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LEGO part 3705: Technic Axle 4

Technic Axles6 colours1,860 sets

LEGO part LEGO part 3705: Technic Axle 4

Specifications

Reference3705
CategoryTechnic Axles
MaterialABS plastic
Colours6
Sets1,860
Listed pieces7,833
First appearance1995
Latest appearance2026
Element (Black)370526
Most common colourBlack
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 3705, Technic Axle 4, belongs to the Technic Axles category. It exists in 6 colours and appears in 1,860 sets of our database, from 1995 to 2026, for a total of 7,833 listed pieces. Its most common colour is Black.

Number 3705 identifies the shape and is moulded under the part. Each colour also has its own element ID, the one Pick a Brick uses: in black, it is 370526.

Part 3705 through the years

The oldest set in our database that contains part 3705 is 6090 Royal Knight's Castle, released in 1995 in the Castle theme. It is still in use: the most recent set featuring it, 72153 Venusaur, Charizard and Blastoise, dates from 2026.

Its peak year is 2026, with 130 sets containing it. The set with the most copies is 5003129 4M Cross Axles: 50 copies, against an average of 4.2 per set.

It is spread across several themes, led by Technic (20%), Star Wars (10%) and Ninjago (6%). With 1,860 sets, it ranks no. 77 of 2,731 parts in our database and no. 3 of 22 in the Technic Axles category.

Sets containing part 3705, by period

PeriodSets
1995-1999125
2000-2009458
2010-2019584
2020-2026693

Colours of part 3705

2 colours appear in only one set: brown (3451 Sopwith Camel) and light gray (4726 Quidditch Practice).

Colour (element ID)SetsPiecesExample sets
Black3705261,4746,418103007533742128
Red6129995 · 42657974811,356103007533710305
White4143340 · 370501630848087138009
Green4163983 · 4107755318716384798713
Brown41623901103451
Light Gray4180062114726

Where to buy part 3705

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

Search part 3705 on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 3705

Sets ranked by popularity that include at least one part 3705, in any colour.

Often found with part 3705

Parts that share the most sets with part 3705, based on set inventories.

Minifigures using part 3705

Part 3705 is used in 2 catalogued minifigure variants. Characters:

More parts in the Technic Axles category

All parts in the Technic Axles category

Frequently asked questions

How many LEGO sets include part 3705?

Part 3705 (Technic Axle 4) appears in 1,860 sets listed on Setopedia, from 1995 to 2026, in any colour.

Which LEGO set contains the most copies of part 3705?

Set 5003129 4M Cross Axles, released in 2014, contains 50 copies, the highest count in our database. On average, a set containing part 3705 has 4.2.

Which colours does LEGO part 3705 come in?

6 colours are listed for part 3705. The most common is Black, found in 1,474 sets.

What is the rarest colour of part 3705?

According to our inventories, it is light gray, found in only 1 set (4726 Quidditch Practice).

What is the element ID of part 3705 in black?

In black, part 3705 has element ID 370526. Number 3705 is the mould number, the same for every colour.

Is LEGO part 3705 still used in recent sets?

Yes: it appears in sets released in 2026, such as 72153 Venusaur, Charizard and Blastoise.

Where can I buy LEGO part 3705 individually?

Single parts 3705 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.