Setobrick

LEGO part 4045: Brick Round, Curved Triple 1 x 4 x 1

Bricks Round and Cones16 colours32 sets

LEGO part LEGO part 4045: Brick Round, Curved Triple 1 x 4 x 1

Specifications

Reference4045
CategoryBricks Round and Cones
MaterialABS plastic
Colours16
Sets32
Listed pieces62
First appearance2023
Latest appearance2026
Element (Tan)6445992
Most common colourTan
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 4045, Brick Round, Curved Triple 1 x 4 x 1, belongs to the Bricks Round and Cones category. It exists in 16 colours and appears in 32 sets of our database, from 2023 to 2026, for a total of 62 listed pieces. Its most common colour is Tan.

Number 4045 identifies the shape and is moulded under the part. Each colour also has its own element ID, the one Pick a Brick uses: in tan, it is 6445992.

Part 4045 through the years

The oldest set in our database that contains part 4045 is 71425 Diddy Kong's Mine Cart Ride Expansion Set, released in 2023 in the Super Mario theme. It is still in use: the most recent set featuring it, 11386 SpongeBob SquarePants: Bikini Bottom, dates from 2026.

Its peak year is 2026, with 14 sets containing it. The set with the most copies is 43291 Mini Belle & Tiana with Castle: 4 copies, against an average of 1.9 per set.

It is spread across several themes, led by Disney (25%), Pokémon (19%) and Super Mario (9%). With 32 sets, it ranks no. 2,093 of 2,731 parts in our database and no. 67 of 78 in the Bricks Round and Cones category.

Sets containing part 4045, by period

PeriodSets
20233
20245
202510
202614

Colours of part 4045

7 colours appear in only one set: bright green (43231 Asha's Cottage), dark brown (43290 Kevin & Dug), medium azure (43284 Mini Anna & Elsa), yellowish green (43291 Mini Belle & Tiana with Castle), orange (72157 Charmander and Geodude's Cavern Clash), … One of its colours is transparent: trans-red.

Colour (element ID)SetsPiecesExample sets
Tan6445992813721667542221355
Bright Light Yellow659178348409574329172156
Dark Purple646992434762944324076284
Lime646440133770787705443239
Bright Light Blue6522322261104131174
Trans-Red6544454267708110356
Yellow660591124721646668941
Blue6524986234328440801
Medium Lavender6591789231138643303
Bright Green64589881243231
Dark Brown65940311243290
Medium Azure65917841243284
Yellowish Green65919251243291
Orange65964311272157
Light Nougat65735331121361
Black65254081143303

Where to buy part 4045

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

Search part 4045 on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 4045

Sets ranked by popularity that include at least one part 4045, 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 4045?

Part 4045 (Brick Round, Curved Triple 1 x 4 x 1) appears in 32 sets listed on Setopedia, from 2023 to 2026, in any colour.

Which LEGO set contains the most copies of part 4045?

Set 43291 Mini Belle & Tiana with Castle, released in 2026, contains 4 copies, the highest count in our database. On average, a set containing part 4045 has 1.9.

Which colours does LEGO part 4045 come in?

16 colours are listed for part 4045. The most common is Tan, found in 8 sets.

What is the rarest colour of part 4045?

According to our inventories, it is light nougat, found in only 1 set (21361 Gremlins: Gizmo).

What is the element ID of part 4045 in tan?

In tan, part 4045 has element ID 6445992. Number 4045 is the mould number, the same for every colour.

Is LEGO part 4045 still used in recent sets?

Yes: it appears in sets released in 2026, such as 11386 SpongeBob SquarePants: Bikini Bottom.

Where can I buy LEGO part 4045 individually?

Single parts 4045 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.