This listing is for a set of (8) pistons and matching rings in your choice of over sizes compatible replacements for 2003-08 Chevy GM 6.0L (364) V8 OHV 16 LQ4 L76 LYC. VIN 5, H, N & U. Pistons feature coated skirts and a .058" recess. Floating pins with lock rings included! Piston pin diameter .943". Please measure!! Compression Height 1.328 All Moresa Pistons meet and may exceed the quality requirements. Moresa Pistons manufacturing plant has the highest manufacturing process (ISO 14001:2004) so our products meet all the quality requirements of the markets where we commercialize our products