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.
946 pieces in 267 part and color combinations, plus 5 minifigures.
LEGO counts 990 pieces. This inventory comes from a separate parts catalog and lists 998, including the 52 parts inside the minifigures; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.
Before you call it missing
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
Antenna 1 x 4 with Flat TopTrans-ClearPart 3957bElement 6514014 or 6166111×1
Bar Curved with Axle End and 1 x 1 Round PlateTrans-ClearPart 4042Element 6510119 or 6444527×1
Brick Curved 2 x 2 with Lip, No StudsTrans-ClearPart 30602Element 6507871 or 6166113×1
Dish 3 x 3 Inverted [Radar]Trans-ClearPart 43898Element 6507917 or 6244730×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 80053-1[No Color/Any Color]Part 10105742Element 6465483×1
Minifigures
5 figures
Monkie Kid, Bright Light Orange Jacket, WinkingMinifigure, checked as a whole figure×1
Mei, White Armor, Pearl Gold Should GuardMinifigure, checked as a whole figure×1
Robot (Blue)Minifigure, checked as a whole figure×1
Robot (Yellow)Minifigure, checked as a whole figure×1
Robot (Red)Minifigure, checked as a whole figure×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.