Yamaha Motorcycle Engine Serial Number Decoder

Manufacturers used the numbers to identify the vehicles in the way they wanted until the 1980s. Yamaha wasn't an exception in this matter. Most of the manufacturers had nine months to implement this new rule on their assemblies. So if you plan to buy a bike of that year, the Yamaha VIN decoder can ask you to add a few more characters. The number was shorter, however, it can be decoded into the new VIN. If you buy a newer version of the bike, you will see a 17-characters code on the registration card that can tell you all the specs about it.

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  2. Decode Your Yamaha VIN Number - MotorcycleSpareParts

The VIN code usually starts with the letters such as JYA that refer to the world manufacturer code. The Yamaha VIN decoder will tell you that J stands for Japan, the country where it was manufactured. Y stands for Yamaha, the label of the company and A determines the type of the vehicle. We have a motorcycle in this case. If you see any other letters and the owner of the bike looks suspicious, you should definitely decode the full code to compare the bike you see with the data from the decoder.

If you wish to buy a bike, the owner tells you the year, but the Yamaha ATV VIN decoder gives you another year, don't panic. The year in the code means the model year of the motor, but not the year when it was manufactured. Of course, it will be strange if the difference is more than a year or two. You can buy a new bike of the next year in autumn or in December of this year. It's a common practice of many companies.

Decoding your Yamaha VIN number: 1. Find the VIN on your motorcycle. If you have a traditional motorcycle, it will be on the right side of the steering stem, just below the handlebars. If you have a scooter, check the stem. If it’s not there, it will be on a metal plate affixed to the frame. Make sure none of the digits are missing from the VIN. Yamaha Engine Number Decoder Re: 9-Digit VIN mystery explained!! Just had reply from Yamaha, they say it is 1985 virago750 model number 55R made for Japanese domestic market, but for maintenance purposes use 1994 model! The VIN code usually starts with the letters such as JYA that refer to the world manufacturer code.

VIN Location

The VIN code is placed on non-removable parts of Yamaha bikes. If you see any scratches or deformations, use the Yamaha motorcycle VIN decoder to check whether this number is genuine. If you see that such a code doesn't exist, don't buy this bike even if the price is too low. Let's take a closer look at the locations of the VIN on your bike. There are three main places:

Yamaha VIN Decoder, Lookup and Yamaha VIN Check
  • The right part of the head pipe or the steering tube (different names for one and the same part). Here you will see a shorter code for the models produced prior to 1982 or the 17-characters code for the models produced after 1981 and later. It's stamped vertically.
  • Take a look at the left part of the steering tube to find the printed card with the code and some additional information. For the Yamaha motor decoder, you will need only the VIN code and nothing more. However, the actual year of manufacture is indicated there. And yes, the code is located on the both sides of the tube.
  • The third place is on the case of the motor. You can find it next to or behind the clutch cover just on the right part of the motor. It's a small pad that's looking into the sky. Yamaha XJ550 models have the code is placed left to right while on other models it's front to back. The vintage Yamaha VIN decoder will decipher any code from any location on the bike.

The Yamaha VIN decoder ATV will tell you the information about the type of the engine, its specs and the type of fuel you can use. You should compare the code on the registration card with the code on all the locations on the bike. If you see any difference, it means the bike was repaired after an accident. If the codes are the same, the bike has its genuine parts that were produced in Japan.

Yamaha Sample VIN

  • JYARM06YXGA002282 — 2016 Yamaha Fz07c - (689 cc), Motorcycle - Sport
  • JYAVP32EXDA003396 — 2013 Yamaha XVS1300CT CT (1300CC), Motorcycle - Cruiser
  • JYARJ16E0AA020429 — 2010 Yamaha YZF-R6 - (600 cc), Motorcycle - Sport
  • JYAVM01E76A087480 — 2006 Yamaha XVS650 - (650CC), Motorcycle - Cruiser
  • JYAVP02E42A018410 — 2002 Yamaha XV1600 AS (1602CC), Motorcycle - Cruiser

Does anyone know of a site to decode engine serial numbers for yamaha motorcycles?
A friend of mine just bought a 4 wheeler that someone put an inline 4 cylinder yamaha motorcycle engine in. He believes it is 750cc but wants to find out exactly what it is in order to purchase parts.

Any help is appreciated.


Try this one..

Thanks. Do you know if there's a section on there to plug in just the engine serial number and find what bikethe motor came from?
The engine serial # is

send a pm to bignumber1 or jamahadim on here
there both yamaha dealers and should be able to help
all the decoders i find you need the whole vin


I'm not certain you can 'decode' motorcycleengine serial numbers, only the VIN. It's possible that this information could have recently changed making it available, but not to my knowledge (or lack thereof). I'll be interested in learning if this has changed.

Motorcycles are just like cars! The vin# match. but this one looks like a pre 80's before they started using 17 digit vin#. I already tried to help this one, as he posted it elsewhere on this forum under the name QUAD750. the method of decoading that I gave him only works on 17 digit vin's.

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The first three digits in a yamaha part code represent the model and will match the first 3 in a pre 1981 VIN. From what I can tell that's not a motorcycle engine.

After 1981 Yamaha went with the long VIN still common today. The model code wasn't always clearly represented in the VIN but they continued along that theme for most of the part numbers. ITSdarted becoming more difficult to separate them when Yamaha started producing multi fit parts. Say a fuel cap for an 1100 V* fitting the 650 and other models.

That engine code however is specific to a pre 1981 yamaha. The only problem is that the 2AX code doesn't show anywhere in the parts fiche's I can find online. That doesn't mean it's not there, just not in the street bike databases I can find. Stop buy you local dealer with that engine code and they should be able to help you out.

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I called Yamaha and they were unable to find that engine number in their data base. It is an older number. Sorry.

Bummer ! I love all the info about where to check it out but my problem is a little different . My bike was part of a pair of bikes in pieces that the previous owner threw back together. My frame and engine may not match . My problem is I cannot find where the engine or frame numbers are located. Anyone ? Please help a brother out

Decode Your Yamaha VIN Number - MotorcycleSpareParts

Can you post a couple pictures of the engine?

Soon as I take some and figure out how to post them Bubba .Thanks I appreciate the quick reply

OK I have been doing some research and found out a few things . MY bike was repainted blue,its original color was a metallic yellow orange .It has drum brakes front and back My most educated guess is a 71 XS B1 . Any thoughts ? I read that were only about 10.000 or so made