Setobrick

LEGO part 3878: Top Hat

Minifig Headwear2 colours69 sets

LEGO part LEGO part 3878: Top Hat

Specifications

Reference3878
CategoryMinifig Headwear
MaterialABS plastic
Colours2
Sets69
Listed pieces140
First appearance1997
Latest appearance2026
Element (Black)4569092 · 4105175
Most common colourBlack
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 3878, Top Hat, belongs to the Minifig Headwear category. It exists in 2 colours and appears in 69 sets of our database, from 1997 to 2026, for a total of 140 listed pieces. Its most common colour is Black.

Number 3878 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 4569092.

Part 3878 through the years

The oldest set in our database that contains part 3878 is 4128 XL Freestyle Bucket, released in 1997 in the Freestyle theme. It is still in use: the most recent set featuring it, 76330 Batman Logo, dates from 2026.

Its peak year is 2023, with 5 sets containing it. The set with the most copies is 2000400 Enterprise RTS: 16 copies, against an average of 2 per set.

It is spread across several themes, led by Seasonal (32%), Educational and Dacta (20%) and Friends (7%). With 69 sets, it ranks no. 1,397 of 2,731 parts in our database and no. 4 of 28 in the Minifig Headwear category.

Sets containing part 3878, by period

PeriodSets
1997-19995
2000-200911
2010-201929
2020-202624

Colours of part 3878

Even its least common colour, medium lavender, can be found in 3 sets.

Colour (element ID)SetsPiecesExample sets
Black4569092 · 410517566137103121029771741
Medium Lavender6148169337062040289561902

Where to buy part 3878

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

Search part 3878 on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 3878

Sets ranked by popularity that include at least one part 3878, in any colour.

Often found with part 3878

Parts that share the most sets with part 3878, based on set inventories.

Minifigures using part 3878

Part 3878 is used in 13 catalogued minifigure variants. Characters:

More parts in the Minifig Headwear category

All parts in the Minifig Headwear category

Frequently asked questions

How many LEGO sets include part 3878?

Part 3878 (Top Hat) appears in 69 sets listed on Setopedia, from 1997 to 2026, in any colour.

Which LEGO set contains the most copies of part 3878?

Set 2000400 Enterprise RTS, released in 2003, contains 16 copies, the highest count in our database. On average, a set containing part 3878 has 2.

Which colours does LEGO part 3878 come in?

2 colours are listed for part 3878. The most common is Black, found in 66 sets.

What is the rarest colour of part 3878?

According to our inventories, it is medium lavender, found in only 3 sets (70620 NINJAGO City, 40289 Diagon Alley).

What is the element ID of part 3878 in black?

In black, part 3878 has element ID 4569092 or 4105175. Number 3878 is the mould number, the same for every colour.

Is LEGO part 3878 still used in recent sets?

Yes: it appears in sets released in 2026, such as 76330 Batman Logo.

Where can I buy LEGO part 3878 individually?

Single parts 3878 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.