Bring dependable hydraulic braking back to your Nissan with the Dorman – First Stop Brake Master Cylinder (M39805). It drops in as a direct-fit replacement for the 1989-1990 Nissan Pulsar NX [All] and 1989-1990 Nissan Sentra [All], converting brake-pedal force into the hydraulic pressure that operates the vehicle's brakes.
This unit features an aluminum body with a 0.813 in bore diameter and four outlets; the secondary and rearward outlet thread size is M10 x 1.0 with a 1 mm primary outlet thread pitch. The reservoir and sensor are included; mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether they may be reused. A leaking master cylinder or a brake pedal that slowly sinks under steady pressure are signs the original may need replacing. Country of origin: Taiwan.
Manufacturer part number M39805.
This part cross-references / interchanges with the following part numbers:
Will this master cylinder fit my vehicle?
It's a direct-fit replacement for the 1989-1990 Nissan Pulsar NX and 1989-1990 Nissan Sentra (all engines). Check the Buyer's Guide tab to confirm your exact vehicle.
Does it include a reservoir and sensor?
Yes—both the reservoir and the sensor are included. Mounting hardware is not included.
What is the housing made of?
The cylinder housing is aluminum, constructed to match the casting material of the original part, and all rubber components use EPDM for resistance to glycol-based brake fluid.
Is this a remanufactured part?
No. It's 100% new, made entirely of new materials rather than remanufactured, and built to meet SAE International standards.
What are the bore and outlet specifications?
It has a 0.813 in bore diameter with four outlets; the outlet thread size is M10 x 1.0, with a 1 mm primary outlet thread pitch.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.