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.

Music Tapper

Checking

3362 Music Tapper

4 pieces in 4 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

Duplo, Quatro and Primo 4 pieces

  • Music Builder Sound Plug with Red Base and Red Xylophone Print Blue Part 43738c02pr0006 Element 4172603 or 4172587 ×1
  • Music Builder Composer Tapper Base with Lime Toes Green Part 5242c01 Element 4172579 ×1
  • Music Builder Sound Plug with Yellow Base and Yellow Dog Print Red Part 43738c01pr0007 Element 4172604 ×1
  • Music Builder Sound Plug with Blue Base and Two Blue Drums Print Yellow Part 43738c03pr0001 Element 4172595 ×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.