If routing plumbing thru a firewall, motor plate, or most any flat panel a ninety degree AN male flare bulkhead is the answer you are after. One side of the fitting is longer allowing the use of a bulkhead nut to secure the bulkhead fitting securely thru the plate that the racer is running the bulkhead thru. Machined from forged alum. and anodized for corrosion protection both ends are male 37 degree AN thread.
Racer has there choice of blue, black or super nickel finish. Bulkhead nut is sold separate.