Dorman CM640031 Clutch Master Cylinder
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Dorman

Dorman CM640031 Clutch Master Cylinder

Brand Dorman CM640031
Bore Diameter 0.625
Item Grade Standard replacement
Package Contents Clutch master cylinder
Fits Honda and Isuzu · 18 vehicles

Direct replacement. Precision-engineered to match the original equipment design.

Standard replacement. A dependable clutch master cylinder for restoring hydraulic performance.

Clutch master cylinder for manual transmission applications.

Cross-references AMS Automotive M0905, Beck/Arnley 072-9620 and Centric Parts 136.43005 for the same application. See all 14.

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Clutch Master Cylinder for Select Isuzu and Honda Models

This Dorman clutch master cylinder is a direct replacement for vehicles with a leaking or malfunctioning hydraulic clutch system. Built to match the original equipment design for specific applications, it supports consistent clutch pedal operation on select Isuzu Rodeo, Isuzu Rodeo Sport, Isuzu Amigo, and Honda Passport models.

  • Direct replacement clutch master cylinder for manual transmission hydraulic systems
  • Precision-engineered to match original equipment design
  • Standard replacement grade for everyday service use
  • Bore diameter: 0.625 in. / 5/8 in.
  • Package contents: clutch master cylinder
  • Dorman part number CM640031

Detailed Product Overview

The Dorman CM640031 clutch master cylinder is built for specific vehicle years, makes, and models where the original hydraulic unit has begun to leak, lose pressure, or operate inconsistently. With a 5/8-inch bore diameter, this standard replacement part is intended to restore proper hydraulic action in the clutch system on applications such as the 1998-2004 Isuzu Rodeo, 2001-2003 Isuzu Rodeo Sport, 1998-2000 Isuzu Amigo, and select Honda Passport models. This part cross-references Beck/Arnley 072-9620 and LuK LMC366 for the same application.

Common Problems This Part Can Address

  • Clutch pedal sinking or failing to return normally
  • Hydraulic fluid leakage at the master cylinder
  • Difficulty disengaging the clutch
  • Inconsistent clutch pedal feel
  • Loss of hydraulic pressure in the clutch system

Installation Notes and Tips

Verify bore size and vehicle application before installation, especially on 2000 Honda Passport models noted with a 5/8-inch bore from 5/00. Inspect the hydraulic line, reservoir, and slave cylinder for wear or contamination before replacing the master cylinder. Proper bleeding of the clutch hydraulic system is required after installation to restore pedal feel and full disengagement.

Quality Assurance

Dorman manufactures this direct replacement clutch master cylinder to follow the original equipment design for the listed applications. The CM640031 is a standard replacement part selected for specific fitment and service requirements.

Related reading

This part fits 18 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2004IsuzuRodeoN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
2003IsuzuRodeoN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
2003IsuzuRodeo SportN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
2002HondaPassportN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
2002IsuzuRodeoN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
2002IsuzuRodeo SportN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
2001HondaPassportN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
2001IsuzuRodeoN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
2001IsuzuRodeo SportN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
2000HondaPassportN/ABore: 5/8 In.; From 5/00
2000IsuzuAmigoN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
2000IsuzuRodeoN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
1999HondaPassportN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
1999IsuzuAmigoN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
1999IsuzuRodeoN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
1998HondaPassportN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
1998IsuzuAmigoN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
1998IsuzuRodeoN/ACompatible with drum brake wheel cylinders featuring a 5/8" bore size.
Directly replaces or cross-references 14 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AMS Automotive — M0905Beck/Arnley — 072-9620Centric Parts — 136.43005Dorman - HELP — 13503LuK — LMC366PERFECTION — 350123385-503972591408971250250CM134564CM450120CMA350123M903278Q-54010