✓Replacement OE Number - ES72220, GS33449. Please confirm that the old part number matches the one listed before making a purchase
✓Compatibility - The head bolts kit is compatible with 2004-2007 Chevy Silverado 1500 4.8/5.3/6.0L, 2004-2008 Silverado 2500 HD/Suburban 2500 6.0L, 2004-2009 Tahoe 4.8/5.3/6.0L, 2004-2006 Avalanche 1500/SSR/Suburban 1500, 2004-2008 Express 3500 4.8/6.0L, 2004-2008 Express 2500 4.8/5.3/6.0L, 2004-2007 Corvette 5.7/6.0L, 2007 Silverado 1500 Classic 4.8/5.3/6.0L, 2004 Silverado 2500, 2007 Avalanche/Silverado 2500 HD Classic/Silverado 3500 Classic 6.0L, 2004-2008 Express 1500 5.3L, 2004-2006 Silverado 3500 6.0L, 2006-2009 Impala 5.3L, 2006-2008 Trailblazer 5.3/6.0L, 2007-2008 Silverado 3500 HD 6.0L, 2005-2006 Silverado 1500 HD, 2006-2007 Monte Carlo 5.3L
✓Compatibility - The head bolts kit is compatible with 2004-2007 GMC Sierra 1500 4.8/5.3/6.0/6.2L, 2004-2009 Yukon 4.8/6.2L, 2004-2006 Yukon 5.3/6.0L, 2004-2007 Yukon XL 1500 6.0/6.2L, 2004-2008 Sierra 2500 HD/Yukon XL 2500 6.0L, 2004-2008 Savana 2500/Savana 3500 4.8/6.0L, 2007 Sierra 1500 Classic 4.8/5.3/6.0L, 2005-2009 Envoy 5.3L, 2004-2008 Savana 1500 5.3L, 2004-2006 Sierra 3500 6.0L, 2007 Sierra 2500 HD Classic 6.0L, 2004-2006 Envoy XL 5.3L, 2004 Sierra 2500, 2005-2006 Sierra 1500 HD, 2007-2008 Sierra 3500 HD 6.0L, 2004-2005 Envoy XUV 5.3L, 2004-2008 Cadillac Escalade/Escalade ESV/Escalade EXT, 2004-2007 CTS 5.7/6.0L, 2004-2008 Hummer H2, 2008-2009 H3 5.3L, 2004-2006 Pontiac GTO
✓Package Include - Cylinder Head Bolts x 30. Among which Bolt Critical Length 100mm (Bolt 1); 45mm (Bolt 2), Bolt Diameter 11mm (Bolt 1); 8mm (Bolt 2), Bolt Head Size 15mm (Bolt 1); 10mm (Bolt 2), Bolt Thread Length 85mm (Bolt 1); 32mm (Bolt 2), Bolt Thread Pitch 2.00 (Bolt 1); 1.25 (Bolt 2)
✓Precise Fit - Strictly manufactured in accordance with original factory size and thread standard, precise thread design ensures tight locking, effectively prevent engine oil leakage and air leakage after installation