Setobrick

LEGO part 3659: Brick Arch 1 x 4

Bricks Curved35 colours967 sets

LEGO part LEGO part 3659: Brick Arch 1 x 4

Specifications

Reference3659
CategoryBricks Curved
MaterialABS plastic
Colours35
Sets967
Listed pieces3,627
First appearance1995
Latest appearance2026
Element (White)6550145 · 365901
Most common colourWhite
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 3659, Brick Arch 1 x 4, belongs to the Bricks Curved category. It exists in 35 colours and appears in 967 sets of our database, from 1995 to 2026, for a total of 3,627 listed pieces. Its most common colour is White.

Number 3659 identifies the shape and is moulded under the part. Each colour also has its own element ID, the one Pick a Brick uses: in white, it is 6550145.

Part 3659 through the years

The oldest set in our database that contains part 3659 is 6090 Royal Knight's Castle, released in 1995 in the Castle theme. It is still in use: the most recent set featuring it, 11377 The Lord of the Rings: Minas Tirith, dates from 2026.

Its peak year is 2025, with 101 sets containing it. The set with the most copies is 10276 Colosseum: 236 copies, against an average of 3.8 per set.

It is spread across several themes, led by Friends (8%), Disney (8%) and Harry Potter (7%). With 967 sets, it ranks no. 171 of 2,731 parts in our database and no. 10 of 96 in the Bricks Curved category.

Sets containing part 3659, by period

PeriodSets
1995-199945
2000-2009123
2010-2019336
2020-2026463

Colours of part 3659

5 colours appear in only one set: bright green (5861 Fairy Island), dark azure (72537 Derpy Tiger and Sussie Bird), light yellow (5827 Royal Coach), pink (4518 Creator Set) and sand green (11377 The Lord of the Rings: Minas Tirith).

Colour (element ID)SetsPiecesExample sets
White6550145 · 365901187472213357104071767
Light Bluish Gray4211435184871103057638931120
Tan4550323 · 4542424130633710437640276389
Black365926121295311097639110294
Dark Bluish Gray4210999111235103057638910316
Reddish Brown6177697 · 608871397240103051031631109
Red36592169160106987176775323
Dark Brown46237753482106962133510333
Dark Tan6310832 · 45962182993102971027543222
Yellow6310246 · 42801262548110214317910306
Light Gray3659022356609047094708
Medium Nougat646727321344263143302910062
Dark Orange6441766 · 62128971965426314144511004
Dark Turquoise62538761629432224170041689
Bright Light Orange60716071530714087136911016
Dark Pink4244613144441068556010703
Dark Gray36592714371012360905988
Dark Red6146854 · 45415821237102946025870425
Light Nougat65226221034427044329743298
Dark Purple6112854 · 4656482821106974133241180
Bright Light Yellow6250076 · 4240667814409073117511038
Bright Pink6175307619110044116210704
Blue6320045 · 4239050586289629043275
Dark Blue6464198411910059756896518396
Orange415836348441158585872
Medium Blue4544166 · 4270373381019360534762
Lavender65461812154326343274
Lime45682592670528191
Medium Dark Pink3659222458765875
Green6513734 · 4239054244087175684
Bright Green4184977145861
Dark Azure66366251472537
Light Yellow4129862125827
Pink4218195124518
Sand Green66087931211377

Where to buy part 3659

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

Search part 3659 on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 3659

Sets ranked by popularity that include at least one part 3659, in any colour.

Often found with part 3659

Parts that share the most sets with part 3659, based on set inventories.

Minifigures using part 3659

Part 3659 is used in one catalogued minifigure variant:

More parts in the Bricks Curved category

All parts in the Bricks Curved category

Frequently asked questions

How many LEGO sets include part 3659?

Part 3659 (Brick Arch 1 x 4) appears in 967 sets listed on Setopedia, from 1995 to 2026, in any colour.

Which LEGO set contains the most copies of part 3659?

Set 10276 Colosseum, released in 2020, contains 236 copies, the highest count in our database. On average, a set containing part 3659 has 3.8.

Which colours does LEGO part 3659 come in?

35 colours are listed for part 3659. The most common is White, found in 187 sets.

What is the rarest colour of part 3659?

According to our inventories, it is light yellow, found in only 1 set (5827 Royal Coach).

What is the element ID of part 3659 in white?

In white, part 3659 has element ID 6550145 or 365901. Number 3659 is the mould number, the same for every colour.

Is LEGO part 3659 still used in recent sets?

Yes: it appears in sets released in 2026, such as 11377 The Lord of the Rings: Minas Tirith.

Where can I buy LEGO part 3659 individually?

Single parts 3659 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.