• CP3959 - Slave Cylinder (SAAB Interchangeable) - Race and Rally
  • CP3959-54
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CP3959 - Slave Cylinder (SAAB Interchangeable)

CP3959 - Slave Cylinder (SAAB Interchangeable)

CP3959-1254

€431.22 €530.40
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  • Feature Icon 18mm or 12mm Stroke Options
  • Feature Icon Supplied with Release Bearing
  • Feature Icon Interchangeable with SAAB 900 Slave Cylinder
Bearing Fulcrum Diameter
Max Stroke
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CP3959 - Concentric Slave Cylinder
(SAAB Interchangable)

The CP3959 series of concentric slave cylinders offer a lightweight die cast Aluminium body and are hydraulically self contained unit with high temperature seals.

All sealing surface are protected by a hard wearing / low friction coating which helps prolong seal life.

Interchangable with SAAB cylinder no. 4776308 (8729840)

Features

  • Interchangeable with SAAB 900 Slave Cylinder
    • Part No: 4776308 (8729840)
  • Die Cast Aluminium Alloy Body
  • Aluminium Alloy Piston
  • 12mm or 18mm Max Stroke Options
  • Use with RBF 660, RBF 600 or high quality brake fluids
  • Cylinders are supplied with release bearings in a choice of three fulcrum diameters

CP6859 / CP3859 Difference

  • Hydraulic port geometry and thread now M10x1.00 (CP6859) was M12x1.00 (CP3959)
  • Reduced port height, now 44.92mm (CP6859) was 59.12mm (CP3959)

Technical Details:

Weight 0.425 Kg
Assembly Mounting PCD 3 holes on a 74.omm PCD
Hydraulic Threads M12x1.00
Fitting Tightening Torque 28 Nm (21 ft/lb)
Effective Area 920mm2
Max Pressure 8.6N/mm2
Port Height 59.12mm


Part Numbers:

 Part Number

Release Bearing Fulcrum Diameter

Max Stroke

Release Bearing

Bearing Configuration
CP3959-38 38.0mm 18.0mm CP3457-16 1
CP3959-50 50.0mm 18.0mm CP3457-11 1
CP3959-54 54.0mm 18.0mm CP3457-6 1
CP3959-1238-IN 38.0mm 12.0mm CP3457-16 3
CP3959-1250 50.0mm 12.0mm CP3457-9 2
CP3959-1254 54.0mm 12.0mm CP3457-10 2


Bearing Configurations:

  1. Bearing Configuration 1: (18mm Stroke) - Inner Race Rotating
    This slave cylinder configuration features the bearing housed in the piston via the outer race and the inner race rotates. This configuration is suitable for high speed appliations.
  2. Bearing Configuration 2: (12mm Stroke) - Outer Race Rotating
    This slave cylinder configuration features a shortened stroke to reduce the overall slave cylinder body length. The bearing is housed on the piston via the inner race and the outer race rotates.
  3. Bearing Configuration 3: (12mm Stroke) - Inner Race Rotating
    This slave cylinder configuration features a shortened stroke to reduce the overall slave cylinder body length. The bearing is housed in the piston via the outer race. The inner race rotates, suitable for high speed applications. 

Spare Parts

Item

Part Number
 Seal Kit CP3759-3
Hydraulic Outlet Fittings
7/16" UNF CP3859-15
305-04-M121Z1
3/8" UNF CP3859-16
305-03-M121Z1
Sealing Washer 44519

 

    Installation

    Ensure that the unit is installed in the correct position, with the bleed port uppermost as shown in the installation drawings. All fittings intended to seat at the bottom of the hydraulic ports must have an included angle of 90°.

    Notes

    When large diameter splines are used please check clearance of the spline in the slave cylinder body. Larger splines also have an increased driven plates hub boss. Please check the clearance of the driven plates at maximum slave travel. See the clutch installation drawing for details.

    Mineral oil versions of all the assemblies on this drawing are available, for further information see CP8084-1CD for mineral oil compatible assemblies in the Documents Download Tab.

    CP6859 supercedes CP3859 Cylinder series BUT IS NOT IDENTICAL. The differences between CP3859 & CP6859 can be identified by viewing this document: CP3859 - CP6859 Differences.

    Brand AP Racing
    Option SKU Barcode
    Ø50mm / 12.00mm CP3959-1250
    Ø50mm / 18.00mm CP3959-50
    Ø54mm / 12.00mm CP3959-1254
    Ø54mm / 18.00mm CP3959-54

    Brand Part Number
    SAAB 4776308
    SAAB 8729840

    AP Racing is the leading manufacturer of performance brake and clutch systems for road and race cars. The core product range includes clutches, callipers, discs, pads, master cylinders, pedal boxes and air jacks, as well as road and competition brake systems for motorcycles.

    Being at the pinnacle of motor sport and OEM supply, numerous factors dictate the most specialised requirements for ultimate success. From the state of the art 3 dimensional solid modelling/design and Finite Element Analysis CAD facilities, to sophisticated research, development and testing including a special NVH and multiple other dynamometers that can simulate true racing speeds and the arduous of environments for road cars, AP Racing is constantly probing the boundaries of technology every working day.

    Race and Rally are the official AP Racing Distributor for Northern Ireland

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