Piston Ring Set 4.040 .043 .043 3.0MM

The JE PISTONS Piston Ring Set 4.040 .043 .043 3.0MM is designed for high-performance engine builders and automotive enthusiasts who require precise specifications for custom and modified engines. This set is essential for applications where OEM tolerances are insufficient, ensuring a critical seal between the piston and cylinder wall.

With a bore specification of 4.040 inches, this piston ring set features a top ring and second ring thickness of .043 inches, along with a 3.0MM oil ring. These specifications are crucial for maintaining compression, controlling blow-by, and ensuring long-term engine reliability. JE Pistons manufactures these rings using hardened steel to withstand the thermal and mechanical stresses of high-RPM operation.

This piston ring set is ideal for engine machining shops, performance builders, and mechanics who are restoring classic engines or building high-revving street or track motors. Proper installation and attention to ring gap clearance and radial tension are vital for optimal performance and engine longevity.