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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.

Mini Basic Set

Checking

1905 Mini Basic Set

36 pieces in 21 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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Bricks 28 pieces

  • Brick 1 x 2 Black Part 3004 Element 300426 ×2
  • Brick 2 x 2 without Inside Ridges Black Part 3003a ×2
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×2
  • Brick 2 x 2 without Inside Ridges Blue Part 3003a ×2
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×1
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×4
  • Brick 2 x 2 without Inside Ridges Red Part 3003a ×2
  • Brick 2 x 4 Red Part 3001 Element 300121 ×2
  • Brick 2 x 8 Red Part 3007 Element 6036408 or 300721 ×1
  • Brick 1 x 2 Trans-Clear Part 3004 Element 4256587 or 300410 Also in White ×1
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 Also in Trans-Clear ×1
  • Brick 2 x 2 without Inside Ridges White Part 3003a ×1
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×1
  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×2
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×2
  • Brick 2 x 2 with Eye [No Pupils] Print on Two Sides, Offset Yellow Part 3003pr0052 ×1
  • Brick 2 x 2 without Inside Ridges Yellow Part 3003a ×1

Wheels and Tyres 6 pieces

  • Brick Special 2 x 2 [Red Wheels for Single Tyre] Black Part 3137c01 ×2
  • Tyre 15 x 6 Offset Tread Small Black Part 3641 Element 4501046 or 364126 ×4

Plates 2 pieces

  • Plate 2 x 3 Red Part 3021 Element 302121 ×1
  • Plate 2 x 4 Red Part 3020 Element 302021 ×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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