Turn pedal effort into hydraulic pressure for your brake system with the Dorman First Stop Brake Master Cylinder M390259. This new aluminum unit is precision-engineered to mirror the original master cylinder's design, function and performance. It fits many vehicles, among them the 1994-1999 Chevrolet C1500, 1994-1999 Chevrolet K1500 and 1995-1996 Dodge Ram 1500, as a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list.
Specifications: aluminum master cylinder with 2 outlets and a 1/2-20 rearward outlet size. The reservoir is included. Mounting hardware and a sensor are not included, so consult the vehicle service information for the correct fasteners and whether the originals may be reused. Country of origin: China.
Signs a master cylinder may need replacing include a soft or sinking brake pedal and brake fluid leaking around the unit. Other brake faults can cause similar symptoms, so diagnose the cause before replacing the part.
Interchange: 174-723 · 783-44029 · 83-44029 · 100-2614 · M-86029 · 13-2352 · 10-2352 · 130.66029 · 131.66029 · 355-47158
174723 · 78344029 · 8344029 · 1002614 · M86029 · 132352 · 102352 · 13066029 · 13166029 · 35547158 · 18M1492 · 18M714 · M900952 · 13055 · 4778450 · MC131468 · MC250120 · 18021273 · 18029967 · M3034 · NM3034 · MC390259 · F131468
This part cross-references / interchanges with the following part numbers:
Is this a 1995-1996 Dodge Ram 1500 master cylinder?
Yes. The M390259 is listed as a direct-fit replacement for the 1995-1996 Dodge Ram 1500, and one master cylinder is used per vehicle. Check the Buyer's Guide tab to confirm your truck.
Will this 1994-1999 Chevrolet K1500 master cylinder also fit a 1994-1999 Chevrolet C1500?
It is listed for both the 1994-1999 Chevrolet K1500 and the 1994-1999 Chevrolet C1500. The Buyer's Guide tab shows every other vehicle it fits.
What comes in the box?
You get the master cylinder with its reservoir included. Mounting hardware and a sensor are not included, so check the vehicle service information for the correct fasteners.
What are the key specs of this master cylinder?
It is an aluminum unit with 2 outlets and a 1/2-20 rearward outlet size. Its rubber components use an EPDM compound for resistance to glycol-based brake fluid.
What are signs a brake master cylinder may need replacing?
Common signs include a soft or sinking brake pedal and brake fluid leaking around the master cylinder. Other brake faults can cause similar symptoms, so diagnose the cause before replacing it.
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.
