Thermostat 54C for Mercury Mariner 200HP-300HP Optimax (Replaces 8M0057307)

Includes: - Thermostat 54C

Fits Models: - Mercury Mariner

Model Years: - Check fitment before purchase

Submodels: - Common trims include 200HP, 225HP, 250HP, 300HP; chassis codes may vary by year; body style is typically outboard motor

Engine Options: - 2.5L V6, 3.0L V6; engine codes may include 2.5L Optimax

Description: This thermostat is designed for Mercury Mariner outboard motors ranging from 200HP to 300HP, specifically for the Optimax series. The part replaces Mercury part number 8M0057307, providing a reliable solution for maintaining your outboard motor's cooling system.

Features: - Direct replacement for 8M0057307 - Compatible with Mercury Mariner 200HP-300HP Optimax models - Durable construction for long-lasting performance - Bolt-on installation

Part Number: 8M0057307