Dorman M390467 Brake Master Cylinder

Name: Dorman M390467 Brake Master Cylinder
Brand: Dorman
SKU: BKKX-M390467
Price: 119.16 USD
Availability: InStock

N/A

43 vehicles fit this part

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OE Direct Replacement — Bolt-on fit, no modifications needed

Fitment: Subaru, Impreza, Baja, Legacy, Outback, and Forester

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Not what you need? See all Brake Master Cylinder options

Reliable Brake Master Cylinder for Subaru Vehicles

The Dorman M390467 Brake Master Cylinder is engineered to restore proper brake hydraulics in select Subaru models. Designed with precision, this master cylinder includes a reservoir and sensor to ensure optimal brake system performance for your Subaru Baja, Forester, Impreza, Legacy, or Outback.

Master cylinder bore diameter: 1.063 inches for accurate hydraulic pressure
Constructed from durable aluminum material for corrosion resistance
Includes reservoir and sensor for complete brake system integration
Two outlets with rearward outlet size M10 x 1.0 and thread pitch 1.0
Secondary outlet thread diameter of 10 mm
Package contains the master cylinder only; mounting hardware not included

Product Details and Specifications

This Dorman brake master cylinder (part number M390467) is specifically designed for compatibility with Subaru models including the Baja, Forester, Impreza, Legacy, and Outback. The aluminum construction provides a lightweight yet durable component that resists corrosion and wear. The 1.063-inch bore diameter ensures precise hydraulic pressure delivery, critical for consistent brake pedal feel and stopping power. The included reservoir and sensor facilitate seamless integration with the vehicle’s brake system, supporting proper fluid management and brake warning functions. Featuring two outlets with a rearward outlet size of M10 x 1.0 and a thread pitch of 1.0, this master cylinder matches OEM specifications for reliable fitment and performance.

Common Applications and Problem Resolution

Restores brake pressure and pedal feel in Subaru Baja, Forester, Impreza, Legacy, and Outback
Replaces leaking or damaged master cylinders causing brake fluid loss
Addresses brake warning light issues related to sensor failure
Solves inconsistent braking or spongy brake pedal symptoms
Corrects internal seal wear leading to brake system inefficiency

Installation Notes and Tips

Installation of the Dorman M390467 master cylinder requires proper brake system bleeding to remove air and ensure optimal hydraulic function. Mounting hardware is not included, so reuse existing hardware or acquire appropriate fasteners. Verify thread pitch and outlet sizes match your vehicle’s brake lines before installation. It is recommended to inspect related brake components such as brake lines and calipers during replacement to maintain overall system integrity.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to long-term reliability. While mounting hardware is not included, the product undergoes quality checks to ensure proper operation. Warranty coverage details should be confirmed with the distributor or manufacturer to understand terms and conditions.

Brand	Dorman
Part Number	M390467
Master Cylinder Bore Diameter	1.063
Master Cylinder Material	Aluminum
Mounting Hardware Included	No
Number of Outlets	2
Package Contents	Master Cylinder
Rearward Outlet Size	M10 X 1.0
Reservoir Included	Yes
Secondary Outlet Thread Diameter	10
Sensor Included	Yes
Thread Pitch	1.0

This part fits 43 vehicles. Search below:

Year	Make	Model	Submodel	Drive Type	Transmission	Position	Notes
2007	Subaru	Impreza	Outback Sport		Automatic	N/A
2007	Subaru	Impreza	2.5i		Automatic	N/A
2006	Subaru	Baja	Sport			N/A
2006	Subaru	Impreza	Outback Sport		Automatic	N/A
2006	Subaru	Impreza	2.5i		Automatic	N/A
2005	Subaru	Baja	Sport			N/A
2005	Subaru	Impreza	Outback Sport		Automatic	N/A
2005	Subaru	Impreza	RS		Automatic	N/A
2004	Subaru	Impreza			Manual	N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
2004	Subaru	Legacy			Manual	N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
2004	Subaru	Outback				N/A	For vehicles with Vehicle Dynamic Control, 15/16 inch bore size.
2003	Subaru	Baja				N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
2003	Subaru	Impreza			Manual	N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
2003	Subaru	Legacy				N/A	For vehicles with Vehicle Dynamic Control, 15/16 inch bore size.
2003	Subaru	Outback				N/A	For vehicles with Vehicle Dynamic Control, 15/16 inch bore size.
2002	Subaru	Forester				N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
2002	Subaru	Impreza	RS			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
2002	Subaru	Impreza	TS			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
2002	Subaru	Impreza	WRX			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
2002	Subaru	Legacy				N/A	For vehicles with Vehicle Dynamic Control, 15/16 inch bore size.
2002	Subaru	Outback				N/A	For vehicles with Vehicle Dynamic Control, 15/16 inch bore size.
2001	Subaru	Forester				N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
2001	Subaru	Legacy				N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
2001	Subaru	Outback				N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
2000	Subaru	Forester				N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
2000	Subaru	Legacy	L			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
2000	Subaru	Legacy	GT Limited			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
2000	Subaru	Legacy	GT			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
1999	Subaru	Forester	S			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
1999	Subaru	Forester	L			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
1999	Subaru	Legacy	L			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
1999	Subaru	Legacy	Outback			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
1999	Subaru	Legacy	L 30th Anniversary			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
1999	Subaru	Legacy	SUS 30th Anniversary			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
1999	Subaru	Legacy	Outback Limited			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
1999	Subaru	Legacy	GT			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
1998	Subaru	Forester	S			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
1998	Subaru	Forester	L			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
1998	Subaru	Legacy	L			N/A	Fits 2 Wheel Drive vehicles with a 15/16 inch bore.
1998	Subaru	Legacy	L	AWD		N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
1998	Subaru	Legacy	Outback			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
1998	Subaru	Legacy	GT Limited			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.
1998	Subaru	Legacy	GT			N/A	Fits 15/16" bore size drum brakes on multiple vehicle models.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

072-928311-287313-2873130.470231344318M83126401AC19083-18023F134434M55023M55270M901065MC390467MC504430

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.