{"id":9970436374768,"title":"2004.5-2005 GM 6.6L Duramax OEM Length Replacement High Flow Up-Pipe Kit","handle":"replacement-high-flow-up-pipe-kit-2004-half-2005-gm-6-6l-duramax-oem-length","description":"\u003ch2\u003eReplacement High Flow Up-Pipe Kit\u003c\/h2\u003e\n\u003cp\u003eThe undersized OEM up-pipes are not corrosion resistant and introduce restrictions to the system, impairing turbo charger efficiency and increasing pumping loss. The PPE High-Flow Up-Pipes tackled these issues with a stainless-steel construction and a non-restrictive design. By enlarging the OEM bottle neck and eliminating the tight bends, PPE up-pipes can increase exhaust airflow by up to 46%, allowing for a smooth exhaust process.\u003c\/p\u003e\n\u003cp\u003eThese up-pipes are a direct bolt-on to your OEM exhaust manifolds. Replacement up-pipe gaskets are also included for a hassle-free installation.\u003c\/p\u003e","published_at":"2026-04-04T18:41:46-07:00","created_at":"2026-04-04T18:41:46-07:00","vendor":"Pacific Performance Engineering","type":"","tags":["01 LB7 CA 116120204","02-04 LB7 CA 116120405","11-16 LML 116122000","116120000 01-04 LB7 FED","17-21 L5P 116122000","2004-chevrolet-silverado-2500-hd-lly-8-cyl-6-6-liter-esr1301384","2004-chevrolet-silverado-2500hd-lly-8-cyl-6-6-liter-turbo-esr7824846","2004-gmc-sierra-2500hd-lly-8-cyl-6-6-liter-turbo-esr5894005","2004-gmc-sierra-3500hd-lly-8-cyl-6-6-liter-turbo-esr7076585","2005-chevrolet-silverado-2500hd-8-cyl-6-6-liter-turbo-esi8079105","2005-chevrolet-silverado-3500hd-8-cyl-6-6-liter-turbo-esi9612207","2005-gmc-sierra-2500hd-8-cyl-6-6-liter-turbo-esi9745976","2005-gmc-sierra-3500hd-8-cyl-6-6-liter-turbo-esi6494594","GM","LLY 116120607","LLY\/LBZ 116120710","LMM 116121115","Manifolds and Up-Pipes"],"price":49999,"price_min":49999,"price_max":49999,"available":true,"price_varies":false,"compare_at_price":0,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":49501515022576,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"116120405","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"2004.5-2005 GM 6.6L Duramax OEM Length Replacement High Flow Up-Pipe Kit","public_title":null,"options":["Default Title"],"price":49999,"weight":5806,"compare_at_price":0,"inventory_quantity":0,"inventory_management":null,"inventory_policy":"deny","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/www.hitechclassics.com\/cdn\/shop\/files\/2004.5-2005-GM-6.6L-Duramax-OEM-Length-Replacement-High-Flow-Up-Pipes-Pacific-Performance-Engineering-142880659.jpg?v=1775353308","\/\/www.hitechclassics.com\/cdn\/shop\/files\/2004.5-2005-GM-6.6L-Duramax-OEM-Length-Replacement-High-Flow-Up-Pipes-Pacific-Performance-Engineering-142881383.jpg?v=1775353308"],"featured_image":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2004.5-2005-GM-6.6L-Duramax-OEM-Length-Replacement-High-Flow-Up-Pipes-Pacific-Performance-Engineering-142880659.jpg?v=1775353308","options":["Title"],"media":[{"alt":null,"id":44161595506928,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2004.5-2005-GM-6.6L-Duramax-OEM-Length-Replacement-High-Flow-Up-Pipes-Pacific-Performance-Engineering-142880659.jpg?v=1775353308"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2004.5-2005-GM-6.6L-Duramax-OEM-Length-Replacement-High-Flow-Up-Pipes-Pacific-Performance-Engineering-142880659.jpg?v=1775353308","width":1200},{"alt":null,"id":44161595539696,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2004.5-2005-GM-6.6L-Duramax-OEM-Length-Replacement-High-Flow-Up-Pipes-Pacific-Performance-Engineering-142881383.jpg?v=1775353308"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2004.5-2005-GM-6.6L-Duramax-OEM-Length-Replacement-High-Flow-Up-Pipes-Pacific-Performance-Engineering-142881383.jpg?v=1775353308","width":1200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch2\u003eReplacement High Flow Up-Pipe Kit\u003c\/h2\u003e\n\u003cp\u003eThe undersized OEM up-pipes are not corrosion resistant and introduce restrictions to the system, impairing turbo charger efficiency and increasing pumping loss. The PPE High-Flow Up-Pipes tackled these issues with a stainless-steel construction and a non-restrictive design. By enlarging the OEM bottle neck and eliminating the tight bends, PPE up-pipes can increase exhaust airflow by up to 46%, allowing for a smooth exhaust process.\u003c\/p\u003e\n\u003cp\u003eThese up-pipes are a direct bolt-on to your OEM exhaust manifolds. Replacement up-pipe gaskets are also included for a hassle-free installation.\u003c\/p\u003e"}