Sealed Power WH868CP Engine Piston

Sealed Power WH868CP Engine Piston

Sealed Power WH868CP is a standard-size engine piston built for select GM performance applications that require a 3.897-inch bore, flat top design, and hypereutectic alloy construction. It is engineered with a DUROSHIELD skirt coating to help reduce skirt wear and maintain consistent piston-to-cylinder contact in demanding street and performance use.

Key Features

• Part number WH868CP from Sealed Power
• Standard-size piston with a 3.897-inch bore
• Flat head design with hypereutectic alloy material
• DUROSHIELD skirt coated piston for added wear resistance
• 1.328-inch compression distance
• 0.945-inch pin diameter with 0.03-inch pin offset
• 3-ring groove layout with 1.50 mm, 1.50 mm, and 3.00 mm widths
• Fits select 1997-2004 Chevrolet Corvette, 1998-2002 Chevrolet Camaro, 1998-2002 Pontiac Firebird, and 2004 Pontiac GTO applications

Detailed Description

WH868CP is a Sealed Power engine piston designed around precise dimensional control and modern materials. The hypereutectic alloy construction supports stable operation under heat and load, while the flat crown profile and 1.328-inch compression distance match the specified engine configuration. This piston uses a P-type pin, a 0.945-inch pin diameter, and a 0.03-inch pin offset for the listed applications. Sealed Power focuses on engineered components manufactured under ISO and QS certified processes, and WH868CP reflects that approach with a coated skirt and standard-size dimensions for direct engine rebuild use. This part number WH868CP is listed for 1997-2004 Chevrolet Corvette, 1998-2002 Chevrolet Camaro, 1998-2002 Pontiac Firebird, and 2004 Pontiac GTO fitments.

This part cross-references 2242991 for the same application.

What It Is Used For

• Replacing a worn or damaged piston during an engine rebuild
• Restoring correct compression geometry in the specified GM engine applications
• Addressing skirt wear in engines that need a coated piston surface
• Correcting piston-related noise, scoring, or clearance issues
• Supporting repair work on Chevrolet Corvette, Chevrolet Camaro, Pontiac Firebird, and Pontiac GTO engines

Installation Notes and Tips

Verify bore size, compression distance, pin diameter, and ring groove widths before installation. WH868CP is a standard-size single piston, so confirm the engine’s cylinder condition and matching component specifications during teardown. Clean the cylinder bore thoroughly, measure minimum clearance, and follow the engine builder’s recommended ring and clearance procedures for the listed fitments.

Quality Assurance

Sealed Power manufactures this piston using leading-edge materials and ISO and QS certified production processes to meet the demands of modern engines. The DUROSHIELD skirt coating and hypereutectic alloy construction are selected to support consistent performance in the specified Chevrolet and Pontiac applications.