MPA Electrical NM55419 Brake Master Cylinder

Brake Master Cylinder for Toyota and Lexus

Restore consistent brake pedal response with this MPA Electrical brake master cylinder, part number NM55419. It is a standard replacement unit built with an aluminum body, plastic reservoir, and DOT 3 fluid compatibility for vehicles equipped with front disc brakes.

Compatible With 2006-2018 Toyota RAV4, 2015-2017 Lexus NX200t, and 2018-2021 Lexus NX300 with front disc brakes. This NM55419 master cylinder is built to match OE-style fitment and braking function for common Toyota and Lexus applications.

Key Features

• Brand: MPA Electrical
• Part number: NM55419
• Brake master cylinder for brake hydraulics service
• Aluminum master cylinder body with plastic reservoir
• Reservoir included with cap and gasket/seal included
• Standard replacement grade
• Master cylinder bore diameter: 0.877 in.
• Fluid type: DOT 3
• Two mounting holes; mounting hardware not included
• Brake booster, push rod, sensor, and brake pressure switch not included

Product Details

MPA Electrical NM55419 is engineered to restore braking performance by replacing a worn or leaking master cylinder with a direct-fit hydraulic component. The unit is tested against OE specifications using controlled processes and sample-based validation, helping deliver consistent brake pedal feel and hydraulic response after installation. This part cross-references Toyota 47201-42382 for the same application.

What It Helps Address

• Low or sinking brake pedal feel
• Internal master cylinder leakage
• Brake fluid loss at the master cylinder
• Uneven hydraulic pressure delivery
• Delayed or inconsistent brake response

Installation Notes

Verify vehicle fitment by year, make, model, and brake configuration before installation. This master cylinder uses a 2-hole mounting pattern and is intended for vehicles with front disc brakes. Bench bleeding and a full brake system bleed are recommended after installation to remove trapped air and restore proper pedal feel. Mounting hardware, brake booster, push rod, sensor, and brake pressure switch are not included.

Quality Assurance

MPA Electrical tests each unit against OE specifications using proprietary procedures and strict inspection protocols to support consistent braking performance out of the box. Part number NM55419 is a new standard replacement master cylinder for Toyota RAV4 and Lexus NX applications.