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.

Front-End Loader

Checking

102A Front-End Loader

64 pieces in 24 part and color combinations.

LEGO counts 57 pieces. This inventory comes from a separate parts catalog and lists 64; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

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 26 pieces

  • Brick 1 x 2 with LEGO Logo Open O White with Black Outline Print Red Part 3004pr9974 ×1
  • Brick 1 x 1 Trans-Clear Part 3005 Element 6514207 or 6220959 ×3
  • Brick 1 x 2 Trans-Clear Part 3004 Element 4256587 or 300410 ×5
  • Brick 1 x 4 Trans-Clear Part 3010 Element 4256588 or 4227529 ×2
  • Brick 1 x 6 Trans-Clear Part 3009 Element 4235131 or 4130397 ×1
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×6
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×4
  • Brick 1 x 6 Yellow Part 3009 Element 300924 ×1
  • Brick 1 x 8 Yellow Part 3008 Element 300824 ×2
  • Brick 2 x 4 without Cross Supports Yellow Part 3001a ×1

Plates 19 pieces

  • Plate 4 x 8 Light Gray Part 3035 Element 303502 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 2 x 3 Red Part 3021 Element 302121 ×2
  • Plate 2 x 4 Red Part 3020 Element 302021 ×3
  • Plate 2 x 3 Yellow Part 3021 Element 302124 ×7
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×4

Electronics 7 pieces

  • Battery Box, 4.5V 7 x 11 x 3 Type 1 [Complete Assembly] Blue Part 468c01 ×1
  • Electric Connector, 1 Way Male Rounded with Cross-Cut Pin (Banana Plug) Blue Part 996bc01 ×4
  • Motor, Train, 4.5V 12 x 4 x 4 Type I with '4.5V' Print Blue Part upn0284c02pr0001 ×1
  • Wire 12V / 4.5V with Two Leads [Undetermined Length] White Part 74503 ×1

Wheels and Tyres 6 pieces

  • Technic Tread Crawler Wedge Black Part 498a ×2
  • Wheel Old with 4 Studs and Axle Cam for Motor Red Part 7039b ×4

Hinges, Arms and Turntables 4 pieces

  • Hinge Plate 2 x 5 with Small Hole [Complete Assembly] Red Part 3149ac01 ×4

Bricks Round and Cones 2 pieces

  • Brick Round 1 x 1 Solid Stud Red Part 3062a ×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.