HomeBrake > Brake HydraulicsDorman M630540 Brake Master Cylinder
Part #: M630540

Dorman M630540 Brake Master Cylinder

⚙️ 5 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Nissan, Sentra
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Reliable Brake Master Cylinder for Nissan Sentra

The Dorman M630540 brake master cylinder is designed specifically for Nissan Sentra models, providing precise hydraulic control for your vehicle's braking system. This master cylinder features a durable aluminum construction and includes a reservoir and sensor to ensure optimal performance.

  • Master cylinder bore diameter: 0.938 inches for accurate hydraulic pressure
  • Constructed from lightweight, corrosion-resistant aluminum
  • Includes reservoir for brake fluid storage
  • Equipped with a sensor for brake system monitoring
  • Two outlet ports with rearward outlet size M10 x 1.0 and thread pitch 1.0

Product Details and Specifications

The Dorman M630540 brake master cylinder is engineered to meet the hydraulic demands of Nissan Sentra vehicles. Its 0.938-inch bore diameter ensures consistent brake fluid pressure, while the aluminum material offers strength and resistance to corrosion. The included reservoir allows for proper brake fluid containment, and the integrated sensor supports brake system diagnostics. Featuring two outlets with a secondary outlet thread diameter of 10 mm and a rearward outlet size of M10 x 1.0, this master cylinder is designed for precise brake line connections. Note that mounting hardware is not included with this part.

Compatible Nissan Sentra Brake System Applications

  • Replacement for worn or leaking brake master cylinders
  • Restores proper brake fluid pressure and pedal feel
  • Addresses brake fluid reservoir leaks or damage
  • Resolves brake warning light issues related to sensor failure
  • Improves brake system reliability and safety

Installation Notes and Tips

When installing the Dorman M630540 brake master cylinder on a Nissan Sentra, ensure the brake fluid reservoir is properly filled and free of contaminants. Bleed the brake system thoroughly to remove air and verify sensor connections for accurate brake system monitoring. Use appropriate tools for the M10 x 1.0 threaded outlets to avoid damage. Since mounting hardware is not included, retain original hardware or source compatible fasteners.

Quality Assurance and Warranty

Dorman manufactures the M630540 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to long-term durability and reliable brake performance. This part is backed by Dorman's quality assurance processes; please refer to Dorman's official warranty policy for specific coverage details.

BrandDorman
Part NumberM630540
Mounting Hardware IncludedNo
Master Cylinder Bore Diameter0.938
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:

YearMakeModelLitersCylindersPositionNotes
2006NissanSentra2.5LL4N/AFits 15/16" bore size drum brakes on multiple vehicle models.
2005NissanSentra2.5LL4N/AFits 15/16" bore size drum brakes on multiple vehicle models.
2004NissanSentra2.5LL4N/AFits 15/16" bore size drum brakes on multiple vehicle models.
2003NissanSentra2.5LL4N/AFits 15/16" bore size drum brakes on multiple vehicle models.
2002NissanSentra2.5LL4N/AFits 15/16" bore size drum brakes on multiple vehicle models.

* 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:

11-321013-3210460104Z720F140699MC390748NM55160A

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