Check the listing for details. 2 Inch Open Blend 4500 Intake to 4150 Carburetor Adaptor New Lightweight Config. Condition: New. Listed at 135.52 USD. Product Description 2 Inch open blend adator for 4150 carburetors to fit on 4500 intake manifolds. - This adaptor makes it easy to install a 4150 carburetor on a 4500 intake and get more power out of your engine when your at the track - Fits all applications with 4500 intake manifolds and 4150 carburetors - Dyno tested to improve horsepower, torque, and throttle response - Evenly distributes air and fuel - Increases air speed - 2 inch thick for applications where hood clearance is not an issue - CNC machined from 6061-T6 billet aluminum - Black anodized for extended life and a noticeable appearance - Carburetor studs and carburetor gaskets can be purchased from us separately Made in U.S.A. Follow us on instagram @ Reapercustoms805