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888.687.0539 (U.S.)
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888.687.0539 (U.S.)
225.706.4858 (Int.)
Monday-Friday 7am-5pm CST

Finding your Cummins Engine Serial Number

Most Cummins engines have an 8 digit serial number (12345678). Your Owner's manual or Operation Manual list the procedure to find the ESN on your engine.
This quick guide will help you locate the dataplate if you do not have access to a manual. If the dataplate is missing or not readable, the ESN can also be found on the engine block.

Find the dataplate on ISB Engines

The dataplate typically located on the engine rocker cover, but may be located on the side of the gear housing. It includes the following information:

  • Engine Serial Number (ESN)
  • Critical Parts List (CPL)

Find the dataplate on ISC and ISL Engines

The dataplate is located on the top side of the gear housing. It includes the following information:

  • Engine Serial Number (ESN)
  • Critical Parts List (CPL)
  • Model
  • Horsepower and RPM rating

Find the dataplate on ISM Engines

The dataplate is located on the fuel pump side of the engine, on the rocker housing. It includes the following information:

  • Engine Serial Number (ESN)
  • Critical Parts List (CPL)
  • Model
  • Horsepower and RPM rating
  • Emission statement (if applicable)

Find the dataplate on ISX Engines

The dataplate is located on top of the rocker lever cover. It includes the following information:

  • Engine Serial Number (ESN)
  • Critical Parts List (CPL)
  • Model
  • Horsepower and RPM rating

Find the dataplate on QSK45 and QSK60 Engines

The dataplate is located on the left bank side of the front gear cover. It includes the following information:

  • Engine Serial Number (ESN)
  • Critical Parts List (CPL)
  • Horsepower and RPM rating
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