Sealed Power E-979K Engine Piston Ring Set

Sealed Power E-979K Engine Piston Ring Set

Sealed Power E-979K is a standard-size engine piston ring set built for 4.0000 in. bore applications with a 101.60 mm bore diameter. It uses a steel top ring with moly, a grey iron second ring with phosphate coating, and a 3-piece flex vent oil ring for precise sealing in performance and heavy-duty V8 applications.

Compatible With Chevrolet Silverado 2500 HD, GMC Sierra 3500 HD, Cadillac Escalade, and other GM trucks and SUVs listed below, this piston ring set is matched to 1.2 mm, 1.5 mm, and 2.5 mm ring groove widths. Part number E-979K is also referenced by 2M5170 and 42084CP for the same application.

Key Features

• Standard-size piston ring set for 101.60 mm / 4.0000 in. bore applications
• Top ring material: steel with moly for wear resistance
• Second ring material: grey iron with phosphate coating
• Top ring face design: barrel face
• Second ring face design: reverse torsional
• Oil ring design: 3-piece flex vent
• Ring groove widths: 1.2 mm x 1.5 mm x 2.5 mm
• File fit: No

Detailed Description

Sealed Power E-979K is engineered for engines that require a 4.0000-inch bore and standard ring sizing. The steel moly top ring helps maintain cylinder sealing under heat and load, while the reverse torsional second ring supports oil control and combustion sealing. The 3-piece flex vent oil ring design is used to manage oil film on the cylinder wall and maintain consistent ring function in service.

This part is a direct fit for a wide range of GM applications, including Chevrolet Silverado 1500, Silverado 2500 HD, Suburban 1500, Tahoe, Corvette, Express 2500, and GMC Sierra and Yukon models listed in the fitment data. It also fits Cadillac CTS, Escalade, Pontiac G8, Saab 9-7x, Hummer H2, and Pontiac GTO applications with the specified bore and groove dimensions. Part number E-979K is commonly searched for GM 4.8L, 5.3L, 6.0L, and related V8 rebuild work where the correct ring profile and groove widths are critical.

What It Helps Address

• Low compression caused by worn or damaged piston rings
• Excessive oil consumption from poor ring sealing
• Blow-by and crankcase pressure buildup
• Uneven cylinder sealing during engine rebuilds
• Ring-to-groove mismatch when restoring standard bore engines

Installation Notes and Tips

Verify bore diameter, ring groove widths, and piston specifications before installation. This set is not file fit, so ring end gaps should be checked against the engine builder’s specifications during assembly. Clean the ring grooves thoroughly, confirm correct ring orientation, and inspect cylinder wall condition before final installation.

Quality Assurance

Sealed Power states that its parts are manufactured with advanced designs and materials in ISO- and QS-certified facilities to meet the demands of modern engines. E-979K follows that product approach for rebuilds requiring accurate fitment and dependable ring sealing.

• Fits 2011-2017 Chevrolet Caprice, N/A
• Fits 2005-2016 Chevrolet Express 2500, N/A
• Fits 2005-2016 Chevrolet Express 3500, N/A
• Fits 2005-2016 Chevrolet Silverado 2500 HD, N/A
• Fits 2007-2016 Chevrolet Silverado 3500 HD, N/A
• Fits 2016 Chevrolet Suburban 3500 HD, N/A
• Fits 2005-2016 GMC Savana 2500, N/A
• Fits 2005-2016 GMC Savana 3500, N/A
• Fits 2005-2016 GMC Sierra 2500 HD, N/A
• Fits 2007-2016 GMC Sierra 3500 HD, N/A
• Fits 2009-2013 Cadillac Escalade, N/A
• Fits 2007-2013 Chevrolet Silverado 1500, N/A
• Fits 2005-2013 Chevrolet Suburban 2500, N/A
• Fits 2008-2013 Chevrolet Tahoe, N/A
• Fits 2007-2013 GMC Sierra 1500, N/A
• Fits 2008-2013 GMC Yukon, N/A
• Fits 2005-2013 GMC Yukon XL 2500, N/A
• Fits 2007-2009 Chevrolet Avalanche, N/A
• Fits 2006-2009 Chevrolet Suburban 1500, N/A
• Fits 2006-2009 Chevrolet Trailblazer, N/A
• Fits 2007-2009 GMC Yukon XL 1500, N/A
• Fits 2008-2009 Pontiac G8, N/A
• Fits 2008-2009 Saab 9-7x, N/A
• Fits 2006-2007 Cadillac CTS, N/A
• Fits 2006-2007 Chevrolet Corvette, N/A
• Fits 2007 Chevrolet Silverado 1500 Classic, N/A
• Fits 2007 Chevrolet Silverado 1500 HD Classic, N/A
• Fits 2007 Chevrolet Silverado 2500 HD Classic, N/A
• Fits 2007 Chevrolet Silverado 3500 Classic, N/A
• Fits 2007 GMC Sierra 1500 Classic, N/A
• Fits 2007 GMC Sierra 1500 HD Classic, N/A
• Fits 2007 GMC Sierra 2500 HD Classic, N/A
• Fits 2007 GMC Sierra 3500 Classic, N/A
• Fits 2005-2007 Hummer H2, N/A
• Fits 2005-2006 Chevrolet Silverado 1500 HD, N/A
• Fits 2005-2006 Chevrolet Silverado 3500, N/A
• Fits 2005-2006 Chevrolet SSR, N/A
• Fits 2005-2006 GMC Sierra 1500 HD, N/A
• Fits 2005-2006 GMC Sierra 3500, N/A
• Fits 2005-2006 Pontiac GTO, N/A