PISTON ASSY COMPLETE CAST IRON 6/1 or 8/1 114.3MM 3+2 STD (VEH15158)

This cast iron piston assembly is a high-durability internal engine component engineered specifically for classic, slow-speed stationary diesel engines like the Lister CS 6/1, 8/1, and equivalent Listeroid single-cylinder power platforms. Machined from premium-grade cast iron, it provides the massive thermal mass, dimensional stability, and raw durability required to withstand decades of continuous agricultural or industrial service.

Key Design Features
a. Premium Cast Iron Construction: Unlike lightweight modern aluminum pistons, this heavy-weight cast iron body matches the thermal expansion rate of the engine's cylinder sleeve. This helps prevent piston slapping or seizing during continuous, heavy-load operations.
b. Traditional 3+2 Ring Layout: Engineered with a specialized 5-ring configuration to ensure high-pressure combustion sealing and advanced oil management:
- 3 Top Compression Grooves: Positioned above the wrist pin to hold thick, durable compression rings that maintain tight cylinder compression.
- 2 Oil Scraper Grooves: Located split-style—one directly below the compression rings and one located low on the bottom skirt—featuring integrated oil return drain holes to scrape away excess oil and prevent oil-burning.
c. Precision Machined Pin Bore: The heavy wrist pin (gudgeon pin) housing features dual internal circlip retention grooves to lock the pin safely away from the cylinder walls.

Technical Specifications
* Bore Diameter: Standard (STD) 114.3mm (4.5 inches)
* Configuration: 3 Compression Rings + 2 Oil Scraper Rings
* Engine Speed Design: Low-RPM, long-stroke heavy stationary diesel
* Compatibility: Lister Cold Start (CS) 6HP and 8HP single-cylinder variants, plus multi-cylinder Listeroid clones (10/2, 12/2)
* Part Cross-Reference: Equivalent to OEM Lister Part Number 574-10340