Any guesses?

Ferris

We bought a grab bag of pieces and this was in there. No idea what it was from and there is no part number on it except for a 4 and an 03 on the back. I’ve tried looking on a few different sites but no luck!

ggkk

3145

bricksbythepound

yes 3145 Tipper

Oldfan

@Lawrence as this part (and several others) comes up quite frequently in posts like this, maybe there could be a page on the site that displays these commonly-unknown parts for the benefit of the users? The LEGO watch bezel would be another one that is regularly posted in "what is this" forum posts across the web...

(not to take anything away from the very helpful posters who answer questions like these very quickly, you folks are the best!)

Lawrence

The best thing to do would be to add tags to items that people would be likely to describe them as

qwertyboy

@Oldfan like this?
http://www.qwertyboy.org/files/parts.php

Niek.
(But then BrickOwl-ified...)

Brick-Cat

That part takes me back to my miss spent youth building skips for my Lego town’s rubbish ?

Oldfan

@qwertyboy Perfect!

Jay37

I'm sure we've all struggled with identifying pieces. Took me ages to work out what a Bionicle eye was given it looks nothing like an eye and if you asked me to pick a word to describe it, eye would not even make the list!