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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.

Imagination Set 3

Checking

103-2 Imagination Set 3

568 pieces in 31 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 485 pieces

  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×13
  • Brick 10 x 20 with Bottom Tubes in single row around edge, with '+' Cross Support Blue Part 700d ×4
  • Brick 2 x 2 without Inside Ridges Blue Part 3003a ×12
  • Brick 2 x 4 without Cross Supports Blue Part 3001a ×24
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×47
  • Brick 1 x 8 Red Part 3008 Element 300821 ×24
  • Brick 2 x 2 without Inside Ridges Red Part 3003a ×48
  • Brick 2 x 4 without Cross Supports Red Part 3001a ×97
  • Brick 1 x 2 Trans-Clear Part 3004 Element 4256587 or 300410 Also in White ×8
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 Also in Trans-Clear ×40
  • Brick 1 x 8 White Part 3008 Element 6550134 or 300801 ×24
  • Brick 2 x 2 without Inside Ridges White Part 3003a ×48
  • Brick 2 x 4 without Cross Supports White Part 3001a ×96

Wheels and Tyres 31 pieces

  • Tyre Smooth Old Style - Large Black Part 36 ×4
  • Tyre Smooth Old Style - Small Black Part 132a ×8
  • Wheel Old with 12 Studs Red Part 715 ×4
  • Wheel Old with 4 Studs Red Part 7039 Element 7039 ×7
  • Brick Special 2 x 4 with Wheel Holder Old, Clear Bottom, Red Inside White Part 7049bc01 ×8

Bricks Sloped 17 pieces

  • Brick Sloped 45° 2 x 2 Red Part 3039 Element 303921 ×2
  • Brick Sloped 45° 2 x 2 Double Red Part 3043 Element 304321 ×1
  • Brick Sloped 45° 2 x 4 Red Part 3037 Element 303721 ×12
  • Brick Sloped 45° 2 x 4 Double Red Part 3041 Element 4144003 or 304121 ×2

Plates 17 pieces

  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×9
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×8

Technic Gears 10 pieces

  • Gear Samsonite 35 Tooth Blue Part 743 ×2
  • Gear Samsonite 14 Tooth White Part 741 ×4
  • Technic Gear 21 Large Tooth Yellow Part 572 ×4

Bricks Round and Cones 4 pieces

  • Brick Round 1 x 1 Solid Stud White Part 3062a ×4

Windows and Doors 3 pieces

  • Door 1 x 2 x 3 Left with Hollow Studs, No Glass White Part 32b ×1
  • Window 1 x 2 x 2 Classic, Short Lip [with Glass] White Part 3081c01 Element 73594 ×2

Hinges, Arms and Turntables 1 piece

  • Turntable 4 x 4 - Old Type Complete - Faceted White Part 3404ac01 ×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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