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MPA Electrical B4218 Power Brake Booster
Remanufactured Brake Booster for Mazda 3
MPA Electrical B4218 is a remanufactured power brake booster for 2014-2018 Mazda 3 applications without a master cylinder. It is built for standard replacement service and is engineered to deliver strong braking assist with reduced pedal effort.
For Mazda 3 brake booster replacement needs, B4218 combines remanufactured construction with treated replacement components to support vacuum sealing, pressure transfer, and consistent brake assist. This part number is also referenced as B4218 for ordering and catalog lookup.
Key Features
- Remanufactured power brake booster
- Standard replacement brake service grade
- Fits 2014-2018 Mazda 3, N/A
- Brake pedal rod extension included
- Metal housing for durable brake system service
- Master cylinder not included
- 8x1.25 master cylinder stud thread size
- 2 mounting studs
- Part number B4218
Product Details
MPA Electrical reman vac power brake booster B4218 is built for drivers who need dependable brake assist in a direct replacement format. The unit is tested at the end of the production process with proprietary equipment to verify performance before release. It is designed for 2014, 2015, 2016, 2017, and 2018 Mazda 3 models and is supplied without a master cylinder, gasket, seal, front seal, or mounting bracket.
This part cross-references Monroe Shocks & Struts (e.g., BHY14380Z) for the same application.
What It Helps Address
- Hard brake pedal feel
- Reduced brake assist
- Vacuum seal loss in the booster assembly
- Inconsistent pressure transfer during braking
- Brake booster replacement on a Mazda 3
Installation Notes
Verify the vehicle’s brake booster configuration before installation and confirm the master cylinder stud thread size matches 8x1.25. Because the master cylinder is not included, transfer or source the correct master cylinder separately. Inspect the pedal rod connection, mounting points, and vacuum line condition during service on 2014-2018 Mazda 3 brake booster replacement jobs.
Quality Assurance
MPA Electrical subjects each unit to 100% end-of-line testing using proprietary test equipment. The remanufacturing process uses new replacement and specially treated components to support vacuum sealing, pressure transfer, and consistent brake assist performance.
| Brand | MPA Electrical |
|---|---|
| Part Number | B4218 |
| Position | Reman Vac Pwr Brake Booster w/o Master Cyl |
| Brake Service Grade | Standard replacement |
| Brake Pedal Rod Extension Included | Yes |
| Master Cylinder Included | No |
| Gasket Or Seal Included | No |
| Housing Material | Metal |
| Mounting Bracket Included | No |
| Front Seal Included | No |
| Master Cylinder Stud Thread Size (mm) | 8x1.25 |
| Mounting Stud Quantity | 2 |
| Product Condition | Remanufactured |
This part fits 5 vehicles. Search below:
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2018 | Mazda | 3 | Touring | N/A | Reman Vac Pwr Brake Booster w/o Master Cyl |
| 2017 | Mazda | 3 | Touring | N/A | Reman Vac Pwr Brake Booster w/o Master Cyl |
| 2016 | Mazda | 3 | s Touring | N/A | Reman Vac Pwr Brake Booster w/o Master Cyl |
| 2015 | Mazda | 3 | s Touring | N/A | Reman Vac Pwr Brake Booster w/o Master Cyl |
| 2014 | Mazda | 3 | s Touring | N/A | Reman Vac Pwr Brake Booster w/o Master Cyl |
* 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.