BlockTalk Find Your Set

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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.

Electronic Train

Checking

118 Electronic Train

103 pieces in 35 part and color combinations.

LEGO counts 110 pieces. This inventory comes from a separate parts catalog and lists 103; 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

Plates 35 pieces

  • Plate 1 x 1 Black Part 3024 Element 302426 ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 ×9
  • Plate 2 x 2 Black Part 3022 Element 302226 ×2
  • Plate 2 x 3 Black Part 3021 Element 302126 ×7
  • Plate 2 x 4 Black Part 3020 Element 302026 ×8
  • Plate 1 x 1 Red Part 3024 Element 302421 ×2
  • Plate 1 x 2 Red Part 3023 Element 302321 ×4
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×1

Bricks 27 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×8
  • Brick 1 x 4 Black Part 3010 Element 301026 ×1
  • Brick 1 x 6 Black Part 3009 Element 300926 ×7
  • Brick 1 x 8 Black Part 3008 Element 300826 ×2
  • Brick 2 x 3 without Cross Supports Black Part 3002a ×2
  • Brick 2 x 4 without Cross Supports Black Part 3001a ×3
  • Brick 1 x 1 Trans-Clear Part 3005 Element 6514207 or 6220959 ×2
  • Brick 1 x 2 Trans-Clear Part 3004 Element 4256587 or 300410 ×2

Electronics 15 pieces

  • Battery Box, 4.5V 7 x 11 x 3 Type 1 [Complete Assembly] Black Part 468c01 ×1
  • Motor, Train, 4.5V 12 x 4 x 4 Type I Black Part upn0284c02 ×1
  • Whistle, Train 4.5V, Thick Black Part upn0312a ×1
  • Electric Connector, 1 Way Male Rounded with Hollow Pin (Banana Plug) Blue Part 996ac01 ×4
  • Electric Connector, 1 Way Male Rounded with Hollow Pin (Banana Plug) Red Part 996ac01 ×4
  • Control Unit, Train 4.5V Whistle Brick 4 x 8 x 2 with Forward/Stop Functions Trans-Clear Part upn0313a ×1
  • Microphone, Train 4.5V 4 x 4 x 2 with Horizontal Plug Sockets White Part upn0311a ×1
  • Wire 12V / 4.5V with Two Leads [Undetermined Length] White Part 74503 ×2

Wheels and Tyres 14 pieces

  • Tyre for Train Wheel for Electric Train Motor 12V Light Gray Part 458 ×4
  • Train Wheel with 2 x 2 Stud Center, Beveled Tread and Cam Axle for Motor Red Part upn0384b ×4
  • Train Wheel with 2 x 2 Stud Center, Traction Teeth Red Part upn0384a ×4
  • Brick Special 2 x 4 with Wheel Holder Old, Clear Bottom, Red Inside White Part 7049bc01 ×2

Bricks Sloped 5 pieces

  • Brick Sloped 45° 2 x 1 without Bottom Pin Black Part 3040a ×4
  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×1

Magnets and Holders 3 pieces

  • Plate Special 2 x 4 with Train Coupler Open with Magnet Short Cylinder Blue Red Part 737ac02 ×1
  • Plate Special 2 x 4 with Train Coupler Open with Magnet Short Cylinder Red Red Part 737ac01 ×2

Windows and Doors 2 pieces

  • Window 1 x 1 x 1 Classic with Long Sill [Complete] Red Part 3087bc01 ×2

Bricks Round and Cones 1 piece

  • Brick Round 1 x 1 Solid Stud Black Part 3062a ×1

Plates Special 1 piece

  • Plate Special 6 x 16 with Motor Opening Wide Light Gray Part 3058b ×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.

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