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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.

Ariel's Undersea Castle

Checking

10922 Ariel's Undersea Castle

35 pieces in 27 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.

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Piece checklist

Duplo, Quatro and Primo 34 pieces

  • Duplo Brick Round 2 x 2 x 2 with Shell and Bubbles Print Bright Light Yellow Part 98225pr0008 Element 6325183 ×1
  • Duplo Disk with Xylophone and Starfish Print Bright Light Yellow Part 27372pr0009 Element 6302799 ×1
  • Duplo Plate 2 x 4 Bright Light Yellow Part 40666 Element 6303200 ×2
  • Duplo Plate Round 4 x 8 Semi-Circle Bright Light Yellow Part 29304 Element 6303202 ×1
  • Duplo Plant, Flower with 1 Top Stud Coral Part 6510 Element 6294209 ×2
  • Duplo Plant, Flower with 1 Top Stud Dark Pink Part 6510 Element 4224735 or 4217970 ×1
  • Duplo Plate Round 4 x 8 Semi-Circle Dark Pink Part 29304 Element 6213427 ×2
  • Duplo Support / Umbrella Stand with Square Base (fits 92002) Dark Pink Part 93353 Element 6182022 ×1
  • Duplo Brick 2 x 2 Glitter Trans-Light Blue Part 3437 Element 6507903 or 6257958 ×2
  • Duplo Plate 2 x 4 Light Aqua Part 40666 Element 6296140 ×2
  • Duplo Brick 2 x 3 Medium Azure Part 87084 Element 6138409 ×1
  • Duplo Brick 2 x 3 with Curved Bottom Medium Azure Part 98252 Element 6167834 ×2
  • Duplo Brick 2 x 4 x 2 Arch with Seaweed, Starfish, and Bubbles Print Medium Azure Part 11198pr0004 Element 6302797 ×1
  • Duplo Brush Medium Azure Part 24807 Element 6464781 or 6138094 ×1
  • Duplo Building Roof Spire 3 x 3 x 3 Medium Azure Part 16375 Element 6082949 or 6018602 ×1
  • Duplo Playground Slide Curved Right 90° Medium Azure Part 35088 Element 6215346 ×1
  • Duplo Turntable 2 x 2 Medium Azure Part 10888 Element 6303199 ×1
  • Duplo Turntable 4 x 4 Base, Flush Surface Medium Azure Part 92005 Element 6303204 or 6136354 ×1
  • Duplo Treasure Chest Opening 2 x 3 x 3 with Detailed Lid Ends Pearl Gold Part 11249 Element 6034352 ×1
  • Duplo Plant / Tree / Seaweed Trans-Green Part 43852 Element 6259183 ×1
  • Duplo Brick 1 x 2 x 2 with Bottom Tube Trans-Light Blue Part 76371 Element 6514047 or 6210314 ×3
  • Duplo Brick 1 x 2 x 2 with Three Singing Fish Print Trans-Light Blue Part 76371pr0179 Element 6302800 ×1
  • Duplo Brick 2 x 2 Trans-Light Blue Part 3437 Element 6507900 or 6201835 ×1
  • Duplo Animal Fish with Large Eyes and Stripes on Top Print (Flounder / Fabius) Yellow Part 11374pr0001 Element 6476064 or 6303584 ×1
  • Duplo Plate 4 x 8 Yellow Part 4672 Element 6465940 or 6278979 ×1
  • Duplo Plate Round 4 x 4 Yellow Part 98222 Element 6292855 ×1

Non-Buildable Figures (Duplo, Fabuland, etc) 1 piece

  • Duplo Figure with Hair Swept Right Red, Azure Mermaid Legs (Ariel) Light Nougat Part 65992 Element 6303492 ×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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