Setobrick

LEGO part 3755a: Brick 1 x 3 x 5 with Side Supports

Bricks5 colours20 sets

LEGO part LEGO part 3755a: Brick 1 x 3 x 5 with Side Supports

Specifications

Reference3755a
CategoryBricks
MaterialABS plastic
Colours5
Sets20
Listed pieces54
First appearance1996
Latest appearance2007
Element (White)375501
Most common colourWhite
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 3755a, Brick 1 x 3 x 5 with Side Supports, belongs to the Bricks category. It exists in 5 colours and appears in 20 sets of our database, from 1996 to 2007, for a total of 54 listed pieces. Its most common colour is White.

Number 3755a 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 375501.

Part 3755a through the years

The oldest set in our database that contains part 3755a is 6765 Gold City Junction, released in 1996 in the Western theme. No set in our database uses it after 2007, the year of 5378 Hogwarts Castle. To get it today, look for older sets or buy it second-hand.

Its peak year is 1996, with 5 sets containing it. The set with the most copies is 7469 Mission to Mars: 5 copies, against an average of 2.7 per set.

It is spread across several themes, led by Town (20%), Educational and Dacta (20%) and Train (10%). With 20 sets, it ranks no. 2,712 of 2,731 parts in our database and no. 51 of 52 in the Bricks category.

Sets containing part 3755a, by period

PeriodSets
19965
19970
19981
19991
20000
20011
20022
20032
20044
20050
20061
20073

Colours of part 3755a

2 colours appear in only one set: dark gray (7045 Hovercraft Hideout) and red (2150 Train Station).

Colour (element ID)SetsPiecesExample sets
White37550111316765456510159
Light Bluish Gray4211879514878153788144
Light Gray2674694518
Dark Gray4215737127045
Red112150

Where to buy part 3755a

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

Frequently asked questions

How many LEGO sets include part 3755a?

Part 3755a (Brick 1 x 3 x 5 with Side Supports) appears in 20 sets listed on Setopedia, from 1996 to 2007, in any colour.

Which LEGO set contains the most copies of part 3755a?

Set 7469 Mission to Mars, released in 2003, contains 5 copies, the highest count in our database. On average, a set containing part 3755a has 2.7.

Which colours does LEGO part 3755a come in?

5 colours are listed for part 3755a. The most common is White, found in 11 sets.

What is the rarest colour of part 3755a?

According to our inventories, it is red, found in only 1 set (2150 Train Station).

What is the element ID of part 3755a in white?

In white, part 3755a has element ID 375501. Number 3755a is the mould number, the same for every colour.

Is LEGO part 3755a still used in recent sets?

Not in our database: its last set dates from 2007 (5378 Hogwarts Castle). Look for it in second-hand sets or on BrickLink.

Where can I buy LEGO part 3755a individually?

Single parts 3755a 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.