Wilwood High-Volume Master Cylinder Reservoir Cap Diaphragm, New-Style Lid

SKU: 210-13944

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Fitment questions?

Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.

Product details

This diaphragm fits the new-style reservoir lid used on the specified Wilwood High-Volume master cylinder. It is the flexible cap component, so the reservoir and lid shape must match rather than merely sharing a master-cylinder bore size. Bill Wood founded Wilwood Engineering in 1977. From Camarillo, California, the company designs and manufactures disc brake systems, including rotors, calipers, valves, master cylinders, brake lines and fittings. These products serve specialized, motorsport and street-performance applications, where the requirements of the complete brake system determine component choice.

Technical Details

  • Manufacturer part number: 210-13944
  • Package: One component
  • Seal form: Diaphragm

Fitment & Compatibility

Confirm that the High-Volume cylinder uses the new-style lid for this diaphragm. This is an individual cap diaphragm, not a complete reservoir cover or internal hydraulic rebuild kit.

Wilwood product specifications

Bring the original assembly number and relevant measurements to PMB Performance for fitment assistance backed by 20+ years of experience.