Do I need a Fuel Pressure Big Line Kit to install a Fuel Pressure Gauge?Updated 2 hours ago
Whether a Fuel Pressure Big Line Kit is required depends on your vehicle and whether you are using the factory or aftermarket fuel system.
Big Line Kits are specifically required for 2007.5–2018 Dodge Ram 6.7L Cummins and 2011–2016 Ford 6.7L Power Stroke applications that still use the factory fuel system.
These kits replace the restrictive factory fuel line between the fuel filter housing and injection pump with a larger 3/8" fuel line, while also providing a dedicated port for installing a Fuel Pressure Sensor.