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.
Duplo Plant, Flower with 1 Top StudsRedPart 84195Element 6387973×1
Duplo Brick 2 x 2Reddish BrownPart 3437Element 6390099 or 4641062×1
Duplo Brick 2 x 3 with Curved BottomReddish BrownPart 98252Element 6386987×2
Duplo Brick 2 x 3 with Curved TopReddish BrownPart 2302Element 6484348×1
Duplo Brick Round 2 x 2 x 2Reddish BrownPart 98225Element 6390995×1
Duplo Plate Round 4 x 4Reddish BrownPart 98222Element 6529034 or 6390996×1
Duplo Brick 1 x 2 x 2 with Bottom TubeReddish OrangePart 76371Element 6481112×4
Duplo Brick 2 x 2 x 2 SlopeReddish OrangePart 70676Element 6469481×1
Duplo Brick 1 x 2 x 2 with Bottom TubeTrans-Light BluePart 76371Element 6514047 or 6210314×2
Duplo Brick 2 x 2Trans-Light BluePart 3437Element 6507900 or 6201835×3
Duplo Animal Bear, Sitting, Panda PrintWhitePart 49989pr0002Element 6321063 or 6262266×1
Duplo Animal Panda, Sitting, Rectangle EyesWhitePart 12146pr0001Element 6058756 or 6019895×1
Duplo Food BoneWhitePart 5926Element 6518142×1
Duplo Food Fruit PyramidWhitePart 16434Element 6528789×1
Duplo Brick 1 x 2 x 2 with Bottom TubeYellowPart 76371Element 6030817×2
Duplo Brick 2 x 3 with Curved TopYellowPart 2302Element 230274 or 230224×1
Duplo Brick 2 x 4 Curved TopYellowPart 98223Element 6099784 or 4654826×2
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.