Keep proper pressure in your coolant system
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Brand:
ES#:
4004591
Mfg#:
5Q0121321
In Stock
ON SALE!
$16.99
This product was last offered at the strikethrough price on 06-29-2026
Replace your cracked or faded expansion tank.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! We Price Match - Give Us A Call or Chat!
Install new hardware with your new parts.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat! Used in securing the coolant expansion tank
Keep proper pressure in your coolant system
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
4818658
Mfg#:
5Q0121321
In Stock
ON SALE!
SAVE 24%
$15.99
This product was last offered at the strikethrough price on 05-02-2026
Plastic pressure cap for expansion tank
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Brand:
ES#:
4220586
Mfg#:
8E0121321
In Stock at Vendor
ON SALE!
$18.99
This product was last offered at the strikethrough price on 06-29-2026
Everything in one kit to replace your coolant expansion tank
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Brand:
ES#:
2587387
Mfg#:
8E0121403KT3
In Stock
ON SALE!
SAVE 50%
$140.99
This product was last offered at the strikethrough price on 01-09-2026
Spring band clamp used in various areas on your European vehicle
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Secures expansion tank vent hose on both sides
Brand:
ES#:
280095
Mfg#:
06B145917A
Ships in 1 day
11% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$17.99
This product was last offered at the strikethrough price on 07-01-2026
Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank
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Brand:
ES#:
2862682
Mfg#:
376737131
In Stock at Vendor
$49.98
This product was last offered at the strikethrough price on 03-06-2026
Replace your old coolant tank and stop those pesky leaks
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! We Price Match - Give Us A Call or Chat!
Brand:
ES#:
4151835
Mfg#:
8E0121403A
Ships in 3 Business Days
ON SALE!
$29.99
This product was last offered at the strikethrough price on 06-29-2026
Plastic pressure cap for expansion tank
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! We Price Match - Give Us A Call or Chat!
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
