Sealed Power E-938K Engine Piston Ring Set

Sealed Power E-938K Piston Ring Set

Sealed Power E-938K is an engine piston ring set built for 99.00 mm bore applications with standard sizing and groove widths of 1.5 x 1.5 x 3.0 mm. It uses a steel top ring with moly, a grey iron second ring, and a 3-piece Flex Vent oil ring design for precise sealing in performance and street engines.

Compatible With 1997-2004 Chevrolet Corvette, 1998-2002 Chevrolet Camaro, 2004 Pontiac GTO, 2004-2005 Cadillac CTS, and 1998-2002 Pontiac Firebird applications that call for this 99.00 mm standard ring set. The Sealed Power E-938K is also cross-referenced to 41850CP and 12533556 for the same application.

Key Features

• 99.00 mm bore diameter and outside diameter for standard-size engine builds
• Top ring width: 1.50 mm with steel and moly face construction
• Second ring width: 1.50 mm with reverse torsional face design
• Oil ring width: 3.00 mm with 3-piece Flex Vent design
• Ring groove widths: 1.5 x 1.5 x 3.0 mm
• Built for 8-cylinder applications listed in the fitment data

Product Details

Sealed Power focuses on engine components made with modern materials and certified manufacturing processes to meet demanding engine requirements. This piston ring set is specified for standard bore service and uses a barrel-face top ring to support sealing, a reverse torsional second ring to help control oil and combustion gases, and a Flex Vent oil ring design for oil control. It is a direct-fit choice for 1997-2004 Chevrolet Corvette, 1998-2002 Chevrolet Camaro, 2004 Pontiac GTO, 2004-2005 Cadillac CTS, and 1998-2002 Pontiac Firebird engines listed in the fitment table.

What This Part Helps Address

• Low compression caused by worn or damaged piston rings
• Excessive oil consumption from worn oil control rings
• Blow-by and crankcase pressure from poor ring sealing
• Smoke from oil entering the combustion chamber
• Loss of cylinder sealing after engine wear or rebuild work

Installation Notes and Tips

Verify bore size, ring groove widths, and engine specifications before installation. Check ring end gap and follow the engine builder’s measurements and procedures for the specific application. Clean the piston ring grooves thoroughly and confirm correct ring orientation during assembly. This part is listed as standard size and is not file-fit.

Quality Assurance

Sealed Power parts are produced with leading-edge materials and ISO- and QS-certified manufacturing practices to support consistent engine component quality. Confirm all dimensions and application details against your engine build requirements before installation.