Sealed Power WH831CP Engine Piston

Sealed Power WH831CP Engine Piston

Sealed Power WH831CP is a standard-size hypereutectic engine piston built for Ford and Mercury applications that require a 3.5512-inch bore and a 1.210-inch compression distance. The recessed head design, DUROSHIELD skirt coating, and free-floating pin support consistent fitment for rebuild work on select Ford E-150, F-150, Expedition, Explorer, and Mercury Mountaineer engines.

Key Features

• Standard-size piston with a 3.5512 in. bore / 90.200 mm bore
• Hypereutectic piston material for modern engine rebuild requirements
• Recessed head design: .140 in. deep x 2.700 in. diameter
• DUROSHIELD skirt-coated piston for reduced skirt wear
• Free-floating pin design with 0.866 in. pin diameter
• Pin offset: 0.04 in. / 1.016 mm
• Three-ring groove layout: 1.50 mm, 1.50 mm, and 3.00 mm
• Interchanges with 2243417 and F7P6108AA

Detailed Description

WH831CP is an engine piston from Sealed Power, a brand known for using advanced materials and ISO- and QS-certified manufacturing processes. This piston is engineered as a standard-size replacement for select Ford and Mercury engines, including applications in the Ford E-150, Ford F-150, Ford Expedition, Ford Explorer, and Mercury Mountaineer. The hypereutectic construction and coated skirt help support stable operation in rebuilds where correct bore size, compression distance, and ring groove dimensions are critical. If you are searching for a Sealed Power WH831CP piston for a Ford F-150 or a replacement piston for a Mercury Mountaineer, this part is built around those exact dimensional requirements.

This part cross-references 2243417 and F7P6108AA for the same application.

What This Piston Helps Address

• Worn or damaged piston surfaces during engine overhaul
• Incorrect compression geometry caused by a mismatched replacement piston
• Skirt wear in high-mileage Ford and Mercury engines
• Ring seal issues when the original piston dimensions are no longer serviceable
• Rebuild needs for engines requiring a standard-size, recessed-head piston

Installation Notes and Tips

Verify bore size, compression distance, pin diameter, and ring groove dimensions before assembly. Minimum clearance is listed on the piston fitting information on the carton label, so confirm that specification during engine measurement and machine work. This piston is listed for select 1997-2004 Ford and Mercury applications, including 2003-2004 Ford E-150, 1997-2004 Ford F-150, and 2002-2004 Mercury Mountaineer. For best results, match the piston to the engine’s exact application and inspect cylinder condition, ring fit, and pin fit during installation.

Quality Assurance

Sealed Power parts are manufactured with modern materials and controlled production standards to meet the demands of current engine service and rebuild work.