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LEGO part 4019: Technic Gear 16 Tooth with Round Holes [Old Style]

Technic Gears4 colours134 sets

LEGO part LEGO part 4019: Technic Gear 16 Tooth with Round Holes [Old Style]

Specifications

Reference4019
CategoryTechnic Gears
MaterialABS plastic
Colours4
Sets134
Listed pieces602
First appearance1995
Latest appearance2013
Element (Light Gray)4107176 · 401902
Most common colourLight Gray
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 4019, Technic Gear 16 Tooth with Round Holes [Old Style], belongs to the Technic Gears category. It exists in 4 colours and appears in 134 sets of our database, from 1995 to 2013, for a total of 602 listed pieces. Its most common colour is Light Gray.

Number 4019 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 gray, it is 4107176.

Part 4019 through the years

The oldest set in our database that contains part 4019 is 6195 Neptune Discovery Lab, released in 1995 in the Aquazone theme. No set in our database uses it after 2013, the year of 10240 Red Five X-Wing Starfighter. To get it today, look for older sets or buy it second-hand.

Its peak year is 1997, with 14 sets containing it. The set with the most copies is 970622 16 Tooth Gears (Pack of 50): 50 copies, against an average of 4.5 per set.

It is spread across several themes, led by Technic (56%), Educational and Dacta (13%) and Mindstorms (7%). With 134 sets, it ranks no. 938 of 2,731 parts in our database and no. 13 of 46 in the Technic Gears category.

Sets containing part 4019, by period

PeriodSets
1995-199950
2000-200972
2010-201312

Colours of part 4019

Its rarest colour, dark turquoise, appears only in set 8505 Amazon / Jungle Slizer.

Colour (element ID)SetsPiecesExample sets
Light Gray4107176 · 40190277329848084487191
Light Bluish Gray4562487 · 4211563552681024080888258
Red4189405 · 41418122497548279
Dark Turquoise4120111118505

Where to buy part 4019

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

Search part 4019 on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 4019

Sets ranked by popularity that include at least one part 4019, in any colour.

Related parts

Often found with part 4019

Parts that share the most sets with part 4019, 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 4019?

Part 4019 (Technic Gear 16 Tooth with Round Holes [Old Style]) appears in 134 sets listed on Setopedia, from 1995 to 2013, in any colour.

Which LEGO set contains the most copies of part 4019?

Set 970622 16 Tooth Gears (Pack of 50), released in 2002, contains 50 copies, the highest count in our database. On average, a set containing part 4019 has 4.5.

Which colours does LEGO part 4019 come in?

4 colours are listed for part 4019. The most common is Light Gray, found in 77 sets.

What is the rarest colour of part 4019?

According to our inventories, it is dark turquoise, found in only 1 set (8505 Amazon / Jungle Slizer).

What is the element ID of part 4019 in light gray?

In light gray, part 4019 has element ID 4107176 or 401902. Number 4019 is the mould number, the same for every colour.

Is LEGO part 4019 still used in recent sets?

Not in our database: its last set dates from 2013 (10240 Red Five X-Wing Starfighter). Look for it in second-hand sets or on BrickLink.

Where can I buy LEGO part 4019 individually?

Single parts 4019 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.