{"product_id":"3-5-downpipe-exhaust-for-2017-2025-l5p-6-6l-duramax-diesel-spelab","title":"3.5'' Downpipe Exhaust For 2017-2025 L5P 6.6L Duramax Diesel | SPELAB","description":"\u003cp\u003e---tab Description---\u003c\/p\u003e\n\u003cp\u003eThe downpipe on your turbocharged vehicle is directing the exhaust gases out of the turbine housing into the exhaust system. An aftermarket downpipe will typically be larger in diameter and either uses a high-flowing catalytic converter or remove the catalytic converter altogether.\u003c\/p\u003e\n\u003cp\u003eBy removing the factory downpipe and replacing it with a high flowing unit you are allowing the turbo to more efficiently move gases away from the turbine which creates more power. Since the factory restrictions are now gone you can increase the boost on the vehicle as the factory downpipe is a choking point for performance.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003e3.5-Inch Large Diameter Design:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFeatures a larger internal diameter than the stock pipe for dramatically increased exhaust flow, reducing turbo lag and enhancing throttle response.\u003c\/li\u003e\n\u003cli class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003eTurbo Efficiency Optimization:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAccelerates exhaust gas exit from the turbine housing, minimizing backpressure to allow the turbo to spin faster and produce more boost and power.\u003c\/li\u003e\n\u003cli class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003eEliminates Factory Restriction:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDirectly replaces the restrictive OEM downpipe, solving the exhaust choking point and providing the essential foundation for further performance mods (e.g., tuning, increasing boost levels).\u003c\/li\u003e\n\u003cli class=\"ds-markdown-paragraph\"\u003e\n\u003cstrong\u003ePrecision Fit and Durability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eConstructed from high-quality stainless steel for superior corrosion resistance and long-term reliability under extreme heat.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli\u003eApplication:  Downpipe Exhaust\u003c\/li\u003e\n\u003cli\u003eMaterial: Stainless Steel\u003c\/li\u003e\n\u003cli\u003eSurface: Mirror Polish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e---tab Fitment---\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e2017-2025 Chevrolet Silverado \u0026amp; GMC Sierra 2500 \u0026amp; 3500HD 6.6L Duramax\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWill not fit Cab \u0026amp; Chassis trucks.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003ca title=\"3.5'' Downpipe Exhaust For 2017+ L5P 6.6L Duramax Diesel Black| SPELAB-999\" href=\"https:\/\/www.spelabautoparts.com\/products\/3-5-downpipe-exhaust-for-2017-2023-l5p-6-6l-duramax-diesel-black-spelab\"\u003e\u003cspan style=\"color: #00aaff; text-decoration: underline;\"\u003eIf you would like to purchase the black version, please click the link\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\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":"Default Title","offer_id":52623995601208,"sku":"SPES08074","price":228.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1006\/3069\/2152\/files\/00001.webp?v=1783576003","url":"https:\/\/bsdptuning.com\/products\/3-5-downpipe-exhaust-for-2017-2025-l5p-6-6l-duramax-diesel-spelab","provider":"BSDP Tuning","version":"1.0","type":"link"}