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OE Quality
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MPA Electrical NM55489 Brake Master Cylinder
Brake Master Cylinder for Hyundai Elantra
Restore consistent brake pedal response with this MPA Electrical brake master cylinder, part number NM55489. It is a standard replacement unit for 2008-2010 Hyundai Elantra models with front disc brakes, built with an aluminum master cylinder body, plastic reservoir, and included reservoir cap.
MPA Electrical NM55489 is engineered for direct brake hydraulic service on the 2008, 2009, and 2010 Hyundai Elantra. This brake master cylinder uses a 0.809 bore diameter, accepts DOT 3 or DOT 4 fluid, and is supplied as a new replacement part with the reservoir included.
Key Features
- Fits 2008-2010 Hyundai Elantra, new with front disc brakes
- Standard replacement brake master cylinder
- Aluminum master cylinder construction with plastic reservoir
- 0.809 bore diameter for OE-style hydraulic performance
- Reservoir and master cylinder cap included
- Designed for DOT 3 or DOT 4 brake fluid
- Two mounting holes; 0.341 mounting hole diameter
- New part condition
Detailed Description
This brake master cylinder is built to restore hydraulic pressure in the braking system of the Hyundai Elantra. MPA Electrical uses OE sample data and testing protocols to verify dimensional and functional consistency against original specifications, helping ensure proper pedal feel and brake response after replacement. Part number NM55489 is a direct-fit service part for 2008-2010 Hyundai Elantra vehicles equipped with front disc brakes.
The unit includes the reservoir and cap, while the brake booster, push rod, mounting hardware, gasket or seal, sensor, mounting bracket, and brake pressure switch are not included. This part cross-references Hyundai OE number 585102H500 for the same application.
What It Helps Fix
- Low or inconsistent brake pedal pressure
- Internal master cylinder leakage
- Brake fluid bypass causing poor pedal hold
- Spongy braking response after hydraulic wear
- Loss of braking performance from a worn master cylinder
Installation Notes and Tips
Before installation, confirm the vehicle is a 2008-2010 Hyundai Elantra with front disc brakes and verify fluid compatibility with DOT 3 or DOT 4 brake fluid. Bench bleeding the master cylinder before final installation helps remove trapped air from the hydraulic circuit. Inspect the brake lines, booster interface, and fluid condition during service to reduce repeat repairs.
Quality Assurance
MPA Electrical brake master cylinders are tested against OE specifications using controlled inspection and validation processes. NM55489 is a new standard replacement part designed for consistent hydraulic performance in the 2008-2010 Hyundai Elantra brake system.
| Brand | MPA Electrical |
|---|---|
| Part Number | NM55489 |
| Position | New with front disc brakes |
| Reservoir Material | Plastic |
| Mounting Hardware Included | No |
| Grade Type | Standard replacement |
| Gasket Or Seal Included | No |
| Mounting Hole Quantity | 2 |
| Master Cylinder Bore Diameter | 0.809 |
| Brake Booster Included | No |
| Master Cylinder Cap Included | Yes |
| Master Cylinder Material | Aluminum |
| Push Rod Included | No |
| Reservoir Included | Yes |
| Sensor Included | No |
| Mounting Hole Diameter | 0.341 |
| Mounting Bracket Included | No |
| Brake Pressure Switch(s) Included | No |
| Fluid Type | Dot 3 or dot 4 |
| Product Condition | New |
This part fits 3 vehicles. Search below:
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2010 | Hyundai | Elantra | SE | N/A | New with front disc brakes |
| 2009 | Hyundai | Elantra | SE | N/A | New with front disc brakes |
| 2008 | Hyundai | Elantra | SE | N/A | New with front disc brakes |
* 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.