PDI Big Boss Paccar MX13 Cylinder Head | 2396049 EPA17

All-New PDI CGI Cylinder Head for PACCAR MX-13. Built from Compacted Graphite Iron (CGI) with Inconel intake and exhaust valves for superior heat resistance, strength, and long-term durability in EPA17 engines. Engineered for high cylinder pressures, extended service life, and demanding duty cycles. The PACCAR MX-13 operates under extreme thermal and combustion loads. Traditional gray iron cylinder heads are pushed to their limits under modern emissions-era operating conditions. PDI’s CGI MX-13 Cylinder Head is engineered to exceed those limits. By combining Compacted Graphite Iron metallurgy with Inconel intake and exhaust valves, this cylinder head delivers improved resistance to cracking, valve failure, and heat-related distortion. It is ideal for heavy-haul, vocational, and performance-focused rebuilds where durability and uptime matter most. Key Features and Benefits Compacted Graphite Iron (CGI) Casting Stronger than traditional gray iron with increased fatigue resistance Designed to handle higher cylinder pressures without cracking Improved thermal stability under sustained exhaust gas temperatures Inconel Intake and Exhaust Valves Exceptional resistance to heat and corrosion Designed for modern emissions-era exhaust temperatures Extended valve life in high-load and severe-duty applications Precision Machined for Exact Fit OEM-spec oil, coolant, and combustion passages Designed for drop-in compatibility on PACCAR MX-13 platforms PDI Quality Control Standards Multi-stage inspection process Flatness, valve seat concentricity, and pressure testing performed prior to release Applications Paccar MX13 EPA17 Engines OEM Cross Reference 2125763, 2184940, 2188417, 2396049, 2125762, 2184939, 2188416, 2396048