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, LargeBlackPart 11089Element 6213729 or 6015884×1
Creature Body Part, Wing 9L with Stylized FeathersBlackPart 11091Element 6015899×2
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, MediumWhitePart 87747Element 6270092 or 4613941×2
Technic Pins
5 pieces
Technic Pin with Friction Ridges Lengthwise and Center SlotsBlackPart 2780Element 4121715 or 278026×2
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×2
Technic Pin without Friction Ridges LengthwiseLight Bluish GrayPart 3673Element 4211807 or 3673194×1
Energy Effects
1 piece
Large Figure Weapon Accessory, Flame / Lightning Bolt with Axle Hole with Marbled Trans-Light Blue PatternWhitePart 11302pat0003Element 6266807 or 6029783×1
Projectiles / Launchers
1 piece
Projectile, Large Figure Weapon, Zamor Sphere / Ball with Marbled White PatternTrans-Light BluePart 54821pat0007Element 6075061×1
Technic Beams Special
1 piece
Technic Beam 1 x 3 with Ball Joint in MiddleDark Bluish GrayPart 98577Element 6001085×1
Technic Bushes
1 piece
Technic BushLight Bluish GrayPart 3713Element 6275844 or 6271817×1
Technic Special
1 piece
Technic Circular Saw Blade 9 x 9 with Pin HoleTrans-Light BluePart 61403Element 6079018×1
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.