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.
Hair Large High BunReddish Brown ×1Dark Brown ×1Reddish Brown is redder and lighter than Dark Brown.
Plate Special 2 x 2 with Only 2 studsBlack ×12Dark Bluish Gray ×13Black is darker than Dark Bluish Gray.
Tile 2 x 6Black ×22Dark Bluish Gray ×9Black is darker than Dark Bluish Gray.
Technic Brick 5 x 5 Right Angle (1 x 4 - 1 x 4)WhitePart 32555Element 6357617×12
Minifig Heads
44 pieces
Minifig Head Claire Dearing / Ginny Weasley, Dark Orange Eyebrows, Peach Lips, Smirk / Scared PrintLight NougatPart 3626cpr2580Element 6223251×1
Minifig Head Dudley Dursley, Raised Left Eyebrow, SmirkLight NougatPart 3626cpr3243Element 6299847×1
Minifig Head Phyllis Lapin Vance, Glasses, Peach Lips, Smile with Open Teeth / Smiel with Closed Teeth PrintLight NougatPart 3626cpr3273Element 6309258×1
Minifig Head Poe Dameron / Razor Fist, Eyebrows, Stubble, White Pupils Smiling / Open Mouth Scowling PrintLight NougatPart 3626cpr1792Element 6125439×1
Minifig Head, Brown Eyebrows, Cheek Lines, Chin Dimple, Smile / Angry PrintLight NougatPart 3626cpr2587Element 6636799 or 6223932×1
Minifig Head, Eyebrows, Long Eyelashes, Peach Lips, Open Smile and Dimples / Eyebrow Raised and Closed Mouth PrintLight NougatPart 3626cpr2040Element 6162427×1
Minifig Head Ironheart, Eyelashes, Dark Red Lips, Open Mouth Smile / Annoyed PrintMedium BrownPart 3626cpr3809Element 6393400×1
Minifig Head Master Karl Mordo, Beard, Smile with Raised Left Eyebrow / Serious with Closed Mouth PrintMedium BrownPart 3626cpr3821Element 6407052×1
Minifig Head, Black Glasses, Stubbled Beard, Big Smile/Small Smile PrintMedium BrownPart 3626cpr3866Element 6404031×1
Minifig Head, Black Glasses, Thick Beard, Smile with Teeth/'O' Mouth, Raised Eyebrow PrintMedium BrownPart 3626cpr3881Element 6414557×1
Minifig Head, Smile with Teeth/Scared Open Mouth PrintMedium BrownPart 3626cpr3876Element 6415632×1
Minifig Head Ajak, Eyelashes, Dark Red Lips, Smile / Angry PrintMedium NougatPart 3626cpr3314Element 6319985×1
Minifig Head Dean Thomas / Ned Leeds, Smile, Open Mouth with Teeth / Closed Mouth PrintMedium NougatPart 3626cpr3507Element 6350863×1
Minifig Head Kelly Kapoor, Eyelashes, Dark Red Lips, Open Mouth with Teeth / Quizzical Closed Mouth PrintMedium NougatPart 3626cpr3852Element 6403646×1
Minifig Head Kingo, Thick Eyebrows, Smile, Open Mouth / Closed Mouth with Raised Right Eyebrow PrintMedium NougatPart 3626cpr3346Element 6330631×1
Minifig Head MJ / Amber Grant, Peach Lips, Raised Black Eyebrow / Slight SmileMedium NougatPart 3626cpr2956Element 6270592×1
Technic Ball JointLight Bluish GrayPart 32474Element 6070731 or 4585707×4
Technic Ball JointRedPart 32474Element 4290714 or 4178640×5
Ball 19mmWhitePart 52629Element 6261647×2
Bars, Ladders and Fences
10 pieces
Bar 2L with Stop in CenterWhitePart 78258Element 63576801 spare in the box×6
Bar 3LWhitePart 87994Element 6552205 or 64288031 spare in the box×4
Flags, Banners and Signs
10 pieces
Flag 4 x 1 Wavy [First Wave Right]BluePart 4495bElement 6268955 or 6215573×3
Flag 2 x 2 Trapezoid with Flared Area between ClipsRedPart 80324Element 6365503×4
Flag 4 x 1 Wavy [First Wave Right]RedPart 4495bElement 6268946 or 449521×3
Minifig Neckwear
10 pieces
Minifig Neckwear Backpack with Horizontal Pin HoleBlackPart 15406Element 6293822 or 6078731×10
Technic Connectors
10 pieces
Technic Axle Connector with Axle Hole [Reinforced]BlackPart 42135Element 6331716×10
Bricks Round and Cones
8 pieces
Brick Round 2 x 2 with Axle HoleDark AzurePart 3941Element 6229071×2
Brick Round 2 x 2 with Axle HoleRedPart 3941Element 614321 or 394121×2
Brick Round, Curved 2 x 2 x 1 1/3, CornerWhitePart 67810Element 6299937×4
Tiles Special
5 pieces
Tile Special Round 2 x 2 with HoleLight Bluish GrayPart 15535Element 6179186×4
Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]Pearl GoldPart 99563Element 6207933 or 4651407×1
Bricks Wedged
4 pieces
Brick Wedged, Curved 2 x 1 with Stud Notch LeftBlackPart 29120Element 6181720×2
Brick Wedged, Curved 2 x 1 with Stud Notch RightBlackPart 29119Element 6181713×2
Wheels and Tyres
4 pieces
Tyre 14 x 4 Smooth Small Single [New Style]BlackPart 59895Element 4516843 or 45077001 spare in the box×4
Minifig Accessories
1 piece
Equipment Trophy Cup SmallPearl GoldPart 10172Element 6181575 or 6100303×1
Tools
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
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.