Wideband 4-Wire 58x Gen 4 O2 Sensor for LS Engine Swaps
When installing a Gen 4 LS swap, accurate exhaust monitoring is essential, and the 4 wire 58x Gen 4 O2 Sensor delivers clean, fast voltage readings across the rev range. It aligns perfectly with the 58 tooth reluctor ring and plugs into the factory harness without splices to preserve signal quality and simplify routing in any build. Separate heater and sensing circuits bring the sensor up to temperature quickly without corrupting measurement voltages, so the ECU sees accurate data from startup through full throttle. This reliable oxygen feedback drives consistent closed loop fuel control and injector timing corrections, helping maintain emissions compliance on road or track.
Rapid Warmup through Isolated Heater and Sensing Circuits
This 4 wire O2 sensor uses separate circuits for the heater element and the sensing cell, allowing it to reach optimal temperature almost instantly after engine start. By directing full current to the heater without corrupting the voltage measurement line, it eliminates lean or rich excursions during warmup. The ECU receives stable readings even under fluctuating load or sudden throttle changes, which preserves smooth idle response and protects catalytic components from excessive stress.
Direct Fit for Gen 4 LS 58 Tooth Reluctor and Factory Harness
Engineers engineered this sensor to match the Gen 4 LS crankshaft's 58 tooth reluctor geometry exactly, ensuring correct angular alignment without adapter modules. A square four-pin connector plugs directly into the original wiring loom, removing potential noise sources and reducing installation steps. Installers benefit from simplified routing and a lock-in fit that resists vibration, while the ECU sees accurate timing and mixture data for reliable ignition control.
Stainless Steel Housing and Ceramic Core for Exhaust Durability
The sensor's stainless steel shell shields the internal sensing element from corrosive combustion byproducts and repeated thermal cycles. Inside, a precision ceramic core retains its calibration and resists deformation when exposed to vibration and rapid temperature swings common in strenuous driving. This combination prevents gradual drift of the sensing cell, so air fuel ratios remain consistent over thousands of miles without premature replacement.
Real Time Oxygen Feedback for Precise Combustion Control
Accurate and fast voltage signals from this sensor provide the ECU with real time oxygen data, enabling precise injector pulse width and ignition timing adjustments. Consistent feedback under all operating conditions-from idle through full throttle-helps maintain optimal combustion efficiency. The result is improved fuel economy, smoother throttle response, and reduced emissions output on both street and track applications.
Engineered for precise fit and reliable operation in your LS swap.