Coolant Hose, URO - Air Box Thermostat to Throttle Body - E36 325i/M3

This aftermarket hose connects the airbox thermostat to the cylinder head on M50 and S50 6-cylinder engines. When the throttle body needs coolant flow the thermostat will open and take warm coolant from this hose.

This part is listed by BMW as BMW part number 13541735174 (135-4-1-735-174) and is described as URO Parts Coolant Hose for Throttle Body Heating on E36 325i, 325is, M3 (1992, 1993, 1994, 1995)