Manley 46216GT-8 4.060" Bore Gapless Piston Ring Set .043 Top 3mm Oil Street

The Manley 46216GT-8 is a gapless piston ring set engineered for high-performance street applications with a 4.060-inch bore diameter. Designed to minimize blow-by and maximize cylinder pressure retention, these rings are an ideal upgrade for performance-built small block and big block engines running at or near a 4.060" bore size.

The gapless top ring design eliminates the traditional end gap found in conventional rings, effectively sealing combustion gases and improving compression efficiency. This translates to more power, better throttle response, and reduced crankcase contamination — all critical factors in a high-output street or street/strip build.

Key Features:

• Bore Size: 4.060 inches
• Top Ring Thickness: .043 inch — standard tension, compatible with most performance pistons
• Oil Ring: 3mm low-tension oil ring package
• Ring Design: Gapless top ring for superior combustion sealing
• Application: Street (ST) — optimized for street and mild performance use
• Quantity: 8-cylinder set (8 rings per pack)
• Manufacturer: Manley Performance — a trusted name in performance engine components

Manley's gapless ring sets are a popular choice among engine builders looking to reduce ring blow-by without the expense of fully custom ring packages. The 3mm low-tension oil ring reduces frictional losses while maintaining effective oil control across a wide RPM range. Whether you're building a naturally aspirated street engine or a mild forced-induction application, the 46216GT-8 delivers proven sealing performance.