Includes a Water Pump & Bolts, Thermostat Assembly, Thermostat Hose w/ Aluminum Flange, Water Pump Hose, Lower Radiator Hose, and Water Pump to Thermostat Hose
2X Entries Into Our F80 M3 Sweepstakes
Includes a 74c race thermostat, Pierburg water pump, and ECS silicone hoses
10X Entries Into Our F80 M3 Sweepstakes For vehicles with plastic thermostat housing
Brand:
ES#:
4172080
Mfg#:
11517586925KT15
In Stock
ON SALE!
SAVE 16%
$892.99
This product was last offered at the strikethrough price on 09-09-2026
Over time, heat cycles degrade the plastic components, internal electronics fail, and you're left stranded with a yellow (or worse, red) coolant warning light on your dash.
10X Entries Into Our F80 M3 Sweepstakes
Brand:
ES#:
5481358
Mfg#:
11517604027KT2
In Stock
ON SALE!
$494.99
This product was last offered at the strikethrough price on 09-10-2026
Includes a new water pump, heat management module, coolant outlet pipe, and all new o-ring seals
For models without the 48V Mild Hybrid package For vehicles with the B58D (Gen2) engine only - Will not fit the earlier B58A (Gen1) engine
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
