Sealed Power E-434K Engine Piston Ring Set

Sealed Power E-434K Piston Ring Set

Sealed Power E-434K is a standard-size engine piston ring set for 3.8000-inch bore applications. It is built with a steel top ring with moly face, a reverse torsional second ring, and a 3-piece Flex Vent oil ring design for precise cylinder sealing and oil control in select Buick, Chevrolet, and Pontiac V6 applications.

Key Features

• Part number E-434K for easy identification and ordering
• Standard size for 3.8000-inch bore diameter
• Top ring material: steel with moly face
• Top ring width: 5/64 in.
• Second ring width: 5/64 in.
• Second ring face design: reverse torsional
• Second ring material: grey iron
• Oil ring design: 3-piece Flex Vent
• Ring set groove widths: 5/64 x 5/64 x 3/16 in.
• Built for 6-cylinder engine applications

Detailed Description

This Sealed Power piston ring set is engineered for engines that use a 3.8000-inch bore and standard ring sizing. The steel moly top ring supports cylinder sealing, while the reverse torsional second ring helps maintain consistent contact in the ring groove. The 3-piece Flex Vent oil ring design is used to manage oil control and support stable compression performance. Sealed Power parts are manufactured with modern materials and ISO- and QS-certified processes to meet the demands of current engine service work. This E-434K ring set is listed for applications including 1978-1980 Buick LeSabre, 1978-1987 Buick Regal, 1979-1980 Buick Century, 1979-1985 Buick Riviera, 1980-1981 Chevrolet Monte Carlo, and 1989 Pontiac Firebird.

Common Uses

• Restoring compression in a worn 3.8000-inch bore engine
• Addressing oil consumption caused by worn piston rings
• Reducing blow-by from poor cylinder sealing
• Replacing damaged or fatigued rings during engine rebuild work
• Supporting proper ring groove sealing in standard-size service applications

Installation Notes and Tips

Verify bore diameter, ring groove widths, and cylinder count before installation. This set is standard size and is not file fit. Confirm the piston ring groove dimensions match 5/64 x 5/64 x 3/16 in. before assembly. For best results, follow the engine builder’s ring end-gap and break-in procedures, and inspect cylinder wall condition before installing the rings. Fits 1978-1980 Buick LeSabre, N/A; Fits 1978-1987 Buick Regal, N/A; Fits 1979-1980 Buick Century, N/A; Fits 1979-1985 Buick Riviera, N/A; Fits 1980-1981 Chevrolet Monte Carlo, N/A; Fits 1989 Pontiac Firebird, N/A.

Quality Assurance

Sealed Power uses leading-edge materials and ISO- and QS-certified manufacturing methods to produce engine components for demanding service environments. This part cross-references Carlson 41252 for the same application.