FAST LSU 4.9 wideband oxygen sensors are capable of accurately measuring air/fuel ratios of popular fuels such as gasoline, ethanol, methanol, and diesel. This enhanced accuracy leads to more accurate tuning, more power and efficiency. LSU 4.9 sensors are accurate to air/fuel ratios as rich as 4:1 and as lean as 20:1 and are a direct replacement for the sensors provided with the FAST wireless air fuel meter. Product features: * E85 compatible * Gasoline compatible * Diesel compatible * Methanol/alcohol compatible * Lambda range 0.65 to 1.36 * Oxygen sensor wire length 39.370 in. * Maximum exhaust gas temperature 1,922 degrees F * Operating exhaust gas temperature 1,706 degrees F * Thread size 18mm x 1.50

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