Wilwood Mopar Manual Master Cylinder Kit, Chrome Powder Coat, 15/16-Inch Bore, Left Valve and Four-Bolt Mounting Flange

SKU: 261-16796-P

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Product details

This manual-brake package pairs a chrome powder-coated, four-bolt Mopar master with the left-side valve assembly. Its 15/16-inch bore and supplied pushrod must match the pedal and caliper requirements. For motorsport, street-performance and specialized applications, Wilwood Engineering designs and manufactures disc brake systems and their components. The Camarillo, California company was founded by Bill Wood in 1977. Its range of rotors, calipers, valves, fittings, brake lines and master cylinders supports assemblies whose individual parts must be selected to work together.

Technical Details

  • Manufacturer part number: 261-16796-P
  • Material: Aluminum
  • Cylinder bore: 15/16"
  • Pressure circuits: 2
  • Stroke Length: 1.10 in
  • Reservoir Type: Integral
  • Fluid capacity: 7.8 / 4.7 oz
  • Overall Length: 8.92"
  • Mounting centers: 3.25 × 1.76"
  • Finish: Chrome powder coat
  • Native pressure ports: 1/2-20 at both circuits; use the correct included outlet adapters and seal washers
  • Circuit outlet adapters: Primary: 3/8-24 or 1/2-20 inverted flare; secondary: 3/8-24 or 9/16-20 inverted flare
  • Hydraulic relationship: Equal pressure output from the two circuits before external proportioning; 2:1 primary/secondary volume relationship
  • Service: Factory rebuild only; do not disassemble the tandem piston assembly
  • Kit contents: Master cylinder, left-side combination proportioning valve and bracket, formed stainless connecting tubes and mounting hardware
  • Combination-valve functions: Adjustable rear pressure, isolated front/rear circuits, front-line junction and hydraulic brake-light switch
  • Flange-to-end references: Exact product page: 6.55 inches; DS-1520 dimensional drawing: 6.70 inches. Confirm the available installation envelope.
  • Circuit routing: Primary outlet A feeds the axle with greater total effective caliper piston area, normally the front; secondary B feeds the lesser-area axle, normally the rear. Outlet locations are reversed from the original Mopar master cylinder; follow DS-1520.
  • Linkage: Included pushrod with Mopar eyelet; 3/8-24 adjustment thread. The drawing identifies a 2.00-inch eyelet, not the complete pushrod length.

Fitment & Compatibility

Confirm the four-bolt Mopar interface and pushrod alignment. Check outlet adapter threads and flare forms, and follow the documented front/rear circuit positions.

Manufacturer Documents

The component must suit the completed installation. PMB Performance draws on over 20 years of experience to help you check the part identification, mating connections and required operating dimensions.