{"id":9970438471920,"title":"2003-2004 GM 6.6L Duramax Stage6 Complete Ready-to-Install Allison Transmission 4WD","handle":"2003-2004-gm-6-6l-duramax-stage6-complete-ready-to-install-allison-transmission","description":"\u003cp\u003eNow available as a complete ready-to-install transmission. PPE experts with 35+ years of experience upgrade the Allison transmissions with the latest performance parts to ensure a transmission built to suit your needs. Suitable for daily use performance or race track.\u003c\/p\u003e\n\u003cp\u003eFully customizable, there are several upgrades to consider. If you need assistance please call and ask to speak with an advisor. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE: Transmission Core \u0026amp; Transport Case core charge must still be added\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE: Items shipped through freight transit do not qualify for free shipping\u003c\/strong\u003e\u003c\/p\u003e","published_at":"2026-04-04T18:43:00-07:00","created_at":"2026-04-04T18:43:00-07:00","vendor":"PPE Exclusives","type":"","tags":["2003-chevrolet-silverado-2500hd-8-cyl-6-6-liter-turbo-esi6051154","2003-chevrolet-silverado-3500hd-8-cyl-6-6-liter-turbo-esi4501871","2003-gmc-sierra-2500hd-8-cyl-6-6-liter-turbo-esi2470648","2003-gmc-sierra-3500hd-8-cyl-6-6-liter-turbo-esi6095730","2004-chevrolet-silverado-2500hd-8-cyl-6-6-liter-turbo-esi8053781","2004-chevrolet-silverado-3500hd-8-cyl-6-6-liter-turbo-esi4286045","2004-gmc-sierra-2500hd-8-cyl-6-6-liter-turbo-esi4127483","2004-gmc-sierra-3500hd-8-cyl-6-6-liter-turbo-esi7379111","GM","Transmission","Transmission Upgrades"],"price":499999,"price_min":499999,"price_max":499999,"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":49501529932016,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"128136201","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"2003-2004 GM 6.6L Duramax Stage6 Complete Ready-to-Install Allison Transmission 4WD","public_title":null,"options":["Default Title"],"price":499999,"weight":149685,"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\/2003-2004-GM-6.6L-Duramax-Stage6-Complete-Ready-to-Install-Allison-Transmission-PPE-Exclusives-143857677.jpg?v=1775353382"],"featured_image":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2003-2004-GM-6.6L-Duramax-Stage6-Complete-Ready-to-Install-Allison-Transmission-PPE-Exclusives-143857677.jpg?v=1775353382","options":["Title"],"media":[{"alt":null,"id":44161613758704,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1500,"width":1500,"src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2003-2004-GM-6.6L-Duramax-Stage6-Complete-Ready-to-Install-Allison-Transmission-PPE-Exclusives-143857677.jpg?v=1775353382"},"aspect_ratio":1.0,"height":1500,"media_type":"image","src":"\/\/www.hitechclassics.com\/cdn\/shop\/files\/2003-2004-GM-6.6L-Duramax-Stage6-Complete-Ready-to-Install-Allison-Transmission-PPE-Exclusives-143857677.jpg?v=1775353382","width":1500}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eNow available as a complete ready-to-install transmission. PPE experts with 35+ years of experience upgrade the Allison transmissions with the latest performance parts to ensure a transmission built to suit your needs. Suitable for daily use performance or race track.\u003c\/p\u003e\n\u003cp\u003eFully customizable, there are several upgrades to consider. If you need assistance please call and ask to speak with an advisor. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE: Transmission Core \u0026amp; Transport Case core charge must still be added\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE: Items shipped through freight transit do not qualify for free shipping\u003c\/strong\u003e\u003c\/p\u003e"}