SIERRA Mercury/Mariner Powerhead Base Gasket – 18-0103

Description

SIERRA Mercury/Mariner Powerhead Base Gasket – 18-0103

A replacement powerhead-to-base sealing gasket for specified Mercury and Mariner outboard engines.

• Powerhead base gasket for applicable Mercury/Mariner outboards
• Seals the powerhead mounting interface
• Replaces multiple superseded Mercury gasket numbers
• Cross-references to GLM 30990
• Verify engine model/serial range or OEM number before installation

Powerhead-base service is application-specific. Clean mating surfaces and follow the factory service procedure for sealants, torque values and tightening sequence.

Specifications

• Part number: 18-0103
• Component: Powerhead base gasket
• Application family: Mercury / Mariner outboards

Interchange / Replaces

• Mercury Marine: 27-37725, 27-72496, 27-79650, 27-796501
• GLM: 30990