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.

Mosaic Set

Checking

9518 Mosaic Set

69 pieces in 46 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

Duplo, Quatro and Primo 65 pieces

  • Duplo Baseplate 12 x 16 White Part 6851 Element 4520471 or 4219762 ×1
  • Duplo Tile 2 x 2 White Part 6309 Element 4219247 or 630901 ×4
  • Duplo Tile 2 x 2 with Shape Black 1/2 Square Print White Part 6309pr0126 Element 4520798 ×2
  • Duplo Tile 2 x 2 with Shape Black 1/4 Circle Print White Part 6309pr0106 Element 4520769 ×2
  • Duplo Tile 2 x 2 with Shape Black Circle Print White Part 6309pr0112 Element 4520775 ×1
  • Duplo Tile 2 x 2 with Shape Black Inverse Arch Print White Part 6309pr0124 Element 4520793 ×1
  • Duplo Tile 2 x 2 with Shape Black Inverse Quarter Disc Print White Part 6309pr0120 Element 4520788 ×1
  • Duplo Tile 2 x 2 with Shape Black Inverse Triangle Print White Part 6309pr0116 Element 4520781 ×1
  • Duplo Tile 2 x 2 with Shape Black Isosceles Triangle Print White Part 6309pr0103 Element 4520804 ×2
  • Duplo Tile 2 x 2 with Shape Black Square Print White Part 6309pr0109 Element 4520763 ×2
  • Duplo Tile 2 x 2 with Shape Blue Disc Print White Part 6309pr0139 Element 4520771 ×1
  • Duplo Tile 2 x 2 with Shape Blue Inverse Arch Print White Part 6309pr0121 Element 4520790 ×1
  • Duplo Tile 2 x 2 with Shape Blue Inverse Isosceles Triangle Print White Part 6309pr0113 Element 4520776 ×1
  • Duplo Tile 2 x 2 with Shape Blue Inverse Quarter Disc Print White Part 6309pr0117 Element 4520784 ×1
  • Duplo Tile 2 x 2 with Shape Blue Isosceles Triangle Print White Part 6309pr0129 Element 4520801 ×2
  • Duplo Tile 2 x 2 with Shape Blue Quarter Disc Print White Part 6309pr0127 Element 4520766 ×2
  • Duplo Tile 2 x 2 with Shape Blue Right Triangle Print White Part 6309pr0128 Element 4520795 ×2
  • Duplo Tile 2 x 2 with Shape Blue Square Print White Part 6309pr0138 Element 4520759 ×2
  • Duplo Tile 2 x 2 with Shape Green 1/2 Square Print White Part 6309pr0125 Element 4520797 ×2
  • Duplo Tile 2 x 2 with Shape Green 1/4 Circle Print White Part 6309pr0105 Element 4520768 ×2
  • Duplo Tile 2 x 2 with Shape Green Circle Print White Part 6309pr0111 Element 4520774 ×1
  • Duplo Tile 2 x 2 with Shape Green Inverse Arch Print White Part 6309pr0123 Element 4520792 ×1
  • Duplo Tile 2 x 2 with Shape Green Inverse Quarter Disc Print White Part 6309pr0119 Element 4520786 ×1
  • Duplo Tile 2 x 2 with Shape Green Inverse Triangle Print White Part 6309pr0115 Element 4520780 ×1
  • Duplo Tile 2 x 2 with Shape Green Isosceles Triangle Print White Part 6309pr0137 Element 4520803 ×2
  • Duplo Tile 2 x 2 with Shape Green Square Print White Part 6309pr0108 Element 4520762 ×2
  • Duplo Tile 2 x 2 with Shape Red Disc Print White Part 6309pr0133 Element 4520770 ×1
  • Duplo Tile 2 x 2 with Shape Red Inverse Arch Print White Part 6309pr0102 Element 4520789 ×1
  • Duplo Tile 2 x 2 with Shape Red Inverse Isosceles Triangle Print White Part 6309pr0100 Element 4520777 ×1
  • Duplo Tile 2 x 2 with Shape Red Inverse Quarter Disc Print White Part 6309pr0101 Element 4520783 ×1
  • Duplo Tile 2 x 2 with Shape Red Isosceles Triangle Print White Part 6309pr0136 Element 4520799 ×2
  • Duplo Tile 2 x 2 with Shape Red Quarter Disc Print White Part 6309pr0134 Element 4520765 ×2
  • Duplo Tile 2 x 2 with Shape Red Right Triangle Print White Part 6309pr0135 Element 4520794 ×2
  • Duplo Tile 2 x 2 with Shape Red Square Print White Part 6309pr0132 Element 4520755 ×2
  • Duplo Tile 2 x 2 with Shape Yellow Disc Print White Part 6309pr0110 Element 4520773 ×1
  • Duplo Tile 2 x 2 with Shape Yellow Inverse Arch Print White Part 6309pr0122 Element 4520791 ×1
  • Duplo Tile 2 x 2 with Shape Yellow Inverse Isosceles Triangle Print White Part 6309pr0114 Element 4520779 ×1
  • Duplo Tile 2 x 2 with Shape Yellow Inverse Quarter Disc Print White Part 6309pr0118 Element 4520785 ×1
  • Duplo Tile 2 x 2 with Shape Yellow Isosceles Triangle Print White Part 6309pr0131 Element 4520802 ×2
  • Duplo Tile 2 x 2 with Shape Yellow Right Triangle Print White Part 6309pr0130 Element 4520796 ×2
  • Duplo Tile 2 x 2 with Yellow 1/4 Circle Print White Part 6309pr0104 Element 4520767 ×2
  • Duplo Tile 2 x 2 with Yellow Square Print White Part 6309pr0107 Element 4520760 ×2

Gear Parts 4 pieces

  • Storage Bin, Dacta, Small Red Part upn0032 ×1
  • Sorting Tray, Dacta, 64 Compartments Trans-Clear Part 170311 ×1
  • Storage Bin Lid, Dacta, 19 x 24 Trans-Clear Part 71082 ×1
  • Inventory Card, Set 9518-1 [No Color/Any Color] Part 170310 ×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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