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.
251 pieces in 72 part and color combinations, plus 3 minifigures.
The official piece count includes the 13 parts inside the set's minifigures, which this inventory lists separately. 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 Round 1 x 1 with Solid StudReddish BrownPart 6141Element 42165811 spare in the box×6
Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Solid Anti-stud]Reddish BrownPart 99206Element 6146301×4
Technic Axle 3 with StopReddish BrownPart 24316Element 6135494×4
Light Bluish Gray
12 pieces
Plate Special 1 x 2 5.9mm Centre Side Towball SocketLight Bluish GrayPart 14704Element 6414561 or 6338165×1
Plate Special 1 x 2 5.9mm Towball SocketLight Bluish GrayPart 14418Element 6414556 or 6338163×4
Plate Special 2 x 2 with Only 2 studsLight Bluish GrayPart 33909Element 6212077×2
Technic Axle TowballLight Bluish GrayPart 2736Element 6443149 or 4211375×1
Technic Bush 1/2 Smooth with Axle Hole Semi-ReducedLight Bluish GrayPart 32123bElement 6271165 or 42115731 spare in the box×4
Dark Bluish Gray
7 pieces
Bracket 1 x 2 - 1 x 2 InvertedDark Bluish GrayPart 99780Element 6000606×1
Bracket 3 x 2 x 1 1/3 with Bottom Stud HolderDark Bluish GrayPart 73562Element 6395363×2
Brick Special 1 x 2 x 1 2/3 with 8 Studs on 3 SidesDark Bluish GrayPart 67329Element 6314192×2
Plate Special 1 x 2 with Clips Horizontal [Open O Clips]Dark Bluish GrayPart 60470bElement 6350292×2
White
6 pieces
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 SideWhitePart 22885Element 6603759 or 6218823×3
Plate 2 x 2WhitePart 3022Element 6552099 or 6548260×1
Plate Round 4 x 4 with Pin HoleWhitePart 60474Element 6564904 or 4515347×1
Tile Round 1 x 1 with Rainbow Stripes PrintWhitePart 98138pr9984Element 63035141 spare in the box×1
Blue
5 pieces
Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope EndBluePart 47457Element 4496366×2
Brick Special 1 x 1 x 1 2/3 with Studs on 1 SideBluePart 32952Element 6290531×2
Plate 1 x 4BluePart 3710Element 371023×1
Red
5 pieces
Brick Round 1 x 1 Open StudRedPart 3062bElement 306221×2
Brick Special 1 x 2 with 2 Studs on 1 SideRedPart 11211Element 6019155×2
Tile Special Round 2 x 2 with HoleRedPart 15535Element 6102138×1
Sand Green
4 pieces
Plate 2 x 2 CornerSand GreenPart 2420Element 6282619 or 4633697×2
Plate Special 1 x 1 Rounded with HandleSand GreenPart 26047Element 6278550×2
Tan
4 pieces
Brick Special 1 x 2 Palisade [aka Log]TanPart 30136Element 4218749 or 4114053×3
Brick Special 1 x 4 with 4 Studs on One SideTanPart 30414Element 4201062 or 4177990×1
Trans-Clear
4 pieces
Plate Special Round 1 x 1 with Hollow Stud and Bar on Underside - Long SpaceTrans-ClearPart 79194Element 6510217 or 63592311 spare in the box×4
Dark Turquoise
3 pieces
Plate 1 x 2Dark TurquoisePart 3023Element 6213777 or 4218493×3
Trans-Orange
3 pieces
Dish 2 x 2 Inverted [Radar]Trans-OrangePart 4740Element 6580380 or 6245310×2
Plate Round 2 x 2 with Rounded Bottom with Bloodshot Eye and Black Pupil PrintTrans-OrangePart 2654pr0023Element 6376666×1
Trans-Dark Pink
2 pieces
Dish 2 x 2 Inverted [Radar]Trans-Dark PinkPart 4740Element 6580376 or 6245302×2
Dark Pink
1 piece
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 SideDark PinkPart 22885Element 6132426×1
Medium Azure
1 piece
Brick 1 x 4Medium AzurePart 3010Element 6603319 or 6036238×1
Trans-Yellow
1 piece
Brick Round 4 x 4 Dome Top with Round 2 x 2 Recessed, 4 StudsTrans-YellowPart 79850Element 6503231 or 6386220×1
Yellow
1 piece
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 SideYellowPart 22885Element 6313592×1
Minifigures
3 figures
Wong, Dark Purple OutfitMinifigure, checked as a whole figure×1
America ChavezMinifigure, checked as a whole figure×1
Doctor Strange, Plastic Cape, High MedallionMinifigure, 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.