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.

School Room

Checking

2442 School Room

9 pieces in 9 part and color combinations.

LEGO counts 7 pieces. This inventory comes from a separate parts catalog and lists 9; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

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 4 pieces

  • Duplo Brick 1 x 2 x 2 with Three Books Print, ABC and 123 Yellow Part 4066pr0118 ×1
  • Duplo Brick 2 x 2 Yellow Part 3437 Element 4583546 or 343724 ×1
  • Duplo Brick 2 x 4 Yellow Part 3011 Element 4290060 or 301124 ×1
  • Duplo Drawer 2 x 2 with Pull Handle Yellow Part 4891 Element 4171348 ×1

Red 3 pieces

  • Duplo 2 x 2 x 2 Figure Brick Early, Straight Hair Yellow, Nose Freckles Print Red Part dupfig0012pr0002 ×1
  • Duplo Cabinet 2 x 2 x 1.5 Red Part 4890 Element 6249378 or 4171339 ×1
  • Duplo Plate 2 x 4 x 1/3 with 4 Center Studs [Thin] Red Part 4121 ×1

Blue 2 pieces

  • Duplo 2 x 2 x 2 Figure Brick Early, Short Spiky Hair Red, Cheek Freckles Print Blue Part dupfig0009pr0003 ×1
  • Duplo Brick 1 x 2 x 2 with Pencil and Crayons in Box with Red Heart Print Blue Part 4066pr0055 ×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.