SKU: 95433875106

BMW Engine Coolant Reservoir Cap

$143.10 $159.00
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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

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Description

BMW Engine Coolant Reservoir CapThe Precision Raceworks Engine Coolant Reservoir Cap is a functional and stunningly stylish way to add a nice touch to any engine bay! This cap come in three color options so there is always a color that will work for you! Black with Billet, Black with Blue, and the Stealth series (all black). Many people don't realize it but the OEM caps have a pressure release valve built into them. Often times aftermarket companies don't know this either or just

The Precision Raceworks Engine Coolant Reservoir Cap is a functional and stunningly stylish way to add a nice touch to any engine bay!

This cap come in three color options so there is always a color that will work for you! Black with Billet, Black with Blue, and the Stealth series (all black).

Many people don't realize it but the OEM caps have a pressure release valve built into them. Often times aftermarket companies don't know this either or just don't care. But our team cares about proper function just as much as we care about the appearance in every product we design. For pressure relief, our caps incorporate the OEM internals, so you get all the functionality of the original caps, ensuring a safe and reliable system in place.

These caps offer superior style and performance-grade components that guarantee a reliable fit every time. Durable billet aluminum construction provides long-lasting protection and dependability that will upgrade your engine bay for years to come.

Other companies make covers that install with adhesive over your factory caps and can come off over time. These caps offer superior style and performance-grade components that replace the factory cap not just cover it up. Durable billet aluminum construction provides long-lasting protection and dependability that will upgrade your engine bay for years to come!

  • Weight: 0.391 lbs
  • Material type: Anodized Aluminum
  • O-Ring Material: Viton
  • Retains OEM Pressure Relief: YES

PLEASE NOTE:

These do require assembly and swapping the pressure relief valves from your old caps to your new billet caps. 

 

Fitment Note

If your primary expansion tank cap looks like this:

You will need to purchase a different coolant expansion tank cap to use as the donor cap. 

BMW Part number 17117639021

          Fitments

          • Bmw 128i 2008 to 2014
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          • Bmw 228i 2014 to 2016
          • Bmw 228ix 2015 to 2016
          • Bmw 230i 2017 to 2021
          • Bmw 230ix 2017 to 2021
          • Bmw 320i 2012 to 2019
          • Bmw 320ix 2013 to 2019
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          • Bmw 325i 2005 to 2006
          • Bmw 325xi 2006
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          • Bmw 328dx 2014 to 2019
          • Bmw 328i 2007 to 2016
          • Bmw 328ix 2013 to 2016
          • Bmw 328xi 2007 to 2013
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          • Bmw 330i 2005 to 2019
          • Bmw 330ix 2017 to 2019
          • Bmw 330xi 2006
          • Bmw 335d 2009 to 2011
          • Bmw 335i 2006 to 2015
          • Bmw 335is 2010 to 2013
          • Bmw 335ix 2013 to 2016
          • Bmw 335xi 2007 to 2013
          • Bmw 340i 2016 to 2019
          • Bmw 340ix 2016 to 2019
          • Bmw 428i 2014 to 2016
          • Bmw 428ix 2014 to 2016
          • Bmw 430i 2017 to 2020
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          • Bmw 435i 2014 to 2016
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          • Bmw 440i 2017 to 2020
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          • Bmw 525i 2004 to 2007
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          • Bmw 528i 2007 to 2017
          • Bmw 528ix 2012 to 2017
          • Bmw 528xi 2007 to 2010
          • Bmw 530e 2017 to 2023
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          • Bmw 535d 2014 to 2016
          • Bmw 535dx 2014 to 2016
          • Bmw 535i 2007 to 2017
          • Bmw 535ix 2007 to 2017
          • Bmw 540dx 2018
          • Bmw 540i 2017 to 2023
          • Bmw 540ix 2017 to 2023
          • Bmw 545i 2004 to 2005
          • Bmw 550i 2006 to 2013
          • Bmw 550ix 2010 to 2013
          • Bmw 640i 2012 to 2018
          • Bmw 640ix 2013 to 2020
          • Bmw 645ci 2004 to 2005
          • Bmw 650i 2006 to 2012
          • Bmw 650ix 2012
          • Bmw 740ex 2017 to 2018
          • Bmw 740i 2010 to 2022
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          • Bmw Hybrid 3 2013
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          • Bmw Hybrid 7l 2010 to 2014
          • Bmw Hybrid X6 2010
          • Bmw I8 2015 to 2020
          • Bmw M2 2016 to 2023
          • Bmw M235i 2014 to 2016
          • Bmw M235ix 2015 to 2016
          • Bmw M240i 2017 to 2021
          • Bmw M240ix 2017 to 2021
          • Bmw M3 2008 to 2023
          • Bmw M340i 2019 to 2023
          • Bmw M340ix 2019 to 2023
          • Bmw M4 2014 to 2023
          • Bmw M440i 2021 to 2023
          • Bmw M440ix 2021 to 2023
          • Bmw M5 2006 to 2023
          • Bmw M550ix 2017 to 2023
          • Bmw M6 2006 to 2010
          • Bmw M760ix 2017 to 2022
          • Bmw M8 2020 to 2023
          • Bmw M850ix 2019 to 2023
          • Bmw X1 2011 to 2015
          • Bmw X3 2011 to 2023
          • Bmw X4 2014 to 2023
          • Bmw X5 2009 to 2023
          • Bmw X5 3 0si 2007 to 2010
          • Bmw X5 35i 2014 to 2018
          • Bmw X5 35ix 2010 to 2018
          • Bmw X5 4 8i 2007 to 2010
          • Bmw X5 50ix 2010 to 2020
          • Bmw X5 M 2010 to 2023
          • Bmw X5 M Comp 2022 to 2023
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          • Bmw X5 M60ix 2023
          • Bmw X6 2015 to 2023
          • Bmw X6 35i 2015 to 2019
          • Bmw X6 35ix 2008 to 2019
          • Bmw X6 50ix 2009 to 2014
          • Bmw X6 M 2010 to 2023
          • Bmw X6 M Comp 2022
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          • Bmw X6 M60ix 2023
          • Bmw X7 2019 to 2023
          • Bmw X7 50ix 2019 to 2020
          • Bmw X7 M50ix 2020 to 2022
          • Bmw X7 M60ix 2023
          • Bmw Xm 2023
          • Bmw Z4 2009 to 2023
          • Toyota Supra 2019 to 2023
          Shipping Notes
          • Free Standard Shipping on $100+ Orders to the USA.
          • Except Preorder products are shipped in 48 hours.
          • Delivery to the USA:
          1. Standard Shipping : 3-10 business days
          • If time is of the essence, please consider selecting expedited delivery for faster service.
          Exchange/Return Notes
          • We offer a 30-day return/exchange service after receiving.
          • Final sale items are not eligible for returns or exchanges.
          • To process your return/exchange, please contact us at [email protected]
          • Please click here for more details>>> Return & Exchange Policy
          SKU: 95433875106

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          4.5 ★★★★★
          Based on 24 reviews
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          Product Reviews
          E
          Verified Purchase
          E. Leon
          Louisville, US
          ★★★★★ 3
          Difficult assembly, doesn’t fold well, looks good fully open
          Color: Grey, Size: B-88''W-4 Panel
          The instructions for this divider are very inadequate. After having to redo parts of the assembly, I have finally assembled it. The divider itself seems very nice when it is fully open, however it is not possible to fold it well as all the bars with the wheels go in various directions making it impossible to fold it neatly. And it has a large footprint. It is possible that I did not assemble it fully well because of the lack of adequate instructions. I am not even sure if I will keep it because I need to fold out of the way when nothing in use.
          WAS THIS REVIEW HELPFUL?YesReportShare
          Reviewed in the United States on April 16, 2026
          K
          Verified Purchase
          K.L
          Los Angeles, US
          ★★★★★ 4
          Slightly challenging build
          Color: Beige, Size: A-88''W-4 Panel
          This was my second screen set I've purchased, first of this style. Not the easiest to assemble. Lots of pulling and tugging; not a highlight in my day.
          WAS THIS REVIEW HELPFUL?YesReportShare
          Reviewed in the United States on January 15, 2026
          L
          LBZ
          Birmingham, US
          ★★★★★ 5
          Commercial grade divider suitable for many needs
          Color: Beige, Size: A-132''W-6 Panel
          This item will be used at a future event where we need to separate a single locker room into two large areas, without any construction. This divider is perfect for the job because the partitions can be 1 to 6 panels and it will roll into place. When the event is over, the divider will fold/roll away and the locker room will return to its original design. The unit is very heavy, which will ensure that it is sturdy and stable. All the components arrived, wrapped in plastic to prevent damage. The screen material is a woven polyester in a cream color that will occlude any visibility but it may be possible to see shadows on the opposite side. The height is about 6ft, which would require a very tall person to "peep over" the divider. I needed a quality unit for this project and the frame, screens, and mobility will meet the needs. The divider is not the same as the small decorative dividers -- it is more of a commercial grade product, yet tasteful. If you want/need a small divider as an accent piece, this is not the best choice. This item could be used in a medical office, treatment/massage room, to divide an office room into two, or block a hallway in a building.
          WAS THIS REVIEW HELPFUL?YesReportShare
          Reviewed in the United States on December 2, 2025
          M
          Verified Purchase
          Mr. Ruiz
          Carnegie, US
          ★★★★★ 2
          Flimsy
          Color: Grey, Size: B-88''W-4 Panel
          Would not recommend
          WAS THIS REVIEW HELPFUL?YesReportShare
          Reviewed in the United States on April 14, 2026
          K
          Karen A.
          Port Orchard, US
          ★★★★★ 5
          Great option for a professional looking backdrop
          Color: Black, Size: B-102''-3 Panel
          I decided to try these wall dividers for my home office space since it does not have a door. I wanted to have my video calls without the rest of the room in the feed to give it a more professional feel. These being on castors make them super easy to move into position and roll off to the side when not in use. They are stable, much more than the folding screens I have tried in the past. That they are connected by the middle piece and not the top/bottom of each other allows you to adjust the positioning to your needs. Overall, this did exactly what I needed and was an affordable option. I also like that they are highly portable: if you want to take them for a booth or event, the poles all disassemble into manageable lengths that easily fit in a car and take very little time to set up again. The only thing I would change is to include a bag to store them in for transportation.
          WAS THIS REVIEW HELPFUL?YesReportShare
          Reviewed in the United States on November 17, 2025

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