Brake Master Cylinder Assembly for Nissan Light-Duty Applications

Keep your Nissan stopping strong with this master cylinder assembly. It delivers stable hydraulic pressure to all four wheels, turning pedal force into smooth, controlled braking. Built to OEM spec for bore size and port threads, it fits right the first time, works with ABS, and resists corrosion for long service ️.

Why you need it

A healthy master cylinder keeps pedal travel consistent, splits pressure between front and rear circuits, and prevents fade under load. It protects calipers, wheel cylinders, and the booster by feeding clean, even pressure.

How it works

Press the pedal, the pushrod moves primary and secondary pistons. These pistons compress brake fluid and send pressure through two separate circuits. Return springs and internal seals reset the pistons when you release, keeping the system primed.

What happens if it’s failing

Soft or sinking pedal, longer stopping distance, warning light, fluid leak at the booster, or spongy feel. Internal bypass can cause uneven braking; external leaks drain fluid and can damage paint. In severe cases, you may lose one circuit and braking power drops sharply.

Pro tips

Always bench-bleed before install, use the specified DOT fluid, flush old fluid, and torque lines correctly. After fitting, bleed all wheels and verify pedal hold with steady pressure ✅.

Compatibility

• Np300
• Truck
• Truck Eg