Description
Includes: – Inner Head O-Ring
Fits Models: – Mercury Mariner
Model Years: – Check fitment before purchase
Submodels: – Applies to listed models
Engine Options: – 3.0L V6, 4.3L V6, 5.0L V8, 5.7L V8
Description: This Inner Head O-Ring is designed for use in Mercury Mariner outboard engines ranging from 200 to 300 horsepower. It ensures a secure seal between the cylinder head and the engine block, preventing leaks and maintaining optimal engine performance.
Features: – Premium-grade material for durability – Precision-engineered for a factory-spec fit – Designed to withstand high temperatures and pressures – Essential for maintaining engine integrity – Compatible with various Mercury Mariner engine configurations
Part Number: 505-53









