STEP 5 OF 5

2021 BMW 4 Series — Cooling System

4 OEM parts available. Click any part for details and fitment info.

CU13069
Radiator
OE-spec aluminum core radiator
RT1133
Thermostat
195°F thermostat with gasket
RH348
Upper Radiator Hose
Molded rubber upper radiator hose
WP9305
Water Pump
OEM-equivalent cast-iron water pump