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Doctor Diesel USA Heavy Duty Up Pipe & Gaskets Kit For 2001-2016 GMC Chevy Duramax Product Name: Doctor Diesel USA Heavy Duty Up Pipe & Gaskets Kit For 2001-2016 GMC Chevy Duramax Manufacturer: Doctor Diesel USA Manufacturer Part #: DD-484-57-127 Fitment Notes: 2001-2016 6.6L Duramax Diesel Introducing Doctor Diesel's new performance stainless steel up pipes for the 2001-2016 GM 6.6L Duramax trucks. Designed to reduce EGTs, lower drive pressure, and speed up turbo spool-up, while ensuring reliab...

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