Quality-Built NM55109 Premium New Brake Master Cylinder

The Quality-Built NM55109 is a premium new brake master cylinder engineered to restore factory braking performance and deliver consistent hydraulic pressure. Built entirely from new components — not remanufactured — this direct-fit replacement is manufactured to meet or exceed original equipment (OE) specifications for dependable, trouble-free operation.

Key Features:

• 100% Pressure Tested: Every unit is end-of-line tested on computerized equipment to verify optimal performance before leaving the factory
• OE-Quality Construction: Precision-machined castings and micro-finished bores and pistons provide smooth, consistent pedal feel and accurate brake modulation
• Leak-Resistant Seals: OE-grade EPDM seals and O-rings deliver reliable fluid control and long-term durability
• Durable Reservoir: High-strength, crack-resistant reservoir offers improved resistance to thermal fatigue and temperature fluctuations
• New Negative-Ground Switch: Eliminates the transfer of potentially faulty sensors, reducing the risk of misdiagnosis and future service requirements
• Direct-Fit Replacement: Engineered using an extensive OE sample library for hassle-free installation right out of the box

The Quality-Built NM55109 brake master cylinder is a fully new unit with no remanufactured components, designed to perform reliably in both city and highway driving conditions. It is an ideal OE-style replacement for restoring braking integrity and confidence.