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 Plate 6 x 12TanPart 4196Element 6477725 or 6284700×2
Duplo Brick 1 x 2 x 2 with X-Ray, Dark Blue Background, White Skeleton PrintTrans-Light BluePart 76371pr0267Element 6521873×1
Duplo Animal Bear, Sitting with Dark Bluish Grey Ears, Legs, Dark Pink Hearts on Cheeks, Sew Line on Forehead PrintWhitePart 49989pr0003Element 6527061×1
Duplo Brick 1 x 2 x 2 with Bottom TubeWhitePart 76371Element 6101121×4
Duplo Brick 1 x 2 x 2 with Medium Lavender Border, Medium Azure/Lavender/Yellow Umbrellas, Houses, Hearts, Stars PrintWhitePart 76371pr0266Element 6521872×1
Duplo Brick 2 x 2WhitePart 3437Element 343701×12
Duplo Brick 2 x 4WhitePart 3011Element 301101×6
Duplo Brick 2 x 4 x 2 Curved Top with Heart, White Heartbeat Graph, Star Of Life PrintWhitePart 31213pr0039Element 6521867×1
Duplo Door / Window Frame Flat Front Surface, Completely Open BackWhitePart 61649Element 6135524 or 4622476×2
Duplo Door Frame 2 x 4 x 5WhitePart 92094Element 6208542×1
Duplo Support / Umbrella Stand with Square Base (fits 92002)WhitePart 93353Element 6258908×1
Duplo Brick 1 x 2 x 2 with Measuring Tape, Bottom Half Giraffe, Tree PrintYellowPart 76371pr0265Element 6521870×1
Duplo Brick 1 x 2 x 2 with Measuring Tape, Top Half Giraffe, Tree PrintYellowPart 76371pr0264Element 6521869×1
Duplo Plate 2 x 4YellowPart 40666Element 4160152×2
Duplo Brick 2 x 2Yellowish GreenPart 3437Element 6209859 or 4648235×1
Duplo Brick 2 x 4Yellowish GreenPart 3011Element 6523037 or 4648232×4
Duplo Figure with Thick Hair Combed Forward and Beard Dark Orange, Dark Blue LegsGreenPart 35516c01pr0001Element 6566997 or 6534760×1
Duplo Figure Child, Afro Dark Orange, Light Bluish Gray Legs, Dark Azure SleevesWhitePart 102708pr0003Element 6533350×1
Duplo Figure with Hair Side Parted Dark Brown, Dark Purple Legs, White Top, White Arms, Attached Stethoscope (Medic)WhitePart 80106c01pr0002Element 6548219 or 6533434×1
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.