Free tool

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.

5x Baby Seahorse

Checking

EG00169 5x Baby Seahorse

170 pieces in 21 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

Bright Light Blue 60 pieces

  • Bracket 1 x 1 - 1 x 1 Bright Light Blue Part 36841 Element 6383096 ×10
  • Brick Curved 2 x 1 with Inverted Cutout Bright Light Blue Part 78666 Element 6383091 ×10
  • Brick Curved 2 x 2 x 2/3 Bright Light Blue Part 15068 Element 6372227 or 6132420 ×5
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Bright Light Blue Part 54200 Element 6372124 ×5
  • Brick Sloped 30° 1 x 2 x 2/3 Bright Light Blue Part 85984 Element 6550232 or 6133293 ×5
  • Plate 1 x 2 Bright Light Blue Part 3023 Element 6469765 or 6362254 ×15
  • Plate 2 x 2 Bright Light Blue Part 3022 Element 6099373 or 4539745 ×10

White 45 pieces

  • Bracket 1 x 2 - 2 x 2 Inverted White Part 99207 Element 6552151 or 6548279 ×5
  • Brick Curved 1 x 2 x 1 with Curved Top White Part 5841 Element 6552217 or 6519988 ×10
  • Brick Special 1 x 1 with Studs on 2 Adjacent Sides White Part 26604 Element 6224811 ×10
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) White Part 15573 Element 6550152 or 6051511 ×5
  • Plate Special 1 x 2 with Handle on End [Closed Ends] White Part 60478 Element 6552131 or 4515364 ×5
  • Plate Special 2 x 4 with Groove and Two Center Studs (Jumper) White Part 65509 Element 6550181 or 6315024 ×5
  • Tile Special 1 x 1 with Clip with Rounded Edges White Part 15712 Element 6348055 or 6054551 ×5

Trans-Light Blue 35 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Light Blue Part 54200 Element 6245277 or 6073445 ×15
  • Plate 1 x 1 Trans-Light Blue Part 3024 Element 6513964 or 6252043 ×10
  • Plate Special 2 x 2 with Double Inverted Curve, 1 Stud Trans-Light Blue Part 4190 Element 6527412 ×10

Black 10 pieces

  • Tile Round 1 x 1 with White Dot/Circle/Eye Print Black Part 98138pr0107 Element 6284072 or 6253831 ×10

Light Aqua 10 pieces

  • Brick 1 x 2 Light Aqua Part 3004 Element 6022032 ×5
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Half Hollow Anti-stud] - Updated Version Light Aqua Part 4304 Element 6470182 ×5

Light Bluish Gray 10 pieces

  • Plate Special 1 x 1 x 2/3 Half Round with Side Stud Light Bluish Gray Part 3386 Element 6448793 ×10

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.