HomeBrake > Brake HydraulicsDorman M630194 Brake Master Cylinder
Part #: M630194

Dorman M630194 Brake Master Cylinder

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7 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Hyundai and Kia, Sonata and Optima
Easy Returns — Return within 60 days for a full refund
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Overview of Dorman Brake Master Cylinder M630194

The Dorman Brake Master Cylinder M630194 is designed specifically for Hyundai Optima and Kia Sonata models. This aluminum master cylinder includes a reservoir and sensor, engineered to maintain reliable brake hydraulics performance.

  • Master cylinder bore diameter: 1 inch
  • Constructed from durable aluminum material
  • Includes reservoir for fluid storage
  • Equipped with a sensor for brake system monitoring
  • Two outlet ports with secondary outlet thread diameter of 10 mm
  • Rearward outlet size: M10 x 1.0 with 1.0 thread pitch
  • Mounting hardware not included

Detailed Product Description

The Dorman M630194 brake master cylinder is a critical component in the brake hydraulics system for Hyundai Optima and Kia Sonata vehicles. Its 1-inch bore diameter ensures proper hydraulic pressure for effective braking. Made from aluminum, this master cylinder offers corrosion resistance and durability under typical operating conditions. The included reservoir allows for brake fluid storage, while the integrated sensor provides real-time feedback to the vehicle’s brake system for enhanced safety and performance. Featuring two outlets, including a secondary outlet with a 10 mm thread diameter and a rearward outlet sized M10 x 1.0, this master cylinder is designed to meet the specific hydraulic requirements of the compatible vehicles.

Common Applications and Issues Addressed

  • Restores proper brake fluid pressure in Hyundai Optima and Kia Sonata models
  • Replaces worn or leaking master cylinders causing brake pedal sponginess
  • Addresses brake fluid reservoir leaks or contamination
  • Resolves sensor-related brake warning light issues
  • Improves overall brake system responsiveness and safety

Installation Notes and Tips

  • Ensure compatibility with Hyundai Optima and Kia Sonata before installation
  • Brake system should be properly bled after installation to remove air
  • Mounting hardware is not included; reuse existing hardware or acquire separately
  • Handle brake fluid carefully to avoid contamination and damage to painted surfaces
  • Verify sensor connections for proper brake system communication

Quality Assurance and Warranty

Dorman manufactures the M630194 brake master cylinder to meet or exceed OEM specifications for Hyundai Optima and Kia Sonata vehicles. The aluminum construction and integrated sensor contribute to reliable brake system performance. While mounting hardware is not included, the product undergoes quality checks to ensure fit and function. Warranty details should be confirmed through the point of purchase or Dorman directly.

BrandDorman
Part NumberM630194
Master Cylinder Bore Diameter1
Master Cylinder MaterialAluminum
Mounting Hardware IncludedNo
Number of Outlets2
Package ContentsMaster Cylinder
Rearward Outlet SizeM10 X 1.0
Reservoir IncludedYes
Secondary Outlet Thread Diameter10
Sensor IncludedYes
Thread Pitch1.0

This part fits 7 vehicles. Search below:

YearMakeModelPositionNotes
2005HyundaiSonataN/A1" bore size brake master cylinder for vehicles without traction control.
2005KiaOptimaN/ACompatible with 1-inch bore drum brake wheel cylinders.
2004HyundaiSonataN/A1" bore size brake master cylinder for vehicles without traction control.
2004KiaOptimaN/ACompatible with 1-inch bore drum brake wheel cylinders.
2003HyundaiSonataN/A1" bore size brake master cylinder for vehicles without traction control.
2003KiaOptimaN/ACompatible with 1-inch bore drum brake wheel cylinders.
2002HyundaiSonataN/A1" bore size brake master cylinder for vehicles without traction control.

* 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:

072-972111-329913-3299130.5102713941585103D500F141685M55155MC390929MC511840

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