4955254 HX40W Turbocharger for Cummins 6CT, 6L & QSL EnginesThe 4955254 HX40W turbocharger assembly is a wastegated unit built for six-cylinder Cummins 6CT, 6L and QSL engines used in excavator and dozer installations. It shares its casting with the 4042265 and 4042266 build group and carries the machine-side figure 6743-81-8040 for the 360-class machine. This listing clarifies the number blocks, engine naming and clock-position details that most catalogues leave ambiguous