HomeBrake > Brake HydraulicsMPA Electrical NM55529 Brake Master Cylinder
Part #: NM55529

MPA Electrical NM55529 Brake Master Cylinder

New with front disc brakes
6 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
New with front disc brakes
Fitment: Scion, xA and xB
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Brake Master Cylinder for Scion xA and xB

Restore consistent brake pedal response with this new brake master cylinder from MPA Electrical. Built as a standard replacement for vehicles with front disc brakes, it is engineered for direct OE-style performance on 2004-2006 Scion xA and 2004-2006 Scion xB applications.

Part number NM55529 is a brake hydraulics component made from aluminum and filled with DOT 3 fluid compatibility requirements in mind. It is supplied with a gasket or seal and uses a 0.875-inch bore diameter for the specified brake system setup.

Key Features

  • Brand: MPA Electrical
  • Part number: NM55529
  • Brake master cylinder for brake hydraulics service
  • Standard replacement grade
  • Aluminum master cylinder construction
  • 0.875-inch bore diameter
  • Gasket or seal included
  • Designed for vehicles with front disc brakes
  • Compatible with DOT 3 brake fluid
  • New product condition

Detailed Description

MPA Electrical NM55529 is a replacement brake master cylinder engineered to restore braking performance by matching OE specifications through tested manufacturing processes and controlled quality checks. The aluminum body supports reliable hydraulic operation, while the 0.875-inch bore diameter and standard replacement design make it a practical choice for brake system repair on Scion xA and Scion xB models with front disc brakes. This part cross-references 4720752041 for the same application.

What It Helps Fix

  • Low or inconsistent brake pedal feel
  • Internal master cylinder leakage
  • Brake fluid loss at the hydraulic unit
  • Reduced braking response from worn seals
  • Brake system performance issues on Scion xA and Scion xB

Installation Notes and Tips

Verify vehicle fitment by year, make, model, and brake configuration before installation. This master cylinder does not include a reservoir, brake booster, push rod, mounting hardware, or mounting bracket, so reuse or source the required related components as needed. Bench bleeding is recommended before final installation, and the system should be filled and bled with DOT 3 brake fluid after mounting.

Quality Assurance

MPA Electrical tests brake master cylinders against OE specifications using proprietary processes and strict protocols to help ensure consistent braking performance out of the box. NM55529 is a new replacement part built for dependable hydraulic service on the listed Scion applications.

BrandMPA Electrical
Part NumberNM55529
PositionNew with front disc brakes
Mounting Hardware IncludedNo
Grade TypeStandard replacement
Gasket Or Seal IncludedYes
Mounting Hole Quantity2
Master Cylinder Bore Diameter0.875
Brake Booster IncludedNo
Master Cylinder Cap IncludedNo
Master Cylinder MaterialAluminum
Push Rod IncludedNo
Reservoir IncludedNo
Sensor IncludedNo
Mounting Hole Diameter0.370
Mounting Bracket IncludedNo
Brake Pressure Switch(s) IncludedNo
Fluid TypeDot 3
Product ConditionNew

This part fits 6 vehicles. Search below:

YearMakeModelPositionNotes
2006ScionxAN/ANew with front disc brakes
2006ScionxBN/ANew with front disc brakes
2005ScionxAN/ANew with front disc brakes
2005ScionxBN/ANew with front disc brakes
2004ScionxAN/ANew with front disc brakes
2004ScionxBN/ANew 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:

4720752041

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.