LABWORK O2 Sensor Up& Downstream For 03-06 Cadillac Hummer H2 Chevrolet GMC 6.0L

What is LABWORK O2 Sensor Up& Downstream For 03-06 Cadillac Hummer H2 Chevrolet GMC 6.0L?

This OEM-compatible oxygen sensor kit replaces factory upstream and downstream O2 sensors on 6.0L GM vehicles from 2003 to 2006, including the Hummer H2, Chevrolet Silverado, GMC Yukon Denali, and Cadillac Escalade. Priced at $50.06, it includes two brand-new Kwiksen 4-wire sensors designed for plug-and-play installation without modifications. These sensors monitor exhaust oxygen levels to optimize engine performance, fuel economy, and emissions output—critical for vehicles undergoing maintenance or failing smog tests.

Key features

• Direct Plug-In Replacement — No splicing or rewiring needed; matches factory connectors.
• Upstream & Downstream Sensors — Complete set for front and rear exhaust monitoring.
• 4-Wire Configuration — Standard design for accurate voltage signaling and heater control.
• Kwiksen Brand Sensors — New construction ensures reliable signal response and longevity.
• 1-Year Warranty — Manufacturer-backed coverage for performance and defects.
• Fits 6.0L GM Platforms — Compatible with select 2003–2006 Cadillac, Chevrolet, GMC, and Hummer models.
• Includes 2 Sensors — One upstream (pre-cat), one downstream (post-cat) for full system coverage.

Who is LABWORK O2 Sensor Up& Downstream For 03-06 Cadillac Hummer H2 Chevrolet GMC 6.0L for?

This product suits DIY mechanics and repair shops maintaining full-size GM trucks and SUVs from the mid-2000s. It’s ideal for those replacing failed sensors causing check engine lights, poor fuel economy, or emissions test failures. Owners of the Hummer H2, Silverado 1500, Suburban 1500, Yukon Denali, or Escalade with the 6.0L V8 engine will find this kit a cost-effective, reliable solution.

How does LABWORK O2 Sensor Up& Downstream For 03-06 Cadillac Hummer H2 Chevrolet GMC 6.0L compare?

Compared to universal O2 sensors requiring wire cutting, this LABWORK kit offers a direct plug-in design for faster, error-free installation. It matches the performance of OEM sensors at a lower cost than dealership parts. While not as advanced as wideband AFR sensors used in tuning, it outperforms basic universal units in reliability and compatibility for stock 6.0L GM applications.