O2 Oxygen Sensor Upstream Downstream for Chevrolet Silverado 1500 (2008-2013) 4.8L, 5.3L, 6.0L, 6.2L

Direct-Fit Oxygen Sensor Kit for 2008-2013 Chevrolet Silverado (GMT900)

What it Does: The 4-piece oxygen sensor kit replaces degraded upstream and downstream sensors on the 2008-2013 Silverado to restore closed-loop fuel metering, stabilize idle, and eliminate emissions-related trouble codes.

The Stock Chevrolet Silverado Exhaust Sensor Degradation

Factory oxygen sensors on GMT900 platform trucks undergo severe thermal cycling and exposure to soot, oil blow-by, and exhaust contaminants over high mileage. As the stock zirconium dioxide element ages, its switching frequency between lean and rich states drops significantly. This delayed response forces the powertrain control module into inaccurate fuel trim calculations, resulting in unburned fuel waste, loss of low-end torque, fouled spark plugs, and recurring diagnostic trouble codes such as P0135, P0155, or false catalytic efficiency faults (P0420/P0430).

The Engineering Solution

This 4-piece replacement package restores factory-spec AFR feedback across Bank 1 and Bank 2. Each direct-fit sensor features a high-grade ceramic thimble housed within a dual-layer 304 stainless steel shield to prevent soot contamination and thermal shock. Engineered with rapid-heating internal elements, they reach target operating temperatures in seconds to minimize cold-start emissions. High-temp PTFE wiring harnesses and pre-pinned OEM-style connectors ensure plug-and-play installation without wire splicing or signal resistance deviations.

What's Included

• 2x Upstream Oxygen Sensors (Pre-Catalytic Converter)
• 2x Downstream Oxygen Sensors (Post-Catalytic Converter)

Technical Specifications

Compatibility

• 2008-2013 Chevrolet Silverado 1500 4.8L V8
• 2008-2013 Chevrolet Silverado 1500 5.3L V8
• 2008-2013 Chevrolet Silverado 1500 6.0L V8
• 2008-2013 Chevrolet Silverado 1500 6.2L V8

Frequently Asked Questions & Fitment Warnings

Does this fit the GMT900 Silverado?

Yes, this is a direct fit for the 2008-2013 Chevrolet Silverado 1500 equipped with the Gen IV Vortec 4.8L, 5.3L, 6.0L, and 6.2L engines. Confirm your truck is equipped with one of these V8 displacements prior to installation.

Is harness splicing or an aftermarket ECU calibration required?

No, these direct-fit sensors utilize OE-matched connectors that plug directly into the factory wiring harness with no calibration or tune needed.

The Chevrolet Truck Standard

Built to withstand severe exhaust heat and sustained high-load hauling, this complete O2 sensor set delivers reliable, OE-spec air-fuel management across all cylinders under demanding towing conditions.