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Product Name: Doctor Diesel USA DDP 304 SS Intercooler Pipe & Turbo Horn Upgrade Kit For 2020-2024 Chevy GMC 6.6L Duramax L5P Manufacturer: Doctor Diesel USA Manufacturer Part #: DD-467-447 Fitment Applications: 2020-2024 L5P GM 6.6L Duramax Diesel Doctor Diesel’s massive 3.5in boost tubes are the largest charge air cooler pipes on the market, flowing 680 CFM and 87% more air than stock! Smooth mandrel-bent tubes deliver more air to your engine while reducing boost pressure loss resulting in q...

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