W140 ACC Mono Valve Assembly
 

Does anyone have any insight into the differences between the 2 ACC Mono Heater Valves (pictured below) - besides the pluming on the base of the units? Since the ACC Mono Valve Heater Valve without the Rear A/C is priced around $475-500 and the ACC Mon Valve with Rear A/C is $240-300. My car does NOT have the rear A/C, but I’m thinking of purchasing ACC Mon Valve with Rear A/C at a price of $240-300 and moving the duo valve and auxiliary coolant pump to the existing pluming.

Since I don’t have the specifications on the auxiliary coolant pump or duo valve on either unit, I’m unsure if my quest to save money is worth trying. From looking at the photos, the physical connectors, etc look the same on both parts, just the pluming on the base is different.


(1) ACC Mono Valve Heater Valve
Electromagnetic heater valve

(2) ACC Mono Valve Heater Valve with Rear A/C
Electromagnetic heater valve

Anyone have a resource for finding information about the mono valves or auxiliary coolant pumps?

Not much action, huh? I would call Phil at Fastlane, and ask him if he can cross-reference the part numbers on the valves and the pump themselves. If they're the same numbers, I'll bet you could use them.

ACC Mono vales
 

Hi RXussell, I'm not much help on this one either

Sorry
Phil

I've been looking at the photos. I think you are on to something. You should be able to buy the 3 hose assembly and just add two Y connectors to adapt it to the front dash use. That is assuming that the connectors are the same.

I'll compare what I have in the front of my car to the photos off of http://v12uberalles.com/Rear_AC_System.htm.

The photos in the first entry of this page sure look like they have the same electrical connections.

-Jim

No
 

This valve can not deliver the required volume for balanced heating.








Have a great day.