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Standard Ignition BST121 Power Brake Booster Vacuum Sensor
Power Brake Booster Vacuum Sensor for OE Monitoring
Standard Ignition BST121 is a power brake booster vacuum sensor built to OE specifications for accurate brake system monitoring. It is made for direct-fit service on select Dodge and Chrysler applications, including Journey, Grand Caravan, Town & Country, Aspen, and Durango models.
- OE-spec sensor for brake booster vacuum monitoring
- Female plug-in connector with oval shape
- 3 male blade terminals for direct electrical connection
- Built with high-grade materials for durability in service
- Designed for accurate fit and long service life
Detailed Product Information
This Standard Ignition power brake booster vacuum sensor is engineered to match OE connector and terminal design, helping maintain proper brake system monitoring and function. The BST121 uses a female plug-in connector with an oval housing and three male blade terminals, supporting accurate fitment on the listed Chrysler and Dodge vehicles. For buyers searching for a brake booster vacuum sensor for 2010-2018 Dodge Journey or a replacement sensor for 2006-2009 Dodge Durango, this part number provides a direct service option. This part cross-references 5S8921 and 72-1800 for the same application.
Vehicle Fitment
- Fits 2010-2018 Dodge Journey, N/A
- Fits 2010 Dodge Grand Caravan, N/A
- Fits 2010 Chrysler Town & Country, N/A
- Fits 2007-2009 Chrysler Aspen, N/A
- Fits 2006-2009 Dodge Durango, N/A
Common Issues This Sensor May Address
- Brake warning light triggered by vacuum sensor faults
- Incorrect brake booster vacuum readings
- Loss of proper brake system monitoring
- Connector or terminal mismatch during replacement
- Intermittent sensor signal caused by worn OE-style components
Installation Notes and Tips
Verify connector shape, terminal count, and vehicle application before installation. The BST121 is a plug-in style sensor, so the electrical connector should seat fully and align with the oval housing. Confirm the vehicle is one of the listed Dodge Journey, Grand Caravan, Town & Country, Aspen, or Durango applications before replacing the original sensor.
Quality Assurance
Standard Ignition builds this sensor to OE specifications using robust materials and OE-style connectors and terminals to support accurate fit and dependable operation in service.
| Brand | Standard Ignition |
|---|---|
| Part Number | BST121 |
| Connector Gender | Female |
| Connector Shape | Oval |
| Connector Type | Plug In |
| Terminal Gender | Male |
| Terminal Type | Blade |
This part fits 9 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2011 | Dodge | Journey | N/A | |
| 2010 | Dodge | Grand Caravan | N/A | |
| 2009 | Chrysler | Aspen | N/A | |
| 2009 | Dodge | Durango | N/A | |
| 2008 | Chrysler | Aspen | N/A | |
| 2008 | Dodge | Durango | N/A | |
| 2007 | Chrysler | Aspen | N/A | |
| 2007 | Dodge | Durango | N/A | |
| 2006 | Dodge | Durango | N/A |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.