Keep proper pressure in your coolant system
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Brand:
ES#:
4818658
Mfg#:
5Q0121321
Ships in 1 Business Day
ON SALE!
SAVE 24%
$15.99
This product was last offered at the strikethrough price on 05-02-2026
Composed of genuine Audi parts to fix your leaking coolant expansion tank.
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Brand:
ES#:
2586894
Mfg#:
8E0121403KT
In Stock
ON SALE!
SAVE 44%
$158.99
This product was last offered at the strikethrough price on 02-08-2026
Everything you need to replace your faded, cracked, or leaky expansion tank!
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Brand:
ES#:
2649683
Mfg#:
8E0121403AKT2
Ships in 1 day
ON SALE!
$65.99
This product was last offered at the strikethrough price on 05-02-2026
Replace your old coolant tank and stop those pesky leaks
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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
Seals the expansion tank cap to the reservoir. 28.5x3.8
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Keep proper pressure in your coolant system
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 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
