Holley EFI LSU4 Bosch WideBand Sensor RA002003 When slipped on the end

When slipped on the end of a crankshaft

Oragnic / Carbon

4 in Center Inlet

Reduces turbulence and smooths air entry into the venturi

Holley EFI LSU4 Bosch WideBand Sensor RA002003 When slipped on the endLSU4 Bosch Wideband Holley is quickly becoming The New Standard In EFI! Holley's HP ECU is standard equipment on the 2013 2014 Chevrolet COPO Camaro and Holley's EFI throttle body powers every NASCAR Cup Series team. Top racers are making the switch to Holley EFI every day. Racers like Tom Bailey who set three new records and took the overall event win on the 2013 Hot Rod Magazine Drag Week and John Scali who used it to win the 2013 JEGS All Star