NTK 21059 O2 sensor for the 2009-2012 Chevrolet Colorado V8 5.3L and other vehicles reads exhaust oxygen and sends it to the ECU. That closed-loop feedback helps control the air-fuel ratio and lets the OBDII system flag fuel delivery or catalytic converter efficiency problems.
A vacuum leak, an exhaust leak or a fuel delivery fault can be behind a check engine light, rough idle or poor fuel economy just as a worn sensor can, so find the cause before you buy.
This O2 sensor is a direct-fit replacement for the 2009-2012 GMC Canyon V8 5.3L, the 2008 Chevrolet Trailblazer V8 5.3L and the 2008-2009 Trailblazer V8 6.0L, and each takes one. Open the Buyer's Guide tab to check your exact model and engine.
Fit and size
Build and materials
One O2 sensor with harness accessory hardware.
Is the NTK 21059 O2 sensor right for the 2009-2012 GMC Canyon V8 5.3L?
Yes, NTK 21059 is a direct-fit replacement for the 2009-2012 GMC Canyon V8 5.3L, and that truck takes one sensor. Open the Buyer's Guide tab to check other models and engines.
Is the NTK O2 sensor heated, and what kind of element does it use?
Yes, NTK 21059 is a heated sensor with switching zirconia technology. Its ceramic element has a dual-coated platinum interface for quick light-off and response.
Does this O2 sensor come with a connector and harness hardware?
Yes, this O2 sensor is equipped with an OE specified, water-resistant connector and harness accessory hardware for easy installation. This listing is one sensor.
What thread and hex size does this O2 sensor have?
This O2 sensor has an M18 - 1.5 thread and a 7/8" (22mm) hex size.
Is this an NTK OE type oxygen sensor?
Yes, NTK 21059 is based on OE expertise but engineered for the aftermarket, and OE development includes vibration and thermal shock testing.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
