Includes a tank, cap, and necessary mounting hardware
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Brand:
ES#:
2581883
Mfg#:
1K0121407AKT1
In Stock
ON SALE!
SAVE 19%
$34.99
This product was last offered at the strikethrough price on 05-02-2026
Wrap your coolant ball, top to bottom, with carbon fiber!
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Brand:
ES#:
3575799
Mfg#:
025263ECS01-01
In Stock
ON SALE!
$234.99
This product was last offered at the strikethrough price on 05-02-2026
Keep proper pressure on your coolant, replaces any modern blue or black cooling cap
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Brand:
ES#:
4691207
Mfg#:
420121321
In Stock
ON SALE!
SAVE 14%
$34.99
This product was last offered at the strikethrough price on 05-02-2026
See your coolant levels clearly again, comes with coolant level sensor
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Brand:
ES#:
4766175
Mfg#:
1K0121407A
In Stock
ON SALE!
SAVE 43%
$27.99
This product was last offered at the strikethrough price on 01-29-2026
Select your own expansion tank cap to go along with your ECS Carbon Fiber Expansion Tank Cover Kit
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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!
See your coolant levels clearly again, comes with coolant level sensor
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! We Price Match - Give Us A Call or Chat!
See your coolant levels clearly again, comes with coolant level sensor
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! We Price Match - Give Us A Call or Chat!
Keep proper pressure on your coolant, replaces any modern blue or black cooling cap
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
2149010
Mfg#:
420121321
Ships in 2 Business Days
11% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$326.99
This product was last offered at the strikethrough price on 02-26-2026
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
