Upstream Oxygen Sensor - Compatible with 1990 - 1992 Toyota Corolla 1.6L 4-Cylinder 4A-FE VIN a FI Naturally Aspirated GAS 1991

Upstream Oxygen Sensor - Compatible with 1990 - 1992 Toyota Corolla 1.6L 4-Cylinder 4A-FE VIN a FI Naturally Aspirated GAS

Position: Upstream

Note: OE Base Sensor; B1S1

Sensor Type: Non-Heated

Universal Or Specific Fit: Specific

Wire Quantity: 2

Features:
- Measures oxygen levels to fine-tune air-fuel mixture, improving fuel economy and saving costs.
- Coating prevents contamination and erosion of the electrode surfaces by combustion residue and particulates in the exhaust gases.
- Coated in with electrodes made of a gas-permeable platinum layer.
- Determines the oxygen content of the exhaust gas, monitoring the air fuel ratio for combustion efficiency.
- Monitors exhaust gases and reduces pollutants for a cleaner environment.

Compatible With or Fits:
- 1990 - 1992 Toyota Corolla 1.6L 4 Cyl 4A-FE VIN: A FI Naturally Aspirated GAS

Fits Years: 1990 1991 1992