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 10X Entries For Our 25th Anniversary Sweepstakes!
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
Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For Vehicles with CYMC Engine Code Only
Brand:
ES#:
4143346
Mfg#:
8W0121405L
Ships in 1-2 days
8% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$201.99
This product was last offered at the strikethrough price on 06-12-2026
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 3 Business Days
9% 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 06-12-2026
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#:
4858532
Mfg#:
2Q0121321A
In Stock
ON SALE!
SAVE 22%
$19.99
This product was last offered at the strikethrough price on 05-02-2026
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!
Brand:
ES#:
3690266
Mfg#:
5Q0121321
Back Ordered
$18.99
This product was last offered at the strikethrough price on 04-02-2026
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!
Install a brand new expansion tank with a new cap and hardware
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Fits from production date 11/13/2017 up to 1/14/2019
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!
Replace your cracked or dried out components - Used in the lower portion of the expansion tank
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
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
