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.
775 pieces in 215 part and color combinations, plus 1 minifigure.
The official piece count includes the 4 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.
Windscreen 2 x 4 x 2Trans-Light BluePart 3823Element 6581802 or 6253682×2
String, Bands and Reels
1 piece
Technic Rubber Belt Medium [24mm ID] [Round Cross Section]RedPart 85544Element 4544145 or 4544143×1
Supports, Girders and Cranes
1 piece
Support Round 1 x 1 x 6 Solid PillarDark Bluish GrayPart 43888Element 4180811×1
Technic Beams Special
1 piece
Technic Beam 3 x 0.5 Liftarm with Boss and Pin Semi-ReducedLight Bluish GrayPart 33299bElement 4563045×1
Tiles Round and Curved
1 piece
Tile Round 1 x 1WhitePart 98138Element 6564903 or 6284572×1
Minifigures
1 figure
Woman, Pink Top with Necklace, Dark Purple Legs, Light Yellow HairMinifigure, 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.