Setobrick

LEGO part 3943b: Cone 4 x 4 x 2, Axle Hole [Plain]

Bricks Round and Cones22 colours158 sets

LEGO part LEGO part 3943b: Cone 4 x 4 x 2, Axle Hole [Plain]

Specifications

Reference3943b
CategoryBricks Round and Cones
MaterialABS plastic
Colours22
Sets158
Listed pieces322
First appearance1995
Latest appearance2026
Element (Black)4143243 · 394326
Most common colourBlack
Main themesStar Wars, Creator, Disney
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 3943b, Cone 4 x 4 x 2, Axle Hole [Plain], belongs to the Bricks Round and Cones category. It exists in 22 colours and appears in 158 sets of our database, from 1995 to 2026, for a total of 322 listed pieces. Its most common colour is Black.

Number 3943b identifies the shape and is moulded under the part. Each colour also has its own element ID, the one Pick a Brick uses: in black, it is 4143243.

Part 3943b through the years

The oldest set in our database that contains part 3943b is 6339 Shuttle Launch Pad, released in 1995 in the Town theme. It is still in use: the most recent set featuring it, 910055 Gold Mine Expedition, dates from 2026.

Its peak year is 2026, with 10 sets containing it. The set with the most copies is 4795 Ogel Underwater Base and AT Sub: 12 copies, against an average of 2 per set.

It is spread across several themes, led by Star Wars (11%), Creator (6%) and Disney (6%). With 158 sets, it ranks no. 832 of 2,731 parts in our database and no. 24 of 78 in the Bricks Round and Cones category.

Sets containing part 3943b, by period

PeriodSets
1995-199910
2000-200941
2010-201958
2020-202649

Colours of part 3943b

9 colours appear in only one set: coral (41936 Pencil Holder), bright light blue (41055 Cinderella's Romantic Castle), orange (7171 Mos Espa Podrace), light gray (6339 Shuttle Launch Pad), yellow (4982 Mrs. Puff's Boating School), …

Colour (element ID)SetsPiecesExample sets
Black4143243 · 39432657118921767616160265
White6108662 · 42880513857603519217621309
Dark Bluish Gray4296788 · 42106492653764357139110188
Dark Gray4125548 · 39432783210019715310029
Sand Green4593756 · 4508645615470938624757
Dark Turquoise621059467311224134641251
Dark Blue614475536710404144740335
Medium Azure652357933770593116443264
Blue6417949 · 418900427432223428
Green4125285 · 3943282471717186
Light Bluish Gray6199554 · 449765223777870821
Bright Light Orange6559512227542231175
Red6606104 · 394321224329043305
Coral63451901341936
Bright Light Blue60562401241055
Orange4125269127171
Light Gray394302116339
Yellow4513997 · 394324114982
Bright Green63744561180032
Dark Pink65595111131175
Lime65595131131175
Dark Purple6607832 · 45659671172166

Where to buy part 3943b

Setopedia shows no prices: they vary by colour, condition and seller. Amazon links are affiliate links.

Search part 3943b on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 3943b

Sets ranked by popularity that include at least one part 3943b, in any colour.

More parts in the Bricks Round and Cones category

All parts in the Bricks Round and Cones category

Frequently asked questions

How many LEGO sets include part 3943b?

Part 3943b (Cone 4 x 4 x 2, Axle Hole [Plain]) appears in 158 sets listed on Setopedia, from 1995 to 2026, in any colour.

Which LEGO set contains the most copies of part 3943b?

Set 4795 Ogel Underwater Base and AT Sub, released in 2002, contains 12 copies, the highest count in our database. On average, a set containing part 3943b has 2.

Which colours does LEGO part 3943b come in?

22 colours are listed for part 3943b. The most common is Black, found in 57 sets.

What is the rarest colour of part 3943b?

According to our inventories, it is light gray, found in only 1 set (6339 Shuttle Launch Pad).

What is the element ID of part 3943b in black?

In black, part 3943b has element ID 4143243 or 394326. Number 3943b is the mould number, the same for every colour.

Is LEGO part 3943b still used in recent sets?

Yes: it appears in sets released in 2026, such as 910055 Gold Mine Expedition.

Where can I buy LEGO part 3943b individually?

Single parts 3943b can be ordered on Pick a Brick (lego.com) in colours currently produced, or on BrickLink for older colours. The part is also included in the sets listed on this page.