{"product_id":"black-4-0-downpipe-back-exhaust-for-2004-5-2007-dodge-ram-2500-3500-5-9l-diesel","title":"Black 4.0\" Downpipe-Back Exhaust for 2004.5-2007 Dodge Ram 2500\/3500 5.9L Diesel | SPELAB","description":"\u003cp\u003e---tab Description---\u003c\/p\u003e\n\u003ch2\u003eBlack Dodge Ram 5.9 Diesel 4\" Exhaust Overview\u003c\/h2\u003e\n\u003cp\u003eCompatible with 2004.5-2007 Dodge Ram 5.9L diesel models, our 4-inch black downpipe-back DPF delete exhaust removes the factory exhaust’s restrictive design. It effectively increases horsepower and torque while sharpening throttle feedback, alongside a rich, aggressive exhaust tone. Constructed from premium 409 stainless steel with black powder coating and titanium heat wrap, this exhaust delivers outstanding heat insulation and anti-corrosion properties. It is an excellent upgrade for tuned trucks, towing work and off-road use, upgrading overall vehicle performance, fuel economy and undercarriage visual appeal.\u003c\/p\u003e\n\u003ch2\u003eBlack 4\" Downpipe-Back Exhaust Key Features\u003c\/h2\u003e\n\u003cp\u003eThis SPELAB 4.0-inch downpipe-back exhaust replaces the original restrictive exhaust system to maximize engine operating efficiency. It helps elevate fuel mileage, reduce daily fuel consumption costs, and delivers steady, reliable performance whether you’re hauling heavy loads or exploring rugged off-road terrain.\u003c\/p\u003e\n\u003ch3\u003eBlack Powder Coating for Heat and Corrosion Protection\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Temperature Protection\u003c\/strong\u003e: Adopting professional-level coating technology, it resists extreme exhaust heat, effectively avoiding surface discoloration and thermal damage to sustain stable long-term performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Corrosion Resistance\u003c\/strong\u003e: Forms a solid protective layer to defend against road salt, moisture, mud and various off-road contaminants, maintaining excellent durability in all harsh working conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Aesthetics:\u003c\/strong\u003e Sleek matte black finish transforms your truck’s undercarriage, giving it a stealthy, performance-focused look that matches your Duramax’s power..\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBlack Titanium Heat Wrap for Head Pipe Heat Control\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0174\/0609\/9556\/files\/listing03_fee8628d-8d83-475a-9d54-cf247a2ff5a3.webp?v=1782097125\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Underbody Heat Radiation:\u003c\/strong\u003e Blocks excessive high-temperature heat to protect delicate hoses, circuit wiring, fuel lines and core engine components, prolonging part service life and avoiding heat-caused mechanical faults.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtreme Temperature Endurance:\u003c\/strong\u003e Features a high temperature resistance rating of over 1000°C (1832°F), perfectly suited for modified 5.9L diesel engines, heavy towing tasks and high-intensity off-road driving scenarios.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Exhaust Flow:\u003c\/strong\u003e Dispels heat soak phenomenon, accelerates exhaust gas discharge, and optimizes engine efficiency, bringing stable power improvement and smoother overall vehicle operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e⚠ Off-Road Use Only – DPF removal is illegal for on-road vehicles in most regions. For competition\/racing use only.\u003c\/p\u003e\n\u003ch2\u003eDownpipe-Back Exhaust Specification\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial: \u003c\/strong\u003ePremium 409 Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish: \u003c\/strong\u003eHigh-Temperature Black Powder Coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Management: \u003c\/strong\u003eBlack Titanium Heat Wrap on Head Pipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type: \u003c\/strong\u003eDownpipe-Back DPF Delete\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication: \u003c\/strong\u003eDesigned for Downpipe-back systems, ideal for high-temperature environments, towing, heavy loads, performance-tuned vehicles, and off-road use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability: \u003c\/strong\u003eBuilt to enhance exhaust system robustness and impact resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\u003cp\u003eInstall takes about 1hr with basic hand tools done on the ground of your driveway or garage. Quicker if you have automotive style lift. Cutting may be be required to fit shorter wheelbase bed\/cab configurations. Clamps, hangers and hardware are included. You may have to re-use some factory hardware.\u003c\/p\u003e\n\u003ch3\u003eTuner Required for DPF Delete Exhaust Installation\u003c\/h3\u003e\n\u003cp\u003eRemoval of the DPF, CAT, SCR, and\/or DOC involves removing and eliminating emission related sensors. A DPF delete capable tuner is required to prevent any check engine light or diagnostic trouble codes from setting.\u003c\/p\u003e\n\u003cp\u003e---tab Fitment---\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eDodge Ram 5.9 Diesel Downpipe-Back Exhaust Fitment\u003c\/h2\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFor 2004.5, 2005, 2006, 2007 Dodge Ram 2500\/3500 5.9 Diesel. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003e2004.5+ models\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ehave a 4” turbo elbow outlet, making 4” or 5” systems direct-fit.\u003c\/li\u003e\n\u003cli class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003e2003–early 2004 models\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erequire an adapter (3.5” downpipe).\u003c\/li\u003e\n\u003cli class=\"ds-markdown-paragraph\"\u003eIf you need 4.0\" Downpipe-Back, you can click \u003ca href=\"https:\/\/www.spelabautoparts.com\/products\/4-5-2004-5-2007-5-9l-cummins-dpf-delete-race-pipe-dodge-ram-2500-3500-spelab\"\u003e\u003cstrong\u003eHERE\u003c\/strong\u003e\u003c\/a\u003e to purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e---tab Shipping \u0026amp; Returns---\u003c\/p\u003e\n\u003cdiv class=\"policy-container\"\u003e\n\u003cdiv class=\"policy-item\"\u003e\n\u003ch3\u003eFast Shipping Policy\u003c\/h3\u003e\n\u003cp\u003eYour order will be dispatched within \u003cstrong\u003e1-2 business days\u003c\/strong\u003e, and the package will arrive within your order's estimated date. \u003ca href=\"https:\/\/www.spelabautoparts.com\/pages\/shipping-policy\"\u003eClick for Shipping Policy\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"policy-item\"\u003e\n\u003ch3\u003eEasy Return Policy\u003c\/h3\u003e\n\u003cp\u003eEvery order comes with a \u003cstrong\u003e14-day free return\u003c\/strong\u003e, which means you don't have to pay for a return slip. \u003ca href=\"https:\/\/www.spelabautoparts.com\/pages\/refund-policy\"\u003eClick for Return Policy\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SPELAB","offers":[{"title":"Without Exhaust Tip","offer_id":48998281478395,"sku":"SPJN-EXS22-00001003","price":549.0,"currency_code":"USD","in_stock":true},{"title":"With Exhaust Tip","offer_id":48998281511163,"sku":"SPJN-EXS22-00001003-ES08019SP","price":579.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/0609\/9556\/files\/01_6b2edd35-226e-4bb5-9a2c-4f17e83eeb57.webp?v=1782097125","url":"https:\/\/www.spelabautoparts.com\/products\/black-4-0-downpipe-back-exhaust-for-2004-5-2007-dodge-ram-2500-3500-5-9l-diesel","provider":"SPELAB","version":"1.0","type":"link"}