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LEGO part 3743: Technic Gear Rack 1 x 4

Technic Gears7 colours247 sets

LEGO part LEGO part 3743: Technic Gear Rack 1 x 4

Specifications

Reference3743
CategoryTechnic Gears
MaterialABS plastic
Colours7
Sets247
Listed pieces865
First appearance1995
Latest appearance2026
Element (Light Bluish Gray)6457283 · 4211450
Most common colourLight Bluish Gray
Main themesStar Wars, Technic, City
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 3743, Technic Gear Rack 1 x 4, belongs to the Technic Gears category. It exists in 7 colours and appears in 247 sets of our database, from 1995 to 2026, for a total of 865 listed pieces. Its most common colour is Light Bluish Gray.

Number 3743 identifies the shape and is moulded under the part. Each colour also has its own element ID, the one Pick a Brick uses: in light bluish gray, it is 6457283.

Part 3743 through the years

The oldest set in our database that contains part 3743 is 8485 Control Centre / Control II, released in 1995 in the Technic theme. It is still in use: the most recent set featuring it, 11377 The Lord of the Rings: Minas Tirith, dates from 2026.

Its peak year is 2026, with 18 sets containing it. The set with the most copies is 10030 Imperial Star Destroyer: 39 copies, against an average of 3.5 per set.

It is spread across several themes, led by Star Wars (19%), Technic (13%) and City (9%). With 247 sets, it ranks no. 629 of 2,731 parts in our database and no. 6 of 46 in the Technic Gears category.

Sets containing part 3743, by period

PeriodSets
1995-199916
2000-200967
2010-201978
2020-202686

Colours of part 3743

2 colours appear in only one set: sand green (11377 The Lord of the Rings: Minas Tirith) and tan (77982 Spinosaurus Dinosaur Escape).

Colour (element ID)SetsPiecesExample sets
Light Bluish Gray6457283 · 421145097286603377104375192
Black6457282 · 420576094296753371030575192
Light Gray374302301901003055718458
White6457281 · 42504652465102742105875159
Reddish Brown6503736323103657539710335
Sand Green66087941411377
Tan6627274 · 3743051177982

Where to buy part 3743

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

Search part 3743 on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 3743

Sets ranked by popularity that include at least one part 3743, in any colour.

Often found with part 3743

Parts that share the most sets with part 3743, based on set inventories.

More parts in the Technic Gears category

All parts in the Technic Gears category

Frequently asked questions

How many LEGO sets include part 3743?

Part 3743 (Technic Gear Rack 1 x 4) appears in 247 sets listed on Setopedia, from 1995 to 2026, in any colour.

Which LEGO set contains the most copies of part 3743?

Set 10030 Imperial Star Destroyer, released in 2002, contains 39 copies, the highest count in our database. On average, a set containing part 3743 has 3.5.

Which colours does LEGO part 3743 come in?

7 colours are listed for part 3743. The most common is Light Bluish Gray, found in 97 sets.

What is the rarest colour of part 3743?

According to our inventories, it is tan, found in only 1 set (77982 Spinosaurus Dinosaur Escape).

What is the element ID of part 3743 in light bluish gray?

In light bluish gray, part 3743 has element ID 6457283 or 4211450. Number 3743 is the mould number, the same for every colour.

Is LEGO part 3743 still used in recent sets?

Yes: it appears in sets released in 2026, such as 11377 The Lord of the Rings: Minas Tirith.

Where can I buy LEGO part 3743 individually?

Single parts 3743 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.