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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.

Basic Building Set

Checking

1511 Basic Building Set

67 pieces in 25 part and color combinations.

LEGO counts 59 pieces. This inventory comes from a separate parts catalog and lists 67; 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

Yellow 19 pieces

  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×4
  • Brick 2 x 3 Yellow Part 3002 Element 300224 ×2
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×6
  • Door Frame 2 x 4 x 5 Yellow Part 4130 Element 4217794 ×1
  • Fence Lattice 1 x 4 x 2 Yellow Part 3185 Element 318524 ×4
  • Window 2 x 4 x 3 Frame with Solid Studs Yellow Part 4132 Element 4520883 or 4218646 ×2

Red 17 pieces

  • Brick 2 x 10 Red Part 3006 Element 4617857 or 300621 ×2
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×4
  • Brick 2 x 3 Red Part 3002 Element 300271 or 300221 ×2
  • Brick 2 x 4 Red Part 3001 Element 300121 ×6
  • Door 1 x 4 x 5 Red Part 4131 ×1
  • Window 2 x 4 x 3 Pane Red Part 4133 ×2

Blue 12 pieces

  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×4
  • Brick 2 x 3 Blue Part 3002 Element 300223 ×2
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×6

Black 10 pieces

  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×2
  • Brick 2 x 3 Black Part 3002 Element 300226 ×2
  • Brick Special 2 x 4 with Wheels, Freestyle Red Black Part 4180c02 ×2
  • Tyre Offset Tread 24 x 8 Black Part 3483 Element 4501048 or 348326 ×4

White 6 pieces

  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×2
  • Brick 2 x 3 White Part 3002 Element 6550133 or 300251 ×2
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×2

Green 1 piece

  • Brick 8 x 16 Green Part 4204 Element 4181116 or 420428 ×1

Trans-Clear 1 piece

  • Windscreen 2 x 4 x 2 Vertical Trans-Clear Part 4594 Element 6507908 or 6240532 ×1

[No Color/Any Color] 1 piece

  • Basic Figure Finger Puppet Female [Red, Black Hair] [No Color/Any Color] Part fig0001 ×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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