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.

Raptor Ambush

Checking

121903 Raptor Ambush

33 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

Reddish Brown 7 pieces

  • Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] Reddish Brown Part 15672 Element 6075287 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Reddish Brown Part 87580 Element 4565394 ×3
  • Technic Brick 1 x 1 with Pin Hole Reddish Brown Part 6541 Element 4620075 or 4528461 ×2

Green 5 pieces

  • Plant, Leaves 4 x 3 Green Part 2423 Element 6268814 or 242328 ×2
  • Plate Special 4 x 6, Studs on 3 Edges Green Part 6180 Element 6214164 or 618028 ×1
  • Technic Beam 1 x 3 Thick Green Part 32523 Element 6007973 or 4158868 ×2

Bright Green 4 pieces

  • Plant, Carrot Top Bright Green Part 33183 Element 4119479 2 spares in the box ×4

Dark Orange 4 pieces

  • Brick Round 1 x 1 Open Stud Dark Orange Part 3062b Element 6074890 or 4195663 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Orange Part 54200 Element 6104342 or 6087167 ×2

Black 3 pieces

  • Brick Special 1 x 4 with Groove Black Part 2653 Element 265326 ×2
  • Plate Special 1 x 4 with 2 Studs with Groove [New Underside] Black Part 41740 Element 6254045 ×1

Light Bluish Gray 3 pieces

  • Brick Sloped 45° 2 x 1 Triple with Inside Stud Holder Light Bluish Gray Part 15571 Element 6075075 ×1
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 ×2

Blue 2 pieces

  • Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 ×2

Lime 2 pieces

  • Plant, Leaves 4 x 3 Lime Part 2423 Element 6268818 or 6094069 ×2

Yellow 2 pieces

  • Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper) Yellow Part 34103 Element 6228602 ×1
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Solid Anti-stud] Yellow Part 99206 Element 6248833 or 6207936 ×1

Sand Green 1 piece

  • Animal, Dinosaur, Raptor, Baby with Dark Blue Stripes Sand Green Part 37829pr0001 Element 6227089 ×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.