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DormanPart #: M98894
Dorman M98894 Brake Master Cylinder
127 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Dodge and Plymouth, D150, Ramcharger, W150, B150, B250, B350, D100, W100, D250, W250, D350, W350, PB150, PB250, PB350, Trailduster, B100, B200, B300, CB300, D200, D300, W200, and PB200
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Not what you need? See all Brake Master Cylinder options
Reliable Brake Master Cylinder for Dodge and Plymouth Vehicles
The Dorman M98894 Brake Master Cylinder is engineered to restore proper brake hydraulics in select Dodge and Plymouth models. Designed with durable cast iron and a 1.125-inch bore diameter, this master cylinder ensures consistent brake fluid pressure for safe stopping performance.
- Master cylinder bore diameter: 1.125 inches for precise hydraulic control
- Constructed from cast iron for long-lasting durability
- Includes reservoir for brake fluid storage
- Two outlet ports with secondary outlet thread diameter of 0.5 inches
- Rearward outlet size: 9/16-20 for secure brake line connections
- Compatible with multiple Dodge and Plymouth models including B100, B150, D100, Ramcharger, and W150 series
- Part number M98894 ensures exact replacement fit
Product Details and Specifications
This Dorman brake master cylinder features a cast iron body that withstands the rigors of brake system pressure and heat. The 1.125-inch bore diameter is designed to match factory specifications, providing reliable brake fluid displacement. The included reservoir allows for proper fluid storage and circulation, while the two outlet ports accommodate front and rear brake lines. The secondary outlet thread diameter of 0.5 inches and rearward outlet size of 9/16-20 ensure compatibility with original brake line fittings. This part is supplied without mounting hardware, so existing hardware should be reused or replaced as needed.
Compatible Dodge and Plymouth Models
This master cylinder is compatible with a range of Dodge and Plymouth vehicles, including the B100, B150, B200, B250, B300, B350, D100, D150, D200, D250, D300, D350, PB150, PB250, PB350, Ramcharger, W100, W150, W200, W250, and W350 models. Using part number M98894 ensures a precise fit and proper brake system function for these vehicles.
Common Brake System Issues Addressed
- Brake pedal sinking or sponginess due to master cylinder wear
- Brake fluid leaks from a damaged or corroded master cylinder
- Uneven braking caused by inconsistent hydraulic pressure
- Brake warning light activation related to master cylinder failure
- Reduced braking performance or pedal travel issues
Installation Notes and Tips
When installing the Dorman M98894 master cylinder, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Since mounting hardware is not included, inspect existing bolts and replace if necessary. Verify that brake lines match the specified outlet thread sizes for a secure connection. Follow vehicle-specific service manual instructions for torque specifications and safety precautions.
Quality Assurance and Warranty
Dorman brake master cylinders are manufactured to meet or exceed OEM standards for fit and function. The M98894 part undergoes rigorous quality control to ensure durability and reliable brake system performance. Please refer to Dorman's warranty policy for coverage details on this brake master cylinder.
| Brand | Dorman |
|---|---|
| Part Number | M98894 |
| Master Cylinder Bore Diameter | 1.125 |
| Master Cylinder Material | Cast Iron |
| Mounting Hardware Included | No |
| Number of Outlets | 2 |
| Package Contents | Master Cylinder |
| Rearward Outlet Size | 9/16-20 |
| Reservoir Included | Yes |
| Secondary Outlet Thread Diameter | 0.5 |
| Sensor Included | No |
This part fits 127 vehicles. Search below:
| Year | Make | Model | Fuel Type | Position | Notes |
|---|---|---|---|---|---|
| 1993 | Dodge | D150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1993 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1993 | Dodge | W150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1992 | Dodge | D150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1992 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1992 | Dodge | W150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1991 | Dodge | D150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1991 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1991 | Dodge | W150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1990 | Dodge | D150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1990 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1990 | Dodge | W150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1989 | Dodge | B150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1989 | Dodge | B250 | N/A | Bore size of 1.125 inches fits Vacuum Booster and Power Brakes. | |
| 1989 | Dodge | B350 | N/A | Bore size of 1.125 inches fits Vacuum Booster and Power Brakes. | |
| 1989 | Dodge | D100 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1989 | Dodge | D150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1989 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1989 | Dodge | W100 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1989 | Dodge | W150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1988 | Dodge | B150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1988 | Dodge | B250 | N/A | Bore size of 1.125 inches fits Vacuum Booster and Power Brakes. | |
| 1988 | Dodge | B350 | N/A | Bore size of 1.125 inches fits Vacuum Booster and Power Brakes. | |
| 1988 | Dodge | D100 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1988 | Dodge | D150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1988 | Dodge | D250 | N/A | Exc. 4,500 Lb. Axle; Bore: 1.125 In. | |
| 1988 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1988 | Dodge | W100 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1988 | Dodge | W150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1988 | Dodge | W250 | N/A | Exc. 4,500 Lb. Axle; Bore: 1.125 In. | |
| 1987 | Dodge | B150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1987 | Dodge | B250 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1987 | Dodge | B350 | N/A | Exc. School Bus; Bore: 1.125 In. | |
| 1987 | Dodge | D100 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1987 | Dodge | D150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1987 | Dodge | D250 | N/A | Exc. 4,500 Lb. Axle; Bore: 1.125 In. | |
| 1987 | Dodge | D350 | N/A | Exc. 4,500 Lb. Axle; Bore: 1.125 In. | |
| 1987 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1987 | Dodge | W100 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1987 | Dodge | W150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1987 | Dodge | W250 | N/A | Exc. 4,500 Lb. Axle; Bore: 1.125 In. | |
| 1986 | Dodge | B150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1986 | Dodge | B250 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1986 | Dodge | B350 | N/A | Exc. School Bus; Bore: 1.125 In. | |
| 1986 | Dodge | D100 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1986 | Dodge | D150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1986 | Dodge | D250 | N/A | Exc. 4,500 Lb. Axle; Bore: 1.125 In. | |
| 1986 | Dodge | D350 | N/A | Exc. 4,500 Lb. Axle; Bore: 1.125 In. | |
| 1986 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1986 | Dodge | W100 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1986 | Dodge | W150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1986 | Dodge | W250 | N/A | 3,500 Lb. Axle; Bore: 1.125 In. | |
| 1985 | Dodge | B150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1985 | Dodge | B250 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1985 | Dodge | B350 | N/A | Exc. School Bus; Bore: 1.125 In. | |
| 1985 | Dodge | D150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1985 | Dodge | D250 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1985 | Dodge | D350 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1985 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1985 | Dodge | W150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1985 | Dodge | W250 | N/A | 3,500 Lb. Axle; Bore: 1.125 In. | |
| 1985 | Dodge | W350 | N/A | Exc. 4,500 Lb. Axle; Bore: 1.125 In. | |
| 1984 | Dodge | B150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1984 | Dodge | B250 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1984 | Dodge | B350 | N/A | Exc. School Bus; Bore: 1.125 In. | |
| 1984 | Dodge | D150 | N/A | Aluminum; Bore: 1.125 In. | |
| 1984 | Dodge | D250 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1984 | Dodge | D350 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1984 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1984 | Dodge | W150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1984 | Dodge | W250 | N/A | 3,500 Lb. Axle; Bore: 1.125 In. | |
| 1984 | Dodge | W350 | N/A | Exc. 4,500 Lb. Axle; Bore: 1.125 In. | |
| 1983 | Dodge | B150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1983 | Dodge | B250 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1983 | Dodge | B350 | N/A | Exc. School Bus; Bore: 1.125 In. | |
| 1983 | Dodge | D150 | N/A | Aluminum; Bore: 1.125 In. | |
| 1983 | Dodge | D250 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1983 | Dodge | D350 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1983 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1983 | Dodge | W150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1983 | Dodge | W250 | N/A | 3,500 Lb. Axle; Bore: 1.125 In. | |
| 1983 | Dodge | W350 | N/A | Exc. 4,500 Lb. Axle; Bore: 1.125 In. | |
| 1983 | Plymouth | PB150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1983 | Plymouth | PB250 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1983 | Plymouth | PB350 | N/A | Exc. School Bus; Bore: 1.125 In. | |
| 1982 | Dodge | B150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1982 | Dodge | B250 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1982 | Dodge | B350 | N/A | Exc. School Bus; Bore: 1.125 In. | |
| 1982 | Dodge | D150 | N/A | Aluminum; Bore: 1.125 In. | |
| 1982 | Dodge | D250 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1982 | Dodge | D350 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1982 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1982 | Dodge | W150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1982 | Dodge | W250 | N/A | 3,500 Lb. Axle; Bore: 1.125 In. | |
| 1982 | Dodge | W350 | N/A | Exc. 4,500 Lb. Axle; Bore: 1.125 In. | |
| 1982 | Plymouth | PB150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1982 | Plymouth | PB250 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1982 | Plymouth | PB350 | N/A | Exc. School Bus; Bore: 1.125 In. | |
| 1981 | Dodge | B150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1981 | Dodge | B250 | N/A | Plastic Reservoir; Bore: 1.125 In. | |
| 1981 | Dodge | D150 | N/A | Aluminum; Bore: 1.125 In. | |
| 1981 | Dodge | D250 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1981 | Dodge | D350 | N/A | Aluminum; Bore: 1.125 In. | |
| 1981 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1981 | Dodge | W150 | N/A | Aluminum; Bore: 1.125 In. | |
| 1981 | Dodge | W250 | N/A | 3,500 Lb. Axle; Bore: 1.125 In. | |
| 1981 | Plymouth | PB150 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1981 | Plymouth | PB250 | N/A | Plastic Reservoir; Bore: 1.125 In. | |
| 1980 | Dodge | B100 | GAS | N/A | Compatible with drum brake systems with a 1.125" bore size. |
| 1980 | Dodge | B200 | N/A | Plastic Reservoir; Bore: 1.125 In. | |
| 1980 | Dodge | B300 | N/A | ||
| 1980 | Dodge | D150 | GAS | N/A | Aluminum; Bore: 1.125 In. |
| 1980 | Dodge | D200 | GAS | N/A | Compatible with drum brake systems with a 1.125" bore size. |
| 1980 | Dodge | D300 | N/A | Aluminum; Bore: 1.125 In. | |
| 1980 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1980 | Dodge | W150 | N/A | Aluminum; Bore: 1.125 In. | |
| 1980 | Dodge | W200 | N/A | Exc. 4,500 Lb. Axle; Bore: 1.125 In. | |
| 1979 | Dodge | B100 | GAS | N/A | Compatible with drum brake systems with a 1.125" bore size. |
| 1979 | Dodge | B200 | N/A | Plastic Reservoir; Bore: 1.125 In. | |
| 1979 | Dodge | B300 | N/A | ||
| 1979 | Dodge | D100 | GAS | N/A | Aluminum; Bore: 1.125 In. |
| 1979 | Dodge | D150 | GAS | N/A | Aluminum; Bore: 1.125 In. |
| 1979 | Dodge | D200 | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1979 | Dodge | D300 | N/A | Aluminum; Bore: 1.125 In. | |
| 1979 | Dodge | Ramcharger | N/A | Compatible with drum brake systems with a 1.125" bore size. | |
| 1979 | Dodge | W150 | N/A | Aluminum; Bore: 1.125 In. | |
| 1979 | Dodge | W200 | GAS | N/A | Exc. 4,500 Lb. Axle; Bore: 1.125 In. |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
10-18601186013-1860130.6700818M11825391783766183783-4000898895F98894M-87008M1860M900310MC98895
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.