Sierra Adapter Plate Gasket for Mercury/Mariner Outboard Engines

Sierra Adapter Plate Gasket line offers replacement adapter plate gaskets (also called driveshaft housing or exhaust adapter plate gaskets) for Mercury and Mariner outboard engines. The gasket seals the joint between the powerhead and the adapter plate. This helps keep the engine's internal systems sealed during operation.

Key Features:

• Replacement gaskets made for Mercury/Mariner outboard motors
• Meets or exceeds original equipment quality
• Built with marine-grade materials for use in demanding marine environments
• Interchanges with original Mercury Marine part numbers and common aftermarket cross-references, which are listed on each individual part
• Machined for a precise fit against the mating surfaces

Sierra is a well-known marine engine parts brand. Using a quality adapter plate gasket during an outboard rebuild or service helps you get a reliable seal and keeps the engine running well. Choose the part number that matches your engine from the options on this page.