4-wire 58x Gen 4 O2 Sensor for LS Engine Swaps
For anyone installing a Gen 4 LS engine swap, accurate oxygen sensing is a top priority, and the 4-wire O2 Sensor for 58x Gen 4 delivers that exact performance. This sensor aligns perfectly with the 58 tooth reluctor ring and mates directly with the factory harness to remove guesswork and keep signal integrity intact. By isolating separate heater and measurement circuits, it reaches operating temperature rapidly without corrupting the voltage feedback. It supports closed loop fuel control from cold start through wide open throttle, giving the ECU reliable input to adjust injector timing and maintain emissions compliance in demanding road or track environments.
Rapid Warmup through Isolated Heater and Measurement Circuits
This four wire O2 sensor separates the heater element from the sensing cell to achieve critical operating temperature almost instantly after engine start. By directing power exclusively to the heater circuit, it cuts through cold idle conditions and prevents lean or rich excursions during warmup. Measurement voltages remain free from interference caused by current draw, so the ECU sees a precise, stable signal even as throttle position or engine load shifts abruptly. The result is smooth idle behavior, protected catalytic converter components, and consistent oxygen feedback from the first second of operation.
Direct Fit for Gen 4 LS 58 Tooth Reluctor and Factory Harness Integration
Engineers designed this sensor to match the Gen 4 LS crankshaft's 58 tooth reluctor pattern without any splices or adapter harnesses. A square four pin connector plugs directly into the factory wiring loom to eliminate potential noise sources and reduce installation steps. Builders benefit from simplified routing and a secure mechanical connection that prevents loosened terminals under vibration. Accurate alignment with the reluctor ring means the ECU receives correct mixture and timing data, supporting reliable ignition control and emissions compliance on street or track.
Stainless Steel Housing and Ceramic Core Enduring Extreme Exhaust Temperatures
The robust stainless steel shell shields the sensing element from corrosive gases and repeated thermal cycles common in high load applications. Inside, a precision ceramic core retains calibration and resists deformation when exposed to vibration and temperature spikes. This material pairing prevents gradual drift that can lead to incorrect air fuel ratios over time. Users can expect consistent closed loop performance across spirited driving sessions and extended mileage without premature replacement.
Real Time Oxygen Feedback Supporting Precise Combustion and Emissions Control
Accurate oxygen readings are the foundation for effective ECU corrections to injector pulse width and ignition timing. This sensor delivers reliable voltage signals that reflect actual exhaust composition under all conditions, from idle to full throttle. Enhanced combustion control yields improved fuel economy and power output while reducing unwanted emissions. Drivers experience smooth throttle response and tuners can trust that their closed loop adjustments are based on clean, consistent data.
Engineered for a precise fit and consistent oxygen feedback on LS engine swaps.