{"id":9970437914864,"title":"2006-2010 GM 6.6L Duramax 304 Stainless Steel Engine Coolant Return Pipe","handle":"2006-2010-gm-6-6l-duramax-304-stainless-steel-engine-coolant-return-pipe","description":"\u003cp\u003eSpecifically designed for use in conjunction with the factory thermostat housing. 304 stainless steel construction prevents corrosion compared with OEM mild steel pipe which is prone to rusting and eventually leaking. Allows for installation of factory turbo coolant return thermostat. Also great for marine applications.\u003c\/p\u003e","published_at":"2026-04-04T18:42:39-07:00","created_at":"2026-04-04T18:42:39-07:00","vendor":"Pacific Performance Engineering","type":"","tags":["2006-chevrolet-silverado-2500hd-8-cyl-6-6-liter-turbo-esi5266480","2006-chevrolet-silverado-3500hd-8-cyl-6-6-liter-turbo-esi7547394","2006-gmc-sierra-2500hd-8-cyl-6-6-liter-turbo-esi9378369","2006-gmc-sierra-3500hd-8-cyl-6-6-liter-turbo-esi4367050","2007-chevrolet-silverado-2500hd-8-cyl-6-6-liter-turbo-esi4956196","2007-chevrolet-silverado-2500hd-classic-8-cyl-6-6-liter-turbo-esi5695775","2007-chevrolet-silverado-3500-classic-8-cyl-6-6-liter-turbo-esi7760659","2007-chevrolet-silverado-3500hd-8-cyl-6-6-liter-turbo-esi7529828","2007-gmc-sierra-2500hd-8-cyl-6-6-liter-turbo-esi6749266","2007-gmc-sierra-2500hd-classic-8-cyl-6-6-liter-turbo-esi6166156","2007-gmc-sierra-3500-classic-8-cyl-6-6-liter-turbo-esi9783832","2007-gmc-sierra-3500hd-8-cyl-6-6-liter-turbo-esi2650510","2008-chevrolet-silverado-2500hd-8-cyl-6-6-liter-turbo-esi9645645","2008-chevrolet-silverado-3500hd-8-cyl-6-6-liter-turbo-esi4987957","2008-gmc-sierra-2500hd-8-cyl-6-6-liter-turbo-esi8434654","2008-gmc-sierra-3500hd-8-cyl-6-6-liter-turbo-esi2209519","2009-chevrolet-silverado-2500hd-8-cyl-6-6-liter-turbo-esi3942607","2009-chevrolet-silverado-3500hd-8-cyl-6-6-liter-turbo-esi7082592","2009-gmc-sierra-2500hd-8-cyl-6-6-liter-turbo-esi9736247","2009-gmc-sierra-3500hd-8-cyl-6-6-liter-turbo-esi2246196","2010-chevrolet-silverado-2500hd-8-cyl-6-6-liter-turbo-esi1097900","2010-chevrolet-silverado-3500hd-8-cyl-6-6-liter-turbo-esi8064240","2010-gmc-sierra-2500hd-8-cyl-6-6-liter-turbo-esi5606102","2010-gmc-sierra-3500hd-8-cyl-6-6-liter-turbo-esi2762403","Coolant System","GM"],"price":9999,"price_min":9999,"price_max":10999,"available":true,"price_varies":true,"compare_at_price":0,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":49501525672176,"title":"Raw","option1":"Raw","option2":null,"option3":null,"sku":"119001200","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"2006-2010 GM 6.6L Duramax 304 Stainless Steel Engine Coolant Return Pipe - Raw","public_title":"Raw","options":["Raw"],"price":9999,"weight":1451,"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}},{"id":49501525704944,"title":"Polished","option1":"Polished","option2":null,"option3":null,"sku":"119001230","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"2006-2010 GM 6.6L Duramax 304 Stainless Steel Engine Coolant Return Pipe - Polished","public_title":"Polished","options":["Polished"],"price":10999,"weight":14742,"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\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795129.jpg?v=1775353362","\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795354.jpg?v=1775353362","\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795476.jpg?v=1775353362","\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795550.jpg?v=1775353362","\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795656.jpg?v=1775353362","\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795738.jpg?v=1775353362","\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795867.jpg?v=1775353362","\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795941.jpg?v=1775353362","\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143796039.jpg?v=1775353362","\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143796168.jpg?v=1775353362","\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143796276.jpg?v=1775353362","\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795292.jpg?v=1775353362"],"featured_image":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795129.jpg?v=1775353362","options":["Finish"],"media":[{"alt":null,"id":44161608351984,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795129.jpg?v=1775353362"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795129.jpg?v=1775353362","width":1200},{"alt":null,"id":44161608384752,"position":2,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795354.jpg?v=1775353362"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795354.jpg?v=1775353362","width":1200},{"alt":null,"id":44161608417520,"position":3,"preview_image":{"aspect_ratio":1.0,"height":1500,"width":1500,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795476.jpg?v=1775353362"},"aspect_ratio":1.0,"height":1500,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795476.jpg?v=1775353362","width":1500},{"alt":null,"id":44161608450288,"position":4,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795550.jpg?v=1775353362"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795550.jpg?v=1775353362","width":1200},{"alt":null,"id":44161608483056,"position":5,"preview_image":{"aspect_ratio":1.0,"height":1500,"width":1500,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795656.jpg?v=1775353362"},"aspect_ratio":1.0,"height":1500,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795656.jpg?v=1775353362","width":1500},{"alt":null,"id":44161608515824,"position":6,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795738.jpg?v=1775353362"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795738.jpg?v=1775353362","width":1200},{"alt":null,"id":44161608548592,"position":7,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795867.jpg?v=1775353362"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795867.jpg?v=1775353362","width":1200},{"alt":null,"id":44161608581360,"position":8,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795941.jpg?v=1775353362"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795941.jpg?v=1775353362","width":1200},{"alt":null,"id":44161608614128,"position":9,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143796039.jpg?v=1775353362"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143796039.jpg?v=1775353362","width":1200},{"alt":null,"id":44161608646896,"position":10,"preview_image":{"aspect_ratio":1.0,"height":1500,"width":1500,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143796168.jpg?v=1775353362"},"aspect_ratio":1.0,"height":1500,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143796168.jpg?v=1775353362","width":1500},{"alt":null,"id":44161608679664,"position":11,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143796276.jpg?v=1775353362"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143796276.jpg?v=1775353362","width":1200},{"alt":null,"id":44161608712432,"position":12,"preview_image":{"aspect_ratio":1.0,"height":1200,"width":1200,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795292.jpg?v=1775353362"},"aspect_ratio":1.0,"height":1200,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2006-2010-GM-6.6L-Duramax-304-Stainless-Steel-Engine-Coolant-Return-Pipe-Pacific-Performance-Engineering-143795292.jpg?v=1775353362","width":1200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eSpecifically designed for use in conjunction with the factory thermostat housing. 304 stainless steel construction prevents corrosion compared with OEM mild steel pipe which is prone to rusting and eventually leaking. Allows for installation of factory turbo coolant return thermostat. Also great for marine applications.\u003c\/p\u003e"}