Genuine OEM Volvo Retarder / Differential Locking Switch 1578736
A brand new Genuine OEM Volvo retarder / diff locking switch compatible with classic Volvo heavy-duty truck models Volvo F Series F10, F12 and F16 from 1973 to 1994. Depending on the specific configuration, it serves as a switch for the retarder system or the differential lock.
Volvo part number 1578736

















