Setobrick

LEGO part 73831: Plate 2 x 3 with 1 x 1 Cutout

Plates9 colours139 sets

LEGO part LEGO part 73831: Plate 2 x 3 with 1 x 1 Cutout

Specifications

Reference73831
CategoryPlates
MaterialABS plastic
Colours9
Sets139
Listed pieces372
First appearance2021
Latest appearance2026
Element (Light Bluish Gray)6421522
Most common colourLight Bluish Gray
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 73831, Plate 2 x 3 with 1 x 1 Cutout, belongs to the Plates category. It exists in 9 colours and appears in 139 sets of our database, from 2021 to 2026, for a total of 372 listed pieces. Its most common colour is Light Bluish Gray.

Number 73831 identifies the shape and is moulded under the part. Each colour also has its own element ID, the one Pick a Brick uses: in light bluish gray, it is 6421522.

Part 73831 through the years

The oldest set in our database that contains part 73831 is 10294 Titanic, released in 2021 in the Icons theme. It is still in use: the most recent set featuring it, 11377 The Lord of the Rings: Minas Tirith, dates from 2026.

Its peak year is 2026, with 53 sets containing it. The set with the most copies is 31221 Gustav Klimt : The Kiss: 18 copies, against an average of 2.7 per set.

It is spread across several themes, led by Icons (14%), Super Mario (9%) and Speed Champions (9%). With 139 sets, it ranks no. 916 of 2,731 parts in our database and no. 39 of 39 in the Plates category.

Sets containing part 73831, by period

PeriodSets
20214
20228
202316
202426
202532
202653

Colours of part 73831

Its rarest colour, blue, appears only in set 71785 Jay's Titan Mech.

Colour (element ID)SetsPiecesExample sets
Light Bluish Gray642152243106103184322271819
Medium Nougat63366653793103051029475341
Black6493691306776923910059910057
Dark Brown63366642965103001030510316
Dark Pink645174268427054222642698
Sand Green643274649103174217342184
Tan661774233312212137277985
Bright Green66030882193122172050
Blue64317821271785

Where to buy part 73831

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

Search part 73831 on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 73831

Sets ranked by popularity that include at least one part 73831, in any colour.

Often found with part 73831

Parts that share the most sets with part 73831, based on set inventories.

More parts in the Plates category

All parts in the Plates category

Frequently asked questions

How many LEGO sets include part 73831?

Part 73831 (Plate 2 x 3 with 1 x 1 Cutout) appears in 139 sets listed on Setopedia, from 2021 to 2026, in any colour.

Which LEGO set contains the most copies of part 73831?

Set 31221 Gustav Klimt : The Kiss, released in 2026, contains 18 copies, the highest count in our database. On average, a set containing part 73831 has 2.7.

Which colours does LEGO part 73831 come in?

9 colours are listed for part 73831. The most common is Light Bluish Gray, found in 43 sets.

What is the rarest colour of part 73831?

According to our inventories, it is blue, found in only 1 set (71785 Jay's Titan Mech).

What is the element ID of part 73831 in light bluish gray?

In light bluish gray, part 73831 has element ID 6421522. Number 73831 is the mould number, the same for every colour.

Is LEGO part 73831 still used in recent sets?

Yes: it appears in sets released in 2026, such as 11377 The Lord of the Rings: Minas Tirith.

Where can I buy LEGO part 73831 individually?

Single parts 73831 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.