Prevent pressure loss and overheating with a new expansion tank cap
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Brand:
ES#:
4304653
Mfg#:
17117639022
In Stock
ON SALE!
SAVE 15%
$13.99
This product was last offered at the strikethrough price on 06-03-2026
Includes connector housing with terminals and seals. Commonly used for the coolant level sensor.
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Brand:
ES#:
4772597
Mfg#:
61132359999
In Stock
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$10.99
This product was last offered at the strikethrough price on 06-13-2026
Plastic has a limited lifespan - replace every 80,000 miles
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Brand:
ES#:
3148877
Mfg#:
17111741167
Ships in 1 Business Day
$69.99
This product was last offered at the strikethrough price on 10-22-2026
Does not include level sensor and cap
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Brand:
ES#:
37936
Mfg#:
17111741167
In Stock
2% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$164.99
This product was last offered at the strikethrough price on 10-26-2026
Replace worn or missing pieces.
5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply We Price Match - Give Us A Call or Chat!
Brand:
ES#:
3672879
Mfg#:
17117639022
In Stock
ON SALE!
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$14.99
This product was last offered at the strikethrough price on 05-14-2026
Replace when performing cooling service.
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Brand:
ES#:
205244
Mfg#:
17111742231
In Stock
$17.99
This product was last offered at the strikethrough price on 10-22-2026
Does not include level sensor and cap
2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply We Price Match - Give Us A Call or Chat!
Plastic has a limited lifespan - replace every 80,000 miles
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply We Price Match - Give Us A Call or Chat!
Brand:
ES#:
2814078
Mfg#:
17111741167
Ships in 1 Business Day
$47.99
This product was last offered at the strikethrough price on 07-09-2026
Replace when performing cooling service.
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Brand:
ES#:
2187552
Mfg#:
17111742231
Ships in 1 Business Day
$11.99
This product was last offered at the strikethrough price on 08-13-2026
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Brand:
ES#:
4860936
Mfg#:
17117639022
Ships in 1 Business Day
$14.99
This product was last offered at the strikethrough price on 05-07-2026
Replace worn or missing pieces.
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply We Price Match - Give Us A Call or Chat!
Replace your cracked or faded expansion tank.
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Brand:
ES#:
2868201
Mfg#:
17111741167
Special Order: No Guaranteed ETA
$90.99 USD
Free Shipping
Lifetime Replacement
More About Cooling Expansion Tank Parts
A common source of overheating problems is a broken or leaking coolant expansion tank. Replace it with an OEM coolant expansion tank or quality aftermarket expansion tank to prevent future woes.
Lifetime Replacement
