Dorman - First Stop Clutch Master Cylinder P/N:CM640221
The clutch master cylinder converts clutch-pedal effort into hydraulic pressure that travels to the slave cylinder to disengage the clutch, and the Dorman - First Stop Clutch Master Cylinder CM640189 drops in as a direct-fit replacement for a range of 1992-1998 BMW models, including the 318i, 318is, 318ti, 328i, 328is, M3 and Z3. If a leaking or malfunctioning original clutch master cylinder is the cause of a soft or sinking pedal or difficult shifting, this unit replaces it.
Fitment: 1992-1995 BMW 318is [L4-1.8L]; 1995 BMW 318i [L4-1.8L]; 1995 BMW 318ti [L4-1.8L]; 1995 BMW M3 [L6-3.0L]; 1996-1997 BMW 318i [L4-1.9L]; 1996-1997 BMW 318is [L4-1.9L]; 1996-1997 BMW 318ti [L4-1.9L]; 1996-1997 BMW 328i [L6-2.8L]; 1996-1997 BMW 328is [L6-2.8L]; 1996-1998 BMW M3 [L6-3.2L]; 1996-1997 BMW Z3 [L4-1.9L]; 1997 BMW Z3 [L6-2.8L]. See the Buyer's Guide tab for the full list.
Interchange: Manufacturer part number CM640189. Country of origin: China.
This part cross-references / interchanges with the following part numbers:
What does this clutch master cylinder do?
It converts clutch-pedal effort into hydraulic pressure that is sent to the slave cylinder to disengage the clutch. If your original is leaking or malfunctioning, CM640189 replaces it.
Which vehicles does CM640189 fit?
It's a direct-fit replacement for 1992-1998 BMW models including the 318i, 318is, 318ti, 328i, 328is, M3 and Z3. See the Buyer's Guide tab for the full engine-level list.
Does it include a reservoir, and is it pre-bled?
No. The reservoir is not included and the cylinder is not pre-bled or pre-filled, so plan to bleed the hydraulic system during installation.
What fluid is it compatible with?
It includes high-grade rubber components for compatibility with standard brake fluid, which is what clutch hydraulic systems use.
What is it made of and how big is the bore?
The body is aluminum with a silver finish and a 3/4 in inside-diameter bore. Country of origin: China.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.