Cylinder Head for Nissan K21 & K25 Gasoline Engine CHI52N Forklift 91H2000310

Cylinder Head for Nissan K21 & K25 Gasoline Engine

This cylinder head is a direct-fit replacement for Nissan K21 and K25 gasoline engines, sealing the combustion chamber and carrying the valvetrain so the engine can build compression and run properly again.

Overview

This cylinder head is built to replace a cracked, warped, or burnt-valve head on Nissan K21 and K25 gasoline engines used in forklifts and industrial equipment. It restores proper compression and valve sealing so the engine idles smoothly and pulls under load. A solid choice for rebuilders and maintenance shops servicing Nissan-powered forklifts.

Built For Performance

• Cast and machined to match the K21 and K25 combustion chamber layout
• Precision-machined deck surface for a clean head gasket seal
• Valve guide bores sized for standard K21 and K25 valvetrain components
• Integrated water jacket passages for consistent coolant flow
• Designed as a direct replacement for the original head casting

Fits These Machines

• for Nissan K21 gasoline engine applications
• for Nissan K25 gasoline engine applications
• for forklifts running K21 or K25 gasoline power units

On-The-Job Use

• Engine rebuilds after overheating or head gasket failure
• Repairing burnt or leaking valves on high-hour forklift engines
• Restoring compression on K21 and K25 powered lift trucks
• Routine top-end service in fleet maintenance shops

Specs At A Glance

Good To Know

Q: Does this head come assembled with valves and springs? A: This listing covers the cylinder head casting itself. Reuse or replace valvetrain components according to the condition of your original parts.

Q: Should the head be resurfaced before installation? A: Check deck flatness with a straight edge before fitting, and have it machined if it falls outside the engine manufacturer's tolerance.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.