{"product_id":"dfc-diesel-ss590304stausoalb-series-series-speed-of-air-long-block-crate-engine-std-auto-2003-2004-dodge-5-9l-cummins","title":"DFC Diesel SS590304STAUSOALB Street Series Speed of Air Long Block Crate Engine (STD\/Auto) | 2003-2004 Dodge RAM 5.9L Cummins","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBacked by 5-year, 160,000 km warranty\u003c\/li\u003e\n\u003cli\u003eIncludes ARP or OptiTorque head studs\u003c\/li\u003e\n\u003cli\u003eComplete long block with head and gaskets\u003c\/li\u003e\n\u003cli\u003eRemanufactured with all new name-brand parts\u003c\/li\u003e\n\u003cli\u003eBuilt to exceed OEM specifications\u003c\/li\u003e\n\u003cli\u003ePreset rockers and pushrods for easy install\u003c\/li\u003e\n\u003cli\u003eCometic MLS head gasket included standard\u003c\/li\u003e\n\u003cli\u003eGapless Total Seal piston rings installed\u003c\/li\u003e\n\u003cli\u003eAdvanced CNC machining ensures precision fit\u003c\/li\u003e\n\u003cli\u003eUpgraded gasket sealing in leak-prone zones\u003c\/li\u003e\n\u003cli\u003eImproved piston cooling reduces failure risks\u003c\/li\u003e\n\u003cli\u003eFits 2003–2004 Dodge 5.9L Cummins (Auto\/Std)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eUpgrade Your 5.9 Cummins With Confidence\u003c\/h4\u003e\n\u003cp\u003eIf your 2003-2004 Dodge 5.9L Cummins is showing its age, the DFC Diesel SS590304STAUSOALB Street Series Long Block Crate Engine offers the perfect path to renewed power and reliability. Designed specifically for work trucks, daily drivers, and diesel enthusiasts who demand more than just stock performance, this engine gives you confidence with every mile. It’s built with a full lineup of brand-new OEM or equivalent components, including pistons, rings, gaskets, and bearings, ensuring long-lasting durability from the inside out. Every unit is backed by one of the strongest warranties in the industry, a 5-year, 160,000 km promise that speaks volumes about DFC's build quality. Whether you tow heavy loads, haul gear, or simply need a solid daily driver, this long block delivers reliable performance without the guesswork. Rockers and pushrods come pre-set to factory specs, which means less time adjusting and more time driving. Plus, with head studs from ARP or OptiTorque already installed, this crate engine is built to handle higher cylinder pressures and aggressive driving.\u003c\/p\u003e\n\u003ch4\u003eBuilt With Precision To Outlast The Miles\u003c\/h4\u003e\n\u003cp\u003eThis Street Series long block is not just a rebuild, it’s a full remanufactured upgrade designed to outperform factory specs in all the right ways. At the core is a professionally machined block that’s bored to accept the next oversized piston, delivering better compression consistency and longer engine life. The cylinder head is fully refreshed with all-new valves, guides, hardened seats, and stem seals, plus it’s magnafluxed and resurfaced to meet exacting standards. Total Seal gapless piston rings come standard, improving combustion and reducing blow-by, while a Cometic MLS head gasket adds superior sealing under high load. CNC machining by Rottler equipment guarantees precision in every cut, helping to reduce the chances of future wear or failure. You also get improved piston cooling to guard against injector-related failures, a common issue in older 5.9L Cummins engines. It’s compatible with both standard and automatic transmissions, making it a smart drop-in solution for a wide range of builds. From the components used to the care in assembly, this engine is all about long-term performance and worry-free driving.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e Fits: \u003c\/strong\u003e 2003, 2004 Dodge RAM 5.9L Cummins\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCore return may be required by manufacturer\u003c\/li\u003e\n\u003cli\u003eEngine is designed for 2003-2004 5.9L Cummins\u003c\/li\u003e\n\u003cli\u003eCompatible with both automatic and standard transmissions\u003c\/li\u003e\n\u003cli\u003eStreet Series is intended for daily driving and towing\u003c\/li\u003e\n\u003cli\u003eIncludes upgraded head studs depending on availability\u003c\/li\u003e\n\u003cli\u003eLong block does not include fuel system components\u003c\/li\u003e\n\u003cli\u003eInstallation should be completed by a qualified technician\u003c\/li\u003e\n\u003cli\u003eWarranty coverage is 5 years or 160,000 km\u003c\/li\u003e\n\u003cli\u003eEngine includes all new internal wear components\u003c\/li\u003e\n\u003cli\u003eBuilt using advanced Rottler CNC machining equipment\u003c\/li\u003e\n\u003c\/ul\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;\"\u003e\u003cstrong data-end=\"952\" data-start=\"935\"\u003eStreet Series\u003c\/strong\u003e:\u003c\/span\u003e\u003cstrong\u003e Ideal for daily driving, light work, and diesel enthusiasts. Focuses on reliability upgrades over stock, with head stud and sealing improvements.\u003c\/strong\u003e\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\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\/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\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eStandard\/Auto:\u003c\/span\u003e Compatible with both manual and automatic transmissions. Offers the most flexibility.\u003c\/strong\u003e\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\u003cspan style=\"text-decoration: underline;\"\u003eAuto\u003c\/span\u003e: Built specifically for automatic transmission setups.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DFC Diesel","offers":[{"title":"Default Title","offer_id":68060707258641,"sku":"DDU-SS590304STAUSOALB","price":11171.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/0477\/1089\/files\/Screenshot2025-06-24093007.png?v=1794721866","url":"https:\/\/gautoparts.com\/products\/dfc-diesel-ss590304stausoalb-series-series-speed-of-air-long-block-crate-engine-std-auto-2003-2004-dodge-5-9l-cummins","provider":"Guaranteed Auto Parts","version":"1.0","type":"link"}