Double pipe — a genuine BMW part, number 64 12 8 386 544. The number stamped on the part is 64128386544; BMW's catalog files it under the short number 8386544. You will find it on our AC & Climate Control shelf, under Other Heater and Air Conditioning parts.
It fits every E46 body style (316i, 316ti, 318i and 318ti, 2001–2004), with the N40, N42, N45 or N46 engines.
BMW draws it on the water hoses/water valve (64_1169) diagram. It weighs about 800 g (1.8 lb).
We have not had one on the shelf yet. Request it and we will tell you when one comes off a car.
