Power Your Haul: The Stage 3 CAT Cylinder Head Truckers Trust for Unyielding Torque and Tough Terrains Dominate the road with the BPS CAT C15/C16/3406E/ACERT Stage 3 Cylinder Head, a brand new powerhouse designed for the grueling demands of heavy-haul trucking. This fully loaded assembly comes complete with high-performance Inconel intake and exhaust valves to withstand extreme conditions, along with springs, cam bearings, and a plug/fitting kit for seamless integration. Crafted from a fresh casting that exceeds OE specifications, it's engineered for superior durability, preventing common failures like cracking under intense heat and pressure. Ready to install straight out of the box with no core needed, this upgrade delivers explosive torque gains, enhanced efficiency, and reduced downtime—perfect for long-distance operators in semis or fleets who need rock-solid reliability without the hassles of returns or exchanges. Key Features Brand New Stage 3 Casting: Fresh, high-strength construction surpasses OE durability, resisting cracks and failures in harsh operating environments for extended service life. Fully Loaded Assembly: Pre-installed with valves, springs, and cam bearings, plus a plug/fitting kit, for quick, hassle-free bolt-on installation—saving truckers time and labor costs Inconel Intake and Exhaust Valves: Advanced alloy valves thrive under extreme heat and stress, ensuring consistent sealing and performance during demanding hauls. Exceeds OE Specifications: Optimized for superior strength and efficiency, promoting better combustion and torque in high-output diesel applications. No Core Required: Eliminate the inconvenience of returning old parts; this is a straightforward new purchase for immediate upgrades without added fees. Stage 3 Upgrade Defined: High-strength casting + Inconel intake AND exhaust valves for extreme heat resistance + optimized coolant flow and reinforced fire deck. Fully assembled, bolt-on ready. No core return required. Designed to handle heavy-hauling or high-horsepower applications. Exceeds OE durability specs. Advanced CGI450 compacted graphite iron: 33% greater creep resistance (reduced creep rate) and 15% higher tensile strength vs. standard gray iron for superior high-temperature durability under heavy loads. BPS proprietary compacted graphite iron casting. CGI casting — compacted graphite iron (CGI450), not standard gray iron Cross References OEM: 2237263 OEM: 2239250 OEM: 4P1599 OEM: 156-7342 OEM: 142-7341 OEM: 4P5050 OEM: 132-9976 OEM: 20R-0409 OEM: 20R-2645 OEM: 1835296 OEM: 1769918 OEM: 1835396