Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece
and leave with the element ID LEGO asks for, or a link to buy the part.
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
Look-alike colors in this set
These parts appear in this set in two colors that are easy to confuse. If you are one short in one color,
check whether it went in where the other color belongs. Each color has its own element ID in the parts list
at the back of the instructions.
Technic Axle Connector 2 x 3 with Ball Socket, Open SidesBlack ×8Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Technic Axle and Pin Connector 2 x 7 with Two Ball Joint SocketsBlack ×2Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Technic Axle and Pin Connector PerpendicularBlack ×10Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Technic Axle Connector 2 x 3 with Ball Socket, Open SidesRedPart 32174Element 4119331×2
Technic Axle Connector with Axle HoleRedPart 32039Element 4118897×2
Technic Axle and Pin Connector Angled #1RedPart 32013Element 6332580 or 4254606×4
Technic Axle and Pin Connector Angled #5 - 112.5°RedPart 32015Element 6271348 or 4227544×4
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]RedPart 32054Element 4140806 or 4125198×1
Blue
21 pieces
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×21
Lime
19 pieces
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, SmallLimePart 53451Element 6337299 or 4579250×16
Large Figure Chest Cover, Barraki Carapar Marbled Dark Green PatternLimePart 59490pat0002Element 4513245×3
Dark Green
16 pieces
Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End SectionDark GreenPart 40379Element 6512537 or 6114669×4
Large Figure Foot, Barraki MantaxDark GreenPart 57569Element 4513247×2
Large Figure Foot, Long, Pointed Barraki PridakDark GreenPart 57561Element 4513249×2
Large Figure Head Toa Hordika VakamaDark GreenPart 50931Element 4242310×2
Large Figure Skeletal, Limb, Plated with 2 Ball Joints (Piraka)Dark GreenPart 53574Element 4284580×2
Large Figure Skeletal, Limb, with 2 Ball Joints, and 3 Holes (Rahkshi)Dark GreenPart 45749Element 4543194 or 4294577×2
Technic Axle and Pin Connector 2 x 5 with Two Ball Joint SocketsDark GreenPart 47296Element 4227557×2
Dark Red
7 pieces
Large Figure Foot, Claws, Toa InikaDark RedPart 53542Element 4281237×2
Large Figure Mask Huna (Toa Metru)Dark RedPart 47308Element 4286359 or 4218956×1
Large Figure Skeletal, Limb, Angular 90°, 4 x 4 x 2 with 2 Ball Joints, and Axle HoleDark RedPart 41670Element 4289876 or 4275566×2
Large Figure Skeletal, Limb, Angular with Ball Joint, and Axle HoleDark RedPart 32476Element 4291513 or 4234440×2
Trans-Medium Blue
6 pieces
Technic Axle Connector 2 x 3 with Ball Socket, Open SidesTrans-Medium BluePart 32174Element 4294865×5
Technic Axle and Pin Connector 2 x 7 with Two Ball Joint SocketsTrans-Medium BluePart 50898Element 4294863×1
Dark Blue
5 pieces
Large Figure Foot, Toa Inika EllipticalDark BluePart 53549Element 4504551×2
Large Figure Mask Ruru (Toa Metru)Dark BluePart 47302Element 4498693×1
Large Figure Skeletal, Limb, Angular 90°, 4 x 4 x 2 with 2 Ball Joints, and Axle HoleDark BluePart 41670Element 4299761×2
Pearl Dark Gray
2 pieces
Large Figure Weapon 5 x 5 Shield with Wrench ToothedPearl Dark GrayPart 44936Element 4506737×2
Trans-Green
2 pieces
Large Figure Head Barraki Ehlek with Marbled Lime PatternTrans-GreenPart 57553pat0001Element 4498065×2
Trans-Neon Green
2 pieces
Large Figure Head Connector Block Eye/Brain Stalk - ShortTrans-Neon GreenPart 57536Element 4505191×2
Trans-Neon Orange
2 pieces
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]Trans-Neon OrangePart 41669Element 6111281 or 4163574×2
Trans-Orange
2 pieces
Projectile, Large Figure Weapon, Ammo, SquidTrans-OrangePart 57555Element 4511873 or 4500092×2
Trans-Red
2 pieces
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]Trans-RedPart 41669Element 4163567×2
Tick each piece as you find it, or mark it missing.
When a piece really is missing
Ask LEGO
LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for
the set number and each piece's element ID, the number printed beside the piece in the parts list at the back
of the instructions. This checker lists both.
Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from
older or second-hand sets.
Keep a record
Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick
pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.