Free tool

LEGO Missing Piece Checker

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.

Brain Attack

Checking

40084 Brain Attack

6 pieces in 6 part and color combinations.

Before you call it missing

Builders who report a missing piece often find it in one of these places. Tick each one off as you look.

Show

Piece checklist

Large Buildable Figures 2 pieces

  • Large Figure Head / Brain with Red Centre Black Part 11164pat0001 Element 6040054 ×1
  • Large Figure Weapon Blade, Curved Tip with Axle Red Part 11305 Element 6053073 or 6021868 ×1

Technic Axles 2 pieces

  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 1 spare in the box ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 1 spare in the box ×1

Energy Effects 1 piece

  • Large Figure Weapon Accessory, Flame / Lightning Bolt with Axle Hole with Marbled Trans-Yellow Pattern Trans-Red Part 11302pat0001 Element 6016236 ×1

Technic Connectors 1 piece

  • Technic Axle Connector 2 x 3 Quadruple Pearl Titanium Part 11272 Element 6251539 or 6022718 1 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.

Request a replacement from LEGO

Buy the piece

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.