Sealed Power E-233K Engine Piston Ring Set

Sealed Power E-233K Piston Ring Set

Sealed Power E-233K is a standard-size engine piston ring set for 4.2500-inch bore applications. Built with a steel top ring with moly, a grey iron second ring with phosphate coating, and a 3-piece flex vent oil ring, it supports consistent sealing in performance and rebuild work across a wide range of Chevrolet, GMC, Chrysler, Dodge, and Pontiac engines.

Key Features

• Standard size piston ring set for 4.2500 bore diameter 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: 5/64 x 5/64 x 3/16
• Fits 8-cylinder engine applications

Detailed Description

The Sealed Power E-233K piston ring set is engineered for engines that use a 4.2500-inch bore and standard ring sizing. The steel moly top ring helps maintain cylinder sealing, while the reverse torsional second ring and phosphate-coated grey iron construction support stable oil control and combustion sealing. The 3-piece flex vent oil ring design is suited to rebuilds where dependable ring seating and oil management are priorities. This part number, E-233K, is listed with interchange references including MAHLE 40203CP and Walker Exhaust 40203 for the same application.

Compatible With Chevrolet C10, Chevrolet C20, Chevrolet K20, Chevrolet Corvette, GMC C3500, and other listed applications across 1959-1990 model years. E-233K is also referenced for Chrysler Newport, Dodge Charger, and Pontiac Parisienne applications where the bore and groove dimensions match the engine specification.

Common Uses

• Restoring cylinder compression after engine wear
• Addressing oil consumption caused by worn rings
• Improving combustion sealing during an engine rebuild
• Replacing damaged or out-of-spec piston rings
• Correcting blow-by related to ring and cylinder wear

Installation Notes

Verify bore diameter, ring groove widths, and standard-size requirements before installation. This set is specified for 4.2500 bore diameter engines with 5/64 x 5/64 x 3/16 groove widths and is not file fit. Check cylinder wall condition, ring end gap, and piston groove cleanliness during assembly. For fitment confirmation, review the listed vehicle applications such as Chevrolet C1500, GMC K3500, and Chevrolet Impala before final engine assembly.

Quality Assurance

Sealed Power states that its parts use modern designs, advanced materials, and ISO- and QS-certified manufacturing processes to meet the demands of current engine service and rebuild applications. The E-233K part number is supported by published interchange data and detailed fitment coverage for 1959-1990 vehicles.