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 Box

Checking

1400 Basic Box

173 pieces in 36 part and color combinations.

LEGO counts 166 pieces. This inventory comes from a separate parts catalog and lists 173; 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 147 pieces

  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×8
  • Brick 2 x 3 Black Part 3002 Element 300226 ×4
  • Brick 2 x 4 Black Part 3001 Element 300126 ×8
  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×10
  • Brick 2 x 3 Blue Part 3002 Element 300223 ×8
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×12
  • Brick 2 x 8 Blue Part 3007 Element 6037384 or 300723 ×2
  • Brick 4 x 12 Blue Part 4202 Element 4230930 or 4160093 ×1
  • Brick 8 x 16 Green Part 4204 Element 4181116 or 420428 ×1
  • Brick 2 x 10 Red Part 3006 Element 4617857 or 300621 ×2
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×10
  • Brick 2 x 3 Red Part 3002 Element 300271 or 300221 ×6
  • Brick 2 x 4 Red Part 3001 Element 300121 ×14
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×10
  • Brick 2 x 3 White Part 3002 Element 6550133 or 300251 ×6
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×10
  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×10
  • 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 ×6
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×14
  • Brick 2 x 4 with Smile and Frown Print on Opposite Sides Yellow Part 3001pr0043 Element 80141 ×3

Bars, Ladders and Fences 6 pieces

  • Fence Lattice 1 x 4 x 2 White Part 3185 Element 6628214 or 4587272 ×6

Windows and Doors 6 pieces

  • Door 1 x 4 x 5 Red Part 4131 ×1
  • Window 2 x 4 x 3 Pane Red Part 4133 ×2
  • Door Frame 2 x 4 x 5 Yellow Part 4130 Element 4217794 ×1
  • Window 2 x 4 x 3 Frame with Solid Studs Yellow Part 4132 Element 4520883 or 4218646 ×2

Plants & Trees 5 pieces

  • Plant, Flower 2 x 2 Leaves - Angular Green Part 4727 Element 472728 ×2
  • Plant, Fruit Tree Green Part 3470 Element 347028 ×1
  • Plant, Flower 2 x 2 - Round [Open Stud] Red Part 4728 Element 472821 ×1
  • Plant, Flower 2 x 2 - Round [Open Stud] Yellow Part 4728 Element 472824 ×1

Bricks Curved 4 pieces

  • Brick Arch 2 x 8 x 3 Red Part 4743 Element 474321 ×3
  • Brick Curved 2 x 4 x 2 Double [Plain] Yellow Part 4744 Element 6288274 or 474424 ×1

Minifigs 2 pieces

  • Basic Figure Finger Puppet Female [Red, Black Hair] [No Color/Any Color] Part fig0001 ×1
  • Basic Figure Finger Puppet Male [Blue, Brown Hair] [No Color/Any Color] Part fig0002 ×1

Wheels and Tyres 2 pieces

  • Brick Special 2 x 4 with Wheels, Freestyle Red Black Part 4180c02 ×2

Windscreens and Fuselage 1 piece

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