Sierra Marine Exhaust Protector Valve

The Sierra Marine Exhaust Protector Valve is a rubber flapper-style exhaust protector, also called an exhaust flapper valve. It helps keep water from backing up into the engine exhaust system, for example in following seas or when maneuvering astern.

Key Features:

• Compounded rubber flapper design helps keep water out of the exhaust system
• Weather-resistant EPDM construction with a UV stabilizer
• Includes a stainless steel clamp
• Aftermarket replacement for Mercury/Mariner/MerCruiser exhaust protector valves, including OEM 34765A1 and 34765A2 on applicable models

Sierra supplies aftermarket replacement parts for marine engines and drives. Its parts are engineered to meet or exceed OEM standards and to hold up in harsh marine environments. Choose the variant that matches your exhaust outlet.