VIAIR 400C Compressor Connecting Rod / Piston / Cylinder Wall Rebuild Kit Viair 400C Compressors Connecting Rod / Piston / Cylinder Wall Rebuild Kit Includes: Piston Assembly w/ Seal, Connecting Rod, Sealed Bearings and Counter Weights Cylinder Wall Kit w/ O Rings, Head Cover, Gasket and Head Bolts. VERIFY PISTON STLYE - See Photo - NEW STYLE ONLY Instructions - FOLLOW CAREFULLY OR HAVE A PROFESSIONAL DO IT NO WARRANTY ON REBUILD KITS OR PARTS