Radiator Fan Dual Thermo Switch For BMW 3 5 6 7 Series M3 Z3 M5 E30 E36 E34 61311378073 Replace worn out parts Ready for Install Straight out of the box Fast Shipping! Top Quality! 90 days Warranty! Brand New Cooling System. Manufacture part Number:6F3 - 61311378073 - 2.1 oz