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Mercury Thermostat Housing Assembly 863457A2 4.3 5.0 5.7 350 MAG Mercruiser by FASWORX

$345.00

Confirm quantity, package contents, selected variation, current offer details, and store terms before placing the order.

  • 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.
SKU: D-B0D6M94NMZ Category:

Description

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.

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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.

Exact identity, part numbers, model references, and available compatibility evidence

Buying guidance

Quick decision

An identity-first thermostats listing organized around stable product references and available compatibility evidence.

Fit and size notes

  • Verify the referenced part number: 863457A2.
  • Match the complete identifier, side, position, connector, dimensions, and visible design with the existing part.
  • Treat uncertain vehicle notes as a buying aid, not as a confirmed fitment guarantee.

Specification notes

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

Before you buy

  • Verify the referenced part number: 863457A2.
  • Match the complete identifier, side, position, connector, dimensions, and visible design with the existing part.
  • Treat uncertain vehicle notes as a buying aid, not as a confirmed fitment guarantee.