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Dorman M39782 Brake Master Cylinder
Reliable Brake Master Cylinder for Isuzu Amigo and Pickup
The Dorman M39782 brake master cylinder is engineered to restore proper brake hydraulics for your Isuzu Amigo or Pickup. Designed with precision, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.
Key Features of the Dorman M39782 Brake Master Cylinder
- Master cylinder bore diameter of 1 inch for accurate fluid displacement
- Durable aluminum construction for corrosion resistance and longevity
- Includes reservoir for brake fluid storage and monitoring
- Equipped with a sensor to support brake system diagnostics
- Two outlets with a secondary outlet thread diameter of 10 mm (M10 x 1.0 thread pitch)
- Rearward outlet size specified as M10 x 1.0 for precise fitment
- Package contains the master cylinder unit only; mounting hardware not included
Detailed Product Description
The Dorman M39782 brake master cylinder is designed specifically for Isuzu Amigo and Pickup models, providing a direct replacement for the original component. Its aluminum body offers enhanced durability and resistance to corrosion, which is critical for maintaining brake system integrity over time. The 1-inch bore diameter ensures proper hydraulic pressure is maintained, while the included reservoir allows for efficient brake fluid management. The integrated sensor supports vehicle brake system monitoring, helping to detect issues early. With two outlets and a secondary outlet thread diameter of 10 mm, this master cylinder fits precisely with the brake lines of compatible Isuzu vehicles.
Common Applications and Issues Addressed
- Restores brake fluid pressure for consistent braking performance
- Replaces worn or leaking master cylinders causing brake fluid loss
- Resolves brake pedal sinking or sponginess due to internal seal failure
- Supports brake system sensor functionality for warning light accuracy
- Addresses corrosion-related master cylinder failures in older vehicles
Installation Notes and Tips
- Ensure compatibility with Isuzu Amigo and Pickup models before installation
- Bleed the brake system thoroughly after installation to remove air
- Check all brake line connections for proper thread engagement (M10 x 1.0)
- Use appropriate brake fluid as specified by the vehicle manufacturer
- Verify sensor connection to maintain brake system diagnostics
Quality Assurance and Warranty
Dorman manufactures the M39782 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to reliable brake system operation. While specific warranty details are not provided here, Dorman products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the supplier for exact warranty terms.
| Brand | Dorman |
| Part Number | M39782 |
| Mounting Hardware Included | No |
| Master Cylinder Bore Diameter | 1 |
| Master Cylinder Material | Aluminum |
| Reservoir Included | Yes |
| Secondary Outlet Thread Diameter | 10 |
| Sensor Included | Yes |
| Number of Outlets | 2 |
| Package Contents | Master cylinder |
| Rearward Outlet Size | M10 x 1.0 |
| Thread Pitch | 1.0 |
This part fits 5 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1991 | Isuzu | Amigo | 2.6L | L4 | N/A | Compatible with 1-inch bore drum brake wheel cylinders. |
| 1990 | Isuzu | Amigo | 2.6L | L4 | N/A | Compatible with 1-inch bore drum brake wheel cylinders. |
| 1989 | Isuzu | Amigo | 2.6L | L4 | N/A | Compatible with 1-inch bore drum brake wheel cylinders. |
| 1989 | Isuzu | Pickup | 2.6L | L4 | N/A | Compatible with 1-inch bore drum brake wheel cylinders. |
| 1988 | Isuzu | Pickup | 2.6L | L4 | N/A | Compatible with 1-inch bore drum brake wheel cylinders. |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.