Setobrick

LEGO part 6378: Duplo Train Track 4 x 8 Curved [Short]

Duplo, Quatro and Primo3 colours26 sets

LEGO part LEGO part 6378: Duplo Train Track 4 x 8 Curved [Short]

Specifications

Reference6378
CategoryDuplo, Quatro and Primo
MaterialABS plastic
Colours3
Sets26
Listed pieces376
First appearance1995
Latest appearance2025
Element (Dark Bluish Gray)4211015
Most common colourDark Bluish Gray
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 6378, Duplo Train Track 4 x 8 Curved [Short], belongs to the Duplo, Quatro and Primo category. It exists in 3 colours and appears in 26 sets of our database, from 1995 to 2025, for a total of 376 listed pieces. Its most common colour is Dark Bluish Gray.

Number 6378 identifies the shape and is moulded under the part. Each colour also has its own element ID, the one Pick a Brick uses: in dark bluish gray, it is 4211015.

Part 6378 through the years

The oldest set in our database that contains part 6378 is 9175 Push Train, released in 1995 in the Educational and Dacta theme. It is still in use: the most recent set featuring it, 10428 Big Interactive Community Train, dates from 2025.

Its peak year is 2005, with 4 sets containing it. The set with the most copies is 3771 Train Starter Set: 24 copies, against an average of 14.5 per set.

The part is closely tied to the Duplo theme: 77% of the sets that contain it belong to it. With 26 sets, it ranks no. 2,356 of 2,731 parts in our database and no. 86 of 122 in the Duplo, Quatro and Primo category.

Sets containing part 6378, by period

PeriodSets
1995-19994
2000-200913
2010-20197
2020-20252

Colours of part 6378

Even its least common colour, light bluish gray, can be found in 5 sets.

Colour (element ID)SetsPiecesExample sets
Dark Bluish Gray421101513191105081081010507
Dark Gray6378278118912533252933
Light Bluish Gray6207493567108741087545025

Where to buy part 6378

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

Search part 6378 on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 6378

Sets ranked by popularity that include at least one part 6378, in any colour.

Often found with part 6378

Parts that share the most sets with part 6378, 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 6378?

Part 6378 (Duplo Train Track 4 x 8 Curved [Short]) appears in 26 sets listed on Setopedia, from 1995 to 2025, in any colour.

Which LEGO set contains the most copies of part 6378?

Set 3771 Train Starter Set, released in 2005, contains 24 copies, the highest count in our database. On average, a set containing part 6378 has 14.5.

Which colours does LEGO part 6378 come in?

3 colours are listed for part 6378. The most common is Dark Bluish Gray, found in 13 sets.

What is the rarest colour of part 6378?

According to our inventories, it is light bluish gray, found in only 5 sets (10874 Steam Train, 10875 Cargo Train).

What is the element ID of part 6378 in dark bluish gray?

In dark bluish gray, part 6378 has element ID 4211015. Number 6378 is the mould number, the same for every colour.

Is LEGO part 6378 still used in recent sets?

Yes: it appears in sets released in 2025, such as 10428 Big Interactive Community Train.

Where can I buy LEGO part 6378 individually?

Single parts 6378 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.