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The Workshop Sheet 10 of 22

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.

The Coral Reef

Checking

21164 The Coral Reef

85 pieces in 54 part and color combinations, plus 2 minifigures.

The official piece count includes the 7 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

Plates 28 pieces

  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×1
  • Plate 1 x 1 Bright Light Orange Part 3024 Element 6073040 or 6028740 1 spare in the box ×1
  • Plate 1 x 2 Bright Light Orange Part 3023 Element 6028736 or 4645043 ×3
  • Plate 2 x 2 Bright Light Orange Part 3022 Element 6003033 or 4645047 ×1
  • Plate 1 x 2 Bright Pink Part 3023 Element 4654128 or 4245303 ×2
  • Plate 1 x 2 Dark Azure Part 3023 Element 4653988 ×2
  • Plate 6 x 6 Dark Bluish Gray Part 3958 Element 4211134 ×1
  • Plate 1 x 2 Dark Pink Part 3023 Element 6057387 or 4245302 ×2
  • Plate 1 x 2 Medium Azure Part 3023 Element 6603337 or 6097419 ×2
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×2
  • Plate 2 x 6 Red Part 3795 Element 379521 ×1
  • Plate 1 x 2 Tan Part 3023 Element 4113917 or 302305 ×2
  • Plate 2 x 2 Tan Part 3022 Element 4114084 or 302205 ×1
  • Plate 2 x 4 Tan Part 3020 Element 4114309 or 302005 ×2
  • Plate 6 x 6 Tan Part 3958 Element 4125217 ×2
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×2
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×1

Plants & Trees 12 pieces

  • Plant, Flower 2 x 2 Leaves - Angular Bright Green Part 4727 Element 4143562 ×2
  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Bright Green Part 24866 Element 6526150 or 6206150 1 spare in the box ×4
  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Dark Pink Part 24866 Element 6209679 1 spare in the box ×2
  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Light Aqua Part 24866 Element 6251854 1 spare in the box ×2
  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Yellow Part 24866 Element 6299813 1 spare in the box ×2

Bricks 10 pieces

  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×1
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×1
  • Brick 2 x 2 Dark Bluish Gray Part 3003 Element 4211060 ×1
  • Brick 1 x 1 Olive Green Part 3005 Element 6058242 or 6031135 ×2
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×1
  • Brick 2 x 4 Red Part 3001 Element 300121 ×1
  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×1
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×2

Bricks Round and Cones 7 pieces

  • Brick Round 1 x 1 Open Stud Lime Part 3062b Element 4212454 ×4
  • Brick Round 1 x 1 Open Stud Trans-Clear Part 3062b Element 6514232 or 6223655 ×2
  • Brick Round 2 x 2 with Axle Hole Yellow Part 3941 Element 614324 or 394124 ×1

Bricks Sloped 6 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Medium Blue Part 54200 Element 4565363 1 spare in the box ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Tan Part 54200 Element 4516055 or 4278069 1 spare in the box ×2

Plates Special 5 pieces

  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Blue Part 87580 Element 6126049 or 4565319 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Red Part 87580 Element 6126048 or 4581308 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Tan Part 15573 Element 6092587 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Yellow Part 87580 Element 6126050 or 4565386 ×1

Bricks Special 3 pieces

  • Brick Special 1 x 1 Studs on 4 Sides White Part 4733 Element 4111971 or 473301 ×1
  • Brick Special 1 x 2 x 1 2/3 with 8 Studs on 3 Sides White Part 67329 Element 6552182 or 6312480 ×2

Tiles 3 pieces

  • Tile 1 x 1 with Pixelated Face, Black Eyes Print Tan Part 3070bpr0242 Element 6335322 1 spare in the box ×1
  • Tile 2 x 2 with Pixelated Face, Black Eyes Print Tan Part 3068bpr0486 Element 6335321 ×1
  • Tile 2 x 4 with Groove Tan Part 87079 Element 6122047 or 4610209 ×1

Containers 2 pieces

  • Treasure Chest Bottom with Rear Slots, No Groove Medium Nougat Part 4738c Element 6102984 ×1
  • Treasure Chest Lid [Thick Hinge] Medium Nougat Part 4739a Element 6254218 or 6167286 ×1

Technic Bricks 2 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×2

Animals / Creatures 1 piece

  • Animal, Fish [Hollow Stud Mouth] Orange Part 64648 Element 4623481 ×1

Minifig Shields, Weapons, & Tools 1 piece

  • Weapon Sword Blocky Pearl Gold Part 18787 Element 6093621 ×1

Plates Round Curved and Dishes 1 piece

  • Plate Round 1 x 1 with Solid Stud Dark Turquoise Part 6141 Element 6325978 1 spare in the box ×1

Technic Axles 1 piece

  • Technic Axle 5 Yellow Part 32073 Element 6130008 ×1

Technic Bushes 1 piece

  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×1

Technic Connectors 1 piece

  • Technic Axle Connector Double Flexible [Rubber] Black Part 45590 Element 4198367 ×1

Tiles Round and Curved 1 piece

  • Tile Round 1 x 1 with Pixelated Nautilus/Ammonite Print Tan Part 98138pr0088 Element 6335323 1 spare in the box ×1

Minifigures 2 figures

  • Alex - Bright Green Helmet Minifigure, checked as a whole figure ×1
  • Zombie, Sand Green Head (Drowned) 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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