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LEGO Missing Piece Checker

Enter a set number, mark each piece found or missing, and leave with a list of what is missing, the element IDs LEGO asks for and links to buy the parts. It is free and needs no account. Rule out the usual hiding places first.

Freestyle Building Set

Checking

4131 Freestyle Building Set

71 pieces in 34 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.

Show

Piece checklist

Red 20 pieces

  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×6
  • Brick 2 x 3 Red Part 3002 Element 300271 or 300221 ×2
  • Brick 2 x 4 Red Part 3001 Element 300121 ×3
  • Brick 2 x 6 Red Part 2456 Element 4181138 or 245621 ×1
  • Brick Curved 2 x 3 Red Part 6215 Element 621521 ×2
  • Brick Curved 2 x 4 x 2 Double [Plain] Red Part 4744 Element 474421 ×1
  • Brick Curved 2 x 4 x 2 Double with Freckled Face Print Red Part 4744pr0002 Element 81780 ×1
  • Brick Curved 2 x 4 x 2 Triple, No Studs Red Part 6216 Element 621621 ×1
  • Door Frame 2 x 6 x 6 Freestyle Red Part 6235 Element 623521 or 75620 ×1
  • Plant, Flower 2 x 2 - Round [Open Stud] Red Part 4728 Element 472821 ×1
  • Window 2 x 6 x 6 Freestyle Red Part 6236 Element 623621 or 75621 ×1

Yellow 20 pieces

  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×6
  • Brick 2 x 2 with Eye with White Print on Two Sides, Offset Yellow Part 3003pr0053 Element 81910 ×2
  • Brick 2 x 3 Yellow Part 3002 Element 300224 ×2
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×3
  • Brick 2 x 6 Yellow Part 2456 Element 4181143 or 245624 ×1
  • Brick Curved 2 x 3 Yellow Part 6215 Element 621524 ×4
  • Brick Curved 2 x 4 x 2 Triple, No Studs Yellow Part 6216 Element 621624 ×1
  • Plant, Flower 2 x 2 - Round [Open Stud] Yellow Part 4728 Element 472824 ×1

White 14 pieces

  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×4
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×2
  • Door 1 x 6 x 6 Freestyle White Part 600 Element 623401 ×1
  • Fence Lattice 1 x 4 x 2 White Part 3185 Element 6628214 or 4587272 ×4
  • Plant, Flower 2 x 2 - Round [Open Stud] White Part 4728 Element 6047840 or 472801 ×1
  • Window 1 x 3 x 4 Pane for Window 2 x 6 x 6 Freestyle White Part 601 Element 623701 ×2

Blue 8 pieces

  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×4
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×2
  • Brick Curved 2 x 4 x 2 Double [Plain] Blue Part 4744 Element 474423 ×1
  • Plant, Flower 2 x 2 - Round [Open Stud] Blue Part 4728 Element 472823 ×1

Green 6 pieces

  • Brick 2 x 6 x 3 with Red, White, Blue Flowers Print Green Part 6213pr0002 Element 82341 ×1
  • Brick 4 x 12 Green Part 4202 Element 4537561 or 4250511 ×1
  • Plant, Flower 2 x 2 Leaves - Angular Green Part 4727 Element 472728 ×4

Black 3 pieces

  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×2
  • Brick Curved 2 x 4 x 2 Double with Yellow Girl Face Print Black Part 4744pr0001 Element 81781 ×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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