Dorman M390178 brake master cylinder for the 1992-1996 Chevrolet Lumina APV and other vehicles turns pedal force into hydraulic pressure for the brakes.
- Part of the Dorman First Stop line
- Aluminum housing with a 24 mm bore diameter
- All rubber components are EPDM compound, which resists glycol-based brake fluid
- Made entirely of new materials
- Made to meet rigorous SAE International standards
Quick facts
- Part: Dorman M390178 brake master cylinder
- Fits: 1992-1996 Chevrolet Lumina APV and other vehicles
- Material: Aluminum
- Condition: New
A brake pedal that feels soft or sinks, fluid leaking around the cylinder, or a brake warning light can mean a master cylinder is wearing out. These signs alone do not prove this part is the problem; a leaking brake line or caliper is another common cause.
Fits
This master cylinder is a direct-fit replacement for the 1992-1996 Chevrolet Lumina APV, the 1992-1996 Oldsmobile Silhouette and the 1992-1996 Pontiac Trans Sport. Only one is needed per vehicle.
Specifications
Fit and size
- Quantity per vehicle: 1
- Bore diameter: 24 mm
- Number of outlets: 2
- Rearward outlet size: M10 x 1.0
- Secondary outlet thread diameter: M10 x 1.0
- Primary outlet thread pitch: 1 mm
Build and materials
- Material: Aluminum
- Reservoir: included
- Sensor: included
- Condition: New
- Country of origin: China
In the box
One master cylinder with its reservoir and sensor. Mounting hardware is not included, so plan on new fasteners.
Interchange: 174-690 · 100-2987 · 13-2609 · 10-2609 · 130.66028 · 131.66028
18M673 · M900888 · 12908 · 18018829 · M3012 · NM3012 · MC390178 · F131058 · F131368 · MC131058 · MC131368
This part cross-references / interchanges with the following part numbers:
174-690, 18M673, M900888, 100-2987, 12908, 13-2609, 10-2609, 130.66028, 131.66028, 18018829, M3012, NM3012, MC390178, F131058, F131368, MC131058, MC131368
Frequently Asked Questions
Does the Dorman M390178 fit the 1992-1996 Pontiac Trans Sport?
Yes. Dorman M390178 is listed for the 1992-1996 Pontiac Trans Sport, and one master cylinder is needed per vehicle.
Does this Dorman master cylinder come with the reservoir and sensor?
Yes. The Dorman M390178 includes the reservoir and the sensor. Mounting hardware is not included, so plan on new fasteners.
What is the bore size of this Dorman brake master cylinder?
This brake master cylinder has a 24 mm bore diameter and two outlets. The rearward outlet and the secondary outlet are both M10 x 1.0.
Are the rubber parts in this master cylinder made for glycol-based brake fluid?
Yes. All rubber components are made of EPDM compound, which resists glycol-based brake fluid.
Does the Dorman M390178 meet SAE standards?
Yes. It is made to meet rigorous SAE International standards and has an aluminum housing.
