2019-2022 GM 1500 3.0L Duramax Performance Silicone Intake and Intercooler Hose KitPPE's Silicone Hoses are resistant to fuel, oil, and chemicals while also being UV and Ozone resistant. PPE 6mm Performance Silicone Hoses are reinforced with 5 plies of Nomex fibers which allows them to handle 200+ psi burst pressure rating. The Fluorocarbon lining offers better lubricity (slippery and resistant to chemicals). This kit also features stainless steel worm drive clamps for a secure fit. An excellent upgrade for your truck whether it's