Bosch 18083 Oxygen Sensor

Bosch Wideband O2 Sensor for Honda and Acura

Bosch Validated Oxygen Sensor 18083 is a wideband air-fuel ratio sensor built for precise upstream mixture monitoring. It delivers fast, continuous feedback to the ECU for accurate fuel control, stable drivability, and lower emissions across changing load conditions.

Key Features

• Wideband A/F oxygen sensor with continuous lambda-range measurement
• Heated design for faster sensor warm-up and stable operation
• 5-wire construction with 6 terminals and square male connector
• Specific-fit replacement with included wiring harness
• Threaded mounting, 18 mm thread size, 22 mm hex size
• Overall length: 11.2 in; sealing surface to connector end: 10 in
• Standard replacement grade for OE-style service

Product Details

Bosch 18083 uses wideband sensing technology to provide the ECU with more detailed air-fuel ratio data than a traditional switching sensor. That level of signal detail supports accurate mixture correction during acceleration, cruising, and rapid load changes. Bosch pioneered the planar pump-cell wideband design, and this Bosch Validated Oxygen Sensor line reflects that OE development background for Honda Pilot, Honda Ridgeline, Acura MDX, Acura TLX, and other listed applications.

This part cross-references Honda/Acura OE numbers such as 36531R70A01 and 36541R70A02 for the same application.

Common Symptoms It May Address

• Check engine light related to upstream oxygen sensor performance
• Rough idle or inconsistent air-fuel correction
• Reduced fuel economy from inaccurate mixture feedback
• Slow sensor response during warm-up or load changes
• Emissions test failures tied to sensor signal issues

Installation Notes

Compatible With 2010-2020 Acura MDX, upstream right and upstream left; 2014-2020 Acura RLX, upstream left; 2015-2020 Acura TLX, upstream left and upstream right; 2009-2019 Honda Pilot, upstream left and upstream right; 2009-2014 Honda Ridgeline, upstream left and upstream right; 2017-2019 Honda Ridgeline, upstream left and upstream right; 2014-2018 Acura RDX, upstream left and upstream right; 2013-2017 Honda Accord, upstream left and upstream right, without California Emission System; 2008-2009 Honda Accord, upstream left and upstream right, without California Emission System; 2011-2017 Honda Odyssey, upstream left and upstream right; 2012-2015 Honda Crosstour, upstream left and upstream right; 2009-2014 Acura TL, upstream left and upstream right; 2010-2014 Acura TSX, upstream left and upstream right; 2013 Acura RDX, upstream front and upstream rear; 2010-2013 Acura ZDX, upstream left and upstream right; 2011-2012 Acura RL, upstream left and upstream right; 2008-2012 Honda Accord, upstream left and upstream right; 2010-2011 Honda Accord Crosstour, upstream left and upstream right.

Verify connector shape, wire count, thread size, and sensor position before installation. Use the correct upstream location for the vehicle and confirm the application notes for emissions package differences where listed.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development experience and validated aftermarket coverage. The ceramic construction, heater control, and wideband sensing design are built for consistent performance in demanding thermal conditions.