ARP Cylinder Head Stud Kit - 12 Point Nuts - Chromoly - Black Oxide - Mazda 4-Cylinder 218-4703 Fuel Level Sending Unit Flange 9 Wideband Oxygen Sensor provides

9 Wideband Oxygen Sensor provides real-time Fuel Map Learn

Gasket-sealed removable lid allows for easy cleaning

Usually these are made of pipe and threaded in the holes

install an MSD DIS-2 Ignition Control

Thick - 74 mm Center

ARP Cylinder Head Stud Kit - 12 Point Nuts - Chromoly - Black Oxide - Mazda 4-Cylinder 218-4703 Fuel Level Sending Unit Flange 9 Wideband Oxygen Sensor providesARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, IMSA, NASCAR and NHRA drag racing and marine applications. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Cylinder Head Stud Kit 12