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.

50 Jahre Anniversary Bucket

Checking

3191 50 Jahre Anniversary Bucket

103 pieces in 21 part and color combinations.

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

Yellow 28 pieces

  • Duplo Brick 2 x 2 Yellow Part 3437 Element 4583546 or 343724 ×15
  • Duplo Brick 2 x 2 with Eye with White Spot Print, on Two Sides - Type 1 Yellow Part 3437pr0067 Element 82061 ×3
  • Duplo Brick 2 x 4 Yellow Part 3011 Element 4290060 or 301124 ×5
  • Duplo Brick 2 x 4 x 2 Rounded Ends with Large Centered Eyes Print Yellow Part 4198pr9981 Element 81981 ×1
  • Duplo Door / Window with Four Panes Yellow Part 4809 Element 480924 ×2
  • Duplo Plant, Flower with 1 Top Stud Yellow Part 6510 Element 4100853 ×2

Red 25 pieces

  • Duplo Brick 2 x 2 Red Part 3437 Element 4583321 or 343721 ×15
  • Duplo Brick 2 x 3 x 2 with Curve Red Part 2301 Element 230121 ×2
  • Duplo Brick 2 x 4 Red Part 3011 Element 4583326 or 4290074 ×5
  • Duplo Brick 2 x 8 Red Part 4199 Element 4291879 or 419921 ×1
  • Duplo Door / Window Frame with Raised Door Outline Red Part 2332 Element 233221 or 74923 ×2

Blue 23 pieces

  • Duplo Brick 2 x 2 Blue Part 3437 Element 343723 ×15
  • Duplo Brick 2 x 4 Blue Part 3011 Element 4290075 or 301123 ×5
  • Duplo Brick 2 x 6 Blue Part 2300 Element 4290388 or 230023 ×1
  • Duplo Brick 2 x 6 x 2 with Curved Ends Blue Part 4197 Element 4161148 or 419723 ×1
  • Duplo Car Base 2 x 6 with Open Hitch End and Red Wheels Blue Part 2312c02 Element 4142683 ×1

Bright Green 22 pieces

  • Duplo Brick 2 x 2 Bright Green Part 3437 Element 4583789 or 4168579 ×15
  • 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 ×5

Black 5 pieces

  • Duplo Brick 2 x 2 Black Part 3437 Element 4583790 or 343726 ×4
  • Duplo Brick 2 x 4 Black Part 3011 Element 4513081 or 4290069 ×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.