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Thermostat Kit for Mercury Mariner 40-60 HP 110F 3 Cyl 850055A2 59078A2 13141

Thermostat Kit for Mercury Mariner 40-60 HP 110F 3 Cyl 850055A2 59078A2 13141

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$92.39
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This Thermostat Kit is a replacement thermostat assembly compatible with Mercury Mariner 40-60 HP 3-cylinder outboard engines and matches OEM Part# 850055A2, 59078A2, 13141.
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I needed a forklift part and wasn’t sure which one fit. They asked for the model and serial number, got back to me quickly, and made sure I ordered the right one. Really helpful.

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Product Overview

This thermostat kit regulates engine temperature for Mercury Mariner 40-60 HP outboard motors. It ensures optimal operating temperature for 3-cylinder engines. Designed as a direct replacement, it restores cooling system performance.

Key Features & Performance

  • Precision-engineered to open at 110��F for efficient cooling
  • Includes gasket and seals for a complete installation
  • Corrosion-resistant materials for marine environment
  • Direct fit replacement for Mercury Mariner 40-60 HP 3-cylinder models
  • Meets OEM specifications for reliable performance

Fitment & Compatibility

  • Mercury Mariner 40 HP (3-cylinder)
  • Mercury Mariner 50 HP (3-cylinder)
  • Mercury Mariner 60 HP (3-cylinder)

Common Uses

  • Replacing worn or stuck thermostats in Mercury Mariner outboard engines
  • Restoring proper engine temperature regulation for improved performance
  • Routine maintenance during cooling system overhaul

Technical Specifications

  • Part Number(s): 850055A2, 59078A2, 13141
  • Temperature Rating: 110��F
  • Engine Type: 3-cylinder

Frequently Asked Questions

Q: What is the opening temperature of this thermostat? A: This thermostat opens at 110��F to regulate engine temperature for optimal performance.

Q: Is this kit compatible with Mercury 40 HP 4-stroke? A: This kit is designed for 3-cylinder Mercury Mariner outboards; verify your engine's cylinder count before purchase.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.

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