Cummins®Engine Identification
sERIAL NUMBER LOOKUP
Identify Your Cummins® Engine
Discover the serial number of your Cummins® engine with this user-friendly guide.
Cummins® engines are found in a wide variety of vehicles and equipment. Familiarizing yourself with your Cummins® Engine Serial Number (ESN) can save you a lot of time when ordering parts for your engine. Owner’s manuals often go astray, so KMP have compiled a helpful guide that simplifies the process of locating and deciphering Cummins® engine data plates and on-block serial numbers. Cummins® engine serial numbers have a more traditional serial number format compared to Caterpillar® ESNs. Cummins® ESNs traditionally consist of eight numeric digits. Some earlier models may have serial numbers as short as 6 digits. These serial numbers follow a numerical sequence based on the order in which the engines were produced on the assembly line. There is no specific designation for different engine models. In addition to serial numbers, Cummins® engines feature something slightly unique called a CPL, which stands for Critical Parts List or Control Parts List. The CPL is a list of basic engine parts and timing specifications. Unlike ESNs, there are fewer CPLs since multiple engines can have the same CPL. Some basic engine parts can be ordered by CPL if the ESN is unavailable.Cummins® Engine Data Plate Location
To locate the engine serial number of a Cummins® engine, you can refer to the data plate affixed to the engine. The data plate is a valuable resource as it often provides additional information like the CPL, horsepower, and RPM rating. However, locating the data plate can be challenging as its position varies depending on the engine model. To find the specific location of the data plate for your engine, consult your owner’s manual. If you no longer have the manual please see below table indicating the data plate locations for some of the more popular Cummins® engine models.Cummins® Engine Serial Number Location
Cummins® Engine Serial Numbers (ESNs) traditionally consist of eight digits without any accompanying letters. They are arranged in sequential order, reflecting the assembly sequence of the engines.Cummins® Critical Parts List (CPL)
In case you are unable to find the ESN, you can refer to the Critical Parts List (CPL), which is specific to Cummins® engines. The CPL is a compilation of basic engine components. While different engines may share the same CPL, there are fewer CPLs compared to ESNs. The CPL is a 4 digit number that identifies the basic components and timing specifications approved for the engine and the maximum power rating.WHERE TO FIND YOUR CUMMINS® SERIAL NUMBER
| Cummins Engine® | Where To Find Your Cummins® Engine Serial Number (ESN) | Cummins® Engine Number Lookup |
|---|---|---|
| B3.3/QSB3.3 Engines | The data plate with all the necessary information is affixed above the starting motor, typically in the form of a metal tag. |  |
| 4BT3.9/6BT5.9 Engines | The data plate with all the necessary information is affixed to the front cover or gear housing of the engine, typically in the form of a long, narrow metal tag. In case the tag has been misplaced or is not legible the ESN may also be stamped on the block above the oil cooler housing. |  |
| B4.5/QSB4.5 | The dataplate is located on the engine rocker cover. If the engine dataplate is not legible, the engine serial number can be found on the engine block, on top of the lubricating oil cooler housing. NOTE: Not all engines will have ECM dataplates. |  |
| 6C8.3 Engines | The data plate with all the necessary information is affixed to the front cover or gear housing of the engine, typically in the form of a long, narrow metal tag. In case the tag has been misplaced or is not legible, the ESN may also be stamped on block above the oil cooler housing. |  |
| ISB/QSB Engines | The dataplate is typically located on the engine rocker cover, but may be located on the side of the gear housing. In case the tag has been misplaced or is not legible, the ESN may be stamped in the block above the oil cooler housing. The dataplate includes the following information:
|  |
| ISC/QSC and ISL/QSL Engines | The dataplate is located on the top side of the gear housing. In case the tag has been misplaced or is not legible, the ESN may be stamped in the block above the oil cooler housing. The dataplate includes the following information:
|  |
| ISM/QSM Engines | The dataplate is located on the fuel pump side of the engine, on the rocker housing. It includes the following information:
|  |
| ISX/QSX Engines | The dataplate is located on top of the rocker lever cover. It includes the following information:
|  |
| K19/K38/K50 | The engine dataplate for the older K38 and K50 engines is located on the rear of the right bank side of the engine. The dataplate on the current K38 and K50 engines is located on the left bank side of the front gear cover. It includes:
|  |
| L10 | The engine dataplate is located on the fuel pump side of the rocker housing. The engine dataplate provides model identification. It includes:
|  |
| M11 | The engine dataplate is located on the fuel pump side of the rocker housing. The engine dataplate provides model identification. It includes:
|  |
| N14 | The engine dataplate is located on the front cover gear housing.It includes the following information:
|  |
| NH-NT Series | The engine dataplate is located on the front cover gear housing.It includes the following information:
|  |
| QSK23 | The dataplate is located on the side of the engine block. It includes the following information:
|  |
| QSK45 and QSK60 | The dataplate is located on the side of the front gear cover. It includes the following information:
|  |
| QST30 | The dataplate is located on the side of the front gear cover. It includes the following information:
|  |
| V28/1710 | The engine dataplate is located on the left bank side of the engine. It includes the following information:
|  |
| V903 | The engine dataplate is located on the left bank side of the engine. It includes the following information:
|  |
Can’t locate your Cummins® data plate?
If you’re unable to locate the data plate or if your engine model is not listed above, Cummins® also stamp the engine serial number into most engine blocks. Alternatively, the ESN can sometimes be located on the engine control module (ECM) data plates.ORDER KMP BRAND REPLACEMENT PARTS SUITABLE FOR CUMMINS® engines:
Cummins® engines have earned a well-deserved reputation for their exceptional reliability. However, to ensure your engine operates at peak efficiency, regular servicing and the use of high-quality replacement parts are essential. That’s why KMP has developed a comprehensive range of durable replacement parts that offer both reliability and affordability.
We take great pride in the quality of our products – when you choose KMP, you can have complete confidence in the performance and dependability of our parts.
Whether you’re a trade professional or a retail customer, we have convenient options for you to purchase KMP Brand products. You can easily order parts through our user-friendly ecommerce store or register for a trade account to access additional benefits.
HIGH PERFORMANCE PARTS
YOU CAN RELY ON
KMP Brand® is dedicated to optimizing the performance of your machines by offering high-performance replacement parts. Our aim is to enhance endurance, extend the equipment's life cycle, improve serviceability, and minimize downtime. Each of our parts is meticulously designed to cater to specific applications, striking the perfect balance between performance, durability, and cost-effectiveness. You can rely on us to be your trusted source for all your replacement part needs, specifically tailored for Cummins®engines.
- MAXIMIZE ENGINE LIFECYCLE
- MAXIMIZE ENDURANCE
- MAXIMIZE SERVICEABILITY
- REDUCE DOWNTIME
Whilst we strive to provide accurate data, on occasion information may be omitted or inaccurate. Please contact us at sales@kmpbrand.com if you identify an error or omission.