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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.
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
LEGO's request form asks for the set number (10807) and each piece's element ID, both listed above.
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Duplo Animal Horse with one Stud and Raised Hoof with Dark Orange Bridle & Saddle Print
×1
Duplo Plate 2 x 6
×1
Duplo Camper Base with 4 x 8 Studs
×1
Duplo Horse Trailer Top with Horseshoe, Horse & Stars Print
×1
Duplo Car Base 4 x 8 with Four Black Wheels and Yellow Hubs
×1
Duplo Trailer Flatbed 4 x 8 Studs with Hitch Ends and 4 Yellow Wheels
×1
Duplo Plant, Flower with 1 Top Stud
×1
Duplo Car Body with Windscreen Frame with Yellow Headlights & White Racing Stripes Print
×1
Duplo Flagpole / Antenna 1 x 9
×1
Duplo Brick 1 x 2 x 2 with Side Cutouts and Channel in Top
×2
Duplo Brick 2 x 2
×2
Duplo Figure with Thick Short Hair Combed over Forehead and Bun Black, with Green Top - Tan Legs
×1
Duplo Figure Child with Riding Helmet Black, with White Top over Pink Shirt with Heart - Red Legs
×1
Tick each piece as you find it, or mark it missing.
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.
Request a replacement from LEGOMark 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.
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.
