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Muzza416
09-22-2016, 09:02 AM
Does anyone know which way the coolant flows through the heater matrix I'm trying to fit a webasto heater and can't figure it out
Any help most appreciated

Aqua Puttana
09-22-2016, 11:20 AM
Does anyone know which way the coolant flows through the heater matrix I'm trying to fit a webasto heater and can't figure it out
Any help most appreciated
The heater valve tucked up near the cabin air filter is the inlet side.

The picture in this post shows where I connected my Espar jumper hose to the heater valve inlet side. Your 2003 should be similar.

http://sprinter-source.com/forum/showthread.php?t=50483

You can trace your piping back from there to find a suitable place to insert the heater in the system.

vic

Muzza416
09-22-2016, 12:38 PM
Thanks for the reply I presume this is the hose on the inlet side of the engine ? (2.7l)
Il upload some pics later to show my setup I've got a rear mounted heater matrix that I'm not sure I've plumbed in right