Bosch 17212 Oxygen Sensor - Downstream or Upstream

Bosch Wideband O2 Sensor for Ram and Dodge

Bosch 17212 is an Actual OE Oxygen Sensor built as a wideband air-fuel sensor for precise mixture feedback to the ECU. It is a specific-fit, heated replacement with a 5-wire harness, threaded mounting, and OE-style connector design for select Ram and Dodge Ram heavy-duty applications.

Key Features

• Wideband A/F oxygen sensor for continuous air-fuel ratio measurement across the full lambda range
• Heated design for faster sensor response and stable operation during cold starts
• Specific-fit replacement with included wiring harness
• Oblong male connector, blade terminals, and 6-terminal configuration
• Threaded mount with 18 mm thread diameter and 22 mm hex size
• Metal housing with robust ceramic sensor construction
• Part number 17212 for OE-style replacement matching

Product Details

Bosch 17212 uses wideband sensing technology to provide the ECU with detailed air-fuel ratio data, which supports accurate fuel control under changing load and temperature conditions. Bosch pioneered the planar pump-cell wideband design used in modern engine management, and this Actual OE Oxygen Sensor reflects that OE development history in a direct replacement format. It is a strong match for drivers searching for a Bosch oxygen sensor for 2007-2010 Dodge Ram 2500 upstream or downstream, as well as 2011-2012 Ram 2500 and Ram 3500 applications. This part cross-references 5149263AA and 68067170AA for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings sent to the ECU
• Rough idle or inconsistent engine response tied to sensor feedback
• Reduced fuel economy caused by inaccurate mixture control
• Emissions test failures linked to a worn wideband sensor

Installation Notes

Verify the connector shape, terminal count, thread size, and sensor position before installation. This Bosch 17212 oxygen sensor is a specific-fit threaded replacement for upstream and downstream locations listed in the fitment data. Confirm the vehicle application by year, make, model, and position before ordering, especially when replacing a sensor on a Dodge Ram 2500, Dodge Ram 3500, or Ram 2500/Ram 3500.

Quality Assurance

Bosch backs this Actual OE Oxygen Sensor with more than five decades of OE development experience in emission control and engine management sensors. The wideband design, optimized heater control, and durable construction are engineered to deliver consistent signal quality in demanding thermal and load conditions.

Fitment

• Fits 2007-2010 Dodge Ram 2500, Upstream
• Fits 2007-2010 Dodge Ram 2500, Downstream
• Fits 2007-2010 Dodge Ram 3500, Upstream
• Fits 2007-2010 Dodge Ram 3500, Downstream
• Fits 2011-2012 Ram 2500, Upstream
• Fits 2011-2012 Ram 2500, Downstream
• Fits 2011-2012 Ram 3500, Upstream
• Fits 2011-2012 Ram 3500, Downstream