
    Rein Heater Inlet HVAC Heater Hose for 1985-1992 Volkswagen Jetta 1.6L 1.8L 2.0L L4
    Special Price $22.12 Regular Price $31.99
    Rein Auto Parts
  5. Rein HVAC Heater Hose
    Rein Heater Outlet To Pipe HVAC Heater Hose for 1998-2005 Volkswagen Passat 1.8L 2.0L L4
    Special Price $26.11 Regular Price $36.99
    Rein Auto Parts
  6. Rein HVAC Heater Hose
    Rein Engine To Heater Valve HVAC Heater Hose for 2000 BMW 328Ci 2.8L L6
    Special Price $30.58 Regular Price $43.99
    Rein Auto Parts
  7. Rein HVAC Heater Hose
    Rein Heater Inlet To Flange HVAC Heater Hose for 1997-2001 Audi A4 1.8L L4
    Special Price $34.89 Regular Price $49.99
    Rein Auto Parts
  8. Rein A/C Line O-Ring
    Rein ACR0020R AC Line O-Ring
    Special Price $1.18 Regular Price $1.99
    Rein Auto Parts
  9. Rein A/C Line O-Ring
    Rein ACR0023R AC Line O-Ring
    Special Price $1.28 Regular Price $1.99
    Rein Auto Parts
  10. Rein A/C Line O-Ring
    Rein ACR0022R AC Line O-Ring
    Special Price $1.30 Regular Price $1.99
    Rein Auto Parts
  11. Rein A/C Line O-Ring
    Rein ACR0005R AC Line O-Ring
    Special Price $1.34 Regular Price $1.99
    Rein Auto Parts
  12. Rein A/C Line O-Ring
    Rein ACR0008R AC Line O-Ring
    Special Price $1.50 Regular Price $1.99
    Rein Auto Parts
  13. Rein A/C Line O-Ring
    Rein ACR0021R AC Line O-Ring
    Special Price $1.57 Regular Price $1.99
    Rein Auto Parts
  14. Rein A/C Line O-Ring
    Rein ACR0013R AC Line O-Ring
    Special Price $1.62 Regular Price $1.99
    Rein Auto Parts
  15. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1993-1995 Porsche 928 5.4L V8
    Special Price $8.17 Regular Price $11.99
    Rein Auto Parts
  16. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1993-1995 Porsche 968 3.0L L4
    Special Price $8.17 Regular Price $11.99
    Rein Auto Parts
  17. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1994-2003 Porsche 911 3.4L 3.6L H6
    Special Price $8.17 Regular Price $11.99
    Rein Auto Parts
  18. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1998-2005 Mercedes-Benz CLK320 3.2L V6
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  19. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1995-1997 Mercedes-Benz C36 AMG 3.6L L6
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  20. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1988-1991 Mercedes-Benz 300SEL 3.0L L6
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  21. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1994-2006 Mercedes-Benz S600 5.5L 5.8L 6.0L V12
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  22. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1999-2003 Mercedes-Benz CLK430 4.3L V8
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  23. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1986-1991 Mercedes-Benz 420SEL 4.2L V8
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  24. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1988-1993 Mercedes-Benz 300CE 3.0L 3.2L L6
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  25. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1998-2002 Mercedes-Benz E430 4.3L V8
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  26. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1994-1999 Mercedes-Benz S320 3.2L L6
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  27. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1997-2005 Mercedes-Benz C230 1.8L 2.3L L4
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  28. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1988-1993 Mercedes-Benz 300SE 3.0L 3.2L L6
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  29. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1986-1989 Mercedes-Benz 560SL 5.6L V8
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  30. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 2005-2006 Mercedes-Benz CLK500 5.0L V8
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  31. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1991 Mercedes-Benz 350SD 3.4L L6
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  32. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 2006 Mercedes-Benz CL55 AMG 5.5L V8
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  33. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1985-1993 Mercedes-Benz 190E 2.3L 2.6L L4 L6
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  34. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1985-1993 Mercedes-Benz 500SEC 5.0L V8
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  35. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1995-1999 Mercedes-Benz E300 3.0L L6
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  36. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1994-2006 Mercedes-Benz SL600 5.5L 6.0L V12
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  37. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1988-1993 Mercedes-Benz 300TE 3.0L L6
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  38. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 2006-2007 Mercedes-Benz CLK350 3.5L V6
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  39. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1986-1991 Mercedes-Benz 560SEL 5.6L V8
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  40. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 2001-2005 Mercedes-Benz CLK55 AMG 5.5L V8
    Special Price $8.27 Regular Price $11.99
    Rein Auto Parts
  41. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 2000-2018 BMW X5 2.0L 3.0L 4.4L 4.6L 4.8L L4 L6 V8
    Special Price $8.29 Regular Price $11.99
    Rein Auto Parts
  42. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 2013-2018 BMW 320i xDrive 2.0L L4
    Special Price $8.29 Regular Price $11.99
    Rein Auto Parts
  43. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 2012-2016 BMW ActiveHybrid 5 3.0L L6
    Special Price $8.29 Regular Price $11.99
    Rein Auto Parts
  44. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 2014-2016 BMW 228i 2.0L L4
    Special Price $8.29 Regular Price $11.99
    Rein Auto Parts
  45. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 2006-2015 BMW 750Li 4.4L 4.8L V8
    Special Price $8.29 Regular Price $11.99
    Rein Auto Parts
  46. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 1997-1999 BMW 318ti 1.9L L4
    Special Price $8.29 Regular Price $11.99
    Rein Auto Parts
  47. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 2011-2016 BMW 550i xDrive 4.4L V8
    Special Price $8.29 Regular Price $11.99
    Rein Auto Parts
  48. Rein A/C Line O-Ring
    Rein AC Line O-Ring for 2020-2023 BMW 228i xDrive Gran Coupe 2.0L L4
    Special Price $8.29 Regular Price $11.99
    Rein Auto Parts
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All the Auto Air Conditioning Parts You Need

From compressors to condensers and evaporators to filters, Sixity Auto has the inventory you need to get your AC working like brand new. All of our automotive AC system components meet or exceed OEM standards. Shop our affordable selection of AC parts above, and don’t be afraid to contact us if you’re having trouble finding a specific part for your vehicle. Our US-based support team is here to help.

Our 100% Fitment Guarantee

Sixity Auto wants you to shop confidently, so we offer a 100% fitment guarantee on our parts. If a manufacturer says it fits, we back their claim. 

Fast Shipping Across the US

With warehouses strategically placed across the US, Sixity Auto ships 99% of orders within one business day. We also offer free shipping on numerous items in our inventory, including car air conditioning components.

Frequently Asked Questions

Can I recharge my car’s AC system myself?

Yes, technically, but it’s not advised. The AC system is a sealed, delicate system. When it malfunctions, it can indicate several problems, not just a refrigerant leak. It’s always best to have a mechanic inspect the unit to diagnose the underlying problem.

How can I be sure I’m ordering the right AC parts for my vehicle?

Most car air conditioning components are compatible with specific makes and models, so as long as you order the part based on the make, model, and year of your vehicle, our part will fit. 

What are the primary car air conditioning components?

The compressor, condenser, expansion valve, evaporator, and accumulator.

free shipping on eligible items at sixityauto.com

FAST & FREE SHIPPING
On eligible items

At SixityAuto.com, we offer free shipping on thousands of eligible items. We also ship FAST. Over 99% of all items ordered will ship within one business day. Plus, we ship from our strategically located warehouses on the East and West Coast to save precious shipping time.

100% fitment guarantee at sixityauto.com

100% FITMENT GUARANTEE
Your parts will fit as advertised

Shop with confidence, knowing that your purchase from Sixity Auto will fit your vehicle. If after purchase you determine that your part does not fit the vehicle we advertised, simply contact us to initiate a return. We want your parts to fit!

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RAVE REVIEWS
5-Star Rated on Sitejabber

Don't take it from us - check out our feedback from our customers! Sixity Auto has partnered with Sitejabber, the industry leader in tracking customer loyalty and feedback, to bring genuine product and customer service reviews.

Plus read thousands of authentic reviews on Trustpilot, Google, Reseller Ratings, the Better Business Bureau, and more!

call sixity auto 8am to 8pm Eastern, Monday through Friday

WE'RE HERE TO HELP
(888) 679-6279
Monday through Friday, 8am-8pm Eastern

We speak your language. Our staff has decades of experience selling auto parts to enthusiasts like you. Whether it's for your car, truck, or van, we have staff on hand that can answer your questions and make sure you get the part you're looking for.

For phone sales or help with product fitment questions, our U.S.-based customer service staff in California and Indiana is available weekdays, 8am-8pm ET.

tax exempt shopping available for businesses

BUILT FOR BUSINESS
Tax-exempt shopping available

Sixity Auto works with a wide range of business customers—from repair shops and dealerships to fleet operators, government organizations, and others that purchase parts for resale or operational use.

If you are a qualified tax-exempt or resale customer, submit your documentation and we'll set you up for tax-free shopping. Check out all the details here.

military members and vets save 10% every day

MILITARY DISCOUNT
Save 10% on every purchase

Sixity Auto is proud to support our Active-Duty Service Members, Vets, and their immediate families. To show a token of our thanks, we extend a 10% discount on your entire purchase, every single day.

We use VerifyPass (formerly ID Discount) to help us manage our Military Discount program. Click here for all the details!

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© 2026 Sixity, Inc. Part of Proximity Group, an American-owned and operated online retailer. All Rights Reserved.

© 2026 Sixity, Inc. Part of Proximity Group, an American-owned and operated online retailer. All Rights Reserved.