Valve Seat Insert 12300236 (Genuine DEUTZ Part)

1. Basic Information

• Part Number: 12300236
• Name: Exhaust Valve Seat Insert
• Brand: DEUTZ
• Applicable Models:
  
  
  DEUTZ MWM TBG/TCG 2020/2032 series gas engines
  
  
  DEUTZ TCG 620 V12/V16/V20 series
  
  
  Partial BF6M1013, BF4M2012 industrial, power generation and marine engines
• Type: Exhaust valve seat insert (high temperature resistant & high hardness)

2. Material & Manufacturing Process

• Material: High-temperature cobalt-based alloy (Stellite 6) / High-chromium heat-resistant steel, temperature resistance: 750–950℃.
• Process: Powder metallurgy / Precision casting plus heat treatment. Hardness: HRC 45–55. Features excellent wear resistance, impact resistance and high-temperature creep resistance.
• Seat Taper Angle: 45° (standard), compatible with valve taper surfaces of the same series.

3. Key Dimensions (Typical values, subject to minor adjustments by batch)

• Outer Diameter: Approx. 48–52 mm
• Inner Diameter: Approx. 38–42 mm
• Thickness: Approx. 8–12 mm
• Interference Fit for Installation: 0.08–0.12 mm (press-fit into cylinder head)

4. Functions & Features

• Combustion chamber sealing: Fits closely with valve taper surface to prevent leakage of compression and combustion pressure.
• High temperature and impact resistance: Withstands frequent valve seating impact and high exhaust temperature to avoid ablation and deformation.
• Cylinder head protection: Prevents direct wear of cast iron or aluminum alloy cylinder heads and extends service life.
• Optimized for gas engines: Resists corrosion and carbon deposition, specially designed for natural gas and biogas fuel applications.

5. Replacement & Compatibility

• Genuine Alternative Part No.: 12301787 (exhaust valve seat insert for the same series)
• Aftermarket Compatibility: Dimensions (outer diameter, inner diameter), taper angle and material must be matched. Genuine parts or products from brands like IZUMI, CTP are recommended.

6. Installation Instructions

1. Thoroughly clean the seat bore of cylinder head and remove burrs. Strictly control the interference fit within 0.08–0.12 mm.
2. Press in the insert by cryogenic cooling (-196℃) or heating the cylinder head. Forbid violent striking.
3. Grind the taper surface after installation to ensure uniform and continuous contact band.
4. Replace the matching valves, valve guides and oil seals together to guarantee sealing performance and service durability.