Club 80-90 Forums

Have started looking at webasto/eberspacher coolant heaters, as i'm thinking of putting one in for next winter. Some come without the coolant pump attached. So as i'm now tdi, i have a redundant aux pump still plumbed in. Does this pump push coolant around the heater matrix's or just around the head?
cheers

Hi , I think it pumps a small circuit that basically pumps water around a flange that the oil filter mates to.hope that helps