LEGO part 6573: Technic Gear Differential, 24 -16 Tooth with Clutch on Both Sides

Specifications
| Reference | 6573 |
|---|---|
| Category | Technic Gears |
| Material | ABS plastic |
| Colours | 3 |
| Sets | 52 |
| Listed pieces | 61 |
| First appearance | 1995 |
| Latest appearance | 2026 |
| Element (Dark Gray) | 657327 |
LEGO part 6573, Technic Gear Differential, 24 -16 Tooth with Clutch on Both Sides, belongs to the Technic Gears category. It exists in 3 colours and appears in 52 sets of our database, from 1995 to 2026, for a total of 61 listed pieces. Its most common colour is Dark Gray.
Number 6573 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 gray, it is 657327.
Part 6573 through the years
The oldest set in our database that contains part 6573 is 8440 Formula Flash, released in 1995 in the Technic theme. It is still in use: the most recent set featuring it, 42242 Mercedes-Benz Unimog U 5023 with Crane, dates from 2026.
Its peak year is 2006, with 5 sets containing it. The set with the most copies is 8466 4x4 Off Roader: 3 copies, against an average of 1.2 per set.
It is spread across several themes, led by Technic (58%), Educational and Dacta (21%) and Racers (10%). With 52 sets, it ranks no. 1,629 of 2,731 parts in our database and no. 26 of 46 in the Technic Gears category.
Sets containing part 6573, by period
| Period | Sets | |
|---|---|---|
| 1995-1999 | 14 | |
| 2000-2009 | 28 | |
| 2010-2019 | 6 | |
| 2020-2026 | 4 |
Where to buy part 6573
Setopedia shows no prices: they vary by colour, condition and seller. Amazon links are affiliate links.
Sets that include part 6573
Sets ranked by popularity that include at least one part 6573, in any colour.
3D42110Land Rover Defender2019 · 2,573 piecesView the set
3D421294x4 Mercedes-Benz Zetros Trial Truck2021 · 2,131 piecesView the set
421146x6 Volvo Articulated Hauler2020 · 2,193 piecesView the set
420706x6 All Terrain Tow Truck2017 · 1,862 piecesView the set
3D8285Tow Truck2006 · 1,879 piecesView the set
3D8448Super Street Sensation1999 · 1,406 piecesView the set
3D8110 Mercedes-Benz Unimog U4002011 · 2,048 pieces
8674 Ferrari F1 Racer 1:82006 · 1,246 pieces
8386 Ferrari F1 Racer 1:102004 · 719 pieces
3D8274 Combine Harvester2007 · 1,025 pieces
8421 Mobile Crane2005 · 1,885 pieces
8455 Backhoe Loader2003 · 704 pieces
8458 Silver Champion2000 · 1,433 pieces
8479 Barcode Multi-Set1997 · 1,274 pieces
8284 Tractor2006 · 872 pieces
8653 Enzo Ferrari 1:102005 · 1,360 pieces
3D8466 4x4 Off Roader2001 · 1,103 pieces
8440 Formula Flash1995 · 418 pieces
3D8063 Tractor with Trailer2009 · 1,100 pieces
8436 Truck2004 · 1,032 pieces
8461 Williams F1 Team Racer2002 · 1,484 pieces
8145 Ferrari 599 GTB Fiorano 1:102007 · 1,326 pieces
8287 Motor Box2006 · 93 pieces
8459 Pneumatic Front-End Loader1997 · 595 pieces
8435 4WD2004 · 763 pieces
3D8464 Pneumatic Front End Loader2001 · 583 pieces
8428 Red Hot Machine with CD-ROM1998 · 472 pieces
8408 Desert Ranger1996 · 289 pieces
42242 Mercedes-Benz Unimog U 5023 with Crane2026 · 1,189 pieces
42177 Mercedes-Benz G 500 PROFESSIONAL Line2024 · 2,891 pieces
2000426 Mindstorms EV3 Element Accessory Pack2014 · 108 pieces- 5003201 Technic Gears2014 · 43 pieces
9695 Mindstorms Education Resource Set2010 · 819 pieces
9648 Education Resource Set [NXT Supplemental Set]2006 · 674 pieces
7477 T-1 Typhoon vs. T-Rex2005 · 608 pieces
8439 Front End Loader2004 · 585 pieces
9649 Technology Resource Set2003 · 1,154 pieces
9794 ROBOLAB Team Challenge Set Version 2.5 [USB]2003 · 833 pieces
8454 Rescue Truck2003 · 634 pieces
9793 ROBOLAB Team Challenge Set Version 2.5 [Serial Transmitter]2002 · 835 pieces
10076 TECHNIC Gear Wheels2002 · 39 pieces
3804 Robotics Invention System, Version 2.02001 · 720 pieces
9665 Mechanical Engineering Set2001 · 322 pieces
9723 Cities and Transportation2000 · 394 pieces
9747 Robotics Invention System, Version 1.51999 · 731 pieces
9790 ROBOLAB Team Challenge Set (Serial)1999 · 727 pieces
8445 Indy Storm / Formula 1 Racer1999 · 434 pieces
9780 ROBOLAB Starter Building Set1998 · 1,712 pieces
9719 Robotics Invention System, Version 1.01998 · 737 pieces
8432 Red Hot Machine1998 · 471 pieces
8437 Future Car1997 · 418 pieces
9609 Technology Resource Set1995 · 1,730 pieces
Related parts
Technic Gear 12 Tooth Bevel6589 · Paired part
Technic Driving Ring Extension, 4 Ridges32187 · Paired part
Technic Driving Ring Extension, 8 Ridges35186 · Paired part
Technic Driving Ring 3L18947 · Paired part
Technic Driving Ring 2L, 4 Ridges6539 · Paired part
Often found with part 6573
Parts that share the most sets with part 6573, based on set inventories.
Technic Universal Joint 4L [Complete Assembly]9244 · 22 shared sets
Technic Engine Cylinder with Side Slots2850a · 25 shared sets
Technic Gear 24 Tooth Crown with Reinforcements [New Style]3650c · 30 shared sets
Technic Engine Crankshaft Center2854 · 35 shared sets
Technic Gear 16 Tooth with Round Holes [Old Style]4019 · 33 shared sets
Technic Gear 16 Tooth with Clutch [Toothed]6542a · 14 shared sets
Technic Gear 8 Tooth3647 · 43 shared sets
Technic Engine Piston Round2851 · 27 shared sets
More parts in the Technic Gears category
87407 Technic Gear 20 Tooth Bevel with Pin Hole66 sets
62821b Technic Gear Differential with Inner Tabs and Closed Center, 28 Bevel Teeth [Beveled Edge]64 sets
99009 Technic Turntable Small Top63 sets
99010 Technic Turntable Small Base, 28 Tooth62 sets
57520 Technic Tread Sprocket Wheel Small 6 Tooth57 sets
32905 Technic Worm Gear Type 249 sets
18939 Technic Turntable Large Type 3 Base49 sets
69778 Technic Gear 12 Tooth with Axle Hole45 sets
Frequently asked questions
How many LEGO sets include part 6573?
Part 6573 (Technic Gear Differential, 24 -16 Tooth with Clutch on Both Sides) appears in 52 sets listed on Setopedia, from 1995 to 2026, in any colour.
Which LEGO set contains the most copies of part 6573?
Set 8466 4x4 Off Roader, released in 2001, contains 3 copies, the highest count in our database. On average, a set containing part 6573 has 1.2.
Which colours does LEGO part 6573 come in?
3 colours are listed for part 6573. The most common is Dark Gray, found in 27 sets.
What is the rarest colour of part 6573?
According to our inventories, it is red, found in only 5 sets (42110 Land Rover Defender, 42129 4x4 Mercedes-Benz Zetros Trial Truck).
What is the element ID of part 6573 in dark gray?
In dark gray, part 6573 has element ID 657327. Number 6573 is the mould number, the same for every colour.
Is LEGO part 6573 still used in recent sets?
Yes: it appears in sets released in 2026, such as 42242 Mercedes-Benz Unimog U 5023 with Crane.
Where can I buy LEGO part 6573 individually?
Single parts 6573 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.
