Wilwood Caliper Pressure Gauge Adapter, 1/8-27 NPT to 1/4-28 Bleeder Port

This pressure-test adapter connects a gauge using 1/8-27 NPT to a 1/4-28 bleed-screw port at a compatible caliper or master cylinder. The zinc-plated steel fitting is identified for Wilwood's Quick Check gauge application, with a hex body for installation. Wilwood Engineering, founded in 1977 by Bill Wood, is based in Camarillo, California. The company designs and manufactures disc brake systems and supplies master cylinders, calipers, brake rotors, valves, fittings and lines for motorsport, street-performance and specialized installations. Select each component around the complete system’s requirements.

Technical Details

• Manufacturer part number: 220-0971
• Component: Pressure Gauge Fitting
• Connection specification: 1/8-27 NPT to 1/4-28
• Package quantity: 1

Fitment & Compatibility

Confirm that the gauge has the specified NPT connection and that the accessible bleed port is 1/4-28. This adapter is a diagnostic connection, not a replacement brake-hose terminal.

Manufacturer Documents

• Wilwood product specifications
• Wilwood flexline fitting guide

With more than 20 years of experience, PMB Performance can assist with brake-component selection. Provide the vehicle and installed brake details so the connection and mounting requirements can be checked together.