S4S 94mm STD Diesel Engine Piston Canter verhaul Replacement Part

S4S 94mm STD Diesel Engine Piston 32A17-03100 for  Engine Overhaul Replacement Part

This piston 32A17-03100 is designed for S4S diesel engine, widely used as core replacement spare part for overhaul of forklifts, mini excavators and industrial power units. It follows OEM tolerance standard and fits S4S engine perfectly. As the critical pressure-bearing component inside combustion chamber, piston endures explosion pressure, peak heat and reciprocating friction. This piston is optimized in five dimensions: raw material, casting, machining, surface treatment and quality inspection to suit continuous heavy-duty work at construction sites and warehouses.

Feature 1: High-silicon aluminum alloy, stable heat resistance & low deformation Refined eutectic high-silicon aluminum blank is adopted with evenly distributed silicon grains and low thermal expansion rate. When forklift runs under continuous full load, thermal expansion is well controlled. It resists out-of-round deformation and cylinder seizure, ideal for non-stop operation in warehouse and construction site.

Feature 2: Precision bowl combustion chamber for stable combustion efficiency Integrally cast bowl chamber copies OEM contour precisely. It guarantees good fuel atomization and mixing, stable compression pressure, consistent power output, and helps reduce black smoke and excessive fuel consumption after overhaul.

Feature 3: Full CNC machining with tight tolerance for ring grooves and pin bore Ring grooves, pin bore and piston skirt are CNC machined. Flatness of ring grooves and concentricity of pin holes are strictly controlled. Well-fitted piston rings improve sealing performance, prevent gas blow-by and oil consumption, deliver stable idle and quick startup.

Feature 4: Skirt graphite coating to protect break-in period Dry graphite lubricant coating is applied on piston skirt. It forms a solid lubricating film during cold start and early break-in before oil film fully builds up, preventing metal dry contact and cylinder scoring. It improves first-time overhaul success rate for mechanics.

Feature 5: Penetrant inspection & dimension sampling test for traceable quality All castings go through penetrant test to detect hidden sand holes, pores and cracks. Finished pistons are sampled for dimension check. Low failure rate makes it suitable for bulk export stock and repair shop inventory.

We supply single pistons separately or full overhaul kits including wrist pin, circlips and piston rings. Ready stock available for regular S4S engine maintenance.