BlockTalk Find Your Set

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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.

Explore Strata

Checking

5212 Explore Strata

140 pieces in 33 part and color combinations.

LEGO counts 139 pieces. This inventory comes from a separate parts catalog and lists 140; 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

Blue 23 pieces

  • Duplo Brick 2 x 2 Blue Part 3437 Element 343723 ×13
  • 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 ×2
  • Duplo Brick 2 x 4 Blue Part 3011 Element 4290075 or 301123 ×3
  • Duplo Brick 2 x 8 Blue Part 4199 Element 4291881 or 419923 ×1
  • Duplo Plate 2 x 4 Blue Part 40666 Element 4170804 ×2

Yellow 23 pieces

  • Duplo Brick 2 x 2 Yellow Part 3437 Element 4583546 or 343724 ×13
  • Duplo Brick 2 x 2 with Eye, Giraffe's Print, on Two Sides Yellow Part 3437pr0050 Element 4185513 ×2
  • Duplo Brick 2 x 3 with Curved Top Yellow Part 2302 Element 230274 or 230224 ×2
  • Duplo Brick 2 x 4 Yellow Part 3011 Element 4290060 or 301124 ×3
  • Duplo Door / Window with Four Panes Yellow Part 4809 Element 480924 ×1
  • Duplo Plate 2 x 4 Yellow Part 40666 Element 4160152 ×2

Red 22 pieces

  • Duplo Brick 2 x 2 Red Part 3437 Element 4583321 or 343721 ×13
  • Duplo Brick 2 x 3 with Curved Top Red Part 2302 Element 230271 or 230221 ×1
  • Duplo Brick 2 x 4 Red Part 3011 Element 4583326 or 4290074 ×3
  • Duplo Brick 2 x 8 Red Part 4199 Element 4291879 or 419921 ×1
  • Duplo Car Base 2 x 6 with Yellow Wheels and Open Hitch End Red Part 2312c01 Element 6006223 or 4592299 ×1
  • Duplo Door / Window Frame with Raised Door Outline Red Part 2332 Element 233221 or 74923 ×1
  • Duplo Plate 2 x 4 Red Part 40666 Element 4583329 or 4567246 ×2

Bright Green 20 pieces

  • Duplo Brick 2 x 2 Bright Green Part 3437 Element 4583789 or 4168579 ×13
  • Duplo Brick 2 x 2 with Eye, Crocodile Slanted Print, on Two Sides Bright Green Part 3437pr0047 Element 4185510 ×1
  • Duplo Brick 2 x 3 with Curved Top Bright Green Part 2302 Element 4170797 ×1
  • Duplo Brick 2 x 4 Bright Green Part 3011 Element 4513084 or 4290085 ×3
  • Duplo Plate 2 x 4 Bright Green Part 40666 Element 4170795 ×2

Lime 18 pieces

  • Duplo Brick 2 x 2 Lime Part 3437 Element 4183780 ×13
  • Duplo Brick 2 x 4 Lime Part 3011 Element 4290083 or 4166923 ×3
  • Duplo Plate 2 x 4 Lime Part 40666 Element 4185178 ×2

Medium Blue 17 pieces

  • Duplo Brick 2 x 2 Medium Blue Part 3437 Element 4166960 or 4162701 ×13
  • Duplo Brick 2 x 4 Medium Blue Part 3011 Element 4290088 or 4167177 ×3
  • Duplo Plate 2 x 4 Medium Blue Part 40666 Element 4216758 or 4194539 ×1

Orange 17 pieces

  • Duplo Brick 2 x 2 Orange Part 3437 Element 4159527 ×13
  • Duplo Brick 2 x 4 Orange Part 3011 Element 4290078 or 4158403 ×3
  • Duplo Plate 2 x 4 Orange Part 40666 Element 4183518 ×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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