Product Introduction

This piston kit consists of piston, piston rings, piston pin and cylinder liner – the four key components of an engine combustion chamber. Manufactured to OE specification, it is suitable for diesel and gasoline engine overhaul and maintenance. Precision-machined, wear‑resistant and heat‑resistant, our kit improves engine power, reduces fuel and oil consumption.

Specification & Application

Item	Description
Applicable engine type	Diesel / Gasoline engine
Compatible brands	Cummins, Weichai, Yuchai, Xichai, Deutz, Isuzu, etc. (OEM & custom available)
Cylinder configuration	4-cylinder / 6-cylinder kit (supplied by engine set)
Standard size	Bore diameter: 80mm – 150mm
Oversize	+0.00mm / +0.25mm / +0.50mm / +0.75mm / +1.00mm (customizable)

Note: Specific specification will be matched based on engine model or OEM part number.

Component Material

Component	Material	Features
Piston	Eutectic Al‑Si alloy / Forged aluminium	High strength, low thermal expansion, thermal fatigue resistant
Piston ring	Ductile iron / Alloy cast iron + PVD coating	Excellent wear resistance, oil control & sealing
Piston pin	Low‑carbon alloy steel (20Cr, 20CrMo)	Case‑hardened, tough core
Cylinder liner	Boron cast iron / High‑phosphorus alloy cast iron	High hardness, anti‑scuffing, good thermal conductivity

Key Parameters

Parameter	Value Range
Piston hardness	HB 100 – 130
Ring end gap	0.25 – 0.50 mm (depending on bore)
Ring side clearance	0.03 – 0.09 mm
Piston pin bore	24mm – 50mm (H7 or custom)
Liner hardness	HB 200 – 240
Liner surface finish	Ra ≤ 0.32 μm

Note: Above are typical values; tolerances vary by engine. Detailed drawing available.

Packaging

Packaging Level	Type	Description
Inner packaging	Rust‑proof oil paper + individual poly bag	Anti‑scratch, anti‑oxidation
Intermediate packaging	Foam insert + color/neutral carton	Each component fixed, easy identification
Outer packaging	Export corrugated carton + stretch film	5‑ply / 7‑ply carton, strong stacking
Carton marking	Model, qty, G.W., MADE IN CHINA	Custom label as per buyer's request

Example:Standard 4-cyl piston kit: 1 set/color box, 10 sets/master carton (mixed orders accepted).

Export Information

Item	Details
HS Code	8409.99 – suitable for most countries
Port of loading	Shanghai / Ningbo / Guangzhou / Qingdao
Package size (4-cyl kit)	Approx. 38×28×18 cm per kit
Gross weight (4-cyl kit)	Approx. 6 – 12 kg depending on bore size
MOQ	20 sets (mixed models allowed)
Delivery time	Stock: 7 days; custom: 25–35 days
Payment terms	T/T, L/C, Western Union, Alipay international
Export certification	Third‑party inspection available; CO, FORM E, chamber of commerce cert. upon request