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.
LEGO counts 168 pieces. This inventory comes from a separate parts catalog and lists 185; 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.
Belville / Scala, Equipment Tray with Handles 5 x 4 x 1Chrome SilverPart 6944Element 4114754×1
Dish 2 x 2 Inverted [Radar]Chrome SilverPart 4740Element 4114758×1
Light Yellow
2 pieces
Scala, Building, Wall, Vertical Grooved 40 x 2 x 22 2/3 with Door Opening, Plain White Stripe on Medium Orange PrintLight YellowPart 6890c01pr0002Element 4120348×1
Scala, Building, Wall, Vertical Grooved 40 x 2 x 22 2/3 with Window and Door Openings, with Light Orange and White PrintLight YellowPart 6891c01pr0002Element 4120362 or 4120327×1
Blue
1 piece
Brick Round 1 x 1 Open StudBluePart 3062bElement 306223×1
Medium Green
1 piece
Scala, Underwear / Boxer Shorts with Blue Dots PrintMedium GreenPart 71279Element 4106767×1
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.