Wagler C6686-2 Alternate Fire Camshaft | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features: - Alternate fire design for smoother operation - Improves torque across the powerband - Ideal for towing and daily driving - Supports mild race and street builds - No piston valve reliefs required - Direct fit for 2001–2016 Duramax engines - Enhances overall engine drivability - Increases mid-range power and response - Stage 1 profile for balanced performance - Requires engine harness modification - Includes detailed installation instructions - Built for long-term durability A Smarter Cam Choice for Street and Towing Builds If you're running a Duramax from 2001 to 2016 and want a camshaft that delivers noticeable gains without sacrificing everyday reliability, the Wagler C6686-2 Alternate Fire Camshaft is a strong contender. This Stage 1 cam is engineered to improve overall drivability and mid-range performance, making it a great fit for trucks that see a mix of towing, street use, and occasional racing. The alternate fire design helps smooth out engine operation, which translates to better throttle response and a more refined driving feel, especially under load. It brings real performance benefits while keeping things practical—there’s no need for piston valve reliefs, so installation stays straightforward and budget-friendly. Practical Performance Backed by Proven Durability Wagler Performance didn't just build this cam for numbers on paper. It’s designed to handle real-world demands with a profile that supports both reliability and power. This camshaft works seamlessly with the stock valvetrain setup and offers a noticeable bump in torque without pushing you into an aggressive or high-maintenance build. It does require some minor modification to the engine wiring harness, but clear instructions are included to walk you through that step. Whether you're hauling on the highway or just want a little extra punch in your daily driver, this cam offers a well-rounded upgrade that enhances your Duramax without compromising its street manners. Fits: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax