Wilwood Short-Body Master Cylinder Kit, 7/8-inch Bore, Seven- and Ten-Ounce Reservoirs

The seven-eighths-inch bore provides the specified displacement through one pressure outlet in this compact hydraulic master. Two supplied reservoir sizes let the installer place the fluid supply on the body or on a remote bracket as packaging requires. A disc brake manufacturer based in Camarillo, California, Wilwood Engineering was founded by Bill Wood in 1977. It designs and manufactures calipers, rotors, brake lines, fittings, valves and master cylinders for street-performance, motorsport and specialized systems. The chosen service part must agree with the complete system's connections, dimensions and operating demands.

Technical Details

• Manufacturer part number: 260-10374
• Material: Aluminum / Plastic
• Cylinder bore: 7/8"
• Pressure circuits: 1
• Stroke Length: 1.12 in
• Listed displacement per stroke: 0.67 cu in
• Reservoir Type: Remote
• Flange-to-end length: 3.37"
• Overall Length: 7.80"
• Mounting centers: 2.25 inches, vertical flange
• Pushrod dimensions: 4.00" x 5/16-24
• Finish: Black E-coat
• Inlet arrangement: 0.87-inch seating diameter with 11/16-20 internal thread; this is the reservoir feed, not the pressure outlet
• Pressure connection: 1/8-27 NPT outlet; select the appropriate pressure-line adapter
• Reservoir package: 7 and 10 oz plastic reservoir bodies, cap, remote hose, adapters, clamps and bracket hardware
• Fluid selection: DOT 3, DOT 4 or DOT 5.1 for racing/performance use; DOT 5 silicone is not recommended for those uses

Fitment & Compatibility

Confirm bore selection, available pedal stroke and pushrod alignment before installation. Use the remote adapter, hose and clamps when the reservoir is mounted separately; keep that feed line away from heat and allow the pushrod to retract fully. The pressure connection remains 1/8-27 NPT.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS608 instructions and specifications
• Wilwood FL162 instructions and specifications

With more than 20 years of experience, PMB Performance can help compare the specified part with the assembly you are servicing. Include the existing part identification and relevant hydraulic dimensions.