BMW OEM Radiator cap for 533i 535i by REUTTER BMW OEM Radiator Expansion Tank Cap E12 E3 E23 E24 E9 1602 2002 17 11 1 100 848 D=60 MM 1.0 BAR This part is used in COOLING SYSTEM - WATER HOSES -- Cooling water pipes/expansion tank -- EXPANSION TANK -- Radiator -- RADIATOR/EXPANSION TANK/FRAME -- RADIATOR/FRAME -- TRANSMISSION OIL COOLING/OIL COOLER -- Manufacturer Warranty: 24000 miles or 2 years Please see Product Description below for vehicle compatibility