Edelbrock part #15671 is a Supplemental Fuel Pump Kit is required for GM trucks and SUV's utilizing #1567 Edelbrock Supercharger Systems. Locate your Vehicle Identification Number (VIN). Verify if your vehicle requires a supplemental fuel system upgrade. If digit 8 of your VIN (Engine Type) is represented by an 8 or Y, your vehicle will require a supplemental fuel system. Now identify what Body Type your vehicle is by verifying VIN digit 7. Vehicles with a 3 will use the short wheel base kit #15671. This system is not needed and will not work on Flex Fuel models as Flex Fuel vehicles come standard with adequate fuel systems.

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