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MPA Electrical B3427 Power Brake Booster
| Brand | MPA Electrical B3427 |
|---|---|
| Brake Service Grade | Standard replacement |
| Booster Type | Vacuum |
| Brake Pedal Rod Extension Included | No |
| Master Cylinder Included | No |
| Gasket Or Seal Included | No |
| Housing Material | Metal |
| Diaphragm Diameter | 217.17 |
| Diaphragm Diameter | 8.55 |
| Mounting Bracket Included | No |
| Front Seal Included | No |
| Master Cylinder Stud Thread Size (mm) | 8 x 1.25 |
| Mounting Stud Quantity | 2 |
| Product Condition | Remanufactured |
| Product line | Reman Vac Pwr Brake Booster w/o Master Cyl |
| Fits | Nissan · 1 vehicle |
Remanufactured unit. Restores vacuum-assisted braking with a standard replacement design.
Tested for performance. Each booster is end-of-line checked with proprietary equipment.
Metal housing. Built with a durable housing and vacuum booster construction.
Cross-references 4721005W10 for the same application. See all 1.
Overview
MPA Electrical B3427 is a remanufactured vacuum power brake booster built for direct brake assist replacement where the master cylinder is not included. It is engineered to deliver strong vacuum-assisted braking with reduced pedal effort and is tested at the end of production for consistent performance.
Key Features
- Vacuum booster design for power-assisted braking
- Standard replacement brake service grade
- Remanufactured metal housing
- 8.55 in. diaphragm diameter for brake assist output
- 8 x 1.25 mm master cylinder stud thread size
- Two mounting studs for secure installation
- Master cylinder, gasket, seal, and pedal rod extension not included
Product Details
This MPA Electrical brake booster is built as a remanufactured replacement for applications that use a vacuum-operated booster assembly. The B3427 is designed to restore braking assist by helping the driver apply the brakes with less pedal force while maintaining reliable vacuum sealing and pressure transfer. It cross-references 4721005W10 for the same application.
Compatible with 1981 Nissan 720, this power brake booster supports a direct replacement repair for a vehicle with reduced brake assist or a failed booster assembly. The metal housing and tested remanufactured construction make it a practical choice for restoring original braking function on the Nissan 720.
Common Repair Symptoms
- Hard brake pedal feel
- Reduced brake assist
- Vacuum leak at the booster
- Inconsistent pedal response
- Failed booster diaphragm or seal
Installation Notes
Verify master cylinder stud thread size, mounting stud layout, and booster-to-firewall fitment before installation. This unit does not include the master cylinder, gasket, seal, mounting bracket, or pedal rod extension, so reuse or source those components separately as required by the application. Confirm the brake system is properly bled and check for vacuum integrity after installation.
Quality Assurance
MPA Electrical subjects each unit to 100% end-of-line testing using proprietary test equipment to verify performance before release.
| Year | Make | Model | Drive Type | Notes |
|---|---|---|---|---|
| 1981 | Nissan | 720 | RWD | Reman Vac Pwr Brake Booster w/o Master Cyl |
| No rows match your filter. | ||||