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.

Airplane

Checking

5504 Airplane

31 pieces in 15 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

Yellow 6 pieces

  • Duplo Brick 2 x 2 Yellow Part 3437 Element 4583546 or 343724 ×4
  • Duplo Brick 2 x 4 Yellow Part 3011 Element 4290060 or 301124 ×2

Blue 5 pieces

  • Duplo Brick 2 x 2 Blue Part 3437 Element 343723 ×2
  • Duplo Brick 2 x 3 with Curved Top Blue Part 2302 Element 230273 or 230223 ×2
  • Duplo Brick 2 x 4 Blue Part 3011 Element 4290075 or 301123 ×1

Green 5 pieces

  • Duplo Brick 2 x 2 Green Part 3437 Element 6528078 or 4583552 ×4
  • Duplo Brick 2 x 4 Green Part 3011 Element 4290071 or 301128 ×1

Red 5 pieces

  • Duplo Brick 2 x 2 Red Part 3437 Element 4583321 or 343721 ×2
  • Duplo Brick 2 x 2 with Eye with White Spot Print, on Two Sides - Type 1 Red Part 3437pr0067 Element 4107957 ×1
  • Duplo Brick 2 x 4 Red Part 3011 Element 4583326 or 4290074 ×2

Medium Blue 4 pieces

  • Duplo Brick 2 x 2 Medium Blue Part 3437 Element 4166960 or 4162701 ×4

Dark Blue 3 pieces

  • Duplo Brick 2 x 2 Dark Blue Part 3437 Element 6528033 or 4254992 ×2
  • Duplo Brick 2 x 4 Dark Blue Part 3011 Element 4290099 or 4222126 ×1

Lime 3 pieces

  • Duplo Brick 2 x 2 Lime Part 3437 Element 4183780 ×2
  • Duplo Brick 2 x 4 Lime Part 3011 Element 4290083 or 4166923 ×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.