Dorman - First Stop Clutch Master Cylinder P/N:CM39931

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$47.99
MPN: CM39931
Item Package Quantity: 1
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Dorman - First Stop Clutch Master Cylinder P/N:CM39931
Dorman - First Stop Clutch Master Cylinder P/N:CM39931
$47.99

When the clutch master cylinder starts leaking or the pedal turns soft, the Dorman - First Stop Clutch Master Cylinder CM39931 gives you a direct-fit hydraulic replacement. It drops in for the 1990-1997 Geo Prizm (L4-1.6L), 1993-1997 Geo Prizm (L4-1.8L), 1990-1997 Toyota Corolla (L4-1.6L), 1993-2002 Toyota Corolla (L4-1.8L), and 1998-2002 Chevrolet Prizm (L4-1.8L).

Mounted at the clutch pedal, this cylinder converts pedal force into hydraulic pressure that travels to the slave cylinder to disengage the clutch as you shift. If a worn or leaking master cylinder is the cause of a spongy pedal or hard shifting, this unit replaces it.

  • Direct replacement: reverse-engineered from the original equipment so it installs and operates like the factory master cylinder on the listed vehicles.
  • Bore size: 0.625 in inside diameter.
  • Durable materials: high-grade rubber components compatible with standard brake fluid.
  • Quality backed: supported by a team of engineers and quality-control experts in the United States.

Country of origin: China. Manufacturer part number CM39931.

Frequently Asked Questions

What does this clutch master cylinder do?

Mounted at the clutch pedal, it converts your pedal force into hydraulic pressure that travels to the slave cylinder, disengaging the clutch so you can shift gears.

Which vehicles does the CM39931 fit?

It fits the 1990-1997 Geo Prizm (L4-1.6L), 1993-1997 Geo Prizm (L4-1.8L), 1990-1997 Toyota Corolla (L4-1.6L), 1993-2002 Toyota Corolla (L4-1.8L), and 1998-2002 Chevrolet Prizm (L4-1.8L).

What are signs my clutch master cylinder may need replacing?

A leaking cylinder, a soft or spongy clutch pedal, or trouble shifting can be signs. Diagnose the cause first, as other hydraulic clutch parts can produce similar symptoms.

What is the bore size of this cylinder?

The inside diameter (bore) is 0.625 in.

What kind of fluid components does it use?

It includes high-grade rubber components made for compatibility with standard brake fluid.