Bosch 17270 Premium Wideband Air/Fuel Ratio Oxygen Sensor

The Bosch 17270 Premium Wideband Air/Fuel Ratio Sensor delivers precision oxygen measurement to optimize engine performance, improve fuel economy, and reduce harmful emissions. Unlike standard oxygen sensors that simply switch between rich and lean readings, this advanced wideband sensor provides proportional output that precisely measures the air-fuel mixture from rich to lean conditions.

Key Features:

• Advanced wideband sensing element for exact air/fuel measurement
• Direct-fit design with OE connector for easy installation
• Pre-coated threads with anti-seize compound included
• 5-wire heated sensor with integrated wiring harness (approximately 20.3 inches)
• 18mm thread diameter with 22mm hex size for proper fitment
• Overall length of 23.6 inches from sealing surface to connector end
• Robust metal housing designed to withstand extreme exhaust temperatures
• Engineered to OEM specifications for reliable performance

This upstream wideband sensor sends precise oxygen concentration data to your vehicle's engine control unit (ECU), enabling real-time monitoring and adjustment of the air-to-fuel mixture. This ensures your engine runs efficiently, whether rich or lean, helping to prevent check engine lights, rough idling, poor fuel economy, and increased emissions. Compatible with OEM part numbers 0 258 017 270, 06F 906 262 AC, 06F 906 262 R, and 06J 906 262 AA.

Bosch invented the automotive oxygen sensor and remains the world's leading manufacturer of oxygen sensors, known globally for quality, innovation, and performance.