Wilwood 9/16-20 Tandem Master Cylinder Brake Tube Nut for 3/16-Inch Line

The larger 9/16-20 thread distinguishes this Wilwood tube nut from the smaller tandem-master outlet fittings. It retains 3/16-inch brake tubing at the matching inverted-flare port. The complete brake system's requirements guide the selection of individual Wilwood components. Founded by Bill Wood in 1977 and based in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems for motorsport, street-performance and specialized applications. Its component range includes calipers, brake rotors, master cylinders, valves, fittings and brake lines.

Technical Details

• Manufacturer part number: 220-5248
• Component: Master cylinder or reservoir fitting
• Connection specification: 9/16-20 inverted flare for 3/16
• Package quantity: 1

Fitment & Compatibility

Verify both the tube diameter and the cylinder's 9/16-20 port before assembly. A nut with the same tubing bore but a different external thread cannot substitute, and the tube's formed flare must suit the port seat.

Manufacturer Documents

• Wilwood product specifications
• Wilwood flexline fitting guide

For a fitment check, give PMB Performance the vehicle year, brake configuration and details of both mating connections. Our team brings more than 20 years of parts and brake-system experience to the comparison.