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.

Flying Jelly Sub

Checking

JELLYFISH Flying Jelly Sub

38 pieces in 18 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

Black 8 pieces

  • Bar 1 x 3 [Clip / Anti-Stud] Black Part 4735 Element 4141580 or 473576 ×2
  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×1
  • Brick Special 1 x 2 x 2/3 with Studs on Sides Black Part 4595 Element 6681661 or 4523339 ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate Special 2 x 2 with Bar Frame Octagonal, Reinforced, Completely Round Studs Black Part 75937 Element 6018805 ×1

Light Bluish Gray 8 pieces

  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Light Bluish Gray Part 61252 Element 6335378 or 4541978 ×6
  • Tile Special 1 x 1 with Clip with Rounded Edges Light Bluish Gray Part 15712 Element 6308012 or 6071229 ×2

Sand Blue 8 pieces

  • Brick Curved 2 x 1 No Studs [1/2 Bow] Sand Blue Part 11477 Element 6179812 ×6
  • Plate Round 4 x 4 with Pin Hole Sand Blue Part 60474 Element 6173995 ×2

Dark Bluish Gray 7 pieces

  • Bracket 1 x 2 - 1 x 2 Inverted Dark Bluish Gray Part 99780 Element 6000606 ×2
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Bluish Gray Part 4032a Element 4211042 ×1
  • Plate Special 1 x 2 Side Handle [Free Ends] Dark Bluish Gray Part 2540 Element 4210660 ×3

Yellow 3 pieces

  • Dish 2 x 2 Inverted [Radar] Yellow Part 4740 Element 4169960 or 4107622 ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Yellow Part 4032a Element 403224 ×1

Trans-Orange 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Orange Part 6141 Element 6514059 or 6240227 ×2

Trans-Brown 1 piece

  • Dome Hemisphere 4 x 4 Trans-Brown Part 86500 Element 6252259 or 6079676 ×1

White 1 piece

  • Brick Curved 2 x 2 x 2/3 White Part 15068 Element 6552147 or 6047220 ×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.