Nissan Cylinder Liners for Light Commercial, Heavy Duty & Industrial | Wholesale

Technical Q&A: Nissan Cylinder Liner Selection

How do I select the right liner for a Nissan Navara D40 versus a UD Truck?

Application: The Navara D40 uses a “dry” liner (YD25) that relies on direct contact with the block for cooling. A UD Truck uses a “wet” liner (FE6) that is directly immersed in coolant. Solution: You must match the liner type to the engine’s original design. Our dry liners are optimized for heat transfer via press-fit, while our wet liners have anti-cavitation coatings for direct coolant exposure.

What are the signs of a worn cylinder liner in a K25 forklift engine?

Symptom: Excessive blue smoke from the exhaust, high oil consumption, and a “chuffing” sound from the crankcase breather. Diagnosis: Constant low-speed operation in forklifts leads to “glazing,” where the liner wall becomes too smooth to hold oil, causing poor piston ring sealing. Solution: Installing our plateau-honed K25 liners restores the oil-retaining cross-hatch pattern required for industrial engines.

What is the difference between a pre-finished and a semi-finished liner?

Answer: Our “pre-finished” liners are honed to the final standard bore size and are ready for immediate installation with standard piston rings. “Semi-finished” liners have extra material on the inner diameter, requiring a machine shop to bore and hone them to match a specific set of oversized pistons after they are installed in the block.

What are your B2B supply terms for high-volume engine sleeve orders?

We provide tiered wholesale pricing for engine rebuilders, machine shops, and fleet maintenance depots. Liners are individually packaged in rust-proof wrapping and rigid tubes, then crated for secure global freight. We accept T/T and L/C and provide full material certification for all our 11012-series centrifugal castings.