The overflow expansion tanks are exposed to incredible heat and pressures, causing the plastic hose fittings and joints to crack without warning. Running low on coolant can cause your BMW to overheat, leading to expensive engine problems. With the high failure rate of these expansion tanks, we recognise that the market has been flooded with notoriously cheap aftermarket replacements. This is why we offer an expansion tank that has been manufactured by original equipment supplier NRF.

OEM Part Number: 17117573781
Alternative Part Number: 17137787039
Alternative Part Number: 17111436413
Behr Hella Part Number: 8MA 376 755-111
NRF Part Number: 8107