SIERRA Mercury/Mariner Adapter Plate Gasket – 18-0879

Description

SIERRA Mercury/Mariner Adapter Plate Gasket – 18-0879

The SIERRA 18-0879 is an adapter-plate gasket for applicable Mercury and Mariner outboards. It seals the adapter-plate joint between major powerhead/exhaust housing components and is commonly cross-referenced to Mercury 27-38501 and 27-37724-series numbers.

• Adapter-plate gasket for Mercury/Mariner outboards
• Used at the powerhead/exhaust adapter-plate joint
• Commonly applied to selected 30 Jet and 40-60 HP engines depending on model/year
• Direct aftermarket replacement for several Mercury gasket references
• Single service gasket

Confirm the engine or drive model and serial number against the listed OEM interchange before ordering; closely related marine engines can use different gaskets or seals across production changes.

Specifications:

• Product type: adapter plate gasket
• Application: Mercury/Mariner outboard, model dependent

Interchange / Cross-Reference:

• GLM 31400
• Mallory 9-60042
• Mercury Marine 27-37724
• Mercury Marine 27-38501
• Mercury Marine 27-385011