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.

Block-O-Dile

Checking

5359 Block-O-Dile

27 pieces in 14 part and color combinations.

LEGO counts 26 pieces. This inventory comes from a separate parts catalog and lists 27; 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

Bright Green 8 pieces

  • Duplo Brick 2 x 2 Bright Green Part 3437 Element 4583789 or 4168579 ×2
  • Duplo Brick 2 x 2 with Eye, Crocodile Slanted Print, on Two Sides Bright Green Part 3437pr0047 Element 4185510 ×1
  • Duplo Brick 2 x 3 with Curved Top Bright Green Part 2302 Element 4170797 ×2
  • Duplo Brick 2 x 4 Bright Green Part 3011 Element 4513084 or 4290085 ×3

Red 5 pieces

  • Duplo Brick 2 x 2 Red Part 3437 Element 4583321 or 343721 ×2
  • Duplo Brick 2 x 4 Red Part 3011 Element 4583326 or 4290074 ×2
  • Duplo Brick 8 x 8 Red Part 31113 Element 4107918 ×1

Green 4 pieces

  • Duplo Block-o-dile Green Part 49767 ×1
  • Duplo Brick 2 x 2 Green Part 3437 Element 6528078 or 4583552 ×2
  • Duplo Brick 2 x 4 Green Part 3011 Element 4290071 or 301128 ×1

Medium Lime 4 pieces

  • Duplo Brick 2 x 2 Medium Lime Part 3437 Element 4175619 ×4

Yellow 4 pieces

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

Dark Purple 2 pieces

  • Duplo Brick 2 x 2 Dark Purple Part 3437 Element 6028109 or 4226865 ×2

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.