
Sensor (Manufacturer Ref. 9904) — FEULING PARTS. 12 mm lambda probe designed for the restoration of exhaust systems on Vintage/Classic, Touring, and Roadster motorcycles. Stabilised zirconium dioxide ceramic body, gas-permeable platinum electrodes, and porous ceramic to limit erosion caused by contaminants and exhaust gas particles. Suitable for front or rear position depending on the installation.
A slow-reading oxygen sensor can impact engine management and lead to increased fuel consumption (up to 10–15% depending on wear), higher emissions, and a less responsive engine. Replacing a worn sensor with this original or equivalent part helps restore reliable air/fuel mixture readings without promising unverified gains.
Examples of compatible models: Harley-Davidson XL 1200 (Forty-Eight, Superlow) 2019 (XL2/XL2-R). Replacement part designed for riders concerned about the reliability of the exhaust system and engine management.