Questions tagged [part-identification]

The part-identification tag is used for questions regarding what kit a particular block is from, or what its purpose is.

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47 votes
2 answers
36k views

How do I identify a LEGO part?

Over the vast years of collecting bricks of various sizes and sets, I find that during my free builds I run low on a specific type of brick. How can I go about identifying what the brick is named and ...
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43 votes
2 answers
5k views

What is this light grey LEGO plate with six sides (hexagon)?

I've been unable to find this specific piece's name, just for the reason that it is a very unorthodox piece.
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33 votes
3 answers
10k views

Are there LEGO plates without the word "LEGO" on the studs?

I came across this image of the "LEGO Stack Overflow Hat" which is a hat made out of LEGO. The individual who made the hat asserted, "it's 100% LEGO," but if you look closely at the hat, you'll see ...
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29 votes
2 answers
30k views

How are LEGO bricks categorized?

What are the names and categories of LEGO bricks? Is there a consistent naming scheme? Does Lego have an official name or identification for different pieces?
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25 votes
1 answer
5k views

A technology building set that is not LEGO Technic, K'NEX, or Meccano. Can you help me with the name?

I remember a building/technology set from years ago and I'm trying to recall its name. The parts were plastic and could be joined by slots down their sides. A stud on the end of other pieces fitted ...
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24 votes
2 answers
5k views

What is the name/part number of this 1x1 LEGO brick, used to make "cat eyes"?

Could anyone please tell me the name/part number of the LEGO component used for the cat's eyes?
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23 votes
3 answers
1k views

What piece is this ARC-170 Starfighter cockpit?

I got these with the ARC-170 LEGO Starfighter (archived): I'd like to get more if possible. They are a part of the cockpit.
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  • 343
23 votes
2 answers
2k views

Minifig rotatable legs on a stick - what is this?

What kind of piece is this? Emboss says "(c)2003 The LEGO Group" and there is a 4303 number below. I browsed Peeron a little but didn't find anything similar. There are two red handles, one rotates ...
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  • 523
23 votes
1 answer
4k views

What LEGO set are these decorated tiles from?

I have a box of LEGO from when my husband was younger and I have been going through and putting them in their sets for my son. I have now run out of the instruction books and still have some sets left....
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  • 231
20 votes
2 answers
5k views

Are all of these police minifigs from LEGO?

While I'm glad LEGO is taking a principled stand on recent events, I've seen this set of police minifigs circulating on social media portraying the evolution of LEGO Police through time: I don't have ...
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  • 5,090
19 votes
2 answers
4k views

What are the arched things above a wheel called?

I have a bunch of second hand bricks and some are "wheel wells" for the lack of better words. I would like to find out how I use them for example at bricklink, but then I need to find the name for ...
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  • 495
18 votes
1 answer
2k views

What is this piece slightly longer than a 2x2 plate with grooves and a hole?

Once again, I need the collective wisdom of this group to identify a mystery LEGO element! I did a search for "2x2"and went through scores of Bricklink pages, but I couldn't find this particular ...
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18 votes
1 answer
2k views

Need help to identify a piece - green, like a 1x2 plate with 4 angled cubes hanging off at odd angles

Can you please help me to identify this? I have no idea what to do with it.
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18 votes
2 answers
2k views

What is the name of the Lego product that snaps together with knobs?

I remember owning a very strange Lego set, but have forgotten the name. The pieces were similar to Technic parts, but different. They were green rounded frames and connected using purple squares with ...
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18 votes
1 answer
3k views

Got a weird trans-purple cone part as extra in 71043-1 Hogwarts Castle

I bought a 71043-1 and one of the extra parts is this trans-purple "cone" with the smaller through-hole, which couldn't identify since there is no element number, only the mould number which ...
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18 votes
1 answer
3k views

What piece is this? It's a hard one, and a very small one. It's 2x1 I believe, and it could possibly be an accessory

This is the piece I'm looking for, because I'd like to build this microscale train myself. It may very well be the handles of two levers glued to the rest of the train, but I really don't want to ...
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  • 291
17 votes
2 answers
6k views

Have I got a mystery croissant lurking in my Lego collection?

I've loved every minute of a massive LEGO sort-out recently, but a mystery imposter lurked in there. My kids swear blind that we've had these two types of croissant for over seven years, but I don't ...
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17 votes
1 answer
8k views

What is this? Is it LEGO? Dark Green, detailed mouldings, roughly trapezoid shaped

I've been sifting through a few gifted bins of LEGO with a small percentage of trash and clone-brands stuff. I've had pretty good luck with finding new and strange LEGO pieces on bricklink, but this ...
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  • 5,090
17 votes
1 answer
765 views

What's the thing between the pant legs?

What is the piece that holds the pant legs together called? Is there an "official1" name? Or is there just a commonly agreed on term? 1Official meaning something mentioned, even in passing, by Lego ...
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17 votes
2 answers
9k views

How to tell the different ages of pieces

I know that LEGO bricks have changed over the years, with regards to moulding pip locations, element i.d. numbers printed inside etc, but I was wondering if anyone knows when these changes happened? ...
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  • 171
17 votes
4 answers
3k views

Are these bricks old LEGO/Duplo clones?

Can anyone identify these bricks, which I suspect are LEGO clones. They may be more than 30 years old. I bought them on ebay as Betta Bilda from LEGO/Duplo dealer. Some BB was included, but these are ...
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  • 211
17 votes
1 answer
1k views

What LEGO clone brand are these with 4-peg studs?

I think this was a present in the mid-late 80s. Very sophisticated building blocks for top-view apartment-room design. They also had furniture and appliances. Can anyone tell me the brand etc?
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  • 171
16 votes
2 answers
3k views

Is this grid fin piece a standard LEGO brick?

I'm trying to identify the circled part from this MoC, but I haven't been successful in doing so. On the one hand, the creator of this has called out two other parts in it (not shown here) as being ...
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16 votes
2 answers
2k views

Stained glass windows on The Throneroom of Cedrica

Can anyone explain how to make the stained glass windows in builds like The Throneroom of Cedrica?
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16 votes
1 answer
1k views

Is this element some kind of Technic connector?

I am thoroughly confused about an element I have come across: I have never seen a piece quite like this. It's unlike any Technic connector I've seen, so I doubt if that is what it's for. The two ...
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  • 1,389
16 votes
1 answer
3k views

What LEGO piece is this arc with ball joint?

I cannot find a part number on it. It has the official logos on the studs. What is this? What theme does it originate from? It looks like a combination of a 4x4 plate, a 5x2 plate and an arc with a ...
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16 votes
2 answers
5k views

What is this Lego piece - Yellow with handles and an octagonal section?

It clearly says Lego on it, but I have no idea what it is. The only number inside is 4-01.
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  • 163
16 votes
2 answers
4k views

Is this a real Technic cloak?

I found a cloak piece in some used LEGO I bought from a former LEGO employee. The cloak does not say LEGO on it, but it fits perfectly onto Technic figures with a satisfying pop and matches the ...
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  • 5,146
16 votes
1 answer
1k views

Is this a LEGO part? rectangular base with sides, and a bar extending from the middle

I distinctly remember separating this part from some Bionicle parts. But is it a original LEGO part? There are no part numbers or other marks on this piece - except for a "2" (seems to be ...
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  • 169
16 votes
1 answer
1k views

What are these Technic "Zapfen" ("stoppers") called in English?

What are these pieces called in English? Google translator doesn't help in this case...
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  • 2,155
16 votes
1 answer
2k views

Can you identify this bevelled grey 2x1 piece?

I found this incredible MOC of the Ghost In The Shell robot and found a piece I have never seen before. Is it a LEGO piece and, if so, can you help me identify it? Link to the image source: https://...
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16 votes
2 answers
14k views

General guidelines to identify real LEGO pieces from fake or copy?

I see a lot of questions here about if a certain piece is really LEGO or not and this made me wonder if there is any guideline to follow to identify real LEGO piece from the duplicate or fake one? I ...
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15 votes
6 answers
7k views

What is piece 4211642 from 10179 - UCE Millenium Falcon?

I'm working on making sure I have all necessary pieces for 10179: Ultimate Collector's Edition Millenium Falcon (a painstaking process, to say the least). I received the set not entirely complete, ...
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  • 1,030
14 votes
2 answers
3k views

What are the thick red cylinders in 80104?

What are the thick red cylinders with handles (not the drumsticks) that two minifigs are holding in set 80104 supposed to represent?
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  • 853
14 votes
2 answers
5k views

What piece has one prong on one end and four on the other?

Yesterday I wanted to answer a question with this part in mind, but I couldn't find it in any of the databases I looked in. After finding this part in my collection, I tried to look for its part ...
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14 votes
1 answer
4k views

What's the part number of this LEGO element?

Can anybody help me identify this part?
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14 votes
1 answer
2k views

What is the LEGO code for this part used as a camcorder?

Can anyone help me ID this part for my son? I think it comes from when I was a kid in the 80s-90s. I THINK that it had a VHS-type piece tacked to its side to be a camcorder, but don't quote me on that....
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  • 141
14 votes
1 answer
1k views

Part identification of an element used in the snout of a micro-scale whale

I need help identifying this part: I would think something bionicle, but going through the list on bricklink I couldn't find anything, it's sort of similar to a bionicle eye, but not quite.
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14 votes
1 answer
989 views

Part identification: 40 tooth gear from The LEGO Movie

While watching clip of the LEGO Movie, I found a strange part: Slightly earlier in the video, its part number is shown as 3649. But it doesn't match the 40t gear I know nor the pictures on bricklink....
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  • 143
13 votes
2 answers
7k views

I don’t know what LEGO piece this is with a large hole going through its center

Can anyone tell me what LEGO piece this is?
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13 votes
2 answers
2k views

In what set is this brick used?

In which set is this LEGO brick used? There is no number in it and it's original LEGO. The only number on it is "A 1".
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  • 131
13 votes
1 answer
2k views

What set is this piece used for

i have a Lego from the 80s. I can see there are space pieces in grey and blue. I am wondering if this piece is for a space set and if so which one. Any help much appreciated!!
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  • 131
13 votes
1 answer
4k views

What are the brick numbers of the bricks circled in this image?

What are the brick numbers of the ones circled in this image?
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13 votes
4 answers
2k views

Are these trees LEGO parts?

I've come across some trees from some bulk purchases I've made, and I can not determine if these are LEGO or "compatible" parts. Any ideas? The tree on the left is an official tree but the one in the ...
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13 votes
1 answer
970 views

Identify rug pieces in this library scene

Can anyone identify the roundish pieces that make up the rug in this scene?
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12 votes
2 answers
3k views

How is the curved top of the WWII Aid station tent made?

How did they make the curved top of the tent in the WWII Aid station?
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12 votes
4 answers
5k views

Can you identify these (possibly) LEGO horses?

We got these old LEGO-compatible horses from the LEGO collection that used to belong to my wife's brothers (which means they are probably 20-30 years old). I'm wondering if they are genuine LEGO ...
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  • 379
12 votes
2 answers
4k views

How old is this brick?

How old would you say this brick is? It has the code 2837 on the inside of it. Any info would be appreciated.
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12 votes
1 answer
2k views

Glasses in the pour technique

I'd like to replicate this build The glasses that hold the claw/liquid appear to have a slightly wider mouth then the ones I have. Do I need a particular 1x1 round to do this?
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12 votes
1 answer
1k views

What parts are these (showerhead)?

Just trying to identify all the metallic colored parts here and the gray one at the top... assuming they are LEGO:
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