A guide to identifying your Kubota engine and knowing which information you’ll need for parts, service and emissions documentation.

Whether you’re ordering replacement parts, requesting technical support or locating an emissions certificate, having the correct engine information is the first step. 

One of the most common points of confusion is the difference between a Kubota engine’s emissions label and its serial number label. While both help identify your engine, they serve different purposes and contain different information. This guide explains where to find each one, what information they provide and when you’ll need them.

What Is an Emissions Label? 

The emissions label identifies the emissions standards your Kubota engine is certified to meet and contains important regulatory information used for emissions compliance. 

While emissions certificates exist at a regulatory level, most equipment owners only need to locate and read the emissions label on the engine itself. 

The emissions label includes key information such as: 

• Engine family designation 

• Applicable emissions tier or standard 

• Regulatory compliance statements 

To ensure an emissions certificate matches your engine, first locate the emissions label. On Kubota engines, the emissions label is located on the valve cover and contains the information needed to identify the correct engine family. Please note that the engine serial number is NOT on this label.

Emission labels may vary depending on engine type and certification body (EPA, EU, China, etc.), but each contains the engine family designation and regulatory information needed to identify the appropriate emissions certificate. 

Understanding the Engine Family 

The engine family designation is one of the most important pieces of information on the emissions label. 

It is used by regulatory agencies to identify certified engine families and is the best way to locate the appropriate emissions certificate for your engine. For EPA certified engines, the first character of the family name also represents the engine’s model year. 

If you need a copy of your engine’s EPA emissions certificate or emissions warranty information, you can request it using KEA’s online Emissions Certificate Lookup tool. 

What Is a Serial Number? 

Your engine’s serial number is the unique identifier for your specific Kubota engine. 

Unlike the emissions label, which identifies a certified engine family, the serial number identifies an individual engine and is used when ordering parts, requesting service or obtaining technical support. 

Kubota engine serial numbers are stamped directly into the engine block and displayed on the engine serial number label typically on the valve cover. It is designed to be easily accessible during maintenance. 

Your serial number helps ensure you receive: 

• The correct replacement parts 

• Accurate service and technical support 

• Warranty assistance 

• Model-specific engine information 

The serial number location varies by engine model, but every Kubota engine has a unique serial number used for parts, service and warranty support. If you are not sure where to find the serial number of your Kubota engine you can learn more on where the serial number is located on the serial number page.

Emissions Label vs. Serial Number: Which One Do You Need? 

Although both help identify your engine, they are used for different purposes. 

If you need to…	Use the Emissions Label	Use the Serial Number
Request an emissions certificate	✓
Verify emissions compliance	✓
Identify the engine family	✓
Order replacement parts		✓
Request technical support		✓
Verify warranty information		✓
Identify your specific engine		✓

Knowing which identifier to provide helps ensure you receive the correct information, documentation and support the first time. 

Need Help Finding Your Engine Information? 

If you’re looking for an EPA emissions certificate, use KEA’s Emissions Certificate Lookup to locate the correct documentation for your engine family. 

Need to find or decode your engine’s serial number? Visit KEA’s Serial Number Information resource for model-specific guidance and identification tools. 

If you still need assistance identifying your engine, your local Kubota Engine distributor or authorized service provider can help you locate the correct information for parts, service and warranty support.