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.

Letters Building System

Checking

852522 Letters Building System

179 pieces in 23 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

Bricks 100 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×22
  • Brick 1 x 2 Black Part 3004 Element 300426 ×14
  • Brick 1 x 3 Black Part 3622 Element 362226 ×6
  • Brick 1 x 4 Black Part 3010 Element 301026 ×6
  • Brick 1 x 1 Blue Part 3005 Element 300523 ×8
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×5
  • Brick 1 x 1 Green Part 3005 Element 300528 ×8
  • Brick 1 x 2 Green Part 3004 Element 4107736 or 300428 ×5
  • Brick 1 x 1 Red Part 3005 Element 300521 ×8
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×5
  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×8
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×5

Plates Round Curved and Dishes 36 pieces

  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 ×9
  • Plate Round 1 x 1 with Solid Stud Blue Part 6141 Element 614123 ×9
  • Plate Round 1 x 1 with Solid Stud Red Part 6141 Element 614121 ×9
  • Plate Round 1 x 1 with Solid Stud Yellow Part 6141 Element 614124 ×9

Bricks Round and Cones 30 pieces

  • Brick Round Corner 2 x 2 Macaroni with Stud Notch Black Part 3063b Element 306326 ×22
  • Brick Round Corner 2 x 2 Macaroni with Stud Notch Red Part 3063b Element 306321 ×8

Plates 9 pieces

  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×2
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×4
  • Plate 6 x 12 White Part 3028 Element 4120020 or 302801 ×3

Plates Special 2 pieces

  • Plate Special 3 x 2 with Rounded End, Hole Red Part 3176 Element 4188189 or 317621 ×2

Windscreens and Fuselage 2 pieces

  • Windscreen 5 x 2 x 1 2/3 White Part 6070 Element 6252516 or 6192714 ×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.