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LEGO part 32123a: Technic Bush 1/2 Smooth with Axle Hole Reduced

Technic Bushes7 colours230 sets

LEGO part LEGO part 32123a: Technic Bush 1/2 Smooth with Axle Hole Reduced

Specifications

Reference32123a
CategoryTechnic Bushes
MaterialABS plastic
Colours7
Sets230
Listed pieces2,570
First appearance1997
Latest appearance2007
Most common colourLight Gray
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 32123a, Technic Bush 1/2 Smooth with Axle Hole Reduced, belongs to the Technic Bushes category. It exists in 7 colours and appears in 230 sets of our database, from 1997 to 2007, for a total of 2,570 listed pieces. Its most common colour is Light Gray.

Number 32123a is the LEGO mould number, the one embossed under the part or inside the studs. It is the reference used by Rebrickable, BrickLink and the Pick a Brick service to name the shape regardless of colour: each shape and colour combination then gets its own element number.

Part 32123a through the years

The oldest set in our database that contains part 32123a is 2556 Ferrari Formula 1 Racing Car, released in 1997 in the Model Team theme. No set in our database uses it after 2007, the year of 7945 Fire Station. To get it today, look for older sets or buy it second-hand.

Its peak year is 2003, with 49 sets containing it. The set with the most copies is 970601 Small Pulleys (Pack of 100): 100 copies, against an average of 11.2 per set.

It is spread across several themes, led by Technic (42%), Educational and Dacta (9%) and Racers (7%). With 230 sets, it ranks no. 667 of 2,731 parts in our database and no. 3 of 4 in the Technic Bushes category.

Sets containing part 32123a, by period

PeriodSets
19972
199829
199934
200028
200123
200233
200349
200420
20058
20062
20072

Colours of part 32123a

2 colours appear in only one set: blue (8415 Dump Truck) and black (7019 Viking Fortress against the Fafnir Dragon).

Colour (element ID)SetsPiecesExample sets
Light Gray1952,268716384487191
Light Bluish Gray23215865483868420
Tan4206210642724972617283
White4203585 · 321231321843574697031
Yellow4239601310794579948435
Blue42604671128415
Black4278910127019

Where to buy part 32123a

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

Search part 32123a on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 32123a

Sets ranked by popularity that include at least one part 32123a, in any colour.

Related parts

Often found with part 32123a

Parts that share the most sets with part 32123a, based on set inventories.

More parts in the Technic Bushes category

All parts in the Technic Bushes category

Frequently asked questions

How many LEGO sets include part 32123a?

Part 32123a (Technic Bush 1/2 Smooth with Axle Hole Reduced) appears in 230 sets listed on Setopedia, from 1997 to 2007, in any colour.

Which LEGO set contains the most copies of part 32123a?

Set 970601 Small Pulleys (Pack of 100), released in 2002, contains 100 copies, the highest count in our database. On average, a set containing part 32123a has 11.2.

Which colours does LEGO part 32123a come in?

7 colours are listed for part 32123a. The most common is Light Gray, found in 195 sets.

What is the rarest colour of part 32123a?

According to our inventories, it is black, found in only 1 set (7019 Viking Fortress against the Fafnir Dragon).

Is LEGO part 32123a still used in recent sets?

Not in our database: its last set dates from 2007 (7945 Fire Station). Look for it in second-hand sets or on BrickLink.

Where can I buy LEGO part 32123a individually?

Single parts 32123a 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.

How do I identify a LEGO part number?

The mould number is embossed under the part or inside the studs. For the Technic Bush 1/2 Smooth with Axle Hole Reduced, it is number 32123a, shared by all its colours.