Make sure yours matches. No valve included. Good hoses. These were found on most 1981 to 1985 126 models
This is the exact part you will receive. All hoses are still soft and usable.
Some Early W126 U.S. Model Monovalve Housing and Hoses.
$46.00Sale
$30.00
SKU:
CCP-L126MONOHOUSE 
Product Details
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1981 to 1991 Monovalve Climate Control Electric Water Pump Upgrade
Revised 3/9/26 Auxiliary pump replacement for 1981 to 1985 W123, 1982 to 1989 R107 and 1981 to 1991 W126 with ACCIII automatic climate control.
Since the original old style Bosch electric pumps are no longer available, Kent decided to come up with a good alternative. He went to work to adapt the newer style pump found on most Mercedes of the 1990s.
$26.40
Late R107, Late W123 and All W126 Heater Mono Valve Repair Kit
A torn diaphragm in the heater control monovalve is the number one reason for sporadic cabin heat, but it is not the only reason! With Kent's video tips, it is easy to install.
This fits the U.S. models with automatic climate control which include the 1982 to 1989 R107 380SL, 500SL, and 560SL + the 1982 to 1985 W123 ALL models + the 1981 to 1991 W126 sedan and coupes. This is an easy fix that you can do yourself.