Setobrick

LEGO part 3664: Duplo Brick 2 x 2 x 2 Curved Top

Duplo, Quatro and Primo8 colours40 sets

LEGO part LEGO part 3664: Duplo Brick 2 x 2 x 2 Curved Top

Specifications

Reference3664
CategoryDuplo, Quatro and Primo
MaterialABS plastic
Colours8
Sets40
Listed pieces55
First appearance1995
Latest appearance2026
Element (Yellow)6023350 · 366424
Most common colourYellow
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 3664, Duplo Brick 2 x 2 x 2 Curved Top, belongs to the Duplo, Quatro and Primo category. It exists in 8 colours and appears in 40 sets of our database, from 1995 to 2026, for a total of 55 listed pieces. Its most common colour is Yellow.

Number 3664 identifies the shape and is moulded under the part. Each colour also has its own element ID, the one Pick a Brick uses: in yellow, it is 6023350.

Part 3664 through the years

The oldest set in our database that contains part 3664 is 2368 XL Basic Bucket, released in 1995 in the Duplo theme. It is still in use: the most recent set featuring it, 10472 Animal Building Game, dates from 2026.

Its peak year is 2004, with 5 sets containing it. The set with the most copies is 9517 Measurement Activities: 4 copies, against an average of 1.4 per set.

The part is closely tied to the Duplo theme: 80% of the sets that contain it belong to it. With 40 sets, it ranks no. 1,862 of 2,731 parts in our database and no. 42 of 122 in the Duplo, Quatro and Primo category.

Sets containing part 3664, by period

PeriodSets
1995-19998
2000-200918
2010-20199
2020-20265

Colours of part 3664

2 colours appear in only one set: dark azure (10810 Push Train) and bright light yellow (10472 Animal Building Game).

Colour (element ID)SetsPiecesExample sets
Yellow6023350 · 366424182010817105665815
Red6386988 · 41984581721109351097845000
Bright Green465275634108171062210596
Bright Light Orange4520277 · 425969134563556043778
White6536630 · 6257524221044810895
Lime6250279221043910978
Dark Azure60563051110810
Bright Light Yellow64310851110472

Where to buy part 3664

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

Search part 3664 on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 3664

Sets ranked by popularity that include at least one part 3664, in any colour.

Often found with part 3664

Parts that share the most sets with part 3664, based on set inventories.

More parts in the Duplo, Quatro and Primo category

All parts in the Duplo, Quatro and Primo category

Frequently asked questions

How many LEGO sets include part 3664?

Part 3664 (Duplo Brick 2 x 2 x 2 Curved Top) appears in 40 sets listed on Setopedia, from 1995 to 2026, in any colour.

Which LEGO set contains the most copies of part 3664?

Set 9517 Measurement Activities, released in 1995, contains 4 copies, the highest count in our database. On average, a set containing part 3664 has 1.4.

Which colours does LEGO part 3664 come in?

8 colours are listed for part 3664. The most common is Yellow, found in 18 sets.

What is the rarest colour of part 3664?

According to our inventories, it is dark azure, found in only 1 set (10810 Push Train).

What is the element ID of part 3664 in yellow?

In yellow, part 3664 has element ID 6023350 or 366424. Number 3664 is the mould number, the same for every colour.

Is LEGO part 3664 still used in recent sets?

Yes: it appears in sets released in 2026, such as 10472 Animal Building Game.

Where can I buy LEGO part 3664 individually?

Single parts 3664 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.