Bosch 17025 LSU 4.9 Wideband O2 Sensor – OEM-Type Oxygen Sensor

OEM-Grade Wideband O2 Sensing from the Inventor of the Automotive Oxygen Sensor

The Bosch 17025 is a premium OEM-type LSU 4.9 wideband oxygen sensor used in air/fuel ratio meters and engine management systems. Bosch invented the automotive oxygen sensor and remains the top choice of OEMs worldwide — this sensor brings that same engineering excellence to your build, delivering accurate wideband readings, lower emissions, and improved fuel economy.

Features an OEM-style connector and includes a wiring harness for straightforward installation. Sold individually.

Key Features

• LSU 4.9 wideband sensor — compatible with wideband air/fuel ratio meters and ECU systems
• OEM connector — direct-fit installation, no modification required
• Wiring harness included — ready to install out of the box
• 5-wire design — 0–5V voltage range for precise AFR measurement
• Thread-in mounting — standard bung fitment (bung not included)
• Reduces harmful exhaust emissions and improves fuel economy
• Bosch Premium Original Equipment product line

Specifications

• Part Number: 17025
• Brand: Bosch Automotive
• SKU: 17025
• UPC: 028851170253
• Type: LSU 4.9 Wideband O2 Sensor
• Number of Wires: 5
• Voltage Range: 0–5V
• Mounting Style: Thread-in
• Oxygen Sensor Bung: Not included
• Wiring Harness: Included
• Quantity: Sold individually

Compatible Applications

• Honda Grom (SF / OG / 2022+)
• Honda Monkey (1st Gen / 2022+)
• Honda CRF110 (2019+)
• Honda Trail 125
• Honda Super Cub
• Honda Z125
• Yamaha R3
• TNT135 / 300 Swap builds
• JC92 platform builds