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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.

Early Math Measurement Set

Checking

9541 Early Math Measurement Set

104 pieces in 51 part and color combinations.

LEGO counts 101 pieces. This inventory comes from a separate parts catalog and lists 104; 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

Bright Green 25 pieces

  • Duplo Brick 1 x 2 x 2 Bright Green Part 4066 Element 4519299 or 4162464 ×1
  • Duplo Brick 2 x 2 Bright Green Part 3437 Element 4583789 or 4168579 ×6
  • Duplo Brick 2 x 2 with Eye with White Spot Print, on Two Sides - Type 1 Bright Green Part 3437pr0067 Element 4170800 ×1
  • Duplo Brick 2 x 3 with Curved Top Bright Green Part 2302 Element 4170797 ×2
  • Duplo Brick 2 x 3 x 2 with Curve Bright Green Part 2301 Element 4170794 ×1
  • Duplo Brick 2 x 4 Bright Green Part 3011 Element 4513084 or 4290085 ×2
  • Duplo Brick 2 x 8 Bright Green Part 4199 Element 4291890 or 4167847 ×2
  • Duplo Figure, Early Child, Hair Swept Left Brown, Red Legs, Open Jacket Print Bright Green Part 75271pr0010 Element 4168621 ×1
  • Duplo Figure, Early Child, Hair Swept Left Dark Orange, Blue Legs, Blue Overalls with 1 Strap Print Bright Green Part 75271pr0008 Element 4192458 ×1
  • Duplo Plant, Flower with 1 Top Stud Bright Green Part 6510 Element 4121575 ×5
  • Duplo Plate 2 x 4 Bright Green Part 40666 Element 4170795 ×1
  • Duplo Plate 4 x 8 Bright Green Part 4672 Element 6048851 or 4279293 ×2

Red 24 pieces

  • Duplo Brick 1 x 2 x 2 Red Part 4066 Element 4162461 or 4100634 ×1
  • Duplo Brick 2 x 2 Red Part 3437 Element 4583321 or 343721 ×5
  • Duplo Brick 2 x 2 x 2 Curved Top Red Part 3664 Element 6386988 or 4198458 ×1
  • Duplo Brick 2 x 3 with Curved Top Red Part 2302 Element 230271 or 230221 ×2
  • Duplo Brick 2 x 3 x 2 with Curve Red Part 2301 Element 230121 ×1
  • Duplo Brick 2 x 4 Red Part 3011 Element 4583326 or 4290074 ×2
  • Duplo Door / Window Frame with Raised Door Outline Red Part 2332 Element 233221 or 74923 ×1
  • Duplo Fence / Rail 1 x 6 with 5 Rails Red Part 2214 Element 4100712 or 221421 ×5
  • Duplo Plant, Flower with 1 Top Stud Red Part 6510 Element 4100774 ×5
  • Duplo Plate 2 x 4 Red Part 40666 Element 4583329 or 4567246 ×1

Yellow 23 pieces

  • Duplo Animal Tiger Cub on Green Base Yellow Part 2275c01pr0003 Element 4206384 ×1
  • Duplo Brick 1 x 2 x 2 Yellow Part 4066 Element 4519295 or 4519293 ×1
  • Duplo Brick 2 x 2 with Eye, Giraffe's Print, on Two Sides Yellow Part 3437pr0050 Element 4185513 ×1
  • Duplo Brick 2 x 2 x 2 Curved Top Yellow Part 3664 Element 6023350 or 366424 ×1
  • Duplo Brick 2 x 3 with Curved Top Yellow Part 2302 Element 230274 or 230224 ×2
  • Duplo Brick 2 x 3 x 2 with Curve Yellow Part 2301 Element 230124 ×1
  • Duplo Brick 2 x 4 Yellow Part 3011 Element 4290060 or 301124 ×2
  • Duplo Brick 2 x 4 x 2 Rounded Ends with Large Centered Eyes Print Yellow Part 4198pr9981 Element 81981 ×2
  • Duplo Door / Window Yellow Part 4247 Element 424724 ×1
  • Duplo Fence / Rail 1 x 6 with 5 Rails Yellow Part 2214 Element 4100715 or 221424 ×5
  • Duplo Plant, Flower with 1 Top Stud Yellow Part 6510 Element 4100853 ×5
  • Duplo Plate 2 x 4 Yellow Part 40666 Element 4160152 ×1

Blue 15 pieces

  • Duplo Brick 1 x 2 x 2 Blue Part 4066 Element 4519303 or 4162459 ×1
  • Duplo Brick 2 x 2 Blue Part 3437 Element 343723 ×5
  • Duplo Brick 2 x 3 with Curved Top Blue Part 2302 Element 230273 or 230223 ×2
  • Duplo Brick 2 x 3 x 2 with Curve Blue Part 2301 Element 230123 ×1
  • Duplo Brick 2 x 4 Blue Part 3011 Element 4290075 or 301123 ×2
  • 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
  • Duplo Plate 2 x 4 Blue Part 40666 Element 4170804 ×1
  • Storage Bin, Dacta, Medium Blue Part upn0038 ×1

White 8 pieces

  • Duplo Baseplate 12 x 16 White Part 6851 Element 4520471 or 4219762 ×1
  • Duplo Brick 2 x 2 White Part 3437 Element 343701 ×6
  • Duplo Figure, Early Child, with Straight Hair Brown, Red Legs, Red Overalls with 1 Strap Print White Part 75176pr0004 ×1

Orange 5 pieces

  • Duplo Plant, Flower with 1 Top Stud Orange Part 6510 Element 4224677 or 4217971 ×5

Earth Orange 1 piece

  • Duplo Animal Lion Cub on Base Earth Orange Part 2275c01pr0001 ×1

Green 1 piece

  • Duplo Fire / Grass / Ice 1 x 4 x 2 Green Part 31168 Element 4589698 or 4114440 ×1

Medium Dark Pink 1 piece

  • Duplo Figure, Early Child, with Pigtails Light Yellow, Orange Legs, Orange Overalls Print Medium Dark Pink Part 76045pr0006 Element 4167770 ×1

Trans-Clear 1 piece

  • Storage Bin Lid, Dacta, 19 x 24 Trans-Clear Part 71082 ×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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