This listing is for set (8) Hypereutectic Flat Top coated Standard 3.780 Bore size Pistons with Floating pins, clips,Matching rings and standard journal size crankshaft rod and main bearings compatible with 1999-2009 GM Chevrolet LS 4.8L & 5.3L Engines GEN III & IV. These pistons and bearings are replacements for these applications: 1999-06 4.8L VIN Code V and 2005-2009 4.8L VIN Code C or K. Also fits, 2005-09 5.3L VIN Codes B, M, J, 0, 3 & C engine LM4, LS4, L33, LH8, LH6, LMG, LY5, LY2, L20. All with Floating Pins. Pistons are Hypereutectic Coated Skirts includes Pins. Compression Height: 1.323, NOTE: Pin Diameter: .943"; pins included (Please measure for accuracy). Some early models had .945" Pin. Ring Grooves are: [email protected] and 1 @ 3.0MM thickness.