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Mercury Thermostat Housing Assembly 863457A2 4.3 5.0 5.7 350 MAG Mercruiser by FASWORX | Repair and Installation Guide

$345.00

SKU: C-B0D6M94NMZ Category:

Review this component in the context of the repair, installation access, nearby parts, and the result the job is intended to achieve.

  • Thermostat housing assembly for Mercury Mercruiser engines.
  • This replaces part number 863457A2.
  • Fits both Alpha and Bravo 350, 377, 383 MAG, 4.3L, 5.0L, 5.7L, and 6.2L MPI engines with the water distribution housing.
  • For raw water-cooled engines with a 3-point drain system.
  • Enhances cooling system efficiency. Works in conjunction with the engine’s cooling system to improve overall heat-dissipation.

Before you order
  • Confirm the part number, position, dimensions, and connector details shown on this page.
  • Compare the listing with the part currently installed on your vehicle.

Description

Review this item in the context of the repair, installation access, nearby parts, and the result the completed job is intended to achieve.

Brand: FASWORX
Manufacturer ‎FASWORX
Brand ‎FASWORX
Model ‎Thermostat
Country of Origin ‎China
Item model number ‎13630
Exterior ‎Polished
Manufacturer Part Number ‎13630, 863457A2

This thermostat housing assembly for Mercury Mercruiser engines regulates temperature to enhance efficiency, performance, and longevity. It prevents overheating, reduces maintenance, and ensures stable, efficient operation, crucial for reliable marine engine performance.

Product facts

Specifications

Canonical product
MP-US-B0D6M94NMZ
Source product ID
B0D6M94NMZ
Category
Replacement Parts / Engine Cooling & Climate Control / Thermostats
Available images
2
Referenced part numbers
863457A2

Vehicle information

Available fitment details

Listing compatibility notes

  • Fits both Alpha and Bravo 350, 377, 383 MAG, 4.

Fitment data is provided as a buying aid. Verify the listing against your vehicle and existing part before ordering.

Repair scenarios, installation, companion parts, and use outcomes

Buying guidance

Quick decision

Review this thermostats in the context of the repair and the surrounding components.

Repair scenario

  • Identify the symptom and confirm that this is the component required by the repair.
  • Inspect nearby connectors, fasteners, and mating surfaces before installation.

Installation notes

  • Use the listing instructions when present and follow the vehicle service procedure.
  • Professional installation may be appropriate when the repair requires special tools or calibration.

Companion parts

  • Inspect nearby fasteners, connectors, seals, fluids, and wear items before starting the repair.
  • Use the service procedure and the visible package contents to identify any additional parts or tools required.

Before you buy

  • Verify the referenced part number: 863457A2.
  • Compare the listing title, photos, package contents, and specifications with the part being replaced.
  • Confirm vehicle compatibility and installation requirements before ordering.

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