The 1999-2010 Chevy Vortec Connecting Rod Set by Federal Mogul is designed for the 4.8L, 5.3L, 6.0L Vortec engine with a .020 undersized diameter. The connecting rods are made of durable alloy material and come with the interchange part number Clevite CB7628 and OE/OEM part number 04A 3320 AP-20. Manufactured in the United States, this set includes everything needed for a complete replacement of connecting rods in your Chevy Vortec engine. Fits Chevy Silverado 1999-2006.