Turn brake-pedal effort into the hydraulic pressure the braking system relies on with the Dorman First Stop Brake Master Cylinder M390467. As the heart of the hydraulic brake circuit, the master cylinder pressurizes brake fluid and sends it out through its two outlets to the wheel circuits. It drops in as a direct-fit replacement for the listed applications: the 1998-2002 Subaru Forester, 1998-2004 Subaru Legacy, 2001-2004 Subaru Outback, 2002-2007 Subaru Impreza, and the 2003 and 2005-2006 Subaru Baja (All engines).
Key features:
- 100% new: built entirely from new materials, not remanufactured.
- Aluminum housing: the cylinder housing is made to match the casting material of the original part for similar performance.
- Durable rubber: the rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- Built to spec: made to meet SAE International standards, with a 1.063 in bore and M10 x 1.0 outlet threads.
Includes the reservoir and a sensor. Mounting hardware is not included; consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: Taiwan. Manufacturer part number M390467.
Frequently Asked Questions
What does a brake master cylinder do?
It converts the force from your brake pedal into hydraulic pressure, sending pressurized brake fluid out through its outlets to the wheel brake circuits.
Does this master cylinder fit my vehicle?
It's a direct-fit replacement for the 1998-2002 Forester, 1998-2004 Legacy, 2001-2004 Outback, 2002-2007 Impreza, and 2003 and 2005-2006 Baja (All). See the Buyer's Guide tab for your year.
Does it come with a reservoir and sensor?
Yes. Per the catalog, this master cylinder includes the reservoir and a sensor. The package contents are the master cylinder.
Is mounting hardware included?
No, mounting hardware is not included. Consult the vehicle service information for the correct fasteners and whether they may be reused.
What are signs my master cylinder may need replacing?
A brake pedal that slowly sinks or feels soft, or brake fluid seeping near the unit, can be signs the master cylinder may need replacing. Diagnose the cause before replacing, as other parts can produce similar symptoms.