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.
Animal / Creature Body Part, Neck / Tail, S Curve with PinSand GreenPart 40396Element 4291640 or 4152999×1
Animal / Creature Body Part, Tail / Neck, Base Section with Black PinSand GreenPart 40395Element 4153890×2
Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End SectionSand GreenPart 40379Element 6603878 or 4508459×1
Animal Body Part / Plant, Tail / Neck / Branch / Trunk, Middle Section with Pin, Round Pin HoleSand GreenPart 40378Element 4152977×2
Animal Body Part, Dinosaur / Whale Flipper with PinSand GreenPart 40386Element 4277983 or 4155938×4
Animal Body Part, Dinosaur, Head, SmallSand GreenPart 40384Element 4175044 or 4152982×1
Animal Body Part, Dinosaur, Legs Long, Dark Gray, Medium Orange, and Dark Green Grassy PrintSand GreenPart 40382c01pr0001Element 4155800×1
Animal Body Part, Dinosaur, Legs Short, Dark Gray and Dark Green Stripes PrintSand GreenPart 40380c01pr0001Element 4155798×1
Light Gray
4 pieces
Animal Body Part, Dinosaur Body Quarter with Pin Holes, Dark Gray, Sand Green, Medium Orange, and Dark Green Streaks PrintLight GrayPart 40373pr0001Element 4153894×2
Animal Body Part, Dinosaur Body Quarter with Pin Holes, Dark Gray, Sand Green, Medium Orange, and Dark Green Streaks PrintLight GrayPart 40374pr0001Element 4153898×2
Dark Gray
2 pieces
Brick Sloped 45° 2 x 2Dark GrayPart 3039Element 4109984×2
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.