Sealed Power E-626K Engine Piston Ring Set

Sealed Power E-626K Piston Ring Set

Sealed Power E-626K is an engine piston ring set for 103.00 mm bore applications with standard-size ring groove widths of 3.0 mm, 2.0 mm, and 4.0 mm. It uses a steel top ring with moly, a grey iron second ring, and a 2-piece conformatic oil ring design for V8 engine rebuilds that demand precise ring-to-groove matching.

Key Features

• 103.00 mm bore diameter and outside diameter
• Standard size ring set for 3.0 x 2.0 x 4.0 mm groove widths
• Top ring face design: keystone
• Second ring face design: reverse torsional
• Oil ring design: 2-piece conformatic
• Steel top ring with moly for wear resistance
• Grey iron second ring for stable sealing performance
• Fits 8-cylinder engines
• File fit: No

Detailed Description

This Sealed Power piston ring set is built for 103 mm standard bore engines used in Chevrolet, GMC, and Hummer V8 applications. The ring package combines a keystone top ring, reverse torsional second ring, and conformatic oil control ring to support cylinder sealing, oil control, and consistent compression in rebuild work. Sealed Power uses modern materials and ISO- and QS-certified manufacturing practices to produce engine components that meet demanding service requirements. This part number, E-626K, is a direct match for applications such as Chevrolet C1500, GMC Yukon, and Hummer H1 where the listed groove widths and bore size align.

This part cross-references 2C4744 and 41718 for the same application.

What It Is Used For

• Restoring compression loss caused by worn piston rings
• Reducing oil consumption from worn ring sealing surfaces
• Addressing blow-by in high-mileage V8 engines
• Supporting engine rebuilds with correct 103.00 mm bore sizing
• Replacing worn rings in Chevrolet, GMC, and Hummer applications

Installation Notes and Tips

Verify bore diameter, ring groove widths, and piston compatibility before assembly. E-626K is a standard-size ring set and is not file fit, so ring end gaps should be checked during installation rather than adjusted by filing. Clean ring grooves thoroughly, confirm correct ring orientation, and follow the engine builder’s specifications for end-gap and break-in procedures. Compatible With 1992-2000 Chevrolet C2500, 1994-1998 Chevrolet C1500, and 2002-2004 Hummer H1 when the engine uses the listed 103.00 mm bore and 3.0 x 2.0 x 4.0 mm groove widths.

Quality Assurance

Sealed Power manufactures engine parts with leading-edge materials and certified production processes to support consistent fit and performance. Part number E-626K is built to standard-size specifications for the listed applications and is backed by the brand’s established engine component engineering approach.