Sealed Power E-627K Engine Piston Ring Set

Sealed Power E-627K Piston Ring Set

Sealed Power E-627K is a standard-size engine piston ring set for 4.0000-inch bore applications. It uses a steel top ring with moly, a grey iron second ring, and a 3-piece flex vent oil ring design to support consistent sealing in compatible V6 engines.

Key Features

• Standard size piston ring set for 4.0000 bore diameter applications
• Top ring material: steel with moly for wear resistance and sealing performance
• Second ring material: grey iron with reverse torsional face design
• Oil ring design: 3-piece flex vent for oil control
• Ring groove widths: 2.0 mm top, 1.5 mm second, 4.0 mm oil
• Barrel-face top ring profile and reverse torsional second ring profile
• Sealed Power manufacturing uses modern materials and ISO/QS-certified processes

Detailed Description

The Sealed Power E-627K piston ring set is built for engines that require a 4.0000-inch bore and standard-size ring dimensions. The combination of a moly-faced steel top ring, grey iron second ring, and 3-piece flex vent oil ring is engineered to support cylinder sealing, combustion control, and oil management in service applications. This part number, E-627K, also cross-references AMS Automotive 4720 for the same application.

Compatible With 1992-1995 Chevrolet Astro, 1995 Chevrolet Blazer, 1992-1995 Chevrolet S10, 1992-1995 GMC Jimmy, 1993-1995 GMC Safari, 1992-1995 GMC Sonoma, 1992-1994 Chevrolet S10 Blazer, and 1992-1994 Oldsmobile Bravada. These fitments make the Sealed Power E-627K a direct-match option for select Chevrolet and GMC V6 engine rebuilds that use 4.0000 bore and the listed groove widths.

What It Helps Address

• Excessive oil consumption from worn oil control rings
• Low compression caused by worn or damaged piston rings
• Blow-by from poor cylinder sealing
• Oil fouling from ineffective ring sealing
• Engine rebuild needs on 4.0000-bore V6 applications

Installation Notes and Tips

Verify bore diameter, ring groove widths, and standard-size requirements before assembly. The E-627K is not file fit, so ring end gaps should be checked during installation and matched to the engine builder’s specifications. Clean cylinder walls, inspect piston ring grooves, and confirm the top, second, and oil ring orientations before final assembly. For fitment reference, this part is listed for 1992-1995 Chevrolet Astro and 1992-1995 GMC Sonoma among other select applications.

Quality Assurance

Sealed Power states that its parts are produced with leading-edge materials and manufactured under ISO and QS certified processes to meet the demands of modern engines. The E-627K reflects that approach with application-specific ring materials and profiles for rebuild work.