Crafted from solid billet aluminum for durability and precise fitment. Improve the reliability and fuel performance of the Duramax engine. Replaces unreliable CP4 with proven CP3 platform, avoiding $10k+ repair bills. Exclusive molded lines for OEM-quality fit and cleaner, leak-free engine bay. Includes high-flow fittings and valley feed line supporting high-performance aftermarket lift pumps. Includes all necessary brackets and lines for a seamless swap. (Note: CP3 pump and tuning required separately). Provides robust fueling architecture for 2011-2016 LML Duramax, perfect for towing and heavy-duty.