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Valve Seat Insert 12452845 for MWM TCG2020 Gas Engine

5 0 Reviews
Description: Valve seat insert.
MWM part number: 1245 2845,1245-2845,12452845.
Suitable engine model: TCG2020V20,CG170-20.
Price: $ 24.62
  • WY12452845

  • Weyeah

  • 12452845

  • TCG2020

  • 0.088

  • 2-3 weeks

Product Description

The valve seat insert for engines like the MWM TCG2020V20 and CG170-20 is a critical component that ensures proper sealing and durability of the valves within the cylinder head. Here's a detailed description of the valve seat insert suitable for these engine models:

Function and Importance:

  1. Sealing: The valve seat insert provides a precise mating surface for the valve to seal against when closed. This seal is crucial for maintaining compression within the engine cylinders during the combustion process.

  2. Heat Dissipation: It helps dissipate heat from the valve head, which is necessary in high-temperature engine environments to prevent overheating and potential valve damage.

  3. Wear Resistance: Valve seat inserts are typically made from materials like hardened steel, alloyed steel, or other heat-resistant materials. These materials offer excellent wear resistance against the repeated impact and friction from the valve operation.

Characteristics and Specifications:

  • Material: Valve seat inserts are often made from materials such as Stellite, Nimonic, or similar alloys. These materials are chosen for their ability to withstand high temperatures and mechanical stresses without deforming or wearing out prematurely.

  • Design: The design of the valve seat insert ensures proper alignment and fit within the cylinder head, maintaining the correct geometry for optimal valve operation and sealing.

  • Compatibility: It's essential to ensure that the valve seat insert is compatible with the specific engine model (TCG2020V20 or CG170-20) to ensure proper fitment and performance.

Maintenance and Replacement:

  • Inspection: Regular inspection of valve seat inserts is necessary during engine maintenance to check for wear, erosion, or damage. Signs of wear may include uneven sealing surfaces or pitting.

  • Replacement: If wear or damage is observed, valve seat inserts should be replaced according to the manufacturer's recommended intervals or as part of scheduled maintenance to prevent potential engine performance issues.


The valve seat insert is a critical component in engines like the MWM TCG2020V20 and CG170-20, ensuring proper valve sealing and longevity. Choosing high-quality inserts and maintaining them properly through regular inspection and replacement when necessary is essential for maintaining engine efficiency and reliability. For specific technical details, part numbers, or further assistance regarding valve seat inserts for these engine models, consulting the engine's operation and maintenance manual or contacting an authorized MWM service provider would provide precise information tailored to your engine's requirements.


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