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 Beam 1 x 11 ThickBlack ×10Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Large Figure Torso Cover, Armour, Toa Inika (Type 1)LimePart 53546Element 4292566×1
Technic Axle Connector 2 x 3 with Ball Socket, Closed Sides, Squared EndsLimePart 60176Element 4519247×5
Technic Axle and Pin Connector 2 x 7 with Two Ball Joint Sockets [Squared Ends]LimePart 61054Element 4519248×4
White
10 pieces
Cone 2 x 2 x 2, Open StudWhitePart 3942cElement 6044601 or 6022158×3
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)WhitePart 4032aElement 6601914 or 403201×1
Rubber Belt Small [15mm ID] [Round Cross Section]WhitePart 85543Element 6699001 or 4580665×6
Trans-Neon Green
7 pieces
Large Figure Head Connector Block Eye/Brain Stalk - ShortTrans-Neon GreenPart 57536Element 4505191×1
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]Trans-Neon GreenPart 41669Element 4163577×6
Trans-Medium Blue
1 piece
Large Figure Mask Heads-Up DisplayTrans-Medium BluePart 61813Element 4525724×1
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.