O.S. Engine OS27216100 Disc Valve Pin for 61VR and 65VR Engines  [OS27216100]

Disc valve centre pin for 61VR/65VR engines

This O.S. Engine disc valve pin is intended for direct replacement in engines marked 61VR and 65VR. It serves as the centre locating pin in the disc valve assembly and should be used when the original part shows wear or permits play.

Fitment is confined to the engine models specified, so confirm your engine code before purchasing. On replacement, make sure the disc plate sits flat and that the pin is concentric to avoid binding. Remove any grit from the cavity and check mating faces for damage prior to installation.

In tuning scenarios, a securely seated disc valve pin supports consistent valve motion, aiding throttle response and smoother midrange behavior by preventing lateral movement of the disc valve. Use this part when performing routine service or tracing issues around idle and throttle response.