{"product_id":"6-6l-duramax-lb7-lly-exhaust-manifold-and-up-pipe-set","title":"6.6L Duramax LB7\/LLY Exhaust Manifold and Up-Pipe Set","description":"The PPE Exhaust Manifolds and Up-Pipes are engineered to replace factory exhaust components in 2002-2004 GM 6.6L Duramax 2500HD\/3500HD trucks. This high-flow system addresses restrictive factory bottlenecks, resulting in lower exhaust gas temperatures (EGTs), reduced drive pressure, and improved turbocharger spool-up for better overall engine efficiency under load.\n\nThe exhaust manifolds are constructed from cast high-sil moly, a material specifically chosen for its ability to resist warping and cracking under intense heat cycles. The included up-pipes are fabricated from 304 stainless steel and feature internally sleeved bellows, which provide necessary flexibility to withstand thermal expansion and vibration fatigue during heavy-duty operation.\n\nDesigned as a direct bolt-on replacement, this kit installs into the existing factory layout without requiring fabrication or cutting. It is specifically intended for 2002-2004 6.6L Duramax diesel engines. This kit enhances power and torque output while improving fuel economy, making it an ideal upgrade for performance and towing applications.","brand":"PPE","offers":[{"title":"Default Title","offer_id":52663321035064,"sku":"116111200","price":1121.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687527790.jpg?v=1784325926","url":"https:\/\/store.motormia.co\/products\/6-6l-duramax-lb7-lly-exhaust-manifold-and-up-pipe-set","provider":"MOTORMIA","version":"1.0","type":"link"}