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LEGO part 2850a: Technic Engine Cylinder with Side Slots

Technic Steering, Suspension and Engine4 colours60 sets

LEGO part LEGO part 2850a: Technic Engine Cylinder with Side Slots

Specifications

Reference2850a
CategoryTechnic Steering, Suspension and Engine
MaterialABS plastic
Colours4
Sets60
Listed pieces303
First appearance1995
Latest appearance2015
Most common colourLight Bluish Gray
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 2850a, Technic Engine Cylinder with Side Slots, belongs to the Technic Steering, Suspension and Engine category. It exists in 4 colours and appears in 60 sets of our database, from 1995 to 2015, for a total of 303 listed pieces. Its most common colour is Light Bluish Gray.

Number 2850a 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 2850a through the years

The oldest set in our database that contains part 2850a is 8440 Formula Flash, released in 1995 in the Technic theme. No set in our database uses it after 2015, the year of 42040 Fire Plane. To get it today, look for older sets or buy it second-hand.

Its peak year is 2009, with 5 sets containing it. The set with the most copies is 8457 Power Puller: 20 copies, against an average of 5 per set.

The part is closely tied to the Technic theme: 88% of the sets that contain it belong to it. With 60 sets, it ranks no. 1,501 of 2,731 parts in our database and no. 10 of 32 in the Technic Steering, Suspension and Engine category.

Sets containing part 2850a, by period

PeriodSets
1995-199918
2000-200933
2010-20159

Colours of part 2850a

Its rarest colour, dark bluish gray, appears only in set 8435 4WD. One of its colours is transparent: trans-clear.

Colour (element ID)SetsPiecesExample sets
Light Bluish Gray271434200082588297
Trans-Clear410961023124844883868455
Light Gray930844084228459
Dark Bluish Gray32061199 · 4238823168435

Where to buy part 2850a

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

Search part 2850a on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 2850a

Sets ranked by popularity that include at least one part 2850a, in any colour.

Related parts

Often found with part 2850a

Parts that share the most sets with part 2850a, based on set inventories.

More parts in the Technic Steering, Suspension and Engine category

All parts in the Technic Steering, Suspension and Engine category

Frequently asked questions

How many LEGO sets include part 2850a?

Part 2850a (Technic Engine Cylinder with Side Slots) appears in 60 sets listed on Setopedia, from 1995 to 2015, in any colour.

Which LEGO set contains the most copies of part 2850a?

Set 8457 Power Puller, released in 2000, contains 20 copies, the highest count in our database. On average, a set containing part 2850a has 5.

Which colours does LEGO part 2850a come in?

4 colours are listed for part 2850a. The most common is Light Bluish Gray, found in 27 sets.

What is the rarest colour of part 2850a?

According to our inventories, it is dark bluish gray, found in only 1 set (8435 4WD).

Is LEGO part 2850a still used in recent sets?

Not in our database: its last set dates from 2015 (42040 Fire Plane). Look for it in second-hand sets or on BrickLink.

Where can I buy LEGO part 2850a individually?

Single parts 2850a 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 Engine Cylinder with Side Slots, it is number 2850a, shared by all its colours.