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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.

The Iron Golem

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21123 The Iron Golem

166 pieces in 57 part and color combinations, plus 3 minifigures.

The official piece count includes the 42 parts inside the set's minifigures, which this inventory lists separately. 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.

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Piece checklist

Light Bluish Gray 53 pieces

  • Brick 2 x 2 Light Bluish Gray Part 3003 Element 4211387 ×5
  • Brick 2 x 4 Light Bluish Gray Part 3001 Element 4211385 ×4
  • Brick 2 x 6 Light Bluish Gray Part 2456 Element 4274668 or 4211795 ×2
  • Plate 1 x 1 Light Bluish Gray Part 3024 Element 4211399 1 spare in the box ×4
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×6
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×5
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×6
  • Plate 2 x 6 Light Bluish Gray Part 3795 Element 4211452 or 3795194 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Light Bluish Gray Part 87580 Element 6126082 or 4565393 ×16
  • Technic Brick 1 x 2 [2 Pin Holes] Light Bluish Gray Part 32000 Element 4211541 ×4

Reddish Brown 32 pieces

  • Brick 1 x 2 Reddish Brown Part 3004 Element 4613963 or 4211149 ×3
  • Brick 1 x 4 Reddish Brown Part 3010 Element 4211225 ×1
  • Brick 2 x 10 Reddish Brown Part 3006 Element 6096716 or 4617863 ×1
  • Brick 2 x 2 Reddish Brown Part 3003 Element 4211210 ×10
  • Brick 2 x 4 Reddish Brown Part 3001 Element 4211201 ×8
  • Brick 2 x 6 Reddish Brown Part 2456 Element 4286200 or 4216615 ×2
  • Plant, Flower, Plate Round 1 x 1 with 4 Petals Reddish Brown Part 33291 Element 6170302 or 4623429 1 spare in the box ×2
  • Plate 1 x 1 Reddish Brown Part 3024 Element 4221744 1 spare in the box ×2
  • Plate 1 x 3 Reddish Brown Part 3623 Element 4211152 ×1
  • Tile 1 x 6 with Groove Reddish Brown Part 6636 Element 4211204 ×2

Dark Bluish Gray 22 pieces

  • Brick 2 x 2 Dark Bluish Gray Part 3003 Element 4211060 ×4
  • Brick 2 x 2 with Light Bluish Gray and Black Pixelated Furnace Print Dark Bluish Gray Part 3003pr0035 Element 6097032 ×1
  • Brick Special 1 x 2 with Pin Dark Bluish Gray Part 2458 Element 4211087 ×2
  • Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 ×2
  • Plate 2 x 8 Dark Bluish Gray Part 3034 Element 4210997 ×1
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Dark Bluish Gray Part 2654 Element 4613980 or 4278274 ×2
  • Plate Special 1 x 2 with Pin Hole on Top Dark Bluish Gray Part 11458 Element 6019987 ×4
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Bluish Gray Part 87580 Element 6126083 or 4565322 ×1
  • Tile 1 x 2 with Groove Dark Bluish Gray Part 3069b Element 4211052 ×3
  • Tile 1 x 4 with Groove Dark Bluish Gray Part 2431 Element 4211053 ×2

Black 14 pieces

  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×8
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×3
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Solid Anti-stud] Black Part 99206 Element 6052126 ×1
  • Tile 1 x 1 with Groove Black Part 3070b Element 307026 1 spare in the box ×2

Green 7 pieces

  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Green Part 87580 Element 6389692 or 4565321 ×7

Tan 7 pieces

  • Brick Special 1 x 2 with 2 Studs on 1 Side Tan Part 11211 Element 6024495 ×1
  • Plate Round 1 x 1 with Solid Stud Tan Part 6141 Element 4161734 or 614105 1 spare in the box ×4
  • Technic Pin Long without Friction Ridges Tan Part 32556 ×2

Bright Green 4 pieces

  • Plant, Flower 2 x 2 Leaves - Angular Bright Green Part 4727 Element 4143562 ×1
  • Plate 6 x 12 Bright Green Part 3028 Element 4541414 ×3

Bright Pink 4 pieces

  • Brick Special 1 x 2 with Groove Bright Pink Part 4216 Element 6291009 or 6103000 ×2
  • Minifig Head Special, Cube with Rear Ledge, Pixelated Black, White and Dark Red Face, White Spots on Snout Print (Pig) Bright Pink Part 19727pr0009 Element 6290525 or 6162247 ×1
  • Plate 1 x 2 Bright Pink Part 3023 Element 4654128 or 4245303 ×1

Medium Nougat 4 pieces

  • Brick 1 x 1 Medium Nougat Part 3005 Element 6057986 or 4569624 ×1
  • Brick 1 x 2 with Reddish Brown and Dark Brown Lines Print Medium Nougat Part 3004pr0014 Element 6097024 ×2
  • Tile 2 x 2 with Dark Brown Minecraft Grid Print (Crafting Table) Medium Nougat Part 3068bpr0236 Element 6097003 ×1

White 4 pieces

  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×4

Trans-Dark Blue 3 pieces

  • Brick 2 x 2 without Inside Ridges Trans-Dark Blue Part 6223 Element 6514091 or 6238043 ×2
  • Brick Sloped 45° 2 x 2 Trans-Dark Blue Part 3039 Element 6514101 or 6244887 ×1

Trans-Orange 3 pieces

  • Plate 1 x 1 Trans-Orange Part 3024 Element 6513961 or 6252040 1 spare in the box ×3

Trans-Yellow 3 pieces

  • Plate 1 x 1 Trans-Yellow Part 3024 Element 6513966 or 6252045 1 spare in the box ×3

Blue 2 pieces

  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×1
  • Plate 4 x 4 Blue Part 3031 Element 4243815 or 303123 ×1

Dark Brown 1 piece

  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Dark Brown Part 64644 Element 4538950 ×1

Medium Azure 1 piece

  • Tool Pickaxe Blocky, Double Medium Azure Part 18789 Element 6093629 ×1

Orange 1 piece

  • Minifig Head Special, Cube with Pumpkin Jack O' Lantern Print Orange Part 19729pr0005 Element 6546772 or 6162469 ×1

Red 1 piece

  • Plant, Flower, Plate Round 1 x 1 with 4 Petals Red Part 33291 Element 6163983 or 6035617 1 spare in the box ×1

Minifigures 3 figures

  • Alex Minifigure, checked as a whole figure ×1
  • Zombie Minifigure, checked as a whole figure ×1
  • Iron Golem Minifigure, checked as a whole figure ×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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