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.
355 pieces in 168 part and color combinations, plus 4 minifigures.
LEGO counts 355 pieces. This inventory comes from a separate parts catalog and lists 371, including the 16 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.
Plate Special 8-Sided Crystal/Gem 1 x 1 x 2/3Opal Trans-ClearPart 65092Element 6514349 or 62873091 spare in the box×1
Pearl Titanium
1 piece
Minifig Pot Small with Handle HoldersPearl TitaniumPart 98374Element 6363146 or 6153593×1
Sand Green
1 piece
Cone 1 x 1 [Top Groove]Sand GreenPart 59900Element 6134280 or 4520959×1
Tan
1 piece
Food Egg with 1.5mm Hole [Plain]TanPart 24946Element 6264077×1
Trans-Dark Pink
1 piece
Rock 1 x 1 Jewel / Gem 24 FacetTrans-Dark PinkPart 30153Element 6513975 or 62477961 spare in the box×1
Trans-Light Blue
1 piece
Rock 1 x 1 Crystal 4 PointTrans-Light BluePart 11127Element 6248885 or 6019570×1
Trans-Yellow
1 piece
Brick Round 1 x 1 Open StudTrans-YellowPart 3062bElement 6514236 or 6238674×1
Yellow
1 piece
Equipment Medical Syringe with 2 HolesYellowPart 53020Element 63619531 spare in the box×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 76185-1[No Color/Any Color]Part 80475Element 6363263×1
Minifigures
4 figures
Spider-Man, Red, Black, and Gold OutfitMinifigure, checked as a whole figure×1
Wong, Black HairMinifigure, checked as a whole figure×1
Doctor Strange, Plastic CapeMinifigure, checked as a whole figure×1
MJ, Dark Bluish Gray Plaid ShirtMinifigure, 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.