Wilwood Knob Brake Proportioning Valve with 3/16-inch Line Adapters, NPT Ports

This knob-operated proportioning valve changes the rear circuit pressure relationship to help balance a custom brake system. Its NPT body ports are supplied with two 3/8-24 inverted-flare adapters for 3/16-inch double-flared hard lines. Bill Wood's founding of Wilwood Engineering in 1977 established a disc brake design and manufacturing business based in Camarillo, California. Calipers, rotors, master cylinders, fittings, valves and brake lines form its range for motorsport, street-performance and specialized applications. Choosing a service component still requires checking the mating parts and overall system configuration.

Technical Details

• Manufacturer part number: 260-8419
• Material: Aluminum / Steel
• Finish: Clear Anodize
• Maximum pressure reduction: 57%
• Mounting: Two 0.25-inch holes on 1.00-inch centers
• Use: Custom brake-system proportioning, normally in the rear circuit; not a direct OEM replacement
• Pressure connections: Native 1/8-27 NPT inlet and outlet; two 3/8-24 female inverted-flare adapters supplied
• Adjustment: Rotary knob

Fitment & Compatibility

Install in the appropriate rear pressure circuit with flow following the IN and OUT markings. It is not a direct replacement for an original-equipment proportioning valve; mount through the two body holes and test brake balance under controlled conditions.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS488 instructions and specifications
• Wilwood FL162 instructions and specifications

PMB Performance has more than 20 years of experience matching brake components. Share the actual mounting, linkage and hydraulic arrangement when requesting fitment assistance.