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 Brick 2 x 4 x 2 Rounded Ends with Ears and Hippo Face PrintLight AquaPart 72133pr0007Element 6375534×1
Duplo Brick 2 x 4 x 2 Rounded Ends with Hippo Body and Ball PrintLight AquaPart 4198pr9971Element 6375535×1
Duplo BucketLimePart 82562Element 6505873 or 6379180×1
Duplo Boat / Raft / Ring, 8 x 8 TopMedium AzurePart 79782Element 6428859 or 6375983×1
Duplo Brick 2 x 4 x 2 Cloud with HolesMedium AzurePart 79784Element 6375986×1
Duplo Boat / Raft / Ring, 8 x 8 TopRedPart 79782Element 6428861 or 6380433×1
Duplo Brick 2 x 4 x 2 Rounded Ends with Ears and Bear Face, Black Eyes, Nose, Mouth, Bright Pink Cheeks PrintWhitePart 72133pr0005Element 6375536×1
Duplo Brick 2 x 4 x 2 Rounded Ends with Polar Bear Body and Ice Cream PrintWhitePart 4198pr9974Element 6375537×1
Duplo Boat / Raft / Ring, 8 x 8 TopYellowPart 79782Element 6428860 or 6379177×1
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.