Petcock purchasing advice please (Part Number Confirmation)

[buickyouth]

On my SF, I've got a gas getting into my oil problem that I'd like to put to rest.

I've rebuilt the carbs and thought I had it licked. But it's happened again. I read somewhere recently that this problem can sometimes be caused by a leaky petcock as well and the left side is pretty leaky, which is where the flood seems to be happening.

I dug around a little and found a guy that has new old stock of both petcocks (which he'll sell me for $110).

The part numbers (on the boxes) for his are:
2G2-24500-03
2G2-24510-03

The part numbers for mine are:
2G2-24500-05-00
2G2-24510-05-00

They look to be identical. But I can't find any concrete info that confirms that these are the same part. What's the consensus here? Can anyone shed a little light on this for me?

Any help / advice is appreciated.

Thanks,
Ian
--

[bikerphil]

Yamaha part numbers are in the following format: 1P8-26311-90-00.

The first three letters/numbers (1P8 in this case) indicate the model code. The first three digits are the Model Code (every model in the Yamaha Product Line has a unique model number) all parts are given a Model Code of the first model they were used on.

The middle 5 digits are the actual part number (26311). This is the part you actually care about since this will tell you if the part is interchangable for your application or not.

The next two digits (90) are a design code. If this is different, the part may look different, but it is interchangable with the original part.

The last two digits are the color/finish code.


According to the above, I would say yes they will work for you.

[buickyouth]

Thanks Phil. Exactly the kind of information I was hoping for.

Ian
--

[fredintoon]

On my SF, I've got a gas getting into my oil problem that I'd like to put to rest.
I've rebuilt the carbs and thought I had it licked. But it's happened again. I read somewhere recently that this problem can sometimes be caused by a leaky petcock as well and the left side is pretty leaky, which is where the flood seems to be happening. --

Hi Ian,
yes, leaky petcocks will feed gas to the carbs when they shouldn't and yes, NOS petcocks are a good find BUT if the carbs overflow it's the carbs that need fixing.