Heater Core Return Hose, BMW - E30 325i 88+

This large & intricate coolant hose is a heater return line for for 1988+ E30 325i, 325is, 325iX, and 1988 “Super E” 325e. It runs from the heater core to the engine thermostat housing and to the expansion tank. If you are replacing heater hoses, or overhauling your E30 M20 6 cylinder's cooling system we recommend this hose to do the job right. 

Some E30s were retrofitted by BMW with a heater thermostat on the firewall. These cars used a drain hose to bypass the heater core and dump hot coolant into this main Heater Core Return Hose. If you have this thermostat and buy the Heater Core Return Hose you will need to cut the new hose and re-use the T-connector from your original hose (or buy a new T-connector).

This part is also used to convert the 1987 cooling system to the late 1988 E30 cooling system, which also requires the radiator, expansion tank, and additional hoses.

Quantity Per Vehicle - 1

Only For Model Year 1988 And Later

This is a Genuine BMW E30 heater return hose with a two year warranty. Buying a Genuine part will usually be more expensive than an OEM or aftermarket brand but you are assured that it meets BMW's designs for fitment, performance, and longevity. It will also be the very latest design, incorporating any updates or revisions that an aftermarket brand typically will ignore.