BlockTalk Find Your Set

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.

Train with 12V Electric Motor

Checking

720-2 Train with 12V Electric Motor

358 pieces in 68 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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

Show

Piece checklist

Black 92 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×6
  • Brick 1 x 2 Black Part 3004 Element 300426 ×9
  • Brick 1 x 4 Black Part 3010 Element 301026 ×8
  • Brick 1 x 6 Black Part 3009 Element 300926 ×3
  • Brick 1 x 8 Black Part 3008 Element 300826 ×8
  • Brick 1 x 8 with Gold '720' Print Black Part 3008pr0030 ×2
  • Brick 2 x 2 without Inside Ridges Black Part 3003a ×1
  • Brick 2 x 4 without Cross Supports Black Part 3001a ×14
  • Brick 2 x 4, 12V with Power Pickups for Train Motor and Solid Pins Black Part 433c01 ×2
  • Brick Round 1 x 1 Solid Stud Black Part 3062a ×5
  • Brick Sloped 45° 2 x 1 without Bottom Pin Black Part 3040a ×2
  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×1
  • Brick Sloped 45° 2 x 4 Black Part 3037 Element 303726 ×8
  • Motor, Train, 12V 12 x 4 x 3 1/3 Type I with Two Side Holes Black Part upn0274c02 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×3
  • Plate 2 x 2 Black Part 3022 Element 302226 ×4
  • Plate 2 x 3 Black Part 3021 Element 302126 ×5
  • Plate 2 x 4 Black Part 3020 Element 302026 ×8
  • Train Brick 2 x 4 x 1 1/3 Sliding Wheel Block - Type A Black Part upn0184 ×2

Red 92 pieces

  • Brick 1 x 1 Red Part 3005 Element 300521 ×10
  • Brick 1 x 4 Red Part 3010 Element 301021 ×16
  • Brick 1 x 4 with Black 'L 15.5 TON' and 'T 9.1 TON' Print Red Part 3010pr9940 ×2
  • Brick 1 x 4 with Black 'QH 44' Print Red Part 3010pr9938 ×2
  • Brick 1 x 6 Red Part 3009 Element 300921 ×4
  • Brick 2 x 3 without Cross Supports Red Part 3002a ×2
  • Brick 2 x 4 without Cross Supports Red Part 3001a ×1
  • Magnet Coupling, Train [Undetermined Length] Red Part upn0272 ×3
  • Plate 1 x 2 Red Part 3023 Element 302321 ×14
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×1
  • Plate 2 x 3 Red Part 3021 Element 302121 ×6
  • Plate 2 x 4 Red Part 3020 Element 302021 ×3
  • Plate Special 2 x 4 with Train Coupler, Open for Magnet [Reinforced] Red Part 753 ×6
  • Train Wheel Spoked for Motor Red Part upn0383a ×4
  • Train Wheel Spoked for Wagon Red Part upn0383b ×16
  • Window 1 x 1 x 1 Classic with Long Sill [Complete] Red Part 3087bc01 ×2

Blue 81 pieces

  • Brick 1 x 4 Blue Part 3010 Element 301023 ×2
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×4
  • Brick 1 x 8 Blue Part 3008 Element 300823 ×4
  • Brick 1 x 8 with 'P 431 L 30 TON T 9 TON' Print Blue Part 3008pr0011 ×2
  • Door 1 x 3 x 4 Left Blue Part 3193 ×2
  • Door 1 x 3 x 4 Right Blue Part 3192 ×2
  • Electric Connector, 2 Way Male Rounded Wide Long, Hollow Pins Blue Part upn0128c01 ×1
  • Magnet Coupling, Train [Undetermined Length] Blue Part upn0272 ×3
  • Train Track 12V Conducting Rail Curved [No Cable Connection Holes] Blue Part 3241b ×16
  • Train Track 12V Conducting Rail Straight without Cable Connection Holes Blue Part 3242c ×4
  • Vehicle Track, Train, Tapered Rail Curved Inside Blue Part 3230a ×16
  • Vehicle Track, Train, Tapered Rail Curved Outside Blue Part 3229a ×16
  • Vehicle Track, Train, Tapered Rail Straight 16L Blue Part 3228a ×8
  • Wire with Train Track Contact Base, 97cm Blue Part 2913 ×1

White 58 pieces

  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 Also in Trans-Clear ×8
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×16
  • Brick 1 x 4 with Black 'IKA 83' Print White Part 3010pr9950 ×2
  • Brick 1 x 4 with Black 'L 18 TON' and 'T 16 TON' Print White Part 3010pr9939 ×2
  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×4
  • Brick Special 2 x 4 with Wheel Holder Old, Clear Bottom, Red Inside White Part 7049bc01 ×6
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×20

Light Gray 27 pieces

  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×4
  • Plate 2 x 2 Light Gray Part 3022 Element 302202 ×1
  • Plate 2 x 3 Light Gray Part 3021 Element 302102 ×5
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×7
  • Plate 6 x 16 Light Gray Part 3027 Element 4160991 or 302702 ×5
  • Tyre for Train Wheel for Electric Train Motor 12V Light Gray Part 458 ×4
  • Vehicle Base, Train 6 x 22 Type 1 Motor Opening Light Gray Part 303 ×1

Trans-Clear 5 pieces

  • Brick 1 x 1 Trans-Clear Part 3005 Element 6514207 or 6220959 Also in White ×4
  • Brick 1 x 2 Trans-Clear Part 3004 Element 4256587 or 300410 ×1

Yellow 3 pieces

  • Door 1 x 5 x 4 Left Yellow Part 3195 Element 319524 ×1
  • Door 1 x 5 x 4 Right Yellow Part 3194 Element 319424 ×1
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×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.

We value your privacy

We use cookies 🍪 for analytics and to improve your experience. Read our privacy policy