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.
Large Figure Head Connector Block Eye/Brain Stalk - ShortTrans-Neon GreenPart 57536Element 4505191×1
Large Figure Foot, Toa HordikaWhitePart 50919Element 4531177×2
Large Figure Foot, Toa Inika EllipticalWhitePart 53549Element 4292521×1
Large Figure Skeletal, Limb, with 2 Ball Joints (Toa Inika)WhitePart 53548Element 4292537×2
Large Figure Skeletal, Limb, with Ball Joint, and Gear with Axle Hole (Toa Hordika)WhitePart 50921Element 4531190 or 4290048×2
Large Figure Skeletal, Torso, Upper, with 2 Ball Joints (Toa Inika)WhitePart 53545Element 4506532 or 4292584×1
Large Figure Weapon Blade, Mahri MatoranWhitePart 57563Element 4498992×6
Large Figure Weapon, Claw, Triple, Small with Axle HoleWhitePart 61806Element 4531176×2
Technic Beams Special
14 pieces
Technic Beam 1 x 2 with Ball Joint AngledDark Bluish GrayPart 50923Element 4503381 or 4289258×6
Technic Beam 1 x 7 with FanWhitePart 32177Element 4531187 or 4119338×8
Technic Special
13 pieces
Technic Ball Joint with Through Axle HoleBlackPart 53585Element 4286267×7
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]WhitePart 41669Element 4173941×6
Technic Bushes
8 pieces
Technic Bush 1/2 Smooth with Axle Hole Semi-ReducedLight Bluish GrayPart 32123bElement 6271165 or 42115731 spare in the box×8
Projectiles / Launchers
5 pieces
Launcher, Large Figure Weapon Cannon, Midak Skyblaster with Black Housing [Complete Assembly]Pearl Light GrayPart 62233Element 4521177×1
Projectile, Large Figure Weapon, Zamor Sphere / BallPearl Light GrayPart 54821Element 4494056 or 4291759×4
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.