SIERRA 4 in. Exhaust Water Shutter for MerCruiser, 2-Pack – 18-2732-9

Description

SIERRA 4 in. Exhaust Water Shutter for MerCruiser, 2-Pack – 18-2732-9 is a two-pack of 4-inch exhaust water shutters for selected MerCruiser stern-drive exhaust systems.

The shutter acts as a one-way flapper in the exhaust path to help limit water backflow toward the engine when conditions create reverse flow in the exhaust system.

Key Features

• Two exhaust water shutters per package
• Designed for compatible 4 in. MerCruiser exhaust systems
• Flapper-style design helps resist exhaust-water backflow
• Cataloged for selected MerCruiser #1-drive exhaust arrangements
• Replaces 807166A3 and 14348-series references

Specifications

• Manufacturer Part Number: 18-2732-9
• Product Type: Exhaust water shutter / flapper
• Package Quantity: 2
• Nominal Exhaust Size: 4 in.
• Application: Selected MerCruiser exhaust systems

Interchange / Cross Reference

• MerCruiser 807166A3
• MerCruiser 14348 / 14348A1 / 14348A2
• GLM 89170
• Mallory 9-42802

Verify exhaust-hose/shutter size and the engine/drive application before ordering.