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The Workshop Sheet 10 of 19

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.

Basic Building Set

Checking

1679 Basic Building Set

43 pieces in 23 part and color combinations.

LEGO counts 39 pieces. This inventory comes from a separate parts catalog and lists 43; 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.

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.

  • Brick 1 x 2 White ×2 Trans-Clear ×2 Trans-Clear is see-through: hold the piece up to a light.
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Piece checklist

Bricks 19 pieces

  • Brick 1 x 1 Red Part 3005 Element 300521 ×2
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×4
  • Brick 1 x 4 Red Part 3010 Element 301021 ×2
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×1
  • Brick 2 x 4 Red Part 3001 Element 300121 ×1
  • Brick 1 x 2 Trans-Clear Part 3004 Element 4256587 or 300410 Also in White ×2
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 Also in Trans-Clear ×2
  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×2
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×2
  • Brick 1 x 2 with Red / Black Three-Dot Face Print Yellow Part 3004pr9973 Element 4226108 or 81053 ×1

Plates 8 pieces

  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×1
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×1
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×2
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×2
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×2

Bricks Sloped 6 pieces

  • Brick Sloped 45° 2 x 2 Red Part 3039 Element 303921 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Red Part 3660 Element 366021 ×2
  • Brick Sloped 45° 2 x 2 Trans-Clear Part 3039 Element 6514100 or 6244886 ×2

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

Bricks Round and Cones 2 pieces

  • Brick Round 1 x 1 Open Stud Trans-Dark Blue Part 3062b Element 6514233 or 6238044 ×2

Plates Special 1 piece

  • Plate Special 2 x 2 with Wheel Holder White Part 4488 Element 448801 ×1

Transportation - Sea and Air 1 piece

  • Propeller 3 Blade Small Black Part 2421 Element 6170693 or 4289255 ×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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