If you’re looking for parts for your Navistar diesel engine, you’ll probably need to know where to find the Engine Serial Number. Having this number helps ensure that you’re getting the correct diesel engine replacement parts when you shop.
Like with other diesel engines, finding the ESN on your Navistar can be tricky if you don’t know where to look. We’re here to help you find your Navistar diesel engine serial number!
In this post, we’re taking you through where to look for your ESN, and why it’s important when it comes to shopping for diesel engine replacement parts.
HOW TO FIND YOUR NAVISTAR ENGINE SERIAL NUMBER
Where to Begin Looking for Your Navistar Engine Serial Number
Navistar keeps the location of the ESN pretty simple and straight-forward. The engine serial number for Navistar engines can be found stamped on a pad on the block.
For engines that were built before 2000, that pad can be found on the left side of the block, just under the head-to-block parting line.
For engines newer than that, the pad is on the right side of the block, between the oil cooler and the top of the block.
What You Need Other Than Your Engine Serial Number
In most cases, if your Navistar engine was built after 1993, you’ll need to know more than just the engine serial number.
You’ll also want to know the engine model, model year, horsepower rating, and torque rating, which can all be found on the emission label. The emission label is located on the top of the rocker cover or intake manifold.
NAVISTAR ENGINE SERIAL NUMBER FORMAT
Navistar uses a standard format for their engine serial numbers, which is incredibly helpful for giving information about the engine.
- The first three digits indicate the engine model. In some cases, it will be the first four digits. For example, 466 or 570H.
- The number after the engine model indicates the configuration; B is for turbo JWAC, D is for naturally aspirated, G is for turbo air to air, H is for HEUI, and T is for turbo engines.
- Next is a number and letter combination which indicates the application. For example, A2 means a service vehicle and M2 means a truck.
- The next letter, U, will be the same across all engines. It indicates that the country of origin is the United States.
- The last seven digits indicate the unit number. This is different for each enigne.
THE IMPORTANCE OF YOUR NAVISTAR ENGINE SERIAL NUMBER
Knowing your ESN is very important in the upkeep of your diesel engine.
If you have a heavy duty diesel engine, you probably already know that they don’t follow the Make-Model-Year formula that automotive engines do.
It’s not always guaranteed that two engines will be exactly the same, even between engines of the same model. Having your engine serial numbers on hand is a surefire way to get a list of the exact parts to fit in your engine.
How Highway and Heavy Parts Can Help With Your Navistar Diesel Engine
When you’re working on your engine and you go to order parts, we’ll need to know your ESN so we can get that list of parts in your engine. This will guarantee that we get you the right components.
The only additional thing we would need to know is if you have over-sized bearings, or have otherwise changed the engine specifications, as that would not be accounted for in the ESN.
How to Use Your ESN When Ordering Parts
If you’re ordering your parts over the phone, you can just tell your salesperson your ESN.
If you’re ordering online from HHP’s website, you will see that some product pages have a field underneath the price where you can input your engine serial number when placing an order. If this field exists on a page, we will need your ESN.
Even if you don’t supply it when placing the order, you’ll still probably get a call or email from us asking for it. So, to get your order processed without delays, be sure to input it when you order.
Benefits of Ordering from Highway & Heavy Parts
When you order from Highway & Heavy Parts, you’ll also have access to:
- Our on-staff ASE Certified Technicians who can help diagnose your diesel engine problems
- Fast and accurate quotes
- A huge inventory of replacement parts
- Fast and easy ordering—call or shop online!
- Fast shipping
- Industry leading warranties
From diagnosis through delivery, we’re Highway & Heavy Parts.
Related Articles:
DIESEL ENGINE PRODUCT SPOTLIGHT: NAVISTAR HIGH-PRESSURE PUMP
DIESEL ENGINE PRODUCT SPOTLIGHT: NAVISTAR COMMON RAIL FUEL INJECTORS
DT466E AND DT530E LINER O-RING CHANGE
HHP SPOTLIGHT: ABOUT THE INTERNATIONAL / NAVISTAR DT466E DIESEL ENGINE INFRAME REBUILD KIT
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Originally Posted November 1, 2017; Edited March 10, 2021
