Aluminum design - Located on the front right of the engine block
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat! Aluminum housing used on the B5 S4 - Commonly used as a factory upgrade for the OE plastic piece
Keep your cooling system efficient with a new thermostat and housing
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! Aluminum housing used on the B5 S4 - Commonly used as a factory upgrade for the OE plastic piece
Brand:
ES#:
3659374
Mfg#:
07812112JKT4
In Stock
ON SALE!
$180.99
This product was last offered at the strikethrough price on 01-03-2026
Prevent overheating and premature engine wear
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Located on the front right of the engine block
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Ensure a proper seal when installing your new thermostat
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Maintain proper operating temperature with a new thermostat, housing and hardware
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
2771457
Mfg#:
078121121KKT
Ships on Sep 30, 2026
ON SALE!
SAVE 13%
$106.99
This product was last offered at the strikethrough price on 01-03-2026
Located on the front right of the engine block
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Brand:
ES#:
2631520
Mfg#:
078121121K
Special Order: No Guaranteed ETA
$77.40
This product was last offered at the strikethrough price on 01-29-2026
Install new hardware with your new parts. M6x32
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Secures the thermostat housing to the engine
Brand:
ES#:
467636
Mfg#:
N10205604
Ships in 1 day
33% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$1.48
This product was last offered at the strikethrough price on 06-04-2026
Located on the front right of the engine block
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Your thermostat helps regulate engine temperatures by allowing the coolant to circulate through the radiator once it opens. If it fails, this might mean it never closes, but worst case, it could mean your coolant doesn't get to the radiator. Stay ahead of cooling issues by replacing your thermostat regularly with an OEM thermostat or quality aftermarket thermostat from our selection.
Lifetime Replacement
