WH 125cc Cylinder Block

WH 125cc Cylinder Block

Engine Type: 153QMI

Fits Keeway ARN 125, F-act 125, Matrix 125, RY8 125, RX9 LEONE, and other models equipped with QJ153QMI engine

This is a WH 125cc cylinder block designed for the new 153QMI engine type. The 153QMI is a modified version of the standard GY6 engine (152QMI), featuring optimized design for improved durability and heat dissipation.

• Keeway ARN 125
• Keeway F-act 125
• Keeway Matrix 125
• Keeway RY8 125
• Keeway RX9 LEONE
• Other models equipped with QJ153QMI engine

• Modified Design: The 153QMI is an upgraded version of the standard GY6 engine, with an optimized cylinder block structure for better strength and heat dissipation.
• Quality Casting: Made from high-quality cast iron or aluminum alloy material, durable and wear-resistant with excellent heat dissipation.
• Precision Machined: Cylinder bore is precision honed for high surface finish, ensuring proper piston ring sealing.
• OEM Specifications: Manufactured to strict OEM standards with dimensional accuracy identical to original parts for perfect fit.
• Performance Restoration: Replacing a worn cylinder block restores engine compression pressure, improves power output, and reduces oil consumption.

✅ Installation Tip: When replacing the cylinder block, also replace the piston, piston rings, and cylinder head gasket. Clean mating surfaces before installation to ensure they are free of oil and debris. Tighten cylinder head bolts in a diagonal sequence to the specified torque in stages. After installation, check engine operation for any leaks or abnormal noise.

⚠️ Important Note: This product is a WH 125cc cylinder block for 153QMI / QJ153QMI engines. Pistons and cylinder head gaskets from standard GY6 engines (152QMI) may not be compatible. Please verify your engine model before purchasing. It is recommended to replace the piston and piston rings at the same time for optimal fit. Images are for reference only; actual product may vary slightly due to batch differences.