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.

Basic Building Bucket

Checking

2424 Basic Building Bucket

84 pieces in 19 part and color combinations.

LEGO counts 82 pieces. This inventory comes from a separate parts catalog and lists 84; 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 31 pieces

  • Duplo Brick 2 x 2 Yellow Part 3437 Element 4583546 or 343724 ×19
  • Duplo Brick 2 x 2 with Eye without White Spot Print, on One Side Yellow Part 3437pr0055 ×2
  • Duplo Brick 2 x 4 Yellow Part 3011 Element 4290060 or 301124 ×6
  • Duplo Brick 2 x 4 x 2 Rounded Ends with Red Nose and Freckle Face Print Yellow Part 4198pr9989 ×1
  • Duplo Car Base 2 x 6 with Open Hitch End and Red Wheels Yellow Part 2312c02 Element 6006222 or 4592297 ×1
  • Duplo Door / Window Frame Flat Front Surface Yellow Part 4253 ×2

Red 19 pieces

  • Duplo Brick 2 x 2 Red Part 3437 Element 4583321 or 343721 ×10
  • Duplo Brick 2 x 4 Red Part 3011 Element 4583326 or 4290074 ×4
  • Duplo Brick 2 x 6 x 2 with Curved Ends Red Part 4197 Element 419721 ×1
  • Duplo Door / Window Red Part 4247 Element 424721 ×1
  • Duplo Door / Window with Porthole Red Part 4248 Element 4143624 or 424821 ×1
  • Duplo Plate 2 x 4 x 1/3 Half Circle with 2 Studs [Thin] Red Part 3808 ×2

Blue 18 pieces

  • Duplo 2 x 2 x 2 Figure Brick Early, Sailor Hat Blue, Freckles Print Blue Part dupfig0003pr0001 ×1
  • Duplo Brick 2 x 2 Blue Part 3437 Element 343723 ×11
  • Duplo Brick 2 x 4 Blue Part 3011 Element 4290075 or 301123 ×6

Green 16 pieces

  • Duplo 2 x 2 x 2 Figure Brick Early, Long Swept Hair Fabuland Brown, Eyelashes Print Green Part dupfig0011pr0003 ×1
  • Duplo Brick 2 x 2 Green Part 3437 Element 6528078 or 4583552 ×10
  • Duplo Brick 2 x 4 Green Part 3011 Element 4290071 or 301128 ×4
  • Duplo Brick 2 x 8 Green Part 4199 Element 4291886 or 419928 ×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.