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.
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]Light GrayPart 2654Element 265402×15
Technic Axle Pin without Friction Ridges LengthwiseLight GrayPart 3749Element 4184168 or 4154179×6
Turntable 2 x 2 Plate - TopLight GrayPart 3679Element 367952 or 367902×4
Brown
29 pieces
Bracket 2 x 2 - 2 x 2BrownPart 3956Element 4110012 or 395625×1
Plate 1 x 3BrownPart 3623Element 362325×2
Plate 2 x 2BrownPart 3022Element 4109983×14
Plate 2 x 4BrownPart 3020Element 4109982 or 302025×8
Plate 4 x 10BrownPart 3030Element 4110009×2
Tile Special 2 x 2 with Top PinBrownPart 2460Element 4109980 or 246025×2
Chrome Silver
6 pieces
Rock 1 x 1 Crystal 5 PointChrome SilverPart 30385Element 4119342×2
Weapon Harpoon [4 Grooves on Shaft]Chrome SilverPart 57467×4
Blue
3 pieces
Plate Special 1 x 2 with 1 Stud without Groove (Jumper)BluePart 3794a×1
Technic Brick 1 x 2 [1 Pin Hole]BluePart 3700Element 370023×2
Minifigures
4 figures
Stingray 1Minifigure, checked as a whole figure×2
Stingray 3Minifigure, checked as a whole figure×1
Stingray 2Minifigure, checked as a whole figure×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.