50cc Cylinder Head Gasket QMB139


Stock 39mm Cylinder Head Gasket for 50cc 4-stroke QMB139 engines.

Inner Diameter: 39mm


34 in stock


Stock 39mm Cylinder Head Gasket for 50cc 4-Stroke QMB139 Engines

Product Description:

This stock cylinder head gasket is engineered specifically for 50cc 4-stroke QMB139 engines, ensuring precise fitment and optimal performance. With an inner diameter of 39mm, this gasket provides a reliable seal between the cylinder head and engine block, effectively containing combustion gases and preventing leaks.

Key Features:

  • Exact Fit: Designed to OEM specifications for 50cc 4-stroke QMB139 engines, ensuring compatibility and seamless installation.
  • 39mm Inner Diameter: Perfectly matches the cylinder bore diameter for a secure seal, maintaining proper compression and combustion.
  • High-Quality Material: Constructed from durable materials to withstand the high temperatures and pressures of engine operation, ensuring long-lasting performance.
  • Essential Component: Critical for maintaining engine integrity by preventing leakage of combustion gases and coolant.


  • Inner Diameter: 39mm
  • Compatibility: 50cc 4-stroke QMB139 engines
  • Material: High-quality gasket material


  • Reliable Sealing: Ensures a tight seal between the cylinder head and engine block, preventing leaks and maintaining optimal compression.
  • Optimal Performance: Supports efficient combustion and engine operation by containing combustion gases within the cylinder.
  • Easy Installation: Designed for straightforward installation, allowing for hassle-free replacement during maintenance or repairs.
  • Longevity: Resistant to heat and pressure, this gasket provides long-lasting durability and performance, reducing the need for frequent replacements.

Installation Instructions:

  1. Preparation: Ensure the engine is cool and disconnect the battery to prevent electrical hazards.
  2. Remove Old Gasket: Carefully remove the old cylinder head gasket, ensuring all residues are cleaned from the mating surfaces.
  3. Install New Gasket: Place the new 39mm cylinder head gasket onto the engine block, aligning it with the cylinder bore.
  4. Reattach Cylinder Head: Carefully reinstall the cylinder head, ensuring proper alignment and torque specifications are followed.
  5. Test Operation: Start the engine and monitor for any signs of leakage or abnormal operation. Check for proper compression and performance.

Package Includes:

  • 1 x Stock 39mm Cylinder Head Gasket for 50cc 4-Stroke QMB139 Engines

Ensure the reliability and performance of your 50cc 4-stroke QMB139 engine with this high-quality cylinder head gasket. Designed to OEM standards, it provides a secure seal between the cylinder head and engine block, essential for maintaining optimal engine function.

This description provides detailed information about the stock 39mm cylinder head gasket for 50cc 4-stroke QMB139 engines, covering its features, specifications, benefits, and installation instructions to assist potential buyers in making informed decisions.


Additional information

Weight .3 lbs
Dimensions 6 × 4 × 2 in


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