NPS DOX-0257 Lambda Probe DensoThe Denso DOX-0257 Lambda Probe is a reliable and high-quality exhaust gas sensor that monitors the air-fuel mixture in your vehicle's engine. This oxygen O2 probe ensures optimal combustion, reduces emissions, and improves fuel efficiency
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The DOX‑0257 Lambda Probe is a high‑performance oxygen sensor designed for precise control of the air‑fuel mixture in modern internal combustion engines. Developed by Denso, this probe delivers reliable readings across a wide range of operating conditions, ensuring optimal engine performance, reduced emissions, and improved fuel economy.
| Parameter | Description |
|---|---|
| Model Number | DOX‑0257 |
| Sensor Type | Heated planar lambda sensor (O₂) |
| Connection Pins | 4‑pin connector (typical for modern O₂ sensors) |
| Length | 330 mm (standard length for direct fit applications) |
| Operating Temperature Range | –40 °C to +120 °C (ambient), sensor temperature 600–700 °C |
| Voltage Output | 0.1 V – 0.9 V (typical for lambda sensors) |
| Response Time | ~200 ms (fast response suitable for rapid engine load changes) |
| Material | Ceramic body with platinum or palladium sensing element, protected by a heat‑resistant coating. |
| Installation Orientation | Right‑handed (R) or left‑handed (L) versions available; select based on vehicle wiring diagram. |
The DOX‑0257 is engineered for use in Toyota models such as:
When selecting a sensor, confirm whether a right‑handed (R) or left‑handed (L) version is required by consulting the vehicle’s wiring diagram.
The combination of a robust heated design, precise voltage output, and direct fit installation makes the NPS DOX‑0257 Lambda Probe Denso an ideal choice for technicians and automotive enthusiasts seeking reliable engine management. Its proven performance across multiple Toyota models ensures that vehicles maintain optimal combustion efficiency, leading to better fuel economy and lower environmental impact.
The DOX‑0257 Lambda Probe exemplifies Denso’s commitment to quality and innovation in automotive sensor technology. By delivering accurate oxygen measurements under demanding conditions, it plays a critical role in modern engine control systems, helping vehicles achieve peak performance while staying compliant with stringent emissions standards.
Denso is a Japanese automotive parts manufacturer. It is the world's largest supplier of automotive ignition systems, and also produces a wide range of other automotive components.
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