BlockTalk Find Your Set

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.

Happy Explorers Stack 'n' Learn

Checking

2591 Happy Explorers Stack 'n' Learn

19 pieces in 17 part and color combinations.

LEGO counts 17 pieces. This inventory comes from a separate parts catalog and lists 19; 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

Duplo, Quatro and Primo 17 pieces

  • Primo Brick 1 x 2 with Green, Yellow Red Squares Print Blue Part 31001pr0004 ×1
  • Primo Brick Arch 1 x 4 x 2 Blue Part 31150 Element 4142698 or 4114626 ×1
  • Primo Wheel Base 1 x 2 with Hitches and Yellow Wheels Blue Part 31605c01 Element 4114659 or 4114617 ×1
  • Primo Brick 1 x 1 Green Part 31000 Element 4142222 or 4112267 ×2
  • Primo Brick 1 x 2 Green Part 31001 Element 4142224 or 4112259 ×1
  • Primo Catapult 1 x 2 Green Part 76430 ×1
  • Primo Wheel Base 1 x 2 with Hitches and Yellow Wheels Green Part 31605c01 Element 4143368 or 4114658 ×1
  • Primo Brick 1 x 1 Red Part 31000 Element 4223135 or 4142219 ×2
  • Primo Brick 1 x 2 Red Part 31001 Element 4142226 or 4112261 ×1
  • Primo Brick 1 x 1 with Round Rattle, Blue Base, Overalls, Animal Print White Part 31005pr0022 ×1
  • Primo Animal Elephant Yellow Part 75596 Element 4142267 or 4118703 ×1
  • Primo Brick 1 x 1 Yellow Part 31000 Element 4225981 or 4142221 ×1
  • Primo Brick 1 x 1 with Blue Squares Print Yellow Part 31000pr0025 ×1
  • Primo Brick 1 x 1 with Lego Logo Print Yellow Part 31000pr0001 Element 4142212 or 4108056 ×1
  • Primo Brick 1 x 3, with Curved Bottom (Rocker) Yellow Part 31767 Element 4155664 or 4141023 ×1

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

  • Primo Figure Boy with Blue Base, Blue Suspenders Print, Brown Hair Red Part 75595c02pr0003 Element 4107976 ×1
  • Primo Figure Girl with Green Base, Daisy Print, Brown Hair Red Part 76080c01pr0001 Element 4261189 or 4261187 ×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.

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