HomeBrake > Brake HydraulicsDorman M630243 Brake Master Cylinder
Part #: M630243

Dorman M630243 Brake Master Cylinder

⚙️ 5 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$181.65Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mitsubishi, Lancer
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Brake Master Cylinder for Mitsubishi Lancer

The Dorman M630243 Brake Master Cylinder is engineered to restore proper brake hydraulics in your Mitsubishi Lancer. Designed with precision, this master cylinder includes a reservoir and sensor to ensure optimal brake system performance.

  • Master cylinder bore diameter: 0.875 inches for accurate hydraulic pressure
  • Constructed from durable aluminum material for corrosion resistance
  • Includes reservoir for fluid storage and sensor for system monitoring
  • Two outlet ports with rearward outlet size M10 x 1.0 and thread pitch 1.0
  • Compatible specifically with Mitsubishi Lancer models

Product Details and Specifications

This Dorman brake master cylinder (part number M630243) is crafted from aluminum, providing a lightweight yet sturdy component that resists corrosion and wear. The 0.875-inch bore diameter is designed to deliver consistent hydraulic pressure to your braking system. It features two outlets, including a secondary outlet with a 10 mm thread diameter and a rearward outlet sized M10 x 1.0, both with a 1.0 thread pitch, ensuring proper fitment and connection to your vehicle's brake lines. The included reservoir allows for brake fluid storage, while the integrated sensor helps monitor fluid levels or system status, contributing to safer braking operation.

Compatible Applications and Common Issues Addressed

  • Restores brake hydraulic pressure in Mitsubishi Lancer models
  • Replaces master cylinders with worn or leaking seals
  • Solves brake fluid reservoir leaks or sensor malfunctions
  • Addresses inconsistent brake pedal feel or sponginess
  • Fixes brake system failures related to master cylinder wear

Installation Notes and Tips

When installing the Dorman M630243 master cylinder, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Verify thread sizes and outlet connections match your vehicle’s brake lines. Since mounting hardware is not included, retain original fasteners or source compatible hardware separately. Proper sensor connection is essential for accurate brake fluid monitoring.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction offers durability and corrosion resistance for long service life. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in materials and workmanship.

BrandDorman
Part NumberM630243
Mounting Hardware IncludedNo
Master Cylinder Bore Diameter0.875
Master Cylinder MaterialAluminum
Reservoir IncludedYes
Secondary Outlet Thread Diameter10
Sensor IncludedYes
Number of Outlets2
Package ContentsMaster cylinder
Rearward Outlet SizeM10 x 1.0
Thread Pitch1.0

This part fits 5 vehicles. Search below:

YearMakeModelBody TypeTransmissionLitersCylindersPositionNotes
2006MitsubishiLancerAutomatic2.0LL4N/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2005MitsubishiLancerAutomatic2.0LL4N/A
2004MitsubishiLancerSedanAutomatic2.0LL4N/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2003MitsubishiLancerAutomaticN/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2002MitsubishiLancerN/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.

* 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:

072-963711-343213-3432130.46522F142459M901261MC390761MR527469

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