CF150NK Water Cooled Piston CF150-3A

CF150NK Piston Assembly

Fits CF150-A / 157FMI-2A / 157MJ-2A / 157MJ-3 Engines

Brand new replacement piston, includes piston, piston pin, and circlips as a complete set

This product is a brand new OEM-spec replacement piston, specifically designed for CF150NK models equipped with CF150-A, 157FMI-2A, 157MJ-2A, and 157MJ-3 engines. The piston assembly includes the following components:

Specifications:

• Piston Diameter: 57mm
• Piston Pin: 15 × 41.7mm

Manufactured from high-quality alloy materials, strictly following original factory dimensions and tolerances, ensuring perfect fit with the cylinder and restoring engine compression ratio and power output.

• Complete Kit: Includes piston, piston pin, and circlips — everything needed in one package.
• Precise Dimensions: 57mm piston diameter and 15×41.7mm piston pin, manufactured to exact OEM specifications.
• Quality Materials: Piston made from high-strength aluminum alloy, piston pin surface-hardened for durability.
• Restores Performance: Replacing a worn piston effectively resolves issues like oil burning, power loss, and low compression.
• Direct Replacement: Designed to original specifications, installs without any modifications.

✅ Common Symptoms of Piston Wear: Engine burning oil (blue smoke from exhaust), noticeable power loss, low cylinder compression, engine knocking noise, heavy carbon deposits on spark plugs. If you encounter these issues, inspect and consider replacing the piston assembly.

⚠️ Installation Recommendation: Piston replacement is a core engine repair task; professional installation by an experienced technician is highly recommended. Thoroughly clean the cylinder and piston ring grooves before installation. Pay attention to piston orientation (usually an arrow on the piston crown pointing toward the exhaust side). Ensure circlips are fully seated in their grooves. New pistons require a break-in period; avoid high-load operation during initial use.