Mercury Vent Control Ring for Pro Max Props and Select 75–150 HP Models (Part #8M0086395)

Description

Reduces ventilation when used with Pro Max propellers on 4.8″ gearcase; also recommended to use on the Mercury 150 FS and 75 ‑ 115 CT with Trophy Plus propellers.

The vent control ring allows minimal exhaust to flow between gearcase and ring during planing. Place the ring chamfer side up on the floor, press the propeller into the ring.