Setobrick

LEGO part 43721: Brick Wedged, Sloped 45° 4 x 2 Left

Bricks Wedged15 colours88 sets

LEGO part LEGO part 43721: Brick Wedged, Sloped 45° 4 x 2 Left

Specifications

Reference43721
CategoryBricks Wedged
MaterialABS plastic
Colours15
Sets88
Listed pieces117
First appearance2002
Latest appearance2026
Element (White)4179873
Most common colourWhite
Main themesStar Wars, Creator, Icons
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 43721, Brick Wedged, Sloped 45° 4 x 2 Left, belongs to the Bricks Wedged category. It exists in 15 colours and appears in 88 sets of our database, from 2002 to 2026, for a total of 117 listed pieces. Its most common colour is White.

Number 43721 identifies the shape and is moulded under the part. Each colour also has its own element ID, the one Pick a Brick uses: in white, it is 4179873.

Part 43721 through the years

The oldest set in our database that contains part 43721 is 10026 Naboo Starfighter, released in 2002 in the Star Wars theme. It is still in use: the most recent set featuring it, 76354 S.H.I.E.L.D. Helicarrier, dates from 2026.

Its peak year is 2010, with 8 sets containing it. The set with the most copies is 7784 The Batmobile Ultimate Collectors' Edition: 5 copies, against an average of 1.3 per set.

It is spread across several themes, led by Star Wars (22%), Creator (19%) and Icons (8%). With 88 sets, it ranks no. 1,193 of 2,731 parts in our database and no. 43 of 76 in the Bricks Wedged category.

Sets containing part 43721, by period

PeriodSets
2002-200930
2010-201935
2020-202623

Colours of part 43721

4 colours appear in only one set: sand blue (4770 Blizzard Blaster), medium blue (31049 Twin Spin Helicopter), tan (4504 Millennium Falcon (Blue Box Version)) and green (4101 Wild Collection).

Colour (element ID)SetsPiecesExample sets
White41798732628102747639110240
Dark Bluish Gray4298580 · 42108702233710401032043222
Black6277462 · 45704011926311091029421322
Red6105970 · 4530012467062681597046
Yellow4262785 · 4179093331002672484778
Dark Red4585509 · 4236815241015510152
Dark Gray41805192344834099
Dark Blue6251250 · 4236813231026531126
Light Gray41805132272128357
Dark Orange6470093 · 418394322103314491
Light Bluish Gray6588815 · 6105967227531376354
Sand Blue4261787124770
Medium Blue61495651131049
Tan4180521114504
Green4180520114101

Where to buy part 43721

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

Search part 43721 on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 43721

Sets ranked by popularity that include at least one part 43721, in any colour.

Related parts

More parts in the Bricks Wedged category

All parts in the Bricks Wedged category

Frequently asked questions

How many LEGO sets include part 43721?

Part 43721 (Brick Wedged, Sloped 45° 4 x 2 Left) appears in 88 sets listed on Setopedia, from 2002 to 2026, in any colour.

Which LEGO set contains the most copies of part 43721?

Set 7784 The Batmobile Ultimate Collectors' Edition, released in 2006, contains 5 copies, the highest count in our database. On average, a set containing part 43721 has 1.3.

Which colours does LEGO part 43721 come in?

15 colours are listed for part 43721. The most common is White, found in 26 sets.

What is the rarest colour of part 43721?

According to our inventories, it is medium blue, found in only 1 set (31049 Twin Spin Helicopter).

What is the element ID of part 43721 in white?

In white, part 43721 has element ID 4179873. Number 43721 is the mould number, the same for every colour.

Is LEGO part 43721 still used in recent sets?

Yes: it appears in sets released in 2026, such as 76354 S.H.I.E.L.D. Helicarrier.

Where can I buy LEGO part 43721 individually?

Single parts 43721 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.