Bosch 15150 Oxygen Sensor - Downstream, Downstream Left or Upstream

Bosch Oxygen Sensor for OE-Style Emissions Control

Bosch 15150 is a narrow-band heated oxygen sensor built for precise air-fuel-ratio feedback to the ECU. It supports stable combustion control and emissions management across changing engine loads, making it a direct-fit choice for select Chevrolet, GMC, Buick, Cadillac, Hummer, Saab, Pontiac, Isuzu, and Hummer applications.

The Bosch Engineered Oxygen Sensor line draws on Bosch OE development dating back to the original oxygen sensor design introduced in 1976. This part number, 15150, uses a switching-type narrow-band design with a heated element for quicker closed-loop operation and consistent signal response under high heat and vibration.

Key Features

• Specific-fit Bosch oxygen sensor for direct replacement applications
• Narrow-band heated sensor type for fast warm-up and stable feedback
• 4-wire design with square connector, male connector gender, and female terminals
• Threaded mounting with 18 mm thread size and 22 mm hex size
• Metal housing with high-temperature-resistant construction
• Wiring harness included for installation on listed vehicles
• Overall length: 17.7 in; harness length: 14 in

Detailed Description

Bosch 15150 is engineered for vehicles that rely on a narrow-band oxygen sensor signal to manage fuel delivery and emissions performance. The heated design helps the sensor reach operating temperature faster, which supports quicker closed-loop operation after startup. Bosch’s ceramic sensing element and heater control are built for durability in demanding exhaust environments, helping maintain accurate lambda feedback over time. This part is a practical OE-style replacement for drivers servicing a Chevrolet Silverado 1500 upstream sensor, a GMC Sierra 1500 upstream sensor, or a Chevrolet Spark downstream sensor.

This part cross-references ACDelco 12580466 and 12585999 for the same application.

Vehicle Fitment

• Fits 2013-2015 Chevrolet Spark, downstream
• Fits 2006-2013 Chevrolet Silverado 1500, upstream
• Fits 2006-2013 GMC Sierra 1500, upstream
• Fits 2009-2012 Chevrolet Colorado, upstream
• Fits 2009-2012 GMC Canyon, upstream
• Fits 2006-2011 Buick Lucerne, downstream
• Fits 2006-2011 Cadillac DTS, downstream
• Fits 2008-2010 Hummer H3, upstream
• Fits 2009-2010 Hummer H3T, upstream
• Fits 2008-2009 Buick Allure, downstream
• Fits 2008-2009 Buick Allure, upstream
• Fits 2008-2009 Buick LaCrosse, downstream
• Fits 2008-2009 Buick LaCrosse, upstream
• Fits 2008-2009 Chevrolet Impala, downstream
• Fits 2006-2009 Chevrolet Impala, upstream
• Fits 2008-2009 Chevrolet Trailblazer, downstream left
• Fits 2008-2009 GMC Envoy, downstream left
• Fits 2007-2009 Hummer H2, upstream
• Fits 2008-2009 Saab 9-7x, downstream left
• Fits 2008 Pontiac Grand Prix, downstream
• Fits 2005-2008 Pontiac Grand Prix, upstream
• Fits 2006-2007 Cadillac CTS, upstream
• Fits 2007 Cadillac Escalade, upstream
• Fits 2007 Cadillac Escalade ESV, upstream
• Fits 2007 Cadillac Escalade EXT, upstream
• Fits 2007 Chevrolet Avalanche, upstream
• Fits 2006-2007 Chevrolet Monte Carlo, upstream
• Fits 2007 Chevrolet Silverado 1500 Classic, upstream
• Fits 2006-2007 Chevrolet Suburban 1500, upstream
• Fits 2007 Chevrolet Suburban 2500, upstream
• Fits 2006-2007 Chevrolet Tahoe, upstream
• Fits 2007 GMC Sierra 1500 Classic, upstream
• Fits 2006-2007 GMC Yukon, upstream
• Fits 2006-2007 GMC Yukon XL 1500, upstream
• Fits 2007 GMC Yukon XL 2500, upstream
• Fits 2006 Buick Rainier, downstream
• Fits 2006 Chevrolet Avalanche 1500, upstream
• Fits 2006 Chevrolet Colorado, downstream
• Fits 2006 Chevrolet Trailblazer, downstream
• Fits 2006 Chevrolet Trailblazer EXT, downstream
• Fits 2006 GMC Canyon, downstream
• Fits 2006 GMC Envoy, downstream
• Fits 2006 GMC Envoy XL, downstream
• Fits 2006 Isuzu Ascender, downstream
• Fits 2006 Isuzu i-280, downstream
• Fits 2006 Isuzu i-350, downstream
• Fits 2006 Saab 9-7x, downstream

Common Replacement Uses

• Restores oxygen sensor signal quality when the ECU sets mixture-related fault codes
• Addresses rough idle, poor fuel control, or delayed closed-loop operation
• Helps correct emissions-test failures tied to sensor response or aging sensor output
• Supports replacement of a worn upstream or downstream sensor on listed GM and related platforms
• Useful when servicing a Chevrolet Silverado 1500, GMC Sierra 1500, or Chevrolet Impala with a direct-fit sensor

Installation Notes and Tips

Verify the sensor position before ordering, since this part is listed for upstream, downstream, and downstream left locations depending on the vehicle. Confirm the connector shape, wire count, and thread size match the original sensor before installation. Use proper oxygen-sensor service tools and inspect the exhaust bung threads for damage or contamination before threading in the new unit.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development experience. The Bosch Engineered Oxygen Sensor line is built to OE-proven standards for signal accuracy, heater performance, and durability in high-temperature exhaust service.