Dorman M390121 brake master cylinder for the 1991-1994 Nissan Maxima turns pedal force into hydraulic pressure for the brakes. This Dorman brake master cylinder is engineered to follow the design, function and performance of the original unit.
- Made entirely of new materials
- Aluminum cylinder housing
- EPDM rubber components that resist glycol-based brake fluid
- Built to meet SAE International standards
- Part of the Dorman First Stop line
Quick facts
- Part: Dorman M390121 brake master cylinder
- Fits: 1991-1994 Nissan Maxima
- Material: Aluminum
- Condition: New
A brake pedal that feels soft or sinks slowly, or brake fluid showing at the cylinder, can mean the master cylinder is worn, though a leaking brake hose or a caliper can be behind the same signs.
Fits
This direct-fit replacement is sold as a single unit, and the 1991-1994 Nissan Maxima takes one.
Specifications
Fit and size
- Bore diameter: 0.938 in
- Number of outlets: 4
- Rearward outlet size: M10 x 1.0
- Secondary outlet thread diameter: M10 x 1.0
- Primary outlet thread pitch: 1 mm
- Quantity per vehicle: 1
Build and materials
- Material: Aluminum
- Reservoir: included
- Sensor: included
- Condition: New
- Country of origin: Taiwan
In the box
One master cylinder with its reservoir and sensor. Mounting hardware is not included, so plan on new fasteners rather than reusing the old ones.
Interchange: 100-1436 · 072-8988 · 13-2630 · 11-2630 · 130.42403 · 131.42403
18M635 · M900845 · 12527 · MC502970 · M52630 · NM52630 · 4601085E60 · MC390121 · F119288 · F120789 · F128175 · MC128175
This part cross-references / interchanges with the following part numbers:
18M635, M900845, 100-1436, 072-8988, 12527, 13-2630, 11-2630, 130.42403, 131.42403, MC502970, M52630, NM52630, 4601085E60, MC390121, F119288, F120789, F128175, MC128175
Frequently Asked Questions
Is Dorman M390121 a Nissan Maxima brake master cylinder for the 1991-1994 model years?
Yes. Dorman M390121 is listed for the 1991-1994 Nissan Maxima, and that car takes one master cylinder.
Does this Dorman master cylinder come with the reservoir?
Yes. The cylinder comes with its reservoir and a sensor. Mounting hardware is not included.
What size are the outlets on Dorman M390121?
Dorman M390121 has four outlets. The rearward outlet and the secondary outlet thread are both M10 x 1.0, and the primary outlet thread pitch is 1 mm.
What signs can a worn aluminum brake master cylinder show?
A soft or slowly sinking brake pedal, or brake fluid leaking at the cylinder, can mean it is worn. Have the brakes checked promptly if either shows up.
Are the rubber parts in this master cylinder made for glycol-based brake fluid?
Yes. All the rubber components are made of EPDM compound for resistance to glycol-based brake fluid, and the housing is aluminum.
