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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.

Ariel's Underwater Symphony

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30552 Ariel's Underwater Symphony

46 pieces in 29 part and color combinations, plus 1 minifigure.

The official piece count includes the 5 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

Black 8 pieces

  • Brick Curved 4 x 1 Double, No Studs Black Part 93273 Element 4613153 ×1
  • Brick Wedged 2 x 2 Facet Black Part 87620 Element 4584274 ×2
  • Plate 2 x 4 Black Part 3020 Element 302026 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Black Part 60897 Element 6330189 or 4617547 ×2
  • Tile 1 x 1 with Groove Black Part 3070b Element 307026 1 spare in the box ×2

Bright Green 5 pieces

  • Plant, Plate 1 x 1 Round with 3 Leaves Bright Green Part 32607 Element 6182261 ×4
  • Plant, Sea Grass Bright Green Part 30093 Element 6269992 or 6210746 ×1

Dark Purple 5 pieces

  • Panel 1 x 2 x 1 with Rounded Corners and 2 Sides Dark Purple Part 23969 Element 6248487 or 6134716 ×3
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Dark Purple Part 15573 Element 6092604 ×2

Pearl Gold 5 pieces

  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Pearl Gold Part 64644 Element 4538126 ×1
  • Headwear Accessory Crown / Tiara Pearl Gold Part 33322 Element 6605929 or 6173109 1 spare in the box ×1
  • Musical Instrument Saxophone Pearl Gold Part 13808 Element 6496956 or 6483420 ×1
  • Plate Special 1 x 2 [Side Handle Closed Ends] Pearl Gold Part 48336 Element 4585493 ×1
  • Tile Special 1 x 1 with Clip with Rounded Edges Pearl Gold Part 15712 Element 6262138 or 6071259 ×1

Trans-Light Blue 4 pieces

  • Dish 2 x 2 Inverted [Radar] Trans-Light Blue Part 4740 Element 6580378 or 6245307 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Light Blue Part 6141 Element 6514058 or 6240225 1 spare in the box ×3

White 4 pieces

  • Animal, Clam [Type 2 - Locking Edge on Inner Lip] White Part 18866 Element 6092203 ×1
  • Tile 2 x 2 with Musical Score Print White Part 3068bpr0138 Element 6001512 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove White Part 2412b Element 6601902 or 241201 ×2

Bright Light Orange 3 pieces

  • Tile, Star with Stud Holder, Pin Hole Bright Light Orange Part 11609 Element 6432033 or 6167776 1 spare in the box ×3

Medium Azure 3 pieces

  • Plate Round 4 x 4 with Pin Hole Medium Azure Part 60474 Element 6102828 ×1
  • Plate Round 6 x 6 with Hole Medium Azure Part 11213 Element 6029690 ×1
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Medium Azure Part 18674 Element 6136419 ×1

Trans-Dark Pink 3 pieces

  • Rock 1 x 1 Jewel / Gem 24 Facet Trans-Dark Pink Part 30153 Element 6513975 or 6247796 ×3

Dark Bluish Gray 2 pieces

  • Brick Round 1 x 1 Open Stud Dark Bluish Gray Part 3062b Element 4211090 ×2

Light Bluish Gray 2 pieces

  • Bar 3L Light Bluish Gray Part 87994 Element 6093527 or 6064033 1 spare in the box ×1
  • Brick Arch 1 x 4 Light Bluish Gray Part 3659 Element 4211435 ×1

Chrome Gold 1 piece

  • Minifig Ring 1 x 1 Chrome Gold Part 11010 Element 6009771 2 spares in the box ×1

Dark Pink 1 piece

  • Plant, Leaves 4 x 3 Dark Pink Part 2423 Element 6268816 or 6093480 ×1

Minifigures 1 figure

  • Ariel - Mermaid Form, Pink Top, Flower 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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