{"product_id":"performance-cylinder-head-stage-1-dodge-ram-5-9l-cummins-03-07-w-o-fire-ring","title":"Performance Cylinder Head (Stage 1) Dodge\/Ram 5.9L Cummins 03-07 (W\/O Fire Ring)","description":"The 2003-2007 5.9 Stage 1 Cummins Performance Cylinder Head is designed to deliver increased airflow and durability without the added cost and complexity of an aftermarket intake. Featuring 105-pound valve springs and a 5-axis CNC port job, this head significantly boosts intake flow from 155 CFM to 220 CFM, improving low-end performance, reducing boost pressure, and lowering EGTs. Built on the foundation of the HP Reman Head, it includes new bronze guides, oversized hardened seats, and a high-performance CNC valve job for enhanced longevity and efficiency. Manufactured by D\u0026amp;J Precision Machine, this cylinder head is a proven upgrade for both stock and performance-driven Cummins builds.","brand":"BD Diesel","offers":[{"title":"Default Title","offer_id":51648141623611,"sku":"BKJX_DJPCH100026","price":5824.3,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/5958\/2011\/files\/DJPCH100026_1024px.jpg?v=1788458653","url":"https:\/\/performancepartscanada.ca\/products\/performance-cylinder-head-stage-1-dodge-ram-5-9l-cummins-03-07-w-o-fire-ring","provider":"Performance Parts Canada","version":"1.0","type":"link"}