{"product_id":"performance-cylinder-head-stage-1-dodge-ram-5-9l-cummins-03-07-w-fire-ring","title":"Performance Cylinder Head (Stage 1) Dodge\/Ram 5.9L Cummins 03-07 (W\/ Fire Ring)","description":"The 2003-2007 5.9 Stage 1 Cummins Performance Head is engineered for enhanced airflow and performance while maintaining the factory intake plenum for easy installation. Featuring 105-pound valve springs and a 5-axis CNC port job, this head increases intake flow from 155 CFM to 220 CFM, improving low-end power, reducing boost pressure, and lowering EGTs. With hardened valve seats, bronze guides, and a precision CNC valve job, this upgrade optimizes fuel efficiency and horsepower while maintaining OEM fitment. Manufactured by D\u0026amp;J Precision Machine, this head is designed for performance-driven builds and daily-driven reliability.","brand":"BD Diesel","offers":[{"title":"Default Title","offer_id":51648160530747,"sku":"BKJX_DJPCH100027","price":6290.22,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/5958\/2011\/files\/DJPCH100027_1024px.jpg?v=1788459182","url":"https:\/\/performancepartscanada.ca\/products\/performance-cylinder-head-stage-1-dodge-ram-5-9l-cummins-03-07-w-fire-ring","provider":"Performance Parts Canada","version":"1.0","type":"link"}