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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.

Mia's Play Cube

Checking

41403 Mia's Play Cube

36 pieces in 26 part and color combinations, plus 1 minifigure.

LEGO counts 36 pieces. This inventory comes from a separate parts catalog and lists 40, including the 4 parts inside the minifigures; 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.

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Piece checklist

Bricks 7 pieces

  • Brick 1 x 2 Dark Azure Part 3004 Element 6004943 ×7

Plates Special 7 pieces

  • Bracket 2 x 6 - 1 x 6 Inverted Bright Pink Part 64570 Element 6288330 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Light Aqua Part 15573 Element 6097303 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Light Aqua Part 87580 Element 6251841 ×1
  • Plate Special Round 1 x 1 with Hollow Stud and Horizontal Bar 1L Light Bluish Gray Part 32828 Element 6227897 1 spare in the box ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] White Part 60897 Element 6330191 or 4613256 ×2

Minifig Accessories 4 pieces

  • Equipment Medical Syringe Bright Light Blue Part 87989 Element 6003298 1 spare in the box ×1
  • Equipment Cutlery - Spoon, Rounded Bottom Flat Silver Part 34173 Element 6460705 or 6196796 1 spare in the box ×1
  • Equipment Baby Bottle with Handle Light Aqua Part 18855 Element 6412881 or 6102882 ×1
  • Equipment Hose Nozzle / Gun with Side String Hole Simplified Light Bluish Gray Part 60849 Element 6641461 or 4515897 1 spare in the box ×1

Plates Round Curved and Dishes 4 pieces

  • Dish 2 x 2 Inverted [Radar] Trans-Neon Green Part 4740 Element 6245297 or 4112517 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 1 spare in the box ×2
  • Plate Round 1 x 1 with Open Stud White Part 85861 Element 6168642 or 4547649 1 spare in the box ×1

Plates 3 pieces

  • Plate 1 x 2 Dark Azure Part 3023 Element 4653988 ×2
  • Plate 1 x 2 Light Aqua Part 3023 Element 6146701 or 6015054 ×1

Tiles Special 3 pieces

  • Tile Special Round 1 x 1 with Hollow Bar Dark Azure Part 20482 Element 6223733 1 spare in the box ×1
  • Tile Special 1 x 2 with Handle Light Bluish Gray Part 2432 Element 4211357 ×1
  • Tile Special Round 1 x 1 with Hollow Bar White Part 20482 Element 6186681 or 6178492 1 spare in the box ×1

Containers 2 pieces

  • Pod, Square 3 x 8 x 6 2/3 [Male] Glitter Trans-Purple Part 64462 Element 6286239 ×1
  • Pod, Square 3 x 8 x 6 2/3 [Female] Lime Part 64454 Element 6288313 ×1

Animals / Creatures 1 piece

  • Animal, Rabbit / Bunny, Baby Sitting with Black Eyes and Lavender Nose Print [No Color/Any Color] Part 18852pr0004 ×1

Bricks Round and Cones 1 piece

  • Cone 1 x 1 [Top Groove] Trans-Green Part 59900 Element 6301316 or 4567333 ×1

Bricks Sloped 1 piece

  • Brick Sloped 30° 1 x 2 x 2/3 Light Aqua Part 85984 Element 4616211 ×1

Flags, Banners and Signs 1 piece

  • Road Sign Clip-on 2 x 2 Square [Thick Open O Clip] Dark Bluish Gray Part 15210 Element 6315300 or 6063616 ×1

Panels 1 piece

  • Panel 1 x 2 x 1 with Rounded Corners and 2 Sides White Part 23969 Element 6248490 or 6135529 ×1

Stickers 1 piece

  • Sticker Sheet for Set 41403-1 [No Color/Any Color] Part 66284 Element 6287409 ×1

Minifigures 1 figure

  • Mia - White Jacket, Dark Purple Skirt, Veterinarian 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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