HomeTransmission > Manual Transmission ComponentsDorman CM39660 Clutch Master Cylinder
Part #: CM39660

Dorman CM39660 Clutch Master Cylinder

47 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: BMW, 318i, 318is, 325e, 325i, 325is, 325iX, 528e, 533i, 535i, 535is, 635CSi, M3, M5, and M6
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Overview of Dorman Clutch Master Cylinder CM39660

The Dorman Clutch Master Cylinder CM39660 is designed for reliable performance in manual transmission systems. Engineered with a 0.75-inch bore diameter and M10 x 1.0 outlet thread size, this component ensures precise hydraulic pressure for smooth clutch operation in select BMW models.

  • Bore diameter: 0.75 inches for consistent hydraulic pressure
  • Outlet thread size: M10 x 1.0 for secure fluid connection
  • Port thread diameter: 10 mm for compatibility with OEM fittings
  • Standard replacement grade for dependable function
  • Package includes one clutch master cylinder

Detailed Product Description

The Dorman CM39660 clutch master cylinder is a standard replacement part engineered to restore clutch hydraulic function in manual transmission vehicles. Its 0.75-inch bore diameter is calibrated to deliver the correct fluid displacement, ensuring smooth clutch engagement and disengagement. The M10 x 1.0 outlet thread size and 10 mm port thread diameter provide compatibility with original equipment hydraulic lines, minimizing installation complications. This clutch master cylinder is compatible with a range of BMW models including the 318i, 318is, 325e, 325i, 325is, 325iX, 528e, 533i, 535i, 535is, 635CSi, M3, M5, and M6, making it a suitable choice for maintaining proper clutch system performance.

Compatible Vehicles and Common Applications

  • Restores clutch hydraulic pressure in BMW 318i and 318is manual transmissions
  • Replaces worn or leaking clutch master cylinders in BMW 325e, 325i, and 325is
  • Addresses clutch engagement issues in BMW 528e, 533i, and 535i models
  • Supports clutch system function in performance models like BMW M3, M5, and M6
  • Suitable for BMW 635CSi and 325iX requiring standard replacement clutch master cylinders

Installation Notes and Tips

When installing the Dorman CM39660 clutch master cylinder, ensure the hydraulic system is properly bled to remove air and maintain clutch responsiveness. Verify thread compatibility with existing hydraulic lines using the M10 x 1.0 outlet and 10 mm port threads. Inspect the bore diameter to confirm it matches OEM specifications for your BMW model. Proper installation will help avoid clutch slippage or engagement delays.

Quality Assurance and Warranty

Dorman manufactures the CM39660 clutch master cylinder to meet standard replacement quality requirements. This part undergoes rigorous testing to ensure durability and reliable hydraulic performance. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in materials and workmanship.

BrandDorman
Part NumberCM39660
Bore Diameter0.75
Item GradeStandard replacement
Outlet Thread SizeM10 x 1.0
Package ContentsClutch master cylinder
Port Thread Diameter10

This part fits 47 vehicles. Search below:

YearMakeModelPositionNotes
1993BMW325iN/ADrum brake wheel cylinder fitment note: 19mm bore size.
1992BMW325iN/ADrum brake wheel cylinder fitment note: 19mm bore size.
1991BMW318iN/AFits vehicles with a 3/4 inch bore size.
1991BMW318isN/AFits vehicles with a 3/4 inch bore size.
1991BMW325iN/AFits vehicles with a 3/4 inch bore size.
1991BMW325isN/AFits vehicles with a 3/4 inch bore size.
1991BMW325iXN/AFits vehicles with a 3/4 inch bore size.
1991BMWM3N/AFits vehicles with a 3/4 inch bore size.
1990BMW325iN/AFits vehicles with a 3/4 inch bore size.
1990BMW325isN/AFits vehicles with a 3/4 inch bore size.
1990BMW325iXN/AFits vehicles with a 3/4 inch bore size.
1990BMWM3N/AFits vehicles with a 3/4 inch bore size.
1989BMW325iN/AFits vehicles with a 3/4 inch bore size.
1989BMW325isN/AFits vehicles with a 3/4 inch bore size.
1989BMW325iXN/AFits vehicles with a 3/4 inch bore size.
1989BMW635CSiN/AFits vehicles with a 3/4 inch bore size.
1989BMWM3N/AFits vehicles with a 3/4 inch bore size.
1988BMW325iN/AFits vehicles with a 3/4 inch bore size.
1988BMW325isN/AFits vehicles with a 3/4 inch bore size.
1988BMW325iXN/AFits vehicles with a 3/4 inch bore size.
1988BMW528eN/AFits vehicles with a 3/4 inch bore size.
1988BMW535iN/AFits vehicles with a 3/4 inch bore size.
1988BMW535isN/AFits vehicles with a 3/4 inch bore size.
1988BMW635CSiN/AFits vehicles with a 3/4 inch bore size.
1988BMWM3N/AFits vehicles with a 3/4 inch bore size.
1988BMWM5N/AFits vehicles with a 3/4 inch bore size.
1988BMWM6N/AFits vehicles with a 3/4 inch bore size.
1987BMW325eN/AFits vehicles with a 3/4 inch bore size.
1987BMW325iN/AFits vehicles with a 3/4 inch bore size.
1987BMW325isN/AFits vehicles with a 3/4 inch bore size.
1987BMW528eN/AFits vehicles with a 3/4 inch bore size.
1987BMW535iN/AFits vehicles with a 3/4 inch bore size.
1987BMW635CSiN/AFits vehicles with a 3/4 inch bore size.
1987BMWM6N/AFits vehicles with a 3/4 inch bore size.
1986BMW325eN/AFits vehicles with a 3/4 inch bore size.
1986BMW528eN/AFits vehicles with a 3/4 inch bore size.
1986BMW535iN/AFits vehicles with a 3/4 inch bore size.
1986BMW635CSiN/AFits vehicles with a 3/4 inch bore size.
1985BMW318iN/AFits vehicles with a 3/4 inch bore size.
1985BMW325eN/AFits vehicles with a 3/4 inch bore size.
1985BMW528eN/AFits vehicles with a 3/4 inch bore size.
1985BMW535iN/AFits vehicles with a 3/4 inch bore size.
1985BMW635CSiN/AFits vehicles with a 3/4 inch bore size.
1984BMW318iN/AFits vehicles with a 3/4 inch bore size.
1984BMW528eN/AFits vehicles with a 3/4 inch bore size.
1984BMW533iN/AFits vehicles with a 3/4 inch bore size.
1983BMW533iN/AFits vehicles with a 3/4 inch bore size.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

071-787212346136.3400518M20682152115600023-6200539660CM1016CM116662CMA39660LMC108M0305M903093Q-04005SH5103

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.