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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.

Sydney Opera House

Checking

21012 Sydney Opera House

270 pieces in 55 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

Tan 143 pieces

  • Bracket 1 x 2 - 2 x 2 Tan Part 44728 Element 6117975 or 6048857 ×2
  • Brick 2 x 2 Tan Part 3003 Element 4114306 or 300305 ×2
  • Brick 2 x 4 Tan Part 3001 Element 4114319 or 300105 ×3
  • Brick Curved 4 x 1 Double, No Studs Tan Part 93273 Element 4666611 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Tan Part 54200 Element 4516055 or 4278069 1 spare in the box ×21
  • Brick Special 1 x 4 with 4 Studs on One Side Tan Part 30414 Element 4201062 or 4177990 ×2
  • Plate 1 x 1 Tan Part 3024 Element 4159553 or 302405 1 spare in the box ×4
  • Plate 1 x 2 Tan Part 3023 Element 4113917 or 302305 ×3
  • Plate 1 x 3 Tan Part 3623 Element 4121921 or 362305 ×2
  • Plate 1 x 4 Tan Part 3710 Element 4113233 or 371005 ×2
  • Plate 1 x 6 Tan Part 3666 Element 4124067 or 366605 ×2
  • Plate 1 x 8 Tan Part 3460 Element 4114324 or 346005 ×2
  • Plate 2 x 2 Tan Part 3022 Element 4114084 or 302205 ×1
  • Plate 2 x 2 Corner Tan Part 2420 Element 4114077 or 242005 ×4
  • Plate 2 x 3 Tan Part 3021 Element 4118790 or 302105 ×1
  • Plate 2 x 8 Tan Part 3034 Element 4113988 or 303405 ×2
  • Plate 4 x 6 Tan Part 3032 Element 4114001 ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Tan Part 3794a Element 379405 ×31
  • Tile 1 x 1 with Groove Tan Part 3070b Element 4125253 1 spare in the box ×8
  • Tile 1 x 2 with Groove Tan Part 3069b Element 4114026 ×22
  • Tile 1 x 4 with Groove Tan Part 2431 Element 4550324 or 4542398 ×9
  • Tile 2 x 2 with Groove Tan Part 3068b Element 4185177 or 4114002 ×16

White 51 pieces

  • Brick Curved 2 x 2 with Lip, No Studs White Part 30602 Element 4195869 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) White Part 54200 Element 6550179 or 4504369 1 spare in the box ×9
  • Brick Sloped 30° 1 x 2 x 2/3 White Part 85984 Element 6550189 or 4547489 ×10
  • Brick Sloped 33° 2 x 2 Double White Part 3300 Element 4578606 or 330001 ×1
  • Brick Wedged, Curved 4 x 3 No Studs [Plain] White Part 64225 Element 6632143 or 4567878 ×4
  • Brick Wedged, Curved 4 x 4 No Top Studs White Part 47753 Element 6552136 or 6002767 ×4
  • Brick Wedged, Curved 6 x 4 Triple White Part 43712 Element 4179869 ×1
  • Hinge Brick 1 x 2 Base White Part 3937 Element 6619287 or 393701 ×10
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 1 spare in the box ×2
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×1
  • Plate 2 x 2 Corner White Part 2420 Element 6548254 or 242051 ×6
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×1
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×1

Trans-Brown 32 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Brown Part 54200 Element 6245263 or 4244368 1 spare in the box Also in Black ×18
  • Panel 1 x 2 x 1 [Rounded Corners] Trans-Brown Part 4865b Element 6514123 or 6246893 ×3
  • Plate 1 x 2 Trans-Brown Part 3023 Element 6514006 or 6240219 Also in Black ×11

Black 24 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 1 spare in the box Also in Trans-Brown ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 Also in Trans-Brown ×4
  • Plate 2 x 10 Black Part 3832 Element 383226 ×2
  • Plate 2 x 16 Black Part 4282 Element 428276 or 428226 ×3
  • Plate 2 x 4 Black Part 3020 Element 302026 ×2
  • Tile 1 x 6 with Groove Black Part 6636 Element 663626 ×8
  • Tile 1 x 8 with 'SYDNEY OPERA HOUSE' Print Black Part 4162pr0013 Element 6001533 ×1
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×1
  • Turntable 2 x 2 Plate, Base Black Part 3680 Element 368076 or 368026 ×2

Light Bluish Gray 15 pieces

  • Hinge Brick 1 x 2 Top Plate Thin Light Bluish Gray Part 3938 Element 4211470 ×6
  • Hinge Brick 2 x 2 Top Plate Thin Light Bluish Gray Part 6134 Element 4211881 ×4
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×2
  • Plate 2 x 8 Light Bluish Gray Part 3034 Element 4211406 ×1
  • Turntable 2 x 2 Plate - Top Light Bluish Gray Part 3679 Element 4540203 or 4495467 ×2

Dark Bluish Gray 4 pieces

  • Plate 4 x 6 Dark Bluish Gray Part 3032 Element 4211115 or 3032199 ×2
  • Plate 6 x 14 Dark Bluish Gray Part 3456 Element 4210720 ×2

Dark Tan 1 piece

  • Plate Special 1 x 2 with Door Rail Dark Tan Part 32028 Element 4616711 or 4267875 ×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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