Setobrick

LEGO part 4221: Arm Grab Jaw

Hinges, Arms and Turntables1 colours24 sets

LEGO part LEGO part 4221: Arm Grab Jaw

Specifications

Reference4221
CategoryHinges, Arms and Turntables
MaterialABS plastic
Colours1
Sets24
Listed pieces78
First appearance1995
Latest appearance2003
Element (Black)422126
Most common colourBlack
SetopediaData: Rebrickable
Spec sheet updated on 2026-09-29

LEGO part 4221, Arm Grab Jaw, belongs to the Hinges, Arms and Turntables category. It exists in 1 colours and appears in 24 sets of our database, from 1995 to 2003, for a total of 78 listed pieces. Its most common colour is Black.

Number 4221 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 422126.

Part 4221 through the years

The oldest set in our database that contains part 4221 is 6195 Neptune Discovery Lab, released in 1995 in the Aquazone theme. No set in our database uses it after 2003, the year of 9794 ROBOLAB Team Challenge Set Version 2.5 [USB]. To get it today, look for older sets or buy it second-hand.

Its peak year is 1998, with 10 sets containing it. The set with the most copies is 6160 Sea Scorpion: 6 copies, against an average of 3.2 per set.

It is spread across several themes, led by Aquazone (54%), Educational and Dacta (17%) and Mindstorms (12%). With 24 sets, it ranks no. 2,451 of 2,731 parts in our database and no. 85 of 92 in the Hinges, Arms and Turntables category.

Sets containing part 4221, by period

PeriodSets
19954
19964
19971
199810
19992
20000
20011
20021
20031

Colours of part 4221

Part 4221 exists in a single colour: black.

Colour (element ID)SetsPiecesExample sets
Black4221262478848061956175

Where to buy part 4221

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

Search part 4221 on AmazonPick a Brick (lego.com)BrickLink entryRebrickable entry

Sets that include part 4221

Sets ranked by popularity that include at least one part 4221, in any colour.

Often found with part 4221

Parts that share the most sets with part 4221, based on set inventories.

More parts in the Hinges, Arms and Turntables category

All parts in the Hinges, Arms and Turntables category

Frequently asked questions

How many LEGO sets include part 4221?

Part 4221 (Arm Grab Jaw) appears in 24 sets listed on Setopedia, from 1995 to 2003, in any colour.

Which LEGO set contains the most copies of part 4221?

Set 6160 Sea Scorpion, released in 1998, contains 6 copies, the highest count in our database. On average, a set containing part 4221 has 3.2.

Which colours does LEGO part 4221 come in?

1 colours are listed for part 4221. The most common is Black, found in 24 sets.

What is the element ID of part 4221 in black?

In black, part 4221 has element ID 422126. Number 4221 is the mould number, the same for every colour.

Is LEGO part 4221 still used in recent sets?

Not in our database: its last set dates from 2003 (9794 ROBOLAB Team Challenge Set Version 2.5 [USB]). Look for it in second-hand sets or on BrickLink.

Where can I buy LEGO part 4221 individually?

Single parts 4221 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.