


⚙️ Upgrade your clutch game with precision-engineered power!
The Dorman CM39903 Clutch Master Cylinder is a direct OE replacement part designed to restore hydraulic pressure in the clutch system for select Acura Integra and Honda Civic models from the 1990s to early 2000s. Lightweight and vehicle-specific, it ensures a perfect fit and reliable clutch performance, backed by strong customer ratings and trusted Dorman quality.





| ASIN | B001PYCINM |
| Best Sellers Rank | #190,714 in Automotive ( See Top 100 in Automotive ) #57 in Automobile Clutch Primary Cylinders |
| Brand | Dorman |
| Customer Reviews | 4.5 4.5 out of 5 stars (272) |
| Date First Available | 1 January 2024 |
| Item Weight | 363 g |
| Item model number | CM39903 |
| Manufacturer | Dorman - First Stop |
| Manufacturer Part Number | CM39903 |
| Model | CM39903 |
| OEM Part Number | 072-8838; 072-9191; 072-9744; 13016; 13328; 136.40008; 137.40008; 18M2216; 18M2241; 23-08008; 350064; 350233; 385-398; 385-471; 39903; CM1162; CM131880; CM1366; CM140134; CM250010; CM250040; CMA350064; CMA350233; CMA39903; F131880; F140134; LMC310; M0808; M903167; M903242; Q-54008; Q-54013; SH5036; 46920-S04-A01; 46920-S5A-G01; 46920-SR3-A01; 46920-ST7-A01 |
| Product Dimensions | 16.76 x 12.95 x 4.06 cm; 362.87 g |
J**Y
Installed on My 1997 Civic CX hatchback. Quality part is decent, fits properly, does the job👍 Best bang for your buck.
A**R
The size of the clutch line is too small doesn’t fit and no one makes an adapter
S**S
Been on the car for 6 months. No issues so far. Some people complain the studs are loose, mine were but I just tightened them before installing. But some people didn't. Tell me who's fault that is?
M**X
Just received it today and tried to install and the thread size for the brake line nut was incorrect. The OEM master had a larger nut than this new replacement. Item does seem like it could be of quality but annoying having to deal with some trivial differences in parts.
A**R
The master cylinder fit my 1998 civic perfectly. If (like me) you're not a mechanic, be prepared. The actual installation is very simple. Removing and reattaching the cotter-pin to the clutch pedal may take some time. This is no fault of the master cylinder part. The attachment point to the clutch pedal is in a very awkward position. It requires you to lie on your back at an angle. FYI, as the area is so high up under the steering wheel side of the dash, a good light source will come in handy. I also used my smart phone to record video to locate the exact position of the cotter-pin for removal and installation, as it is difficult to see. Despite my installation difficulties, this is a great deal for the Do-it-yourself folks!
TrustPilot
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