Without nameplate information or a serial number, you may need to have a Cummins Onan dealer in your area look at the set to identify it. To find the nearest location, use the Cummins Onan Dealer Locator or call 1-800-888-6626 and press 1 when prompted by the recording. It will have the model and serial number of all major components. Handy for when you are trying to find parts on older RV's. My Cummins SN is an 8 digit #. After you get the engine SN take a look at the Cummins Quick Serve site. Once you register and put your SN in you can get a lot of good info.

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.

If you’re wondering, “How do I find my Cummins engine serial number?” then the experts at Hubei July Industrial and Trade Co., Ltd 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 ISC and ISL engine serial numbers consistently have the data plate situated on the top side of the gear housing.

5.9 Cummins Engine Serial Number Location

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.

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 Hubei July, 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 Isb Engine Serial Number Location

Excellent customer service and support

Cummins 4bt Engine Serial Number Location