LEGO part 18939: Technic Turntable Large Type 3 Base

Specifications
| Reference | 18939 |
|---|---|
| Category | Technic Gears |
| Material | ABS plastic |
| Colours | 1 |
| Sets | 49 |
| Listed pieces | 72 |
| First appearance | 2015 |
| Latest appearance | 2026 |
| Element (Light Bluish Gray) | 6109285 |
LEGO part 18939, Technic Turntable Large Type 3 Base, belongs to the Technic Gears category. It exists in 1 colours and appears in 49 sets of our database, from 2015 to 2026, for a total of 72 listed pieces. Its most common colour is Light Bluish Gray.
Number 18939 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 6109285.
Part 18939 through the years
The oldest set in our database that contains part 18939 is 42043 Mercedes-Benz Arocs 3245, released in 2015 in the Technic theme. It is still in use: the most recent set featuring it, 45834 BIOGLOW Future Edition Set, dates from 2026.
Its peak year is 2021, with 7 sets containing it. The set with the most copies is 75313 AT-AT: 8 copies, against an average of 1.5 per set.
It is spread across several themes, led by Technic (53%), FIRST LEGO League (10%) and Super Heroes DC (6%). With 49 sets, it ranks no. 1,685 of 2,731 parts in our database and no. 28 of 46 in the Technic Gears category.
Sets containing part 18939, by period
| Period | Sets | |
|---|---|---|
| 2015 | 2 | |
| 2016 | 5 | |
| 2017 | 3 | |
| 2018 | 5 | |
| 2019 | 7 | |
| 2020 | 5 | |
| 2021 | 7 | |
| 2022 | 2 | |
| 2023 | 5 | |
| 2024 | 2 | |
| 2025 | 3 | |
| 2026 | 3 |
Where to buy part 18939
Setopedia shows no prices: they vary by colour, condition and seller. Amazon links are affiliate links.
Sets that include part 18939
Sets ranked by popularity that include at least one part 18939, in any colour.
42128Heavy Duty Tow Truck2021 · 2,017 piecesView the set
42175Volvo FMX Truck & EC230 Electric Excavator2024 · 2,274 piecesView the set
42146Liebherr Crawler Crane LR 130002023 · 2,883 piecesView the set
42144Material Handler2022 · 835 piecesView the set
76240Batmobile Tumbler2021 · 2,049 piecesView the set
76193The Guardians' Ship2021 · 1,901 piecesView the set
3D42121 Heavy-Duty Excavator2021 · 569 pieces
42082 Rough Terrain Crane2018 · 4,056 pieces
42179 Planet Earth and Moon in Orbit2024 · 526 pieces
76210 Hulkbuster2022 · 4,049 pieces
3D42099 4x4 X-treme Off-Roader2019 · 958 pieces
75313 AT-AT2021 · 6,785 pieces
42055 Bucket Wheel Excavator2016 · 3,929 pieces
42158 NASA Mars Rover Perseverance2023 · 1,132 pieces
51515 Robot Inventor2020 · 949 pieces
3D76139 1989 Batmobile2019 · 3,310 pieces
3D42108 Mobile Crane2020 · 1,292 pieces
42100 Liebherr R 9800 Excavator2019 · 4,108 pieces
42043 Mercedes-Benz Arocs 32452015 · 2,793 pieces
42070 6x6 All Terrain Tow Truck2017 · 1,862 pieces
3D42054 CLAAS XERION 5000 TRAC VC2016 · 1,976 pieces
3D42042 Crawler Crane2015 · 1,400 pieces
3D42112 Cement Mixer2020 · 1,161 pieces
75362 Ahsoka Tano's T-6 Jedi Shuttle2023 · 608 pieces
42097 Compact Crawler Crane2019 · 920 pieces
3D42094 Tracked Loader2019 · 827 pieces
3D42053 Volvo EW160E2016 · 1,166 pieces
3D42080 Forest Machine2018 · 1,003 pieces
10268 Vestas Wind Turbine2018 · 834 pieces
75219 Imperial AT-Hauler2018 · 829 pieces
3D42049 Mine Loader2016 · 476 pieces
70632 Quake Mech2017 · 1,202 pieces
70916 The Batwing2017 · 1,053 pieces
80023 Monkie Kid's Team Dronecopter2021 · 1,471 pieces
45681 SPIKE Prime Expansion Set (v2)2021 · 604 pieces
45680 SPIKE Prime Expansion Set2020 · 603 pieces- 45834 BIOGLOW Future Edition Set2026 · 1,990 pieces
42242 Mercedes-Benz Unimog U 5023 with Crane2026 · 1,189 pieces
11389 Project Hail Mary2026 · 830 pieces
42215 Volvo EC500 Hybrid Excavator2025 · 2,359 pieces
76325 Avengers: Age of Ultron Quinjet2025 · 1,131 pieces
42211 Lunar Outpost Moon Rover Space Vehicle2025 · 1,082 pieces
910008 Modular Construction Site2023 · 3,374 pieces
42157 John Deere 948L-II Skidder2023 · 1,492 pieces
45813 RePLAY Challenge Kit2020 · 1,600 pieces
45809 CITY SHAPER Challenge Kit2019 · 2,158 pieces
4000041 MRI Scanner2019 · 556 pieces
45806 INTO ORBIT Challenge Kit2018 · 1,910 pieces
45802 ANIMAL ALLIES Challenge Kit2016 · 2,167 pieces
Related parts
Often found with part 18939
Parts that share the most sets with part 18939, based on set inventories.
Technic Beam Frame 5 x 7 with 3 x 5 Opening Thick64179 · 36 shared sets
Technic Panel 3 x 11 x 115458 · 27 shared sets
Technic Turntable Small Base, 28 Tooth99010 · 17 shared sets
Technic Turntable Small Top99009 · 17 shared sets
Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes]14720 · 25 shared sets
Technic Beam Triangle Thin [Type II]99773 · 25 shared sets
Technic Axle 4 with Centre Stop99008 · 28 shared sets
Technic Connector Beam 3 x 339793 · 21 shared sets
More parts in the Technic Gears category
57520 Technic Tread Sprocket Wheel Small 6 Tooth57 sets
6573 Technic Gear Differential, 24 -16 Tooth with Clutch on Both Sides52 sets
32905 Technic Worm Gear Type 249 sets
69778 Technic Gear 12 Tooth with Axle Hole45 sets
18947 Technic Driving Ring 3L43 sets
64781 Technic Gear Rack 1 x 13 with Axle and Pin Holes34 sets
46372 Technic Gear 28 Tooth Double Bevel34 sets
69779 Technic Gear 20 Tooth with Axle Hole [+ Opening]33 sets
Frequently asked questions
How many LEGO sets include part 18939?
Part 18939 (Technic Turntable Large Type 3 Base) appears in 49 sets listed on Setopedia, from 2015 to 2026, in any colour.
Which LEGO set contains the most copies of part 18939?
Set 75313 AT-AT, released in 2021, contains 8 copies, the highest count in our database. On average, a set containing part 18939 has 1.5.
Which colours does LEGO part 18939 come in?
1 colours are listed for part 18939. The most common is Light Bluish Gray, found in 49 sets.
What is the element ID of part 18939 in light bluish gray?
In light bluish gray, part 18939 has element ID 6109285. Number 18939 is the mould number, the same for every colour.
Is LEGO part 18939 still used in recent sets?
Yes: it appears in sets released in 2026, such as 45834 BIOGLOW Future Edition Set.
Where can I buy LEGO part 18939 individually?
Single parts 18939 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.

Technic Turntable Large Type 3 Top, 60 Tooth18938 · Paired part