{"product_id":"dfc-diesel-th5904507stausoalb-tow-haul-series-standard-auto-speed-of-air-long-block-2004-5-2007-5-9-dodge-cummins","title":"DFC Diesel TH5904507AUSOALB Tow\/Haul Series Auto Speed Of Air Long Block | 2004.5-2007 Dodge RAM 5.9L Cummins","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt for towing and heavy-duty hauling\u003c\/li\u003e\n\u003cli\u003eSupports performance builds up to 700 HP\u003c\/li\u003e\n\u003cli\u003eIncludes ARP or OptiTorque head studs\u003c\/li\u003e\n\u003cli\u003eCometic multi-layer steel head gasket\u003c\/li\u003e\n\u003cli\u003eStage 3 camshaft for added power\u003c\/li\u003e\n\u003cli\u003eHeavy-duty Manton push rods included\u003c\/li\u003e\n\u003cli\u003eUpgraded 60lb or 103lb valve springs\u003c\/li\u003e\n\u003cli\u003eTotal Seal gapless piston rings\u003c\/li\u003e\n\u003cli\u003eCeramic coated piston crowns\u003c\/li\u003e\n\u003cli\u003eDry film piston skirt coating\u003c\/li\u003e\n\u003cli\u003e5-year, 160,000 km limited warranty\u003c\/li\u003e\n\u003cli\u003eProfessionally machined to factory specs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTake On Heavy Loads Without Breaking A Sweat\u003c\/h4\u003e\n\u003cp\u003eWhen you’re pulling weight day in and day out, you need an engine that won’t flinch under pressure. The DFC Diesel Tow\/Haul Series Long Block for the 2004.5-2007 5.9L Dodge Cummins is purpose-built for serious towing and hauling without sacrificing durability. Designed for work trucks and performance-focused builds, this long block handles up to 700 horsepower thanks to a host of internal upgrades. It features Total Seal gapless piston rings for maximum compression and power, while ceramic-coated piston crowns help manage heat during heavy pulls. Whether you're towing a loaded trailer across the mountains or stacking miles on the job site, this engine delivers the muscle and reliability you need. With heavy-duty valve springs and a Stage 3 camshaft, throttle response stays crisp even under load. And it’s all backed by a 5-year, 160,000 km warranty that gives you real peace of mind when the work gets tough.\u003c\/p\u003e\n\u003ch4\u003eEngineered For Longevity And Built To Perform\u003c\/h4\u003e\n\u003cp\u003eThis isn’t just a rebuilt motor, it’s a precision-crafted long block designed to exceed OEM expectations. The DFC Diesel Tow\/Haul Series is CNC-machined using Rottler equipment to ensure factory-spec tolerances from top to bottom. The assembly includes a fully machined block with over-sized pistons, new OEM or equivalent gaskets, and a reconditioned cylinder head featuring all-new valves, guides, and seats. ARP Series 2000 or OptiTorque head studs secure the top end, paired with a Cometic MLS gasket set to prevent head lift under boost. The Stage 3 camshaft and Manton HD push rods ensure valvetrain stability across the rev range, especially when running heavy or under increased cylinder pressure. Ceramic coatings on the pistons and dry film lubrication on the skirts reduce friction and extend lifespan under high-stress conditions. With components that balance strength and performance, this long block is built to run hard and run long.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e Fits: \u003c\/strong\u003e 2004.5, 2005, 2006, 2007 Dodge RAM 5.9L Cummins\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt specifically for 2004.5-2007 5.9L Dodge Cummins engines\u003c\/li\u003e\n\u003cli\u003eDesigned for trucks requiring up to 700 HP output\u003c\/li\u003e\n\u003cli\u003eIntended for heavy towing and performance applications\u003c\/li\u003e\n\u003cli\u003eIncludes both short block and reconditioned cylinder head\u003c\/li\u003e\n\u003cli\u003eAll components are remanufactured to exceed OEM specs\u003c\/li\u003e\n\u003cli\u003eUses all new name-brand internal parts, not refurbished\u003c\/li\u003e\n\u003cli\u003eComes with a 5-year or 160,000 km limited warranty\u003c\/li\u003e\n\u003cli\u003eHead studs brand (ARP or OptiTorque) depends on availability\u003c\/li\u003e\n\u003cli\u003eValve spring weight varies by engine model year\u003c\/li\u003e\n\u003cli\u003eRequires proper break-in and installation procedures\u003c\/li\u003e\n\u003cli\u003eBuilt with gapless piston rings for better compression\u003c\/li\u003e\n\u003cli\u003eMachined using Rottler CNC for maximum precision\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"931\" data-start=\"884\"\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3 data-end=\"931\" data-start=\"884\"\u003eStreet Series vs Tow\/Haul vs Tow\/Haul HD\u003c\/h3\u003e\n\u003cul data-end=\"1398\" data-start=\"933\"\u003e\n\u003cli data-end=\"1099\" data-start=\"933\"\u003e\n\u003cp data-end=\"1099\" data-start=\"935\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eStreet Series:\u003c\/span\u003e Ideal for daily driving, light work, and diesel enthusiasts. Focuses on reliability upgrades over stock, with head stud and sealing improvements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1240\" data-start=\"1100\"\u003e\n\u003cp data-end=\"1240\" data-start=\"1102\"\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eTow\/Haul Series:\u003c\/span\u003e All Street upgrades plus added performance parts for higher load and towing power. Supports builds up to ~700 HP.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1398\" data-start=\"1241\"\u003e\n\u003cp data-end=\"1398\" data-start=\"1243\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eTow\/Haul HD Series:\u003c\/span\u003e The most robust option. Adds heavy-duty internals like Wagler rods and a balanced rotating assembly for 800+ HP capability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"1445\" data-start=\"1405\"\u003eStandard\/Auto vs Standard vs Auto\u003c\/h3\u003e\n\u003cul data-end=\"1706\" data-start=\"1447\"\u003e\n\u003cli data-end=\"1557\" data-start=\"1447\"\u003e\n\u003cp data-end=\"1557\" data-start=\"1449\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eStandard\/Auto:\u003c\/span\u003e Compatible with both manual and automatic transmissions. Offers the most flexibility.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1636\" data-start=\"1558\"\u003e\n\u003cp data-end=\"1636\" data-start=\"1560\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eStandard:\u003c\/span\u003e Built specifically for manual transmission configurations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1706\" data-start=\"1637\"\u003e\n\u003cp data-end=\"1706\" data-start=\"1639\"\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eAuto\u003c\/span\u003e: Built specifically for automatic transmission setups.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DFC Diesel","offers":[{"title":"Default Title","offer_id":68060707062033,"sku":"DDU-TH5904507AUSOALB","price":15394.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/0477\/1089\/files\/0034631_dfc-long-block-engine-towhaul-series-dodge-59l-cummins-2003-2004_fbd85005-6888-4d53-b915-9d0216bc25f3.webp?v=1794721858","url":"https:\/\/gautoparts.com\/products\/dfc-diesel-th5904507stausoalb-tow-haul-series-standard-auto-speed-of-air-long-block-2004-5-2007-5-9-dodge-cummins","provider":"Guaranteed Auto Parts","version":"1.0","type":"link"}