Manley 46163GT-8 Gapless Top Piston Ring Set 4.155" Bore 1/16 1/16 3/16 - 8 Cylinder

The Manley 46163GT-8 is a performance piston ring set featuring a Total Seal® Gapless® top ring design, engineered for 8-cylinder engines with a 4.155-inch bore. This file-fit ring set uses a 1/16" top ring, 1/16" second ring, and 3/16" oil ring configuration, offering superior sealing performance over conventional ring packages.

The Gapless® top ring technology virtually eliminates the end gap found in standard rings, dramatically reducing combustion gas blow-by and improving cylinder pressure retention. This translates directly into more power, better throttle response, and reduced oil consumption — making this ring set an ideal choice for high-performance and racing engine builds.

Key Features:

• Bore Size: 4.155 inches
• Ring Pack: 1/16" Top × 1/16" Second × 3/16" Oil
• Top Ring Type: Total Seal® Gapless® Ductile Iron
• Fit Type: File Fit
• Quantity: Complete set for 8 cylinders
• Manufactured for Manley Performance by Total Seal®
• Designed to pair with Manley Platinum Series pistons for 4.155" bore applications

Manley Performance piston rings deliver enhanced sealing capabilities, reduced friction, and improved overall engine efficiency. The Gapless® design is especially beneficial in forced induction, nitrous, and high-compression naturally aspirated builds where minimizing blow-by is critical to consistent power output.