Sealed Power WH857CP Engine Piston

Sealed Power WH857CP Engine Piston

Sealed Power WH857CP is a standard-size engine piston built for GM truck and SUV applications that call for a recessed-head, hypereutectic alloy design. It features a DUROSHIELD skirt coating, a 1.325-inch compression distance, and a 0.048-inch deep by 3.340-inch diameter recess for the specified engine setup.

Key Features

• Standard-size engine piston for select Chevrolet, GMC, and Hummer applications
• Hypereutectic alloy construction for modern engine service requirements
• Recessed head design: 0.048 in deep x 3.340 in diameter
• DUROSHIELD skirt coated piston for reduced skirt wear
• 1.325 in compression distance
• Pin diameter: 0.9451 in / 24.006 mm
• Pin offset: 0.03 in / 0.762 mm
• Ring groove widths: 1.50 mm, 1.50 mm, 3.00 mm
• Negative 7.0 cc dome volume

Detailed Description

The Sealed Power WH857CP piston is engineered for engines used in 1999-2003 Chevrolet Silverado 2500, 2001-2003 Chevrolet Silverado 1500 HD, 2001-2003 GMC Sierra 2500 HD, and related GM full-size truck and SUV platforms. It also fits 2003 Chevrolet Express 2500, 2003 GMC Savana 3500, and 2003 Hummer H2 applications listed in the fitment data. Sealed Power uses modern materials and ISO- and QS-certified manufacturing practices to produce components that meet the demands of current engine rebuild work. The WH857CP part number is a direct reference for buyers searching for a Sealed Power WH857CP piston for Chevrolet Silverado 2500, GMC Sierra 1500, or GMC Yukon engine service.

Common Repair Uses

• Restoring compression in a worn cylinder
• Replacing a damaged or scored piston during engine rebuilds
• Correcting piston wear in high-mileage GM truck engines
• Addressing ring seal issues tied to piston or skirt wear
• Supporting rebuild work on Chevrolet Silverado, GMC Sierra, and Yukon engines

Installation Notes and Tips

Verify piston-to-cylinder clearance before assembly and follow the piston fitting information on the carton label. Confirm the recessed-head profile, pin diameter, pin offset, and ring groove widths against the engine specifications before installation. This WH857CP piston is listed as standard size, so matching the cylinder bore and related components is essential for proper engine rebuild results.

Quality Assurance

Sealed Power positions this piston line around controlled manufacturing, modern material selection, and certified production processes. The WH857CP is built to meet the requirements of the listed GM applications and is identified with standard-size specifications for accurate engine service work.