Overview

The MCT CM7334 is identified in aftermarket heavy-duty listings as a NOx sensor for exhaust applications and is cross-referenced to Cummins part number 3687334. Positioned within the exhaust/NOx sensor category, CM7334 serves as an MCT-branded replacement corresponding to the OEM number specified for certain Cummins-related aftertreatment systems. Available references do not publish detailed specifications such as cable length, connector style, or operating voltage; therefore, this part is best characterized by its role as a replacement aligned to Cummins 3687334.

Application and Fitment

Use CM7334 where Cummins 3687334 is called out by the equipment manufacturer or service documentation. As a NOx sensor, it supplies nitrogen oxides feedback to the engine control unit to support SCR dosing control and emissions compliance within the aftertreatment system. For parts identification, it is commonly associated with interchange numbers including 3687334RX, 212-075-1019, and 2872027, as well as cross-listings such as Automann 577.90651 and Dorman 904-6019. Always verify the OEM reference number and vehicle application before installation, as no additional construction or dimensional details are provided in the available sources.