Description

Mitsubishi OEM Thermostat for Evo 8 — 4G63 — Part #MN143463

Firstly, Buy Mitsubishi OEM Thermostat for Evo 8 online at Evomotorparts. Keep your Mitsubishi Lancer Evolution VIII cooling system operating with the correct factory-specification component using the Mitsubishi OEM Thermostat for Evo 8. Genuine Mitsubishi part number MN143463, this thermostat is specifically designed for the 2003–2005 Mitsubishi Lancer Evolution VIII equipped with the turbocharged 2.0L 4G63 engine. It is an excellent OEM replacement when servicing the cooling system, replacing an aging thermostat, restoring an Evo 8 to factory specification, or rebuilding a 4G63 engine. Mitsubishi’s official parts catalog identifies MN143463 as a genuine thermostat kit for the turbocharged Lancer application.

The thermostat is an important part of the engine cooling system because it regulates coolant flow as the engine reaches operating temperature. A properly functioning thermostat helps the engine warm up correctly and then allows coolant to circulate through the radiator as temperature increases. For an enthusiast maintaining an Evo 8, using the correct OEM thermostat helps preserve the original cooling-system configuration without introducing an aftermarket temperature specification that may differ from the factory setup.

Mitsubishi OEM Thermostat for Evo 8 — MN143463

The Mitsubishi OEM Thermostat for Evo 8 is designed specifically for the Evolution VIII rather than being a generic thermostat intended for multiple unrelated vehicles. Current Evo-specific parts listings identify MN143463 as the thermostat for 2003–2005 Evolution VIII models, including the applicable Evolution, MR, RS, and related Evo 8 variants.

Firstly, the genuine Mitsubishi design provides an application-specific replacement for the factory Evo 8 cooling system. Secondly, using the correct OEM component can simplify maintenance when restoring an original 4G63 cooling-system configuration. Thirdly, replacing an old thermostat during preventative maintenance or major engine service can help ensure that the cooling system contains fresh, correctly specified hardware.

Product Features and Specifications

• Product: Engine Thermostat
• Brand: Mitsubishi Genuine OEM
• OEM Part Number: MN143463
• Diagram Number: 10110
• Engine: 2.0L turbocharged 4G63
• Vehicle: Mitsubishi Lancer Evolution VIII
• Model Years: 2003–2005
• Application: Engine cooling system
• Part Type: Thermostat / Thermostat Kit
• Condition: New genuine OEM replacement
• Fitment: Vehicle-specific
• Primary Application: Evo 8

Mitsubishi parts catalogs list MN143463 as a thermostat kit, while Evo-specific suppliers identify it as the factory replacement thermostat for 2003–2005 Evolution VIII models.

4G63 Cooling System and Thermostat Function

The 4G63 turbocharged engine in the Mitsubishi Evolution VIII relies on a properly functioning cooling system to manage engine temperature during normal driving and under increased engine load. The thermostat forms part of that system by controlling coolant circulation according to engine temperature.

When the engine is cold, the thermostat helps regulate coolant flow so the engine can reach its intended operating temperature. As the engine warms, the thermostat opens to allow greater coolant circulation through the cooling system. This process is an important part of normal temperature management.

A thermostat should therefore not be treated as an insignificant maintenance item. An aging or malfunctioning thermostat can affect coolant circulation and engine temperature behavior. Replacing an old unit with the correct Mitsubishi OEM Thermostat for Evo 8 can be a sensible step during cooling-system maintenance, especially when the vehicle is already undergoing related engine work.

Ideal for Evo 8 Maintenance and Restoration

The Evolution VIII is now a highly sought-after performance platform, and many surviving examples are undergoing restoration, preventative maintenance, and 4G63 engine refurbishment. During these projects, replacing older cooling-system components can help bring the engine closer to its original configuration.

The MN143463 thermostat is particularly useful for owners who want to retain genuine Mitsubishi components rather than switching to a racing or low-temperature aftermarket thermostat. It is also suitable for professional workshops performing routine cooling-system service on an Evo 8.

If you are replacing the water pump, thermostat housing, cooling hoses, or other related components, inspecting the thermostat at the same time can make sense because these parts work together as part of the engine’s cooling system.

Genuine OEM Fit and Factory Specification

One of the main advantages of genuine Mitsubishi hardware is application-specific design. Instead of selecting a universal thermostat based only on physical dimensions, the MN143463 is cataloged specifically for the Evolution VIII application.

This is particularly important because Mitsubishi changed the cooling-system arrangement between Evolution generations. Evo-specific parts references distinguish the Evo 8 thermostat MN143463 from the MD363571 thermostat used on the 2006 Evo 9 and other Evolution applications.

For this reason, Evo owners should verify their model year and exact cooling-system configuration before ordering. The fact that a thermostat fits another 4G63-powered Evolution does not automatically mean it is the correct replacement for an Evo 8.

Buy Mitsubishi Evo 8 OEM Thermostat Online

If you are searching for genuine Mitsubishi Evo parts for a 2003–2005 Evolution VIII, the Mitsubishi OEM Thermostat MN143463 is a practical choice for cooling-system maintenance and OEM restoration. You can shop online and order genuine Mitsubishi components from evomotorparts.com, subject to availability.

Mitsubishi Evolution parts are sourced by enthusiasts around the world, including customers in North America, Europe, Australia, Japan, and other markets where the Evo platform remains popular. Using the exact OEM part number is especially useful when ordering internationally because it helps identify the intended component without relying solely on vehicle descriptions.

For workshops and private owners, MN143463 is suitable for routine thermostat replacement, preventative maintenance, cooling-system refurbishment, and 4G63 engine rebuilds where maintaining the original Evo 8 specification is important.

Before you buy, confirm that your vehicle is a 2003–2005 Mitsubishi Lancer Evolution VIII and that the existing cooling-system configuration corresponds with the MN143463 application.

Mitsubishi OEM Thermostat for Evo 8 vs. Evo 9

It is important not to assume that all CT9A Evolution models use the same thermostat. Evo-specific parts information identifies MN143463 for the 2003–2005 Evolution VIII, while the 2006 Evolution IX uses MD363571.

This distinction matters when shopping for Mitsubishi Evo cooling-system parts. If you own an Evo 9, check the correct year and thermostat part number before placing an order rather than assuming the Evo 8 MN143463 will be the correct component.

Likewise, if you have an Evo 8 with a replacement engine, modified water pipe, or other cooling-system changes, verify the actual configuration before installation.

Frequently Asked Questions

What is the OEM thermostat part number for the Evo 8?

The genuine Mitsubishi OEM thermostat for the 2003–2005 Evolution VIII is MN143463. Mitsubishi catalogs identify it as a thermostat kit under diagram number 10110.

What Evo models use MN143463?

MN143463 is specifically documented for the 2003–2005 Mitsubishi Lancer Evolution VIII. Evo-specific suppliers identify it as an Evo 8-only thermostat.

What engine does the MN143463 thermostat fit?

It is designed for the 2.0L turbocharged 4G63 engine used in the applicable Mitsubishi Lancer Evolution VIII models.

Does MN143463 fit the Evo 9?

The 2006 Evolution IX uses a different thermostat, MD363571, according to Evo-specific parts references. Therefore, MN143463 should not be assumed to fit a 2006 Evo 9 without confirming the vehicle’s exact configuration.

Is MN143463 a genuine Mitsubishi part?

Yes. MN143463 is identified by Mitsubishi’s official parts store as a Mitsubishi thermostat, and OEM parts retailers list it as a genuine Mitsubishi component.

What does the thermostat do on an Evo 8?

The thermostat regulates coolant flow as the engine warms up and reaches operating temperature. It is an important component of the 4G63 engine’s cooling system.

Is the thermostat suitable for an Evo 8 engine rebuild?

Yes. MN143463 is suitable for an applicable 2003–2005 Evo 8 4G63 engine rebuild or cooling-system refurbishment, provided the engine retains the correct Evo 8 cooling-system configuration.

Should I replace the thermostat when replacing the water pump?

It can be practical to inspect or replace the thermostat during major cooling-system service, particularly when the water pump and related components are already being removed. The appropriate replacement should always be selected according to the vehicle’s exact application.

Where can I buy the Mitsubishi Evo 8 MN143463 thermostat?

You can shop and order the Mitsubishi OEM Thermostat for Evo 8 — MN143463 through evomotorparts.com, subject to availability. For a factory-focused 4G63 cooling-system service, choose the correct genuine Mitsubishi thermostat and shop the Mitsubishi OEM Thermostat for Evo 8 — MN143463 from evomotorparts.com to maintain the original cooling-system specification of your Evolution VIII.

Buy Mitsubishi OEM Thermostat for Evo 8 online at Evomotorparts, Genuine MN143463 for 2003–2005 Evo 8 4G63 engines and factory cooling-system maintenance.