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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.

KOM Moulding

Checking

4000005 KOM Moulding

315 pieces in 51 part and color combinations.

LEGO counts 317 pieces. This inventory comes from a separate parts catalog and lists 315; 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.

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Piece checklist

Plates 191 pieces

  • Plate 1 x 3 Black Part 3623 Element 362326 Also in Dark Bluish Gray ×1
  • Plate 6 x 12 Black Part 3028 Element 302826 ×4
  • Plate 1 x 1 Dark Bluish Gray Part 3024 Element 4210719 ×5
  • Plate 1 x 3 Dark Bluish Gray Part 3623 Element 4211133 Also in Black ×16
  • Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 ×14
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×2
  • Plate 1 x 1 Dark Red Part 3024 Element 4539114 or 4183901 ×35
  • Plate 1 x 2 Dark Red Part 3023 Element 4539097 or 4162582 ×5
  • Plate 1 x 2 Green Part 3023 Element 302328 ×8
  • Plate 1 x 3 Green Part 3623 Element 4107758 or 362328 ×6
  • Plate 2 x 3 Green Part 3021 Element 302128 ×5
  • Plate 1 x 3 Light Bluish Gray Part 3623 Element 4211429 or 3623194 ×4
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×4
  • Plate 1 x 1 Medium Blue Part 3024 Element 4179826 ×10
  • Plate 1 x 2 Medium Blue Part 3023 Element 4179825 or 4165460 ×3
  • Plate 1 x 1 Red Part 3024 Element 302421 ×1
  • Plate 2 x 8 Tan Part 3034 Element 4113988 or 303405 ×2
  • Plate 1 x 1 Trans-Clear Part 3024 Element 6513962 or 6252041 Also in White ×35
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 Also in Trans-Clear ×28
  • Plate 1 x 1 Yellow Part 3024 Element 302424 ×3

Bricks 42 pieces

  • Brick 2 x 3 Blue Part 3002 Element 300223 ×6
  • Brick 1 x 1 Dark Red Part 3005 Element 4541376 or 4209383 ×20
  • Brick 2 x 2 Corner Dark Red Part 2357 Element 4541379 or 4248771 ×6
  • Brick 1 x 1 Medium Blue Part 3005 Element 4179830 or 4165452 ×5
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×5

Tiles 34 pieces

  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 Also in Dark Bluish Gray ×10
  • Tile 1 x 8 with 'June 2012' Print Black Part 4162pr0025 Element 6031424 ×1
  • Tile 1 x 8 with 'KOM Moulding' Print Black Part 4162pr0024 Element 6031423 ×1
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×4
  • Tile 1 x 2 with Groove Dark Bluish Gray Part 3069b Element 4211052 Also in Black ×2
  • Tile 2 x 2 with Groove Dark Bluish Gray Part 3068b Element 4211055 ×6
  • Tile 1 x 1 with Groove Light Bluish Gray Part 3070b Element 4211415 ×2
  • Tile 1 x 2 with Groove Light Bluish Gray Part 3069b Element 4211414 ×4
  • Tile 1 x 3 Light Bluish Gray Part 63864 Element 4558169 ×2
  • Tile 1 x 1 with Groove Medium Blue Part 3070b Element 4527526 or 4235958 ×1
  • Tile 1 x 2 with Groove Yellow Part 3069b Element 306924 ×1

Plates Special 13 pieces

  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) Green Part 3794b Element 379428 ×6
  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) Light Bluish Gray Part 3794b ×3
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Light Bluish Gray Part 87580 Element 6126082 or 4565393 ×4

Tiles Special 10 pieces

  • Tile Special 1 x 1 with Clip with Rounded Tips Blue Part 12825 Element 6030715 or 4194424 ×4
  • Tile Special 1 x 1 with Clip with Rounded Tips Dark Bluish Gray Part 12825 Element 6030710 ×6

Plants & Trees 9 pieces

  • Plant, Flower, Plate Round 1 x 1 with 4 Petals Green Part 33291 Element 6170576 or 6138691 ×9

Plates Round Curved and Dishes 6 pieces

  • Plate Round Corner 3 x 3 Dark Bluish Gray Part 30357 Element 4212075 ×1
  • Plate Round 1 x 1 with Solid Stud Metallic Silver Part 6141 Element 51809301 or 6546105 ×2
  • Plate Round 1 x 1 with Solid Stud Reddish Brown Part 6141 Element 4216581 ×3

Bricks Round and Cones 3 pieces

  • Cone 1 x 1 [Top Groove] Green Part 59900 Element 4529239 ×3

Bricks Sloped 2 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Medium Blue Part 54200 Element 4565363 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Yellow Part 54200 Element 4504381 or 4283095 ×1

Technic Connectors 2 pieces

  • Technic Pin Connector Round [Slotted] Metallic Silver Part 62462 Element 6542283 or 6204673 ×2

Tubes and Hoses 2 pieces

  • Hose Rigid 3mm D. 20L / 16cm Blue Part 75c20 Element 6006106 or 4116886 ×2

Bricks Special 1 piece

  • Brick Special 1 x 1 with Headlight Light Bluish Gray Part 4070 Element 4211476 ×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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