OE Quality 60-Day Returns

Dorman CM39718 Clutch Master Cylinder

Brand	Dorman CM39718
Bore Diameter	0.688
Item Grade	Standard replacement
Package Contents	Clutch master cylinder
Fits	Pontiac · 3 vehicles

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

Standard replacement. A clutch master cylinder for restoring hydraulic clutch operation.

Cross-references AMS Automotive M0407, Gates 12170 and PERFECTION 39718 for the same application. See all 13.

$113.38Free shipping

Out of stock

Step 1 — Confirm fitment

Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment

Verify this part fits before purchasing — free returns if it doesn't

Step 2 — Quantity

Free shipping to the continental U.S.

Free returns within 60 days if it doesn't fit when fitment is verified.

Not what you need? See all Clutch Master Cylinder options

Clutch Master Cylinder for Manual Transmission Service

Dorman CM39718 is a direct replacement clutch master cylinder for specific Pontiac Fiero applications. It is precision-engineered to match the original equipment design, helping restore hydraulic clutch operation on 1984-1986 Pontiac Fiero models.

Key Features

Direct replacement clutch master cylinder for manual transmission systems
0.688 bore diameter for the specified OE-style application
Standard replacement grade for routine repair service
Designed for 1984-1986 Pontiac Fiero fitment
Package contents: clutch master cylinder

Detailed Description

This Dorman clutch master cylinder, part number CM39718, is built to match the original equipment design used on select Pontiac Fiero vehicles. It is intended for 1986 Pontiac Fiero models with an 11/16 in. bore and cast iron body, as well as 1984-1985 Pontiac Fiero models with drum brakes and an 11/16 in. bore size. For buyers searching for a Pontiac Fiero clutch master cylinder replacement, CM39718 provides a direct-fit solution for the specified manual transmission hydraulic system.

This part cross-references Sachs SH5094 for the same application.

Common Issues It May Solve

Clutch fluid leaking from the master cylinder
Soft or inconsistent clutch pedal feel
Difficulty disengaging the clutch during shifting
Loss of hydraulic pressure in the clutch system
Worn or malfunctioning original clutch master cylinder

Installation Notes and Tips

Verify bore diameter and vehicle configuration before installation. This part is listed for 1986 Pontiac Fiero with an 11/16 in. bore and cast iron body, and for 1984-1985 Pontiac Fiero with drum brakes and an 11/16 in. bore size. Confirm the hydraulic line connection and system condition during replacement, and bleed the clutch hydraulic system after installation to remove air.

Quality Assurance

Dorman manufactures this clutch master cylinder as a standard replacement part engineered to match OE design for the listed Pontiac Fiero applications. Part number CM39718 is intended to provide a reliable replacement for the original hydraulic clutch master cylinder in the confirmed fitment range.

This part fits 3 vehicles

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

Year	Make	Model	Notes
1986	Pontiac	Fiero	Bore: 11/16 In.; Cast Iron Body
1985	Pontiac	Fiero	Fits drum brakes with 11/16" bore size.
1984	Pontiac	Fiero	Fits drum brakes with 11/16" bore size.
No rows match your filter.

Directly replaces or cross-references 13 part numbers

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

AMS Automotive — M0407Gates — 12170PERFECTION — 39718Sachs — SH509418M2080136.62007283971810026327CM1231CM110113CMA39718M903105Q-82007