Sealed Power E-994K Engine Piston Ring Set

Sealed Power E-994K Piston Ring Set

Sealed Power E-994K is an engine piston ring set built for 95.00 mm bore applications with a standard-size ring package and OE-style groove dimensions. It is engineered for Ford Super Duty gas engine service where consistent ring seal, oil control, and combustion pressure retention matter.

Compatible With 2003-2010 Ford F-250 Super Duty, Ford F-350 Super Duty, Ford E-350 Super Duty, Ford E-350 Club Wagon, and Ford Excursion applications listed below. This part cross-references MAHLE 41940 for the same application.

Key Features

• Part number: E-994K
• 95.00 mm bore diameter and outside diameter
• Standard size piston ring set
• Top ring: steel with chrome face, key stone design
• Second ring: grey iron with phosphate coating, reverse torsional face design
• Oil ring: 2-piece conformatic design
• Ring groove widths: 2.3 x 2.0 x 3.5 mm
• Built for 8-cylinder engine applications

Detailed Description

Sealed Power E-994K piston rings are manufactured with materials and processes selected for modern engine demands, including ISO- and QS-certified production standards. The ring set uses a chrome steel top ring for wear resistance, a grey iron second ring with phosphate coating for stability, and a 2-piece conformatic oil ring for oil control. With a 95.00 mm bore size and standard sizing, this set is specified for Ford truck and SUV engine rebuild work where correct ring geometry is critical.

Fits 2004-2010 Ford E-350 Super Duty, N/A; Fits 2003-2007 Ford F-250 Super Duty, N/A; Fits 2003-2007 Ford F-350 Super Duty, N/A; Fits 2004-2005 Ford E-350 Club Wagon, N/A; Fits 2003-2005 Ford Excursion, N/A. The E-994K part number is also a useful reference when matching piston ring specifications for these Ford applications.

Common Repair Uses

• Restoring cylinder compression after engine wear
• Addressing oil consumption caused by worn ring sealing
• Correcting blow-by from reduced piston ring tension or sealing
• Supporting rebuilds that require standard-size 95.00 mm rings
• Replacing damaged or heat-worn rings during engine overhaul

Installation Notes and Tips

Verify bore diameter, ring groove widths, and engine application before installation. The listed groove widths are 2.3 x 2.0 x 3.5 mm, so matching the piston and cylinder specification is essential for proper fit. Clean ring grooves thoroughly, check end gaps to the engine builder’s specification, and confirm ring orientation during assembly.

Quality Assurance

Sealed Power states that its parts are produced with leading-edge materials and certified manufacturing processes to meet the demands of modern engines. E-994K is built to those standards for rebuilders and technicians who need consistent ring fit and sealing performance in Ford E-350 Super Duty, F-250 Super Duty, F-350 Super Duty, E-350 Club Wagon, and Excursion engine service.