Got a 2000-2004 Toyota Tacoma with the 2.4L, 2.7L, or 3.4L engine? If your check engine light's on or you're getting bad fuel economy, it might be time to replace your oxygen sensors. This RANSOTO set includes both the upstream (part #234-9001) and downstream (part #234-4189) O2 sensors, so you've got everything you need in one package. These sensors monitor the oxygen levels in your exhaust to help your engine run efficiently and reduce emissions. They're engineered to match or even outperform the original parts, and installation is straightforward if you're handy – just unbolt the old ones and screw these in. But a heads up: professional installation is recommended if you're not comfortable, and no instructions are included. Double-check your old part numbers and your exact Tacoma model (year, engine, transmission, Cali vs. federal) before buying to make sure they fit. We stand behind them with a 6-month warranty, so you can buy with confidence. Keep your Tacoma running clean and smooth!
