Sealed Power E-1003K Engine Piston Ring Set

Sealed Power E-1003K Engine Piston Ring Set

Sealed Power E-1003K is a standard-size engine piston ring set built for 99.10 mm bores and 3.0 x 2.0 x 2.5 mm ring groove widths. It is listed for Ford F-250 Super Duty and Ford F-350 Super Duty applications from 2011-2021, making it a direct-fit option for select Ford Super Duty engine rebuilds.

This part cross-references MAHLE S42168 for the same application.

Key Features

• Standard-size piston ring set for 99.10 mm bore diameter
• Top ring uses steel with moly face construction
• Second ring uses carbidic cast iron material
• Conformatic oil ring design for controlled oil management
• Key stone top ring face design
• Ring groove widths: 3.0 mm top, 2.0 mm second, 2.5 mm oil
• Fits select Ford F-250 Super Duty and Ford F-350 Super Duty engines
• Sealed Power engineering and ISO/QS-certified manufacturing background

Product Details

The Sealed Power E-1003K piston ring set is engineered for engine service work where bore size, ring width, and ring face design must match the cylinder block precisely. The 99.10 mm outside diameter and standard-size specification make it a fitment-specific choice for rebuilds that require the listed Ford Super Duty applications. The steel moly top ring and carbidic cast iron second ring are selected for wear resistance and sealing performance in modern engine environments. If you are rebuilding a Ford F-250 Super Duty or Ford F-350 Super Duty, E-1003K provides the dimensional and material details needed for a proper ring replacement. Sealed Power E-1003K is also referenced by Gates 42168 and MAHLE S42168.

What It Helps Address

• Low compression caused by worn piston rings
• Excessive oil consumption from worn oil control rings
• Blow-by from reduced cylinder sealing
• Ring wear during engine overhaul or rebuild
• Loss of sealing performance in high-mileage Ford Super Duty engines

Installation Notes and Tips

Verify bore diameter, ring groove widths, and engine specifications before installation. Check ring end gap and follow the engine builder’s service procedure for file-fit and standard-size ring installation. Clean the cylinder walls thoroughly, inspect pistons and grooves for wear, and confirm the top, second, and oil ring orientation before assembly. This part is listed for 2011-2021 Ford F-250 Super Duty and 2011-2021 Ford F-350 Super Duty applications.

Quality Assurance

Sealed Power states that its parts use advanced designs, modern materials, and ISO- and QS-certified manufacturing processes to meet the demands of current engines. That manufacturing approach supports consistent fit and material quality for engine rebuild applications such as the Ford F-250 Super Duty and Ford F-350 Super Duty.