Set of 2 Head O-Rings for Mercury Mariner 200-300 HP (Replaces 505-51, 25-818573, 18-7400)

Includes: - Set of 2 Head O-Rings

Fits Models: - Mercury Mariner

Model Years: - Check fitment before purchase

Submodels: - Applies to listed models

Engine Options: - 200 HP, 225 HP, 250 HP, 300 HP (various engine codes)

Description: This set of 2 head O-rings is designed for Mercury Mariner outboard engines ranging from 200 to 300 horsepower. These O-rings are essential for maintaining a proper seal in the engine head, preventing leaks. They are direct replacements for part numbers 505-51, 25-818573, and 18-7400.

Features: - Commercial-grade materials for durability - Direct replacement for bolt-on installation - Compatible with multiple horsepower ratings - Ensures a proper seal to prevent leaks - Designed for reliable engine performance