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Mercury Outboard Serial Number Lookup
Mercury Outboard Serial Number Lookup

How to Find Your Mercury Boat Engine Serial Number

Where is the serial number on a Mercury outboard?

For most Mercury outboard engines 8hp and higher, the serial number is located halfway down the transom bracket on the right (starboard) side, just below the powerhead. On 6hp and smaller engines, it's found on top of the swivel bracket.

Many boaters take a quick photo of their serial number with their phone—this simple habit can save hours of troubleshooting when ordering parts.

We highly recommend you take a picture of your ESN tag and keep the photo on your mobile phone in case the tag becomes unreadable or if you need this information when you’re not near your boat.

**Are you looking for Mercury Outboard parts and products for your specific engine? Check out PartsVu's Mercury Maintenance Parts Library. Common maintenance parts and products are presented by engine model allowing you to easily find the parts you need.**

What About a Mercruiser Serial Number?

On a Mercruiser sterndrive or inboard engine, typically, the tag is on the block near the starter. But, sometimes, it's down by the starter on the engine block, near the flywheel, or on the flame arrestor.

All too often, the ESN tag on a Mercruiser is not the easiest to find, so definitely take a picture and save it on your cell phone.

**Are you looking for Mercruiser parts and products for your specific engine? Check out PartsVu's Mercruiser category page. We've worked to make it as easy as possible to find the parts and products you need.**


Why Do You Need to Know Your Mercury Serial Number?


mercury outboard serial number lookup - righthand side of engine shaft
The placement of the Mercury serial number label varies a bit from engine to engine. However, it is typically located on the righthand side of the engine.

Simply put, your Mercury serial number will allow you to identify and order the right parts for your engine model and year.

Mercury manufactures many, many different models and often variations of each model. While one thermostat might be the proper selection for some variations of a given engine model, there’s no guarantee that it will be compatible will all variations of that engine—knowing your Mercury serial number is the key.

As if matters weren’t confusing enough, sometimes Mercury will change an engine model design midway thru a given engine model year.

Therefore, Mercury Marine parts are often segmented by serial number ranges. Knowing your serial number will allow you to make sure that you are ordering the right parts, whether you are utilizing a Mercury engine schematic/Mercury outboard parts diagrams, the Mercury parts library, the complete list of Mercruiser parts library, or other resources.

Mercury Maintenance Parts Selection Tool

How do I find out what year my Mercury outboard is by serial number?

To determine the year of your Mercury outboard, use the serial number on the engine and reference a Mercury Marine serial number-to-year chart. You can also enter the serial number into the Mercury Marine or PartsVu lookup tool to identify the exact year and model.

What is the serial number location on a Mercury 9.9 outboard?

The serial number for a 9.9hp Mercury engines is usually located on the top of the swivel bracket, which may require tilting the motor to see clearly.

Where is the serial number on a Mercruiser engine?

It’s typically found near the starter or flywheel, or on the flame arrestor. Always take a photo of it for safekeeping.

How can I identify my Mercury outboard by serial number?

Use the serial number lookup on the PartsVu Mercury Maintenance Library or the Mercury Marine parts catalog to determine the engine model and year.

What year is my Mercury outboard motor?

Once you locate the serial number, compare it against Mercury’s official serial number/year chart, or enter it online in a lookup tool.

Need parts for your Mercury engine? Shop all Mercury outboards at PartsVu.

341 comments

Hello Rodney,

Thank you for reaching out to us. I apologize for the delayed response. Utilizing your serial number I was able to locate the two part numbers associated with the carburetor assembly.

853720T20 comes up for 20 hp Tiller models, this part is no longer available, but the replacement part is 1300-8M0129551. 8M0129554 comes up for 20 hp Remote models, this part is also no longer available, but the replacement part is 1300-8M0167275.

We currently don’t have these in stock but both can be sourced directly from Mercury and be had in our warehouse within 3-7 business days.

Best,
Mario

Mario Alvarez,

Hello Al,

Thank you for reaching out to us. Sorry for the delayed response. I ran the serial number with mercury and they were unable to pull up any information. I can probably find it going thru the archive catalogs, how many cylinders is this motor?

Best,
Mario

Mario Alvarez,

Hello Ben,

Thank you for reaching out to us. Sorry for the delayed response. What information are you looking for? The manufacture date is 11.02.1984

Best,
Mario

Mario Alvarez,

I’m trying to find the year of my Mercury the serial number that I can find is B173679 it’s a 25hp 2 stroke

Thomas Burgett,

I have a Mercury 4hp 2 stroke serial number 5590507, if I iiam reading the information right was this motor made in Belgium, I have been entering the number wrong on other sites I thought it was 590507 based on the Blue stripe and number 4 it appears it was made in 1972 would that be correct

Benny Mays,

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