Dorman - First Stop Brake Master Cylinder P/N:M390004

Convert brake-pedal force into the hydraulic pressure that operates the brakes with the Dorman - First Stop Brake Master Cylinder M390004. It drops in as a direct-fit replacement for the 1991-1993 Nissan NX, 1991-1994 Nissan Sentra, and 1994-2009 Nissan Tsuru (All engines), and Dorman builds it to match the design, function, and performance of the original master cylinder on these applications.

• Cast-aluminum housing: built to match the original casting for similar performance.
• EPDM seals: all rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
• 100% new: made entirely from new materials, not remanufactured.
• Built to spec: made to meet rigorous SAE International standards.

This unit has four outlets and a 0.813 in bore; the secondary/rearward outlet uses an M10 x 1.0 thread (1 mm pitch). The fluid reservoir and level sensor are included; mounting hardware is not — consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: Taiwan. If a failing master cylinder is the cause of a sinking or spongy pedal, a brake-fluid leak at the cylinder, or a low-fluid warning, this replaces it; diagnose the cause before replacing.

Interchange: 18M547 · 83-04213 · 8304213 · M900753 · 100-3002 · 1003002 · M-51213 · M51213 · 072-8948 · 0728948 · 072-9009 · 0729009 · 12931 · 13-2603 · 132603 · 11-2603 · 112603 · 130.42213 · 131.42213 · MC128303 · 355-67019 · 35567019 · NM52581 · 4601063C00 · 4601063C10 · 4601063C20 · MC390004 · F128303. Manufacturer part number M390004.