Venturi K&B .40 6.5 RR

Neck Diameter 0.437"

This was used mostly on the Pylon Racing rear intake engines and used a fuel cutoff that just pinched the fuel line. We also have the stamping for that but we do not have the pivot that attached it to the body.

The needle/spray bar for this was discontinued long ago. It had the fuel nipple and needle on the same side with an 8-40 thread. The cutoff side has a 6-32 thread. You're on your own to fit a spray bar on it.