{"product_id":"5-9-cummins-long-block","title":"5.9 Cummins Long Block","description":"The D\u0026amp;J Precision Machine Performance Series 5.9 Cummins Long Block is engineered to deliver unparalleled performance and reliability for high-powered Cummins engines. D\u0026amp;J Precision Machine is recognized as a leader in the Cummins performance industry.\n\nThis long block comes fully assembled from the oil pan to the rocker box, featuring D\u0026amp;J's X-Beam Stock Length Billet Rods and a Stage 2 High-Performance Cylinder Head. It is custom-built using premium components from Cummins, Mahle Clevite, and ARP, and is rated to handle up to 1200 hp, making it ideal for demanding, high-performance applications.\n\nThe engine undergoes a rigorous build process, including comprehensive inspection (disassembly, crack-checking, blasting, cleaning), precision CNC machining (boring, line boring, surfacing, girdle and stud machining, torque plate honing), and fire ring grooves cut into the cylinder head and block, paired with custom ARP 9\/16\" head studs for a superior seal. The Stage 2 Performance Cylinder Head features heavy-duty seats, 5-axis CNC porting, and is hand-lapped and pressure-checked.\n\nKey build components include D\u0026amp;J X-Beam Billet Rods, OEM Cummins Pistons, D\u0026amp;J HD Girdle with ARP Main Studs, D\u0026amp;J ARP Head Studs, fire-ring sealing, D\u0026amp;J HD Pushrods, the D\u0026amp;J 250 CFM Stage 2 High-Performance Cylinder Head, a performance cast cam, new OEM tappets, oil cooler, oil pump, crankshaft seals, and billet soft plugs. Optional upgrades such as billet valve covers and timing covers are also available.","brand":"D\u0026J Precision","offers":[{"title":"Default Title","offer_id":52687706325304,"sku":"DJPLB100017x","price":20348.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/664704429.png?v=1784886387","url":"https:\/\/store.motormia.co\/products\/5-9-cummins-long-block","provider":"MOTORMIA","version":"1.0","type":"link"}