ButlerBuilt Dual Hose Black Duct - 10.5" x 9.0" x 4.5" 500020155 All flywheels and drive flanges

All flywheels and drive flanges have a SAE 10 tooth internal spline

Starter Kit

1955-1967 Cadillac DeVille

Chrysler/Dodge 2

2008-2010 Dodge Ram 2500

ButlerBuilt Dual Hose Black Duct - 10.5" x 9.0" x 4.5" 500020155 All flywheels and drive flangesButler Built Air Ducts are used by many top NASCAR competitors. Computer aided design (CAD) provides optimum aerodynamic shape for smooth uninterrupted air flow. The NACA ducts can be installed in side windows or body panels to direct cool outside air to brakes, oil coolers or cockpit. (Uses 3" hose.) Racers have chosen BUTLERBuilt Professional Seat Systems for their seating needs for decades. BUTLERBuilt has always been proactive in their approach to