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Dorman - First Stop Brake Master Cylinder P/N:M390342
$169.99
Turn every push of the brake pedal into the hydraulic pressure your braking system relies on with the Dorman - First Stop Brake Master Cylinder M390342. It drops in as a direct-fit replacement for the 1997-2001 Infiniti QX4 [All] and the 1996-2001 Nissan Pathfinder [All], and it is precision-engineered to match the design, function, and performance of the original master cylinder on these listed applications.
- Aluminum housing: built to match the casting material of the original part for comparable performance.
- EPDM rubber components: all rubber parts use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- 100% new: made entirely of new materials, not remanufactured.
- Specs: two outlets, a 1 in bore, and M10 x 1.0 outlet threads (1 mm primary pitch); reservoir and sensor included. Made to meet SAE International standards.
The master cylinder converts pedal force into the hydraulic pressure sent to the brake circuits. Signs the original may need replacing include a sinking or spongy pedal, brake-fluid leaks, or reduced braking response — diagnose the cause before replacing. Mounting hardware is not included; consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: Taiwan.
Interchange: 83-04316 · 8304316 · M901015 · 100-1415 · 1001415 · M-51316 · M51316 · 072-9209 · 0729209 · 13-2780 · 132780 · 11-2780 · 112780 · 11-3567 · 113567 · 130.42316 · 13042316 · 131.42316 · 13142316 · MC503960 · 355-67041 · 35567041 · M52780 · M55075 · NM52780 · NM55075 · 460100W002 · 460100W022 · 460103W420 · MC390342 · MC390948 · F134560 · MC134560. Manufacturer part number M390342.
This part cross-references / interchanges with the following part numbers:
83-04316, M901015, 100-1415, M-51316, 072-9209, 13-2780, 11-2780, 11-3567, 130.42316, 131.42316, MC503960, 355-67041, M52780, M55075, NM52780, NM55075, 460100W002, 460100W022, 460103W420, MC390342, MC390948, F134560, MC134560
Frequently Asked Questions
What does this master cylinder do?
It converts the force from your brake pedal into hydraulic pressure and distributes it to the brake circuits through its two outlets.
Which vehicles does the M390342 fit?
It is a direct-fit replacement for the 1997-2001 Infiniti QX4 [All] and the 1996-2001 Nissan Pathfinder [All]. Check the Buyer's Guide tab to confirm your vehicle.
Does it come with a reservoir and sensor?
Yes. This master cylinder includes the reservoir and the sensor. Mounting hardware is not included.
What are the bore and outlet specifications?
It has a 1 in bore, two outlets, and M10 x 1.0 outlet threads with a 1 mm primary outlet thread pitch.
What are signs the master cylinder may need replacing?
A sinking or spongy pedal, brake-fluid leaks, or reduced braking response can point to a failing master cylinder. Diagnose the cause before replacing.
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Dorman
Dorman - First Stop Brake Master Cylinder P/N:M390342
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