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.

Rainbow Fish

Checking

40246 Rainbow Fish

32 pieces in 22 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.

Show

Piece checklist

Plates 11 pieces

  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×2
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×1
  • Plate 1 x 2 Lime Part 3023 Element 4164037 or 4122439 ×2
  • Plate 2 x 6 Lime Part 3795 Element 4621548 or 4563344 ×1
  • Plate 2 x 4 Medium Azure Part 3020 Element 6603317 or 6013826 ×1
  • Plate 1 x 2 Orange Part 3023 Element 4177932 or 4163009 ×2
  • Plate 2 x 3 Yellow Part 3021 Element 302124 ×2

Plates Special 7 pieces

  • Plate Special 1 x 2 [Side Handle Closed Ends] Blue Part 48336 Element 4514398 or 4247103 ×1
  • Plate Special 1 x 2 with Clip Horizontal on End Blue Part 63868 Element 6354661 or 4568990 ×2
  • Plate Special 1 x 2 with Handles on Ends Bright Light Orange Part 18649 Element 6174004 or 6105766 ×1
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Orange Part 61252 Element 6347295 or 4593773 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Yellow Part 15573 Element 6092583 ×1

Bricks Curved 6 pieces

  • Brick Curved 3 x 1 No Studs Lime Part 50950 Element 4537928 ×1
  • Brick Curved 3 x 1 No Studs Medium Azure Part 50950 Element 6035598 ×2
  • Brick Curved 4 x 2 No Studs Orange Part 93606 Element 6054529 ×1
  • Brick Curved 2 x 2 x 2/3 Yellow Part 15068 Element 6079007 ×2

Bricks Sloped 4 pieces

  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Medium Azure Part 3660 Element 6070756 ×1
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Orange Part 3747b Element 4500468 ×1
  • Brick Sloped 30° 1 x 2 x 2/3 Yellow Part 85984 Element 4550348 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Yellow Part 3660 Element 366024 ×1

Bricks Special 2 pieces

  • Brick Special 1 x 1 with Stud on 1 Side Bright Light Orange Part 87087 Element 6092035 ×2

Tiles Round and Curved 2 pieces

  • Tile Round 1 x 1 with Offset Black Eye Print White Part 98138pr0008 Element 6284599 or 6029156 1 spare in the box ×2

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.