HomeBrake > Brake HydraulicsMPA Electrical NM55470 Brake Master Cylinder
Part #: NM55470

MPA Electrical NM55470 Brake Master Cylinder

New with front disc brakes
10 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
New with front disc brakes
Fitment: Subaru, Legacy and Outback
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Brake Master Cylinder for Subaru Legacy and Outback

Restore consistent brake pedal response with this MPA Electrical brake master cylinder, part number NM55470. It is a standard replacement unit for 2010-2014 Subaru Legacy and 2010-2014 Subaru Outback models with front disc brakes.

Built with an aluminum master cylinder body, plastic reservoir, and included cap, this replacement brake master cylinder is engineered to match OE specifications for dependable hydraulic performance. The bore diameter measures 0.937, and the unit uses a 2-hole mounting pattern with a 0.342 mounting hole diameter.

Key Features

  • Fits 2010-2014 Subaru Legacy, front disc brakes
  • Fits 2010-2014 Subaru Outback, front disc brakes
  • Standard replacement brake master cylinder
  • Aluminum master cylinder construction
  • Plastic reservoir with reservoir included
  • Master cylinder cap included
  • 0.937 bore diameter
  • 2 mounting holes with 0.342 mounting hole diameter
  • New condition

Product Details

MPA Electrical NM55470 is a brake master cylinder for Subaru Legacy and Subaru Outback applications that require front disc brakes. MPA Electrical uses OE sample data and testing protocols to verify dimensional and performance consistency against original specifications, helping ensure proper hydraulic operation after installation. This part cross-references Monroe Shocks & Struts (e.g., 26401-AJ002) for the same application.

Common Issues This Part Can Address

  • Low or inconsistent brake pedal feel
  • Internal hydraulic leakage in the master cylinder
  • Brake fluid loss at the master cylinder assembly
  • Uneven or delayed brake pressure delivery
  • Brake warning symptoms related to master cylinder wear

Installation Notes

Verify vehicle fitment by year, make, model, and brake configuration before installation. This unit does not include mounting hardware, gasket or seal, push rod, brake booster, sensor, or brake pressure switch. Bleed the brake system thoroughly after installation and inspect all hydraulic connections for leaks.

Quality Assurance

This MPA Electrical brake master cylinder is tested against OE specifications using controlled inspection and validation processes to support consistent braking performance out of the box.

BrandMPA Electrical
Part NumberNM55470
PositionNew with front disc brakes
Reservoir MaterialPlastic
Mounting Hardware IncludedNo
Grade TypeStandard replacement
Gasket Or Seal IncludedNo
Mounting Hole Quantity2
Master Cylinder Bore Diameter0.937
Brake Booster IncludedNo
Master Cylinder Cap IncludedYes
Master Cylinder MaterialAluminum
Push Rod IncludedNo
Reservoir IncludedYes
Sensor IncludedNo
Mounting Hole Diameter0.342
Mounting Bracket IncludedNo
Brake Pressure Switch(s) IncludedNo
Product ConditionNew

This part fits 10 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2014SubaruLegacyN/ANew with front disc brakes
2014SubaruOutback3.6LH6N/ANew with front disc brakes
2013SubaruLegacyN/ANew with front disc brakes
2013SubaruOutbackN/ANew with front disc brakes
2012SubaruLegacyN/ANew with front disc brakes
2012SubaruOutbackN/ANew with front disc brakes
2011SubaruLegacyN/ANew with front disc brakes
2011SubaruOutbackN/ANew with front disc brakes
2010SubaruLegacyN/ANew with front disc brakes
2010SubaruOutbackN/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:

26401-AJ002

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