8946547090 Toyota Oxygen Sensor

Product Description

8946547090

The 8946547090 oxygen sensor is a heated zirconia electrochemical lambda probe exclusively developed for Toyota gasoline pickup & MPV models. Installed at downstream position after catalytic converter on exhaust pipeline, it monitors residual oxygen concentration in exhaust gas and transmits real-time voltage feedback to ECU. Based on accurate signal data, the engine ECU fine-tunes air-fuel mixing ratio, optimizes post-catalyst exhaust monitoring, cuts harmful tailpipe emissions, improves fuel economy and stabilizes idle running, serving as standard OE replacement spare for Toyota Hilux, Fortuner and Innova series vehicles.

• OEM Direct Fit: Strictly manufactured following original OE drawing standard No.8946547090, consistent M18×1.5 thread specification, original 4-pin grey plastic plug and fixed cable length, plug-and-play mounting without pipe cutting, wiring modification or extra adapter fittings.

• High-performance Zirconia Sensing Core: Adopts automotive solid zirconia ceramic chip with built-in heating resistor, ultra-fast signal switching response under cold start, sudden acceleration and full-load working conditions, effectively avoid air-fuel ratio deviation and fault code triggering.

• High Temperature & Corrosion Resistance: Outer casing made of heat-resistant alloy steel with anti-oxidation coating, stable working under long-term high exhaust temperature and corrosive exhaust environment, effectively prevent sensor core erosion from sulfur and oil vapor.

• EMI Anti-interference Wiring Design: Internal shielded wire harness and filtering circuit structure, stable signal transmission under severe engine vibration and high engine compartment temperature, no intermittent signal dropout.

• IATF16949 Full-process QC Control: All finished products pass signal calibration, high-low temperature cycling aging, vibration durability and tightness leakage test before factory delivery.

• Response Time: Standard switching response ≤90ms between rich/lean mixture; oil contamination or core aging will slow response speed, causing rising fuel consumption.

• Light-off Warm-up Time: Complete preheating within 25~45s after engine ignition to reach activation temperature; sensor enters closed-loop signal output after warm-up finished.

• Output Voltage Range: Normal signal fluctuates 100mV~800mV periodically; inferior/aged sensor narrows output range to 300~600mV only.

• Rated Service Mileage: Standard effective service lifespan: 80,000~150,000 KM; inferior gasoline with excessive sulfur, long-term incomplete combustion and engine oil burning greatly shorten service cycle.

• Built-in Heater Resistance: Standard heater resistance value at ambient temp: 2.8~4.2Ω, matched to 12V vehicle power supply for rapid preheating.

• Protective Perforated Metal Shell: Multi-layer porous stainless steel shield, block exhaust impurities and prevent physical damage to inner sensing ceramic chip.

• Zirconia Sensing Core Assembly: Core detection component with built-in heating coil, convert exhaust oxygen concentration change into analog voltage signal.

• Internal Insulation & Sealing Layer: High-temperature resistant ceramic filler for waterproof, gas-tight and insulation protection inside sensor body.

• Shielded Copper Wiring Harness: Anti-interference wrapped cable connecting core and outer plug, reduce electromagnetic interference from ignition system.

• Pin Sealed Plastic Connector: Original vehicle matching grey plug with tin-plated anti-rust terminals and built-in rubber waterproof ring for damp-proof sealing.

This sensor is a direct replacement for the following OE numbers:

8946502430, 894650E210, 894650E250, 8946547090, 8946548390

• Disconnect vehicle battery negative pole before installation to avoid ECU circuit short-circuit damage.

• Clean residual carbon deposit and dirt inside exhaust mounting thread hole to guarantee tight sealing after installation.

• Prohibit touching the inner ceramic sensing part with hand; skin grease will lead to permanent measuring drift and failure.

• After installation, connect OBD diagnostic scanner to clear exhaust-related fault codes and conduct road test inspection.

• Replace sensor timely when encountering higher fuel consumption, unstable idle, exhaust emission failure or illuminated engine malfunction warning lamp.

Hot Tags: 8946547090 toyota oxygen sensor, China 8946547090 toyota oxygen sensor manufacturers, suppliers, air flow meter car, automotive electronic system, Mazda CX 5 TPS sensor SkyActiv, oxygen sensor for CRDI 2013-2020, Rain Sensor For OCTAVIA 2012 2020, Rover sensor crankshaft position