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.
1,561 pieces in 438 part and color combinations, plus 3 minifigures.
LEGO counts 1,571 pieces. This inventory comes from a separate parts catalog and lists 1,574, including the 13 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.
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.
Plate 1 x 2Red ×31Trans-Red ×4Trans-Red is see-through: hold the piece up to a light.
Plate 1 x 1White ×8Trans-Clear ×1Trans-Clear is see-through: hold the piece up to a light.
Equipment Wand [Individual]Reddish Brown ×2Dark Brown ×2Reddish Brown is redder and lighter than Dark Brown.
Tile 1 x 1 with GrooveBlack ×3Dark Blue ×12Black is yellower and darker than Dark Blue.
Brick Special 1 x 2 with 2 Studs on 1 SideBlack ×3Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Minifig Trophy StatuetteBlack ×4Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
2 more look-alike pairs
Plate 1 x 6Black ×8Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 2 x 6Black ×2Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Minifig Trophy StatuetteSand GreenPart 90398Element 6335936 or 6138781×1
Panel 1 x 2 x 1 [Rounded Corners]Sand GreenPart 4865bElement 6584957×2
Plate 1 x 2Sand GreenPart 3023Element 4655080 or 4642428×2
Dark Brown
4 pieces
Dome 1 x 1 x 2/3Dark BrownPart 6908Element 6563482×1
Equipment Wand [Individual]Dark BrownPart 36752aAlso in Reddish Brown×2
Glass for Window 1 x 2 x 2 FlatDark BrownPart 60601Element 6492338×1
Dark Green
4 pieces
Plant, Flower, Plate Round 1 x 1 with 5 PetalsDark GreenPart 24866Element 6446790×2
Plant, Grass Stem with Bar Hole [3.2mm]Dark GreenPart 15279Element 6396754×2
Bright Pink
3 pieces
Brick 1 x 2Bright PinkPart 3004Element 4517993 or 4245296×2
Tile 1 x 1 HeartBright PinkPart 39739Element 6495136 or 6275466×1
Trans-Orange
3 pieces
Flame Blaster with HandleTrans-OrangePart 7910Element 6578673×1
Wave / Flame Small with PinTrans-OrangePart 37775Element 6514274 or 6357747×2
Blue Violet
2 pieces
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)Blue VioletPart 18674Element 6593602×1
Tile Special Pentagon 6 x 6 x 2/3 with Chocolate Frog Card, Dumbledore PrintBlue VioletPart 7894pr0001Element 6590436×1
[No Color/Any Color]
2 pieces
Sticker Sheet 1 for Set 76466-1[No Color/Any Color]Part 10115119Element 6578996×1
Sticker Sheet 2 for Set 76466-1[No Color/Any Color]Part 10116111Element 6590415×1
Blue
1 piece
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×1
Orange
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Trans-Clear
1 piece
Plate 1 x 1Trans-ClearPart 3024Element 6513962 or 6252041Also in White×1
Minifigures
3 figures
Ron Weasley, Dark Bluish Gray Shirt, Short Sand Blue LegsMinifigure, checked as a whole figure×1
Hermione Granger, Dark Green Sweater, Short Legs, SkirtMinifigure, checked as a whole figure×1
Harry Potter, Red Sweater with Holes, Short Dark Tan LegsMinifigure, 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.