Cummins Isx Engine Serial Number Location

  1. Cummins M11 Serial Number Location
  2. Cummins Engine By Serial Number

For over 100 years, Cummins engines have been powering all different types of machines around the world. It’s crucial to know where to find Cummins engine serial numbers when you need parts and repairs.

The engine and model numbers are engraved on a metallic plate located on the driver's side front cover. All Cummins serial numbers are eight numeric digits. If the identification plate is missing, the engine serial number is stamped on the passenger side of the cylinder block, near the rear of the engine.

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If you’re wondering, “How do I find my Cummins engine serial number?” then the experts at Diesel Pro Power, Inc. are here to help. Read our guide for confirming the ESN on your engine, or get in touch for further assistance from a knowledgeable member of our team.

Cummins Engine Serial Number Locations

The easiest way to learn where to find your Cummins ESN is by consulting your owner’s manual. If you don’t have the original manual, have no fear. Cummins makes it relatively easy to find the data you require.

The good news is, you can always identify the engine serial number as well as other vital information such as RPM rating, horsepower and a Critical Parts List (CPL) on the data plate. However, finding the data plate can be difficult because they are frequently located in different positions depending on the model and year.

The following is our list of where to find Cummins ESNs for your particular model to save time and ensure you have the correct information when ordering parts.

Cummins ISB engine serial numbers are commonly found on the rocker cover. In some cases, they are printed on the side of the gear housing.

Cummins ISM engine serial numbers are found on the rocker housing located on the fuel pump side.

Cummins ISX engine serial numbers are conveniently located on top of the rocker level cover.

Cummins Isx Engine Serial Number Location

Cummins ISC and ISL engine serial numbers consistently have the data plate situated on the top side of the gear housing.

Cummins 6CTA engine serial numbers are listed on both a long metal tag fixed to the front gear housing and also stamped on the left side of the block above the oil cooler housing.

Cummins 4BT 3.9/6BT 5.9 engine serial numbers are also listed on the metal tag fixed to the front gear housing as well as the back left side near the oil cooler housing.

Cummins QSK45 and QSK60 engine serial numbers are visible on the front gear cover on the left side and sometimes on the rear of the block.

Cummins Isx Engine Serial Number Location

Ordering Parts Using Your Cummins Engine Serial Number

When you’re working on a diesel engine, it’s essential to have access to parts built for your particular make and model of equipment. Having your ESN handy saves time and ensures our representatives can pull the right products from our inventory and get them to you fast.

At Diesel Pro Power, we’re proud to provide all of the engine parts and supplies you’re looking for in one convenient place. We offer an easy-to-use website where you’ll be able to find parts for Cummins engines by serial number or model as well as:

Competitive prices on high-quality products

24-hour worldwide shipping


100% quality guarantee

Cummins engine serial number guide

Excellent customer service and support

Contact us online or call us at 888-433-4735 in the U.S. and 305-545-5588 internationally for help finding your Cummins engine serial number and assistance placing your order.

In the market for replacement parts for your Cummins diesel engine? It's important to know your engine serial number to ensure that you're getting the right fit for your engine.

In this post, we're taking you through where you can locate your ESN on your Cummins applications.

How to Find a Cummins Engine Serial Number

Cummins engines will have the engine serial number on the dataplate. The dataplate on an engine can be a great reference because it will often also include additional information, such as CPL, horsepower, and RPM rating. However, the dataplate can be hard to find, as it will be in different locations based on the model of the engine. The location of the dataplate for your engine will be in your owner's manual. If you've long since lost the physical owners manual, but can accessCummins Quickserve, you can see a digital copy of the owner's manual there.

If you don't have your owner's manual and don't have access to Quickserve, we have the locations for the dataplate on some of the more popular engine models.

  • Cummins ISB:either rocker cover or side of the gear housing
  • Cummins ISC and ISL:top side of the gear housing
  • Cummins ISM:rocker housing, towards the fuel pump side of the engine
  • Cummins ISX:top of the rocker lever cover
  • Cummins QSK45 and QSK60:rear of the engine block

Unable to find the dataplate or don't see your engine model listed above? It's okay. Cummins also stamps the engine serial number into the passenger side of the engine block for all models.

Do you need parts for your Cummins engine? Our ASE Certified Technicians can get you the parts you need!

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Cummins Engine Serial Number Format

Cummins engine serial numbers look more like a classic serial number thanCaterpillar ESNsdo. Cummins ESNs are eight digits long and are composed only of numbers. They go in a numerical sequence, based on which engine came first off the assembly line. There is no special designation for particular models.

Cummins engines do have something a little unique, called a CPL. CPL stands for Critical Parts List and is a list of the critical parts of the engine. There are fewer CPLs than ESNs because multiple engines can have the same CPLs. When ordering most major parts of an engine, providing a CPL will work just as well as supplying an ESN.

Cummins Isx Engine Serial Number Location

The Importance of Your Cummins Engine Serial Number

We know that finding and identifying your ESN can be a hassle, but knowing your ESN can be crucial when ordering parts for your diesel engine. Giving us part numbers will usually work if you are looking for a single part or two, but we absolutely need an ESN if you are looking for any kind of rebuild kit. If we know an ESN, we can look up all of the exact parts that your engine was built with, and know that were getting you the right stuff.

When you go tosome of our product pages, you will see a box under our price with the available options. One of the fields that appears is for you to input your Engine Serial Number. If you place an order without inputting your ESN for one of these products, you will get a call from us asking for it. We will always do this before processing an order if your ESN is required. We want to send you the wrong parts just as little as you want to get the wrong parts.

Cummins M11 Serial Number Location

Got questions? We've got answers! The staff at HHP has ASE Certified Technicians with years of diesel engine experience. Give us a call at 844-304-7688 if you have any questions!

Cummins Engine By Serial Number

Originally Posted October 20, 2017; Edited November 13, 2020