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.
342 pieces in 115 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.
Animal, Cat, Sitting with Yellow Eyes, Mean Stare PrintBlackPart 11602pr0012Element 6592959×1
Hinges, Arms and Turntables
1 piece
Hinge Brick 1 x 2 Locking with 2 Fingers Vertical End, 7 teethLight Bluish GrayPart 54671Element 6267142×1
Stickers
1 piece
Sticker Sheet for Set 43288-1[No Color/Any Color]Part 10116253Element 6592966×1
Technic Beams
1 piece
Technic Beam 1 x 3 ThickReddish BrownPart 32523Element 6121726 or 4211330×1
Minifigures
1 figure
SallyMinifigure, 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.