Sealed Power WH820CP Engine Piston

Sealed Power WH820CP Engine Piston

Sealed Power WH820CP is a standard-size hypereutectic engine piston built for Ford and Mercury applications that call for a recessed-head design and precise compression geometry. It features a DUROSHIELD skirt coating, a 3-ring layout, and OE-style dimensions for service work on select Mustang, Windstar, Thunderbird, and Cougar engines.

Key Features

• Part number WH820CP from Sealed Power
• Standard-size piston with a 3.8110 in. bore / 96.8000 mm bore
• Hypereutectic alloy construction for dimensional stability
• Recessed head design: 0.100 in. deep x 2.110 in. diameter
• DUROSHIELD skirt coated piston for reduced skirt wear
• Compression distance: 1.440 in.
• Pin diameter: 0.9056 in. / 23.002 mm with 0.03 in. pin offset
• Ring groove widths: 1.50 mm, 1.50 mm, and 3.00 mm

Detailed Description

WH820CP is engineered as a standard replacement piston for select Ford Mustang, Ford Windstar, Ford Thunderbird, and Mercury Cougar engines from the 1996-2004 model years. The hypereutectic material helps maintain piston shape under heat, while the recessed head profile and specified compression distance support the original engine geometry. Sealed Power uses modern manufacturing controls and materials to produce components that meet the demands of current engine service requirements. This part cross-references Ford OE numbers such as F6ZZ6108A and XR3Z6108AA for the same application.

What This Piston Helps Address

• Restores worn or damaged piston surfaces during engine rebuilds
• Addresses compression loss caused by piston wear or scoring
• Supports repair of oil consumption related to piston and ring wear
• Helps correct noise or slap associated with excessive piston clearance
• Provides a replacement for engines requiring the original recessed-head piston design

Installation Notes and Tips

Verify bore size, compression distance, pin diameter, and ring groove widths before installation. Minimum clearance is listed on the piston fitting information on the carton label, so confirm measurements during machine work and assembly. Compatible With 1996-2004 Ford Mustang, 1996-2003 Ford Windstar, 1996-1997 Ford Thunderbird, and 1996-1997 Mercury Cougar. Use the engine’s service specifications to confirm ring fitment and piston-to-wall clearance before final assembly.

Quality Assurance

Sealed Power parts are manufactured with leading-edge materials and ISO- and QS-certified production processes to support consistent engine service quality. WH820CP is built to the stated dimensions and material specification for accurate fitment in the listed Ford and Mercury applications.