Mahle Pistons PowerPak 1997-2001 Honda Prelude - Part # H22220425I07

Forged piston for performance applications; Fully-machined crown; Grafal anti-Friction coating on skirts*; Phosphate-coated to reduce micro-welding and pin galling**; Pin bores binished on CNC boring equipment; Deburred; High strength, light weight steel pins; Race proven round wire locks; Low drag ring pak; Light weight slipper kirt forgings; 4032 Aluminum Alloy | * MAHLE's GRAFAL skirt coating reduces drag, scuffing, friction and cylinder bore wear; reduces piston noise.; ** Phosphate coating provides the grey appearance to the MAHLE piston. This dry lubricant coating (not to be confused with a thermal film coating) provides a lubricant film in the pin bores and ring grooves until the oiling system of the engine reaches operating pressure; particularly useful during the initial start-up or break-in of engines to protect against galling and microwelding. The piston crown is still machineable. | Part Number: H22220425I07; Application: HONDA H22 GOLD SERIES 2.2L- FOR USE IN FACTORY FIBER REINFORCED MATRIX CYLINDERS ONLY; Bore: 87.00mm; Stroke: 90.00mm; Rod: 143.0mm; Pin Diameter: 22mm; Compression Height: 31.0mm; Crown Volume: -7cc; Weight (Grams): 328; Compression Ratio (54cc): 9.0:1