LABWORK Upstream O2 Oxygen Sensor For 2000-04 Toyota Tacoma 2.4 2.7 3.4L

What is LABWORK Upstream O2 Oxygen Sensor For 2000-04 Toyota Tacoma 2.4 2.7 3.4L?

The LABWORK Upstream O2 Oxygen Sensor is an aftermarket replacement part engineered specifically for select Toyota models from 2000 to 2004, including the Tacoma, Tundra, and 4Runner. Positioned before the catalytic converter, this upstream sensor monitors oxygen levels in exhaust gases to help the engine control unit maintain the ideal air-fuel mixture. Accurate readings improve fuel efficiency, reduce emissions, and support smooth engine operation. Priced at $36.57, it's a cost-effective solution for maintaining vehicle performance without sacrificing reliability.

Key features

• Direct Fit — Replaces OEM part numbers 89467-34021, 89467-35011, and others.
• Broad Compatibility — Fits 2.4L, 2.7L, and 3.4L Toyota engines from 2000–2004.
• Upstream Sensor — Monitors exhaust pre-catalytic converter for real-time fuel trim.
• Durable Construction — Built to withstand high-temperature exhaust environments.
• Plug-and-Play Install — No modifications required; matches factory connector.
• Emissions Compliance — Helps pass smog checks by maintaining proper combustion.
• Single Unit Included — Package contains one O2 sensor for front bank installation.

Who is LABWORK Upstream O2 Oxygen Sensor For 2000-04 Toyota Tacoma 2.4 2.7 3.4L for?

This sensor is ideal for Toyota Tacoma, Tundra, and 4Runner owners seeking an affordable, reliable replacement for a failing upstream oxygen sensor. It suits DIY mechanics with basic tools and intermediate knowledge of engine systems. It’s also a smart choice for repair shops looking to reduce parts costs without compromising on fit or function. Whether restoring an older truck or maintaining daily driver reliability, this sensor supports long-term engine health.

How does LABWORK Upstream O2 Oxygen Sensor For 2000-04 Toyota Tacoma 2.4 2.7 3.4L compare?

Compared to standard polypropylene rugs or fixed overhead cranes, this oxygen sensor serves a completely different automotive function—engine management versus floor protection or lifting. It directly competes with other aftermarket O2 sensors but stands out through broad OEM cross-compatibility and a competitive price point under $40. While not a dealer-branded unit, it delivers equivalent performance for air-fuel ratio monitoring, making it a practical upgrade over worn originals or low-grade generics.