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 Body Part, Barb / Claw / Tooth / Talon / Horn, SmallRedPart 53451Element 6270107 or 45683882 spares in the box×4
Technic Axles
3 pieces
Technic Axle 5Light Bluish GrayPart 32073Element 32073194 or 4211639×1
Technic Axle 2 NotchedRedPart 32062Element 41428651 spare in the box×2
Energy Effects
2 pieces
Large Figure Weapon Accessory, Flame / Lightning Bolt with Axle Hole with Marbled Trans-Yellow PatternTrans-RedPart 11302pat0001Element 6016236×2
Minifig Shields, Weapons, & Tools
1 piece
Weapon Spike Flexible 3.5LRedPart 64727Element 6270082 or 46168421 spare in the box×1
Technic Pins
1 piece
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 42064821 spare in the box×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.