COMP Cams GM 6.6L Duramax 258Xd Mechanical Camshaft Part Number 132-501-12

Mechanical Roller-Designed for modified performance Applications (Exh., programmer, etc. upgrades) Good for limited towing. COMP Cams always recommends checking piston to valve clearance whenever installing a Camshaft. Modern engine design dictates a compact combustion chamber and tight clearances. Tolerance stack or Installation errors can result in interference and failure. COMP recommends .080" intake and .120" exhaust minimum piston to valve clearance in most Applications. Designed for modified performance applications (Exh., programmer, etc.). Good for limited towing.

The COMP Cams GM 6.6L Duramax 258Xd mechanical camshaft is engineered for modified performance applications, making it an ideal upgrade for enthusiasts seeking enhanced power and efficiency. Designed specifically for engines with aftermarket components such as exhaust systems and programmers, this camshaft provides improved airflow dynamics to optimize engine output. Its robust construction ensures durability during aggressive driving conditions while maintaining precise timing for maximum performance. Suitable for limited towing tasks, this camshaft helps balance power gains with reliability in heavier-duty applications. Proper installation is critical; COMP Cams recommends a minimum piston to valve clearance of .080 inches for intake and .120 inches for exhaust to prevent interference and engine damage, especially given modern engine tight tolerances. The durable metal composition and precision manufacturing ensure consistent performance and longevity, making it a reliable choice for custom engine builds. This camshaft is compatible with various 2006-2007 GMC Savana, Chevrolet Express, and Sierra 2500 HD models, ensuring an easy upgrade path for owners looking to boost their vehicle’s capabilities without extensive modifications. Whether you're upgrading for performance or reliability, the COMP Cams GM 6.6L Duramax 258Xd camshaft offers a meaningful enhancement to your engine's potential, backed by trusted quality and engineering expertise.

Features:

• Designed for modified performance applications, including exhaust and programming upgrades

• Optimized for limited towing, offering enhanced power and efficiency

• Requires minimum piston-to-valve clearances of .080" intake and .120" exhaust to prevent interference

• Constructed for durability and precision to ensure long-lasting performance

• Compatible with select 2006-2007 GM and Chevrolet models, including Savana, Express, and Sierra 2500 HD

Fits
Chevrolet Express 2500 Base 2006
Chevrolet Express 2500 Base 2007
Chevrolet Express 2500 Base 2008
Chevrolet Express 2500 Base 2009
Chevrolet Express 2500 Base 2010
Chevrolet Express 2500 Base 2011
Chevrolet Express 2500 Base 2012
Chevrolet Express 2500 Base 2013
Chevrolet Express 2500 Base 2014
Chevrolet Express 2500 Base 2015
Chevrolet Express 2500 Base 2016
Chevrolet Express 2500 LS 2006
Chevrolet Express 2500 LT 2006
Chevrolet Express 3500 Base 2006
Chevrolet Express 3500 Base 2007
Chevrolet Express 3500 Base 2008
Chevrolet Express 3500 Base 2009
Chevrolet Express 3500 Base 2010
Chevrolet Express 3500 Base 2011
Chevrolet Express 3500 Base 2012
Chevrolet Express 3500 Base 2013
Chevrolet Express 3500 Base 2014
Chevrolet Express 3500 Base 2015
Chevrolet Express 3500 Base 2016
Chevrolet Express 3500 LS 2011
Chevrolet Express 3500 LS 2012
Chevrolet Express 3500 LS 2013
Chevrolet Express 3500 LS 2014
Chevrolet Express 3500 LS 2015
Chevrolet Express 3500 LS 2016
Chevrolet Express 3500 LT 2011
Chevrolet Express 3500 LT 2012
Chevrolet Express 3500 LT 2013
Chevrolet Express 3500 LT 2014
Chevrolet Express 3500 LT 2015
Chevrolet Express 3500 LT 2016
Chevrolet Silverado 2500 HD Base 2001
Chevrolet Silverado 2500 HD Base 2002
Chevrolet Silverado 2500 HD Base 2003
Chevrolet Silverado 2500 HD Base 2004
Chevrolet Silverado 2500 HD Base 2005
Chevrolet Silverado 2500 HD High Country 2015
Chevrolet Silverado 2500 HD High Country 2016
Chevrolet Silverado 2500 HD LS 2001
Chevrolet Silverado 2500 HD LS 2002
Chevrolet Silverado 2500 HD LS 2003
Chevrolet Silverado 2500 HD LS 2004
Chevrolet Silverado 2500 HD LS 2005
Chevrolet Silverado 2500 HD LS 2006
Chevrolet Silverado 2500 HD LT 2001
Chevrolet Silverado 2500 HD LT 2002
Chevrolet Silverado 2500 HD LT 2003
Chevrolet Silverado 2500 HD LT 2004
Chevrolet Silverado 2500 HD LT 2005
Chevrolet Silverado 2500 HD LT 2006
Chevrolet Silverado 2500 HD LT 2007
Chevrolet Silverado 2500 HD LT 2008
Chevrolet Silverado 2500 HD LT 2009
Chevrolet Silverado 2500 HD LT 2010
Chevrolet Silverado 2500 HD LT 2011
Chevrolet Silverado 2500 HD LT 2012
Chevrolet Silverado 2500 HD LT 2013
Chevrolet Silverado 2500 HD LT 2014
Chevrolet Silverado 2500 HD LT 2015
Chevrolet Silverado 2500 HD LT 2016
Chevrolet Silverado 2500 HD LTZ 2007
Chevrolet Silverado 2500 HD LTZ 2008
Chevrolet Silverado 2500 HD LTZ 2009
Chevrolet Silverado 2500 HD LTZ 2010
Chevrolet Silverado 2500 HD LTZ 2011
Chevrolet Silverado 2500 HD LTZ 2012
Chevrolet Silverado 2500 HD LTZ 2013
Chevrolet Silverado 2500 HD LTZ 2014
Chevrolet Silverado 2500 HD LTZ 2015
Chevrolet Silverado 2500 HD LTZ 2016
Chevrolet Silverado 2500 HD WT 2004
Chevrolet Silverado 2500 HD WT 2005
Chevrolet Silverado 2500 HD WT 2006
Chevrolet Silverado 2500 HD WT 2007
Chevrolet Silverado 2500 HD WT 2008
Chevrolet Silverado 2500 HD WT 2009
Chevrolet Silverado 2500 HD WT 2010
Chevrolet Silverado 2500 HD WT 2011
Chevrolet Silverado 2500 HD WT 2012
Chevrolet Silverado 2500 HD WT 2013
Chevrolet Silverado 2500 HD WT 2014
Chevrolet Silverado 2500 HD WT 2015
Chevrolet Silverado 2500 HD WT 2016
Chevrolet Silverado 2500 HD Classic LS 2007
Chevrolet Silverado 2500 HD Classic LT 2007
Chevrolet Silverado 2500 HD Classic WT 2007
Chevrolet Silverado 3500 Base 2001
Chevrolet Silverado 3500 Base 2002
Chevrolet Silverado 3500 Base 2003
Chevrolet Silverado 3500 Base 2004
Chevrolet Silverado 3500 Base 2005
Chevrolet Silverado 3500 LS 2001
Chevrolet Silverado 3500 LS 2002
Chevrolet Silverado 3500 LS 2003
Chevrolet Silverado 3500 LS 2004
Chevrolet Silverado 3500 LS 2005
Chevrolet Silverado 3500 LS 2006
Chevrolet Silverado 3500 LT 2001
Chevrolet Silverado 3500 LT 2002
Chevrolet Silverado 3500 LT 2003
Chevrolet Silverado 3500 LT 2004
Chevrolet Silverado 3500 LT 2005
Chevrolet Silverado 3500 LT 2006
Chevrolet Silverado 3500 WT 2004
Chevrolet Silverado 3500 WT 2006
Chevrolet Silverado 3500 Classic LS 2007
Chevrolet Silverado 3500 Classic LT 2007
Chevrolet Silverado 3500 Classic WT 2007
Chevrolet Silverado 3500 HD High Country 2015
Chevrolet Silverado 3500 HD High Country 2016
Chevrolet Silverado 3500 HD LT 2007
Chevrolet Silverado 3500 HD LT 2008
Chevrolet Silverado 3500 HD LT 2009
Chevrolet Silverado 3500 HD LT 2010
Chevrolet Silverado 3500 HD LT 2011
Chevrolet Silverado 3500 HD LT 2012
Chevrolet Silverado 3500 HD LT 2013
Chevrolet Silverado 3500 HD LT 2014
Chevrolet Silverado 3500 HD LT 2015
Chevrolet Silverado 3500 HD LT 2016
Chevrolet Silverado 3500 HD LTZ 2007
Chevrolet Silverado 3500 HD LTZ 2008
Chevrolet Silverado 3500 HD LTZ 2009
Chevrolet Silverado 3500 HD LTZ 2010
Chevrolet Silverado 3500 HD LTZ 2011
Chevrolet Silverado 3500 HD LTZ 2012
Chevrolet Silverado 3500 HD LTZ 2013
Chevrolet Silverado 3500 HD LTZ 2014
Chevrolet Silverado 3500 HD LTZ 2015
Chevrolet Silverado 3500 HD LTZ 2016
Chevrolet Silverado 3500 HD WT 2007
Chevrolet Silverado 3500 HD WT 2008
Chevrolet Silverado 3500 HD WT 2009
Chevrolet Silverado 3500 HD WT 2010
Chevrolet Silverado 3500 HD WT 2011
Chevrolet Silverado 3500 HD WT 2012
Chevrolet Silverado 3500 HD WT 2013
Chevrolet Silverado 3500 HD WT 2014
Chevrolet Silverado 3500 HD WT 2015
Chevrolet Silverado 3500 HD WT 2016
GMC Savana 2500 Base 2006
GMC Savana 2500 Base 2007
GMC Savana 2500 Base 2008
GMC Savana 2500 Base 2009
GMC Savana 2500 Base 2010
GMC Savana 2500 Base 2011
GMC Savana 2500 Base 2012
GMC Savana 2500 Base 2013
GMC Savana 2500 Base 2014
GMC Savana 2500 Base 2015
GMC Savana 2500 Base 2016
GMC Savana 3500 Base 2006
GMC Savana 3500 Base 2007
GMC Savana 3500 Base 2008
GMC Savana 3500 Base 2009
GMC Savana 3500 Base 2010
GMC Savana 3500 Base 2011
GMC Savana 3500 Base 2012
GMC Savana 3500 Base 2013
GMC Savana 3500 Base 2014
GMC Savana 3500 Base 2015
GMC Savana 3500 Base 2016
GMC Savana 3500 LS 2011
GMC Savana 3500 LS 2012
GMC Savana 3500 LS 2013
GMC Savana 3500 LS 2014
GMC Savana 3500 LS 2015
GMC Savana 3500 LS 2016
GMC Savana 3500 LT 2011
GMC Savana 3500 LT 2012
GMC Savana 3500 LT 2013
GMC Savana 3500 LT 2014
GMC Savana 3500 LT 2015
GMC Savana 3500 LT 2016
GMC Sierra 2500 HD Base 2002
GMC Sierra 2500 HD Base 2003
GMC Sierra 2500 HD Base 2004
GMC Sierra 2500 HD Base 2005
GMC Sierra 2500 HD Base 2015
GMC Sierra 2500 HD Base 2016
GMC Sierra 2500 HD Denali 2011
GMC Sierra 2500 HD Denali 2012
GMC Sierra 2500 HD Denali 2013
GMC Sierra 2500 HD Denali 2014
GMC Sierra 2500 HD Denali 2015
GMC Sierra 2500 HD Denali 2016
GMC Sierra 2500 HD SL 2001
GMC Sierra 2500 HD SL 2002
GMC Sierra 2500 HD SL 2006
GMC Sierra 2500 HD SLE 2001
GMC Sierra 2500 HD SLE 2002
GMC Sierra 2500 HD SLE 2003
GMC Sierra 2500 HD SLE 2004
GMC Sierra 2500 HD SLE 2005
GMC Sierra 2500 HD SLE 2006
GMC Sierra 2500 HD SLE 2007
GMC Sierra 2500 HD SLE 2008
GMC Sierra 2500 HD SLE 2009
GMC Sierra 2500 HD SLE 2010
GMC Sierra 2500 HD SLE 2011
GMC Sierra 2500 HD SLE 2012
GMC Sierra 2500 HD SLE 2013
GMC Sierra 2500 HD SLE 2014
GMC Sierra 2500 HD SLE 2015
GMC Sierra 2500 HD SLE 2016
GMC Sierra 2500 HD SLT 2001
GMC Sierra 2500 HD SLT 2002
GMC Sierra 2500 HD SLT 2003
GMC Sierra 2500 HD SLT 2004
GMC Sierra 2500 HD SLT 2005
GMC Sierra 2500 HD SLT 2006
GMC Sierra 2500 HD SLT 2007
GMC Sierra 2500 HD SLT 2008
GMC Sierra 2500 HD SLT 2009
GMC Sierra 2500 HD SLT 2010
GMC Sierra 2500 HD SLT 2011
GMC Sierra 2500 HD SLT 2012
GMC Sierra 2500 HD SLT 2013
GMC Sierra 2500 HD SLT 2014
GMC Sierra 2500 HD SLT 2015
GMC Sierra 2500 HD SLT 2016
GMC Sierra 2500 HD WT 2003
GMC Sierra 2500 HD WT 2004
GMC Sierra 2500 HD WT 2005
GMC Sierra 2500 HD WT 2006
GMC Sierra 2500 HD WT 2007
GMC Sierra 2500 HD WT 2008
GMC Sierra 2500 HD WT 2009
GMC Sierra 2500 HD WT 2010
GMC Sierra 2500 HD WT 2011
GMC Sierra 2500 HD WT 2012
GMC Sierra 2500 HD WT 2013
GMC Sierra 2500 HD WT 2014
GMC Sierra 2500 HD Classic SL 2007
GMC Sierra 2500 HD Classic SLE 2007
GMC Sierra 2500 HD Classic SLT 2007
GMC Sierra 2500 HD Classic WT 2007
GMC Sierra 3500 Base 2002
GMC Sierra 3500 Base 2003
GMC Sierra 3500 Base 2004
GMC Sierra 3500 Base 2005
GMC Sierra 3500 SL 2001
GMC Sierra 3500 SL 2002
GMC Sierra 3500 SL 2006
GMC Sierra 3500 SLE 2001
GMC Sierra 3500 SLE 2002
GMC Sierra 3500 SLE 2003
GMC Sierra 3500 SLE 2004
GMC Sierra 3500 SLE 2005
GMC Sierra 3500 SLE 2006
GMC Sierra 3500 SLT 2001
GMC Sierra 3500 SLT 2002
GMC Sierra 3500 SLT 2003
GMC Sierra 3500 SLT 2004
GMC Sierra 3500 SLT 2005
GMC Sierra 3500 SLT 2006
GMC Sierra 3500 WT 2004
GMC Sierra 3500 WT 2005
GMC Sierra 3500 WT 2006
GMC Sierra 3500 Classic SL 2007
GMC Sierra 3500 Classic SLE 2007
GMC Sierra 3500 Classic SLT 2007
GMC Sierra 3500 Classic WT 2007
GMC Sierra 3500 HD Base 2015
GMC Sierra 3500 HD Base 2016
GMC Sierra 3500 HD Denali 2011
GMC Sierra 3500 HD Denali 2012
GMC Sierra 3500 HD Denali 2013
GMC Sierra 3500 HD Denali 2014
GMC Sierra 3500 HD Denali 2015
GMC Sierra 3500 HD Denali 2016
GMC Sierra 3500 HD SLE 2007
GMC Sierra 3500 HD SLE 2008
GMC Sierra 3500 HD SLE 2009
GMC Sierra 3500 HD SLE 2010
GMC Sierra 3500 HD SLE 2011
GMC Sierra 3500 HD SLE 2012
GMC Sierra 3500 HD SLE 2013
GMC Sierra 3500 HD SLE 2014
GMC Sierra 3500 HD SLE 2015
GMC Sierra 3500 HD SLE 2016
GMC Sierra 3500 HD SLT 2007
GMC Sierra 3500 HD SLT 2008
GMC Sierra 3500 HD SLT 2009
GMC Sierra 3500 HD SLT 2010
GMC Sierra 3500 HD SLT 2011
GMC Sierra 3500 HD SLT 2012
GMC Sierra 3500 HD SLT 2013
GMC Sierra 3500 HD SLT 2014
GMC Sierra 3500 HD SLT 2015
GMC Sierra 3500 HD SLT 2016
GMC Sierra 3500 HD WT 2007
GMC Sierra 3500 HD WT 2008
GMC Sierra 3500 HD WT 2009
GMC Sierra 3500 HD WT 2010
GMC Sierra 3500 HD WT 2011
GMC Sierra 3500 HD WT 2012
GMC Sierra 3500 HD WT 2013
GMC Sierra 3500 HD WT 2014
Hummer H1 Alpha 2006