SKU: 73327422072

BMW Auxiliary Coolant Reservoir Cap

$85.49 $94.99
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Ships within 48 hours · Estimated delivery Jul 21 - Jul 26

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Description

BMW Auxiliary Coolant Reservoir CapThe Precision Raceworks Auxiliary 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 Auxiliary 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!

 

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

  • Weight: 0.24 lbs
  • Material type: Anodized Aluminum
  • O-Ring Material: Viton
  • Retains OEM Pressure Relief: YES

            Fitments

            • Bmw 228i 2021 to 2023
            • Bmw 228ix 2020 to 2023
            • Bmw 230i 2017 to 2023
            • Bmw 230ix 2017 to 2023
            • Bmw 330e 2016 to 2023
            • Bmw 330ex 2021 to 2023
            • Bmw 330i 2017 to 2023
            • Bmw 330ix 2017 to 2023
            • Bmw 340i 2016 to 2019
            • Bmw 340ix 2016 to 2019
            • Bmw 430i 2017 to 2023
            • Bmw 430ix 2017 to 2023
            • Bmw 440i 2017 to 2020
            • Bmw 440ix 2017 to 2020
            • Bmw 530e 2017 to 2023
            • Bmw 530ex 2017 to 2023
            • Bmw 530i 2017 to 2023
            • Bmw 530ix 2017 to 2023
            • Bmw 540i 2017 to 2023
            • Bmw 540ix 2017 to 2023
            • Bmw 550i 2010 to 2016
            • Bmw 550ix 2010 to 2017
            • Bmw 640ix 2018 to 2020
            • Bmw 650i 2011 to 2018
            • Bmw 650ix 2012 to 2018
            • Bmw 740ex 2017 to 2018
            • Bmw 740i 2016 to 2023
            • Bmw 740ix 2016 to 2022
            • Bmw 745ex 2019 to 2022
            • Bmw 750ex 2024
            • Bmw 750i 2009 to 2019
            • Bmw 750ix 2010 to 2022
            • Bmw 750li 2009 to 2015
            • Bmw 750lix 2010 to 2015
            • Bmw 760ix 2023
            • Bmw 760li 2010 to 2014
            • Bmw 840i 2020 to 2023
            • Bmw 840ix 2020 to 2023
            • Bmw Alpina B7 2010 to 2022
            • Bmw Alpina B7l 2010 to 2015
            • Bmw Alpina B7lx 2011 to 2014
            • Bmw Alpina B7x 2011 to 2014
            • Bmw Alpina Xb7 2021 to 2023
            • Bmw Hybrid 3 2013
            • Bmw Hybrid 5 2012 to 2013
            • Bmw Hybrid 7 2010 to 2012
            • Bmw Hybrid 7l 2010 to 2014
            • Bmw Hybrid X6 2010
            • Bmw I3 2014 to 2021
            • Bmw I3s 2018 to 2021
            • Bmw I8 2015 to 2020
            • Bmw M2 2019 to 2023
            • Bmw M235ix 2020 to 2023
            • Bmw M240i 2017 to 2023
            • Bmw M240ix 2017 to 2023
            • Bmw M3 2014 to 2023
            • Bmw M340i 2019 to 2023
            • Bmw M340ix 2019 to 2023
            • Bmw M4 2014 to 2023
            • Bmw M4 Gts 2017
            • Bmw M440i 2021 to 2023
            • Bmw M440ix 2021 to 2023
            • Bmw M5 2012 to 2023
            • Bmw M5 Cs 2022
            • Bmw M550ix 2017 to 2023
            • Bmw M6 2012 to 2018
            • Bmw M760ix 2017 to 2022
            • Bmw M8 2020 to 2023
            • Bmw M850ix 2019 to 2023
            • Bmw X1 2016 to 2023
            • Bmw X2 2018 to 2023
            • Bmw X3 2018 to 2023
            • Bmw X4 2018 to 2023
            • Bmw X5 2010 to 2023
            • Bmw X6 2009 to 2023
            • Bmw X7 2019 to 2023
            • Bmw Xm 2023
            • Bmw Z4 2019 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: 73327422072

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            4.8 ★★★★★
            Based on 18 reviews
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            S
            Sean Bozarth
            Pawtucket, US
            ★★★★★ 5
            Comfortable, Lightweight, and Easy for Everyday Wear
            Size: 8, Color: Black/Geyser
            I picked these up mainly for casual wear and beach days, and they’ve honestly been a great grab. They were comfortable right out of the box, which isn’t always the case with flip flops. The footbed has a little bit of cushion without feeling overly soft or flimsy. They feel supportive enough for running quick errands but still light and easy to slide on. The fit was true to size for me. They’re maybe slightly roomy in the toe area, but not in a way that bothers me. The straps don’t rub or dig in, which is usually my biggest concern with sandals like this. They also seem well made. The material feels durable and not cheap, and they have that simple Columbia look that works with shorts or just something casual around the house. Overall, solid pair of flips. Nothing flashy, just comfortable and reliable. I’d definitely buy them again.
            WAS THIS REVIEW HELPFUL?YesReportShare
            Reviewed in the United States on February 19, 2026
            R
            Verified Purchase
            Richard H Harrison
            Boise, US
            ★★★★★ 5
            Great toy to play fetch with the dogs.
            Color: Black/White, Size: Large
            These balls are a great dog toy to play fetch with your dogs. This not the first ball I have gotten for the dogs. Just the right size and weight for medium sized dogs. I have less concerns about them possibly choking on these soccer balls versus tennis balls. So I can leave them out for them to play with. The are easy to inflate using the included pump. My only concern is the durability of the straps as my dogs have almost torn off one the straps of the previous ball I purchased.
            WAS THIS REVIEW HELPFUL?YesReportShare
            Reviewed in the United States on May 2, 2026
            K
            Verified Purchase
            Kendall
            Birmingham, US
            ★★★★★ 5
            Dog parents; buy this now!
            Color: Black/White, Size: Medium
            A must have for my pup! I have bought this at least 5 times. She eventually pops them and I need a new one. It's an amazing toy that she can thrash and we can play fetch with
            WAS THIS REVIEW HELPFUL?YesReportShare
            Reviewed in the United States on May 1, 2026
            T
            Verified Purchase
            Tricia Rees
            Lexington, US
            ★★★★★ 5
            Westie LOVES this toy
            Color: U.S.A, Size: Medium
            My pup (Westie) adores this toy. This is actually our second one. The ball itself is resistant but the straps will be obliterated. Would definitely recommend! Totally worth the price!
            WAS THIS REVIEW HELPFUL?YesReportShare
            Reviewed in the United States on May 11, 2026
            R
            Verified Purchase
            regina
            New York, US
            ★★★★★ 3
            Not durable
            Color: Black/White, Size: Large
            If you have a dog who likes to pop things then this toy isn't it. Within 5 min she had this ball popped. It was made to sound like it was durable for this type of thing but it definitely is not so just be aware. Now if you have a dog who doesn't pop things easy then this would be a good toy
            WAS THIS REVIEW HELPFUL?YesReportShare
            Reviewed in the United States on May 15, 2026

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