Replace a leaking or worn 1996-1997 Nissan Pickup master cylinder with the Dorman First Stop Brake Master Cylinder M390344, designed to turn pedal effort into hydraulic pressure for the brake system. It is a direct-fit replacement for the 1996-1997 Nissan Pickup with all engines. Dorman precision-engineers it to match the original master cylinder's design, function and performance, and builds it from new, high-quality materials as a safe, durable replacement.
Specifications: 1 in bore diameter; three outlets; M10 x 1.0 rearward and secondary outlets; 1 mm primary outlet thread pitch; reservoir and sensor included; mounting hardware not included. Country of origin: Taiwan.
Signs this part may need replacing: brake fluid seeping from the master cylinder, a soft or sinking brake pedal, or a fluid level that keeps dropping. Other hydraulic components can cause similar symptoms, so diagnose the cause before you replace the part. After installation, bleed the brake system following the vehicle service information.
Interchange: 83-04319 · 100-1418 · M-51319 · 13-2783 · 11-2658 · 11-2783 · 130.42319 · 355-67043
8304319 · 1001418 · M51319 · 132783 · 112658 · 112783 · 13042319 · 35567043 · 18M786 · M901017 · 13236 · MC503980 · M52658 · NM52658 · 460101S710 · MC390344 · F141854 · MC141854
This part cross-references / interchanges with the following part numbers:
Which vehicles does the Dorman M390344 fit?
It is listed for the 1996-1997 Nissan Pickup, all engines, and each vehicle uses one master cylinder.
Does this master cylinder come with a reservoir?
Yes, the M390344 includes the reservoir and a sensor; mounting hardware is not included.
What are the bore and outlet specifications?
It has a 1 in bore and three outlets. The rearward and secondary outlets use M10 x 1.0 threads, and the primary outlet has a 1 mm thread pitch.
What are signs a master cylinder may need replacing?
Common signs are fluid seeping at the master cylinder, a soft or sinking brake pedal, and a dropping fluid level. Lines, calipers or wheel cylinders can cause similar symptoms, so diagnose the cause first.
Do I need to bleed the brakes after installing it?
Yes, a replacement master cylinder is normally bench-bled before installation and the brake system bled afterward. Follow the vehicle service information for the procedure and the correct brake fluid.
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.
