OE Number: Trunion Kit Components Equivalent To Factory Specifications For Replacement Compatible Vehicles: Fits 1997–2004 Corvette C5 (All submodels) with 5.7L LS1 Engine Fits 2001–2005 Silverado 1500/2500/3500 (Various submodels) with 4.8L/5.3L LQ4/LM7 Engines Fits 2002–2005 Camaro Z28 SS (All submodels) with 5.7L LS1 Engine Fits 2003–2007 Express 1500/2500/3500 (Various submodels) with 4.8L/5.3L Engines Fits 2004–2007 SSR (All submodels) with 5.3L LS2 Engine Fits 2002–2004 CTS-V with 5.7L LS6 Engine Fits 2005–2006 GTO with 5.7L LS2 Engine Fits 1999–2007 Sierra (Various submodels) with 4.8L/5.3L Engines Fits 2002–2006 Yukon/Yukon XL (Various submodels) with 5.3L Engines Package Includes: Rocker Arm Assemblies (Quantity as specified by set configuration) Trunion Hardware Kit (Includes Spindles, Retainers, and C-Clips or equivalent components) Installation Information: Component replacement requires removal of valve covers and rocker arm assemblies. The rocker arm trunion components must be disassembled using appropriate tooling. Trunion components are press-fit or seated onto the rocker arm shaft. Reinstallation involves torquing the rocker arm assemblies to the manufacturer's specified torque values according to the engine family service manual sequence. Valve lash adjustment may be required after assembly depending on the specific rocker arm and valvetrain configuration.