Nissan Cylinder Head K25 assembly 171340
171340This Nissan K25 Cylinder Head Assembly 171340 suits forklifts and industrial engines that start showing signs of rough idle, overheating, or uneven compression. It comes ready to fit, so workshops can move straight to installation without chasing extra parts. The casting sits clean, the ports line up well, and the head holds compression the way the K25 block expects. It works for rebuild jobs, rental fleets, and routine replacement where the old head cracks or warps from daily load.
The Nissan K25 Cylinder Head Assembly 171340 fits the common K25 engine used in forklifts and material-handling equipment. Many shops come across these engines with worn seats or a head that starts leaking after long hours of heat cycles. This assembly sits in place without fuss, and the mounting points line up the way technicians prefer—nothing tight, nothing loose.
Most rebuilders use this head when the original one develops cracks around the water jackets. It also helps when an engine struggles with compression on one or two cylinders. A new head usually brings the motor back to a smoother idle and cleaner exhaust. Another thing worth noting is the way the ports match the standard K25 intake and exhaust layout, so you don’t have to modify anything during the job.
Why it makes sense for workshops and fleet owners
- Fits Nissan K25 forklift engines used in daily loadwork
- Supports clean combustion by holding compression evenly
- Helps resolve overheating damage and valve seat wear
- Works well for rental fleets that change heads during routine overhauls
- Saves time since technicians can seat the gasket, torque the bolts, and move straight to timing
In most cases, replacing the old head is simpler than repairing cracks or dealing with repeated gasket failures. This assembly gives you a solid starting point so the engine runs the way it should under constant lifting work.
At Acme Impex, each unit goes through casting and machining checks before packing. Technicians get a head that sits flat, holds torque, and supports a stable rebuild. If your K25 engine is ready for a top-end refresh, this assembly is a practical and straightforward choice.

