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.

Basic Building Set

Checking

315 Basic Building Set

62 pieces in 27 part and color combinations.

LEGO counts 59 pieces. This inventory comes from a separate parts catalog and lists 62; 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

Bricks 51 pieces

  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×2
  • Brick 2 x 4 Black Part 3001 Element 300126 ×2
  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×6
  • Brick 2 x 3 Blue Part 3002 Element 300223 ×2
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×4
  • Brick 4 x 12 Green Part 4202 Element 4537561 or 4250511 ×1
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×8
  • Brick 2 x 3 Red Part 3002 Element 300271 or 300221 ×2
  • Brick 2 x 4 Red Part 3001 Element 300121 ×4
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×4
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×3
  • Brick 2 x 6 White Part 2456 Element 6552122 or 4249698 ×1
  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×4
  • Brick 2 x 2 with Eye [No Pupils] Print on Two Sides, Offset Yellow Part 3003pr0052 ×2
  • Brick 2 x 3 Yellow Part 3002 Element 300224 ×2
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×2
  • Brick 2 x 4 with Smile and Frown Print on Opposite Sides Yellow Part 3001pr0043 Element 80141 ×1
  • Brick 2 x 6 Yellow Part 2456 Element 4181143 or 245624 ×1

Plants & Trees 4 pieces

  • Plant, Flower 2 x 2 - Round [Open Stud] Blue Part 4728 Element 472823 ×2
  • Plant, Flower 2 x 2 Leaves - Angular Green Part 4727 Element 472728 ×2

Windows and Doors 4 pieces

  • Door Frame 2 x 4 x 5 Red Part 4130 ×1
  • Window 2 x 4 x 3 Frame with Solid Studs Red Part 4132 Element 413221 ×1
  • Door 1 x 4 x 5 White Part 4131 ×1
  • Window 2 x 4 x 3 Pane White Part 4133 Element 4113220 or 413301 ×1

Bricks Curved 2 pieces

  • Brick Curved 2 x 4 x 2 Double [Plain] Red Part 4744 Element 474421 ×1
  • Brick Arch 2 x 8 x 3 Yellow Part 4743 Element 474324 ×1

Tools 1 piece

  • Brick Separator v1.0 Dark Gray Part 6007 Element 600727 ×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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