Manley 46366GT-8 4.185" Bore 1.5mm Gas Top Steel Piston Ring Set

The Manley 46366GT-8 is a high-performance piston ring set designed for engines with a 4.185-inch bore diameter. Featuring a 1.5mm top ring profile with Manley's Gas Top (GT) technology, these rings are engineered for forced-induction and high-horsepower applications where superior sealing and reduced blowby are critical.

Manley's Gas Top ring design channels combustion pressure behind the top ring, increasing ring-to-cylinder wall contact and dramatically improving ring seal under boost or high-cylinder-pressure conditions. Constructed from premium steel, these rings offer excellent durability, heat resistance, and long service life compared to standard cast iron alternatives.

Key Features:

• Bore Size: 4.185 inches
• Top Ring Width: 1.5mm
• Ring Material: High-strength steel construction
• Gas Top (GT) Design: Combustion pressure-assisted sealing for maximum ring seal
• Performance Oriented: Ideal for turbocharged, supercharged, and high-compression naturally aspirated builds

The Manley 46366GT-8 piston ring set is a trusted choice among professional engine builders seeking reliable sealing performance in high-output engine builds.