When a worn or leaking clutch master cylinder leaves your clutch pedal soft or sinking to the floor, the Dorman - First Stop Clutch Master Cylinder (MPN CM116209) drops in as a direct-fit replacement for the 1988-1991 Chevrolet and GMC C1500, C2500, C3500, K1500, K2500 and K3500 (plus the 1991 C3500HD), spanning the V6-4.3L, V8-5.0L, V8-5.7L, V8-6.2L and V8-7.4L engines — see the Buyer's Guide tab for the full list of 55 applications. It converts clutch-pedal force into the hydraulic pressure that actuates the clutch release.
- Direct replacement: built to match the original clutch master cylinder on the listed vehicles.
- Precise design: reverse-engineered from the original equipment to fit and function reliably.
- Durable materials: includes high-grade rubber components compatible with standard brake fluid.
- Fitting specs: 0.688 in inside diameter with an M12 x 1.0 outlet thread.
Backed by a team of engineers and quality-control experts. Country of origin: China.
Interchange: 18M2112 · 385-369 · 385369 · M0406 · 23-36006 · 2336006 · M903137 · Q-82006 · Q82006 · 12348 · 136.62006 · 137.62006 · CM119584 · 15585414 · 15585418 · 15616090 · LMC134 · 2839813 · CM1230 · 39813 · CMA39813 · SH5020 · F119584
Manufacturer part number CM116209.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this clutch master cylinder do?
It converts clutch-pedal force into the hydraulic pressure that actuates the clutch release. If a leaking or failing master cylinder is the cause of a soft or sinking pedal, this replaces it.
Will this fit my truck?
It's a direct-fit replacement for 1988-1991 Chevrolet and GMC C1500-C3500 and K1500-K3500 (and the 1991 C3500HD) with the V6-4.3L, V8-5.0L, V8-5.7L, V8-6.2L or V8-7.4L. Confirm in the Buyer's Guide tab.
What are the signs my clutch master cylinder may need replacing?
Signs may include a soft or spongy clutch pedal, a pedal that sinks to the floor, difficulty shifting gears, or visible fluid leakage near the cylinder. Diagnose the cause before replacing.
What fluid is it compatible with?
It includes high-grade rubber components compatible with standard brake fluid. Consult your vehicle service information for the correct fluid specification.
What's included and what are the specs?
The package contains one clutch master cylinder. It has a 0.688 in inside diameter and an M12 x 1.0 outlet thread. Country of origin: China.
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