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Not quite sure this lambda probe fits your Maxum SCB 41 powered by Cummins QSB5.9 370HP? Feel free to contact our Tech Support.
How do you know your sensor’s type and bandwidth? Narrowband boat motor exhaust oxygen sensors have 4 wires while wideband air fuel sensors have 5. This o2 sensor will fit your Maxum SCB 41 powered by Cummins QSB5.9 370HP if you select the correct exhaust o2 sensor type off of the dropdown selector, regardless of that the sensor’s position in the exhaust system is front or post. This sensor will not replace flange-type oxygen sensors. Narrow- and wideband option should be selected off of the dropdown selector. Compatibility Our Bosch exhaust air fuel sensor is available to boat power plants fitted with 1 up to 4-wire 1-Volt narrowband zirconia or 5-wire 5-Volt wideband lambda probes, torqued in M18 x 1.5mm threaded nut. silicones or silicates, can lead to damage of your Maxum SCB 41 powered by Cummins QSB5.9 370HP's converter and expensive repairs. Why replace? Failure of these air fuel sensors, either through normal aging, the use of leaded fuels, or due to fuel contamination with e.g.
Also it sounds reassuringly, major boat engine manufacturers place their trust in Bosch air fuel sensors. Bosch's patented materials and processes ensure unbeatable quality and engine performance. The ceramic element is a critical part of the lambda sensor. Bosch patented ceramic technology affords best-in-class performance.