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.

Building Set with Storage Bunny

Checking

1957 Building Set with Storage Bunny

29 pieces in 16 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 27 pieces

  • Duplo Brick 2 x 2 Blue Part 3437 Element 343723 ×2
  • Duplo Brick 2 x 4 Blue Part 3011 Element 4290075 or 301123 ×1
  • Duplo Car Base 2 x 6 with Red Wheels and Old Style Closed Hitch End Blue Part 4883c02 ×1
  • Duplo Brick 2 x 4 x 2 Rounded Ends Green Part 4198 Element 4198456 or 644828 ×1
  • Duplo Brick 2 x 2 Red Part 3437 Element 4583321 or 343721 ×6
  • Duplo Brick 2 x 4 Red Part 3011 Element 4583326 or 4290074 ×4
  • Duplo Brick 2 x 8 Red Part 4199 Element 4291879 or 419921 ×1
  • Duplo Door / Window Red Part 4247 Element 424721 ×1
  • Duplo Door / Window with Porthole Red Part 4248 Element 4143624 or 424821 ×1
  • Duplo Storage, Rabbit / Bunny Plush Bag Red Part dupupn0140 ×1
  • Duplo Brick 2 x 2 Yellow Part 3437 Element 4583546 or 343724 ×3
  • Duplo Brick 2 x 4 Yellow Part 3011 Element 4290060 or 301124 ×2
  • Duplo Brick 2 x 8 Yellow Part 4199 Element 4291883 or 419924 ×1
  • Duplo Door / Window Frame Flat Front Surface Yellow Part 4253 ×2

Non-Buildable Figures (Duplo, Fabuland, etc) 2 pieces

  • Duplo 2 x 2 x 2 Figure Brick Early, Short Spiky Hair Red, Nose Freckles Print Blue Part dupfig0009pr0002 ×1
  • Duplo 2 x 2 x 2 Figure Brick Early, Straight Hair Yellow, Nose Freckles Print Red Part dupfig0012pr0002 ×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.