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The Workshop Sheet 10 of 22

LEGO Missing Piece Checker

Enter a set number, mark each piece found or missing, and leave with a list of what is missing, the element IDs LEGO asks for and links to buy the parts. It is free and needs no account. Rule out the usual hiding places first.

Tigger's Treehouse

Checking

2990 Tigger's Treehouse

35 pieces in 22 part and color combinations.

LEGO counts 33 pieces. This inventory comes from a separate parts catalog and lists 35; 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.

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Piece checklist

Duplo, Quatro and Primo 33 pieces

  • Duplo Brick 2 x 2 Blue Part 3437 Element 343723 ×1
  • Duplo Brick 2 x 4 Blue Part 3011 Element 4290075 or 301123 ×1
  • Duplo Brick 2 x 2 x 2 with Indented Sides (Tree Trunk) Dark Orange Part 31061 Element 4100841 ×3
  • Duplo Sign, Wood Grain with Two Gifts / Presents, Party Hat, and Arrow Print Dark Orange Part 31283pr0003 ×1
  • Duplo Brick 2 x 2 Green Part 3437 Element 6528078 or 4583552 ×3
  • Duplo Brick 2 x 3 with Curved Top Green Part 2302 Element 230278 or 230228 ×4
  • Duplo Brick 2 x 4 Green Part 3011 Element 4290071 or 301128 ×3
  • Duplo Brick 2 x 8 Green Part 4199 Element 4291886 or 419928 ×2
  • Duplo Plant Vine with Leaves and Two End Anti-Studs Green Part 89158 Element 6021037 or 4590614 ×1
  • Duplo Plant, Flower with 1 Top Stud Green Part 6510 Element 4100854 ×1
  • Duplo Log Bridge Light Turquoise Part 31062 Element 4141640 ×1
  • Duplo Plant Tree Trunk Segment Base Purple Part 6411 Element 4141639 ×1
  • Duplo Plant, Flower with 1 Top Stud Purple Part 6510 Element 4121749 ×1
  • Duplo Roofpiece, Slope 30°, 4 x 4 Shingled, with Yellow Base Purple Part 4860c04 ×2
  • 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 ×1
  • Duplo Brick 2 x 2 Yellow Part 3437 Element 4583546 or 343724 ×1
  • Duplo Brick 2 x 2 Pin on Side Yellow Part 3966 Element 4141638 ×2
  • Duplo Brick 2 x 2 with Lego Logo Print Yellow Part 3437pr0015 Element 4121949 ×1
  • Duplo Brick 2 x 4 Yellow Part 3011 Element 4290060 or 301124 ×1

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

  • Duplo Figure Bear, with Red Shirt Print (Winnie the Pooh) Light Orange Part dupfig0017 ×1
  • Duplo Figure with Black Tiger Stripes Print (Tigger) Orange Part dupfig0018 ×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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