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.

Cat

Checking

LMG002 Cat

10 pieces in 8 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

Black 9 pieces

  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×1
  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×2
  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×1
  • Plate 1 x 1 Black Part 3024 Element 302426 ×1
  • Plate 1 x 3 Black Part 3623 Element 362326 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×1
  • Tile 1 x 1 with Groove Black Part 3070b Element 307026 ×2

Red 1 piece

  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Red Part 3794a ×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.