Supply your engine computer with the exhaust-oxygen readings it relies on with the Walker Products oxygen sensor 250-21054. This direct-fit, upstream sensor fits many vehicles, among them the 1992-1995 Toyota MR2 (L4-2.2L), 1993-1995 Toyota Supra (L6-3.0L), and 1992-1995 Lexus SC300 (L6-3.0L); see the "Vehicles it fits" section for the full list. Each listed application uses one sensor.
Walker Products designed its engine management and oxygen sensors as Original Equipment Manufacturer replacements. Each part number is built for its specific application and fitment position, and is designed to provide the diagnostic feedback the ECU requires.
- Oxygen measurement: Determines the oxygen content of the exhaust gas and monitors the air-fuel ratio, which helps the ECU fine-tune the air-fuel mixture for combustion efficiency.
- Platinum electrodes: The electrodes are made of a gas-permeable platinum layer.
- Protective coating: A coating guards the electrode surfaces against contamination and erosion from combustion residue and particulates in the exhaust.
- Emissions monitoring: Monitors exhaust gases to help the engine management system keep pollutants in check.
Specifications: narrow-band, unheated, 1-wire design; flange mount; single male spade terminal with an oblong connector; 20-gauge wire; specific fit. Country of origin: United States.
Signs this sensor may need replacing include poor engine running, higher fuel consumption, increased exhaust emissions, or an illuminated malfunction indicator light (MIL). The ECU may also store a related fault code. Diagnose the cause before replacing, and check the sensor, wiring harness, and connector for physical damage. Walker Products is an ISO9001/TS 16949 certified company and has supplied engine management sensors and fuel system components since 1946.
Frequently Asked Questions
Is this the right MR2 sensor for a 1992-1995 Toyota MR2 2.2L?
It is listed for the 1992-1995 Toyota MR2 with the L4-2.2L engine and installs in the upstream position. That application uses one sensor.
Which Supra sensor position does the 250-21054 fill on the 1993-1995 Toyota Supra 3.0L?
On the 1993-1995 Toyota Supra with the L6-3.0L engine, this Walker Products sensor is cataloged for the upstream position. One sensor is used per vehicle.
Is the 250-21054 a heated oxygen sensor?
No. It is an unheated, narrow-band, 1-wire sensor with a flange mount and a single spade terminal.
What are signs an oxygen sensor may need replacing?
A failing sensor may cause poor running, higher fuel consumption, increased emissions, or a lit malfunction indicator light. Diagnose the cause first, and inspect the wiring harness and connector for damage.
Where is this oxygen sensor made?
Country of origin is the United States.
