How to use: This EGR block off kit is designed for 2011 - 2019 Ford Super Duty with 6.7L Powerstroke engines. First, you'll need to remove the factory exhaust pipe from the exhaust manifold and EGR cooler. Then, install the EGR Cooler Inlet Block Off Plate and the Exhaust Manifold Block Off Plate. The kit can accept an aftermarket 1/8' NPT EGT Probe, and there's an adapter for the OEM sensor. Note that custom tuning is required. Also, this product is for off - road and competition use only. Maintenance advice: The EGR Cooler Inlet Block Off Plate, made of anodized 6061 T6 Aluminum, is protected against scratches and fluid spills. But still, try to keep it clean. The Exhaust Manifold Block Off Plate, made of T304 Stainless Steel, resists rust. Check the stainless - steel hardware regularly to make sure everything is tightened properly.