OEM Engine Piston Assembly with Wrist Pin for Nissan Workhorses

This precision piston set is built for demanding Nissan engines, delivering tight compression, clean combustion, and long service life. Crafted from heat-treated aluminum alloy with low-friction skirt coating, it keeps the cylinder sealed, power strong, and fuel use efficient. Perfect choice for a durable overhaul or a performance-focused refresh.

Why it’s needed

The piston is the heart of the short block. It seals the combustion chamber, transfers explosion force to the crank, controls oil on the walls, and manages heat. A correct-size, weight-matched piston restores lost power, smooth idle, and stable emissions.

How it works ⚙️

Rings seal the chamber and scrape excess oil as the piston travels up and down. The wrist (gudgeon) pin links the piston to the connecting rod and floats in a lubricated bushing, secured by circlips. Heat moves through the crown to the walls and oil jets. Balanced mass reduces vibration and protects bearings.

If it’s worn or broken

Expect hard start, low compression, blue smoke, knocking, piston slap, metal shavings, scored bores, even seizure or a holed crown. Ignoring it can damage the head, turbo, and catalyst. During replacement, hone the cylinder, set ring end gaps, clean ring lands, lube the pin, align the crown mark to front, and use OEM torque specs.

Compatibility

• Truck
• Np300
• Urvan
• Safari
• Patrol