Sealed Power E-300X Engine Piston Ring Set

Sealed Power E-300X Piston Ring Set

Sealed Power E-300X is a standard-size engine piston ring set for vintage V8 rebuilds. It is built for 1970-1976 Pontiac applications and uses durable top and second rings to support restoration work on classic Pontiac Bonneville, Catalina, Firebird, Grand Prix, LeMans, GTO, and related models.

Key Features

• Standard size piston ring set for compatible vintage engine rebuilds
• Designed for 8-cylinder Pontiac engines
• File fit: No
• Durable top and second ring construction
• Coverage for applications over 35 years old
• Manufactured under ISO and QS certified processes

Product Details

The Sealed Power E-300X piston ring set is intended for classic engine service where correct ring sizing and dependable sealing matter. This part number is listed for 1970-1976 Pontiac Bonneville, 1970-1976 Pontiac Catalina, 1971-1976 Pontiac Firebird, 1975-1976 Pontiac Grand LeMans, 1970-1976 Pontiac Grand Prix, 1971-1974 Pontiac Laurentian, 1970-1974 Pontiac LeMans, 1970-1974 Pontiac Parisienne, 1973-1975 Pontiac Grand Am, and 1970-1973 Pontiac GTO. If you are rebuilding a Pontiac V8 and need a standard-size ring set, E-300X provides a direct fitment reference for these vintage applications.

This part cross-references Bosch BC1814 for the same application.

What It Helps Address

• Low compression from worn piston rings
• Excessive oil consumption caused by ring wear
• Blow-by and crankcase pressure issues
• Loss of cylinder sealing during engine rebuilds
• Restoration needs for aging Pontiac V8 engines

Installation Notes

Confirm cylinder bore condition and ring end gap before assembly. Because this is not a file-fit design, verify standard-size compatibility with the engine specification before installation. Clean ring grooves thoroughly, inspect pistons for wear, and follow the engine builder’s measurement procedure for Pontiac Bonneville, Catalina, Firebird, Grand Prix, LeMans, and GTO rebuilds.

Quality Assurance

Sealed Power Vintage components are produced for older applications and built with materials and manufacturing controls aligned to ISO and QS certified processes. The E-300X reflects that focus on restoration-grade engine service for classic Pontiac rebuilds.