W140 ACC Mono Valve Assembly

[rsmcmahon]

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