Piston Ring Set 4.040 Claimer 5/64 5/64 3/16

The TOTAL SEAL Piston Ring Set 4.040 Claimer 5/64 5/64 3/16 (Part #CL9090 40) is a precision engine component engineered for eight-cylinder builds requiring low-tension operation and superior compression sealing. This drop-in piston ring kit delivers gapless second-ring design that maintains reliable compression without excessive drag—critical for both street and competition applications where power delivery and engine longevity matter.

The ring set is specified for 4.040-inch bore engines, with top and second ring gaps of 5/64 inch and oil ring grooves of 3/16 inch. These dimensions are calibrated to work across a range of eight-cylinder displacements commonly found in performance builds. TOTAL SEAL's Claimer-series rings are designed to balance ring tension against cylinder wall friction, reducing parasitic losses while maintaining the gas seal needed for consistent combustion pressure and controlled blow-by.

This piston ring set is intended for engine builders, machine shops, and performance enthusiasts rebuilding eight-cylinder powerplants where factory ring sets may not meet precision specifications. The 4.040-inch bore sizing places these rings in the overbore category, commonly used when restoring worn cylinders or building stroker engines. Proper installation requires checking ring end gap, verifying bore size, and following manufacturer torque specifications for the piston assembly.

TOTAL SEAL rings are recognized throughout the engine-building community for holding tight tolerances and delivering consistent performance across multiple heat cycles. The Claimer line balances cost-effectiveness with reliability, making it a practical choice for street-driven and occasional race engines that demand dependable compression sealing without premium pricing.

At 1.11 lbs, this complete ring set is a direct fit for 4.040-inch bore eight-cylinder applications. Stock this essential engine component for your next rebuild, restoration, or high-performance project.