Diesel engine Shutoff Switch at Ignition Key - Get a spare while still available. This SHOULD BE REPLACED if you find oil inside the switch.
Fits the following: All 116 123 and 126 Chassis Diesels from 1977-1985. This is a brand new Genuine Mercedes Steering lock vacuum valve that is located on the back of your ignition lock assembly. We include 2 pieces of correct sized rubber vacuum hose as shown.
116 123 126 Diesel Steering Lock Vacuum Valve
$29.75Sale
$19.50
SKU:
VAC-COMSLVV 
Product Details
The vacuum lines that control your engine shutoff go from the engine compartment to this valve at the lock assembly. If you are having problems with the car not shutting off this could be the culprit!