Description
SIERRA 3 Inch EPDM Exhaust Flapper Valve with Clamp – 18-4456
Sierra 18-4456 is a exhaust flapper valve with clamp for Marine exhaust outlets requiring a 3-inch (76.2 mm) outside flapper valve, including applications matching MerCruiser 34765-series references.
- UV-stabilized EPDM flapper helps reduce following-sea and shutdown water backflow through the exhaust outlet.
- Supplied with a stainless-steel clamp for installation on a 3-inch outside exhaust tip.
- Cross-references MerCruiser 34765A1 / 34765A2 / 34765Q02, GLM 89240 and Mallory 9-44000.
- Designed as a direct marine-service replacement where the listed Sierra/OEM reference is specified.
- Compare the original part number, dimensions and assembly configuration before installation.
Fitment for marine engine and drive service parts can vary by model, serial number, drive/gearcase, cooling configuration and prior OEM supersessions. Compare the original OEM number and physical configuration before installation, and follow the applicable manufacturer service procedure and torque specifications.
Specifications
- Manufacturer: Sierra
- Part Number: 18-4456
- Part Type: Exhaust flapper valve with clamp
- Application: Marine exhaust outlets requiring a 3-inch (76.2 mm) outside flapper valve, including applications matching MerCruiser 34765-series references.
- Nominal Outlet: 3 in (76.2 mm)
- Flapper Material: UV-stabilized EPDM
- Clamp: Stainless steel
Interchange / OEM References
- MerCruiser: 34765A1, 34765A2, 34765Q02
- OMC: 509494
- GLM: 89240
- Mallory: 9-44000
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