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.

Rainbow

Checking

41900 Rainbow

33 pieces in 9 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

Tiles Round and Curved 28 pieces

  • Tile Round 1 x 1 Quarter Light Aqua Part 25269 Element 6199886 1 spare in the box ×4
  • Tile Round 1 x 1 Quarter Red Part 25269 Element 6170390 1 spare in the box ×4
  • Tile Round 1 x 1 Trans-Light Blue Part 98138 Element 6514192 or 6274739 1 spare in the box ×4
  • Tile Round 1 x 1 Quarter White Part 25269 Element 6548285 or 6172366 1 spare in the box ×4
  • Tile Round 1 x 1 Quarter with Rainbow Print White Part 25269pr0006 Element 6253632 1 spare in the box ×4
  • Tile Round 1 x 1 Quarter Yellow Part 25269 Element 6195183 1 spare in the box ×8

Tiles 4 pieces

  • Tile 1 x 1 with Rainbow, Sand Red, Yellow, Dark Azure, Medium Blue, Dark Purple Print White Part 3070bpr0192 Element 6253635 1 spare in the box ×2
  • Tile 1 x 1 with Rainbow, Sand Red, Yellow, Dark Azure, Medium Blue, Dark Purple, Cloud Print White Part 3070bpr0199 Element 6254609 1 spare in the box ×2

Tools 1 piece

  • DOTS Bracelet 2 Stud Wide Medium Azure Part 66821 Element 6300081 ×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.