OEM Engine Piston & Wrist Pin Set

Restore factory compression and smooth power with a precision piston assembly designed to match Toyota engine specs. Made from heat-treated aluminum alloy and a low-friction skirt coating, it maintains tight clearances, reduces noise, and controls oil use for long service life.

Why this part is needed ️

Worn pistons and pins cause blow-by, piston slap, and oil burning. Replacing them brings back sealing, quiet cold starts, stable idle, and better fuel economy. Perfect during a rebuild, after cylinder wear, or when tackling oil consumption and loss of power.

How it works ⚙️

The crown withstands combustion pressure, the skirt guides the stroke, and the full-floating pin links the piston to the connecting rod. A ring pack (compression and oil control) seals gases and meters oil on the cylinder wall. Accurate machining keeps heat expansion controlled and protects the bore.

What happens if it’s damaged

Expect low compression, blue smoke, high oil use, misfires under load, knocking, and scored cylinders. Continued driving risks catalytic converter overheating and, on turbo engines, bearing damage.

Tech notes

Measure bore, hone to spec, set ring end gaps, and install pin clips correctly. Arrow on crown faces the front. Use assembly lube and follow gentle break-in.

Compatibility

• 4Runner
• Granvia/Grand Hiace
• Hiace/Regiusace
• Hilux
• Hilux Surf
• Hilux/4Runner (4Wd)
• Land Cruiser 90
• Land Cruiser Prado
• Regius/Touring Hiace