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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 (7844) and each piece's element ID, both listed above.
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Duplo Hose with Flat Silver Nozzle and Stud Holder
×1
Duplo Winch Drum Holder 2 x 2 x 3
×1
Duplo Axe / Tomahawk with Round Handle and Solid Bottom
×1
Duplo Digger Bucket Arm
×1
Duplo Digger Bucket Arm Holder, Pivot Joint
×1
Duplo Fence / Rail 1 x 6 with 5 Rails
×2
Duplo Hose 11L with Stud Holder and Black Hose
×1
Duplo Hose Nozzle with Two Handles and Clip
×1
Duplo Siren with Light & Sound, 1 x 2 Base with Red Button
×1
Duplo Winch Drum Narrow High with White String and Black Hook with Stud Case
×1
Duplo Wrench
×1
Duplo Wave (Fire, Water, Flame) 2 x 1 x 5 with Marbled White Tip
×1
Duplo Turntable 2 x 2 with Square Top
×1
Duplo Brick 2 x 4
×1
Duplo Panel 1 x 2 x 1 2/3 Sloped with 3 Embossed Gauges
×3
Duplo Plate 2 x 4
×1
Duplo Truck Semi-Tractor Cab with Yellow Base
×1
Duplo Water Container, 2 x 3 Studs on Top
×3
Duplo Brick 2 x 4
×2
Duplo Trailer Four Rear Wheels, Elevated Front End, 4 x 12 Studs
×1
Duplo Truck Base with Molded Engine 5 x 9
×1
Duplo Figure with Fireman Helmet Silver, and Nougat Face and Hands
×1
Duplo Figure with Headset and Cap Yellow, with Dark Blue Arms, and Legs, Yellow Knee Pads Print, and Yellow Vest with ID Badge and Radio Print
×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.
