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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.

12V Freight Train and Track

Checking

725-2 12V Freight Train and Track

314 pieces in 65 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.

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Piece checklist

Bricks 101 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×14
  • Brick 1 x 2 Black Part 3004 Element 300426 ×22
  • Brick 1 x 4 Black Part 3010 Element 301026 ×16
  • Brick 1 x 6 Black Part 3009 Element 300926 ×14
  • Brick 1 x 8 Black Part 3008 Element 300826 ×4
  • Brick 2 x 2 without Inside Ridges Black Part 3003a ×3
  • Brick 1 x 1 Red Part 3005 Element 300521 ×6
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×4
  • Brick 1 x 4 Red Part 3010 Element 301021 ×6
  • Brick 1 x 6 Red Part 3009 Element 300921 ×6
  • Brick 2 x 3 without Cross Supports Red Part 3002a ×2
  • Brick 2 x 4 without Cross Supports Red Part 3001a ×1
  • 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 ×1

Transportation - Land 66 pieces

  • Train Buffer Single Black Part 3488 ×20
  • Train, Steam Engine Cylinder, 1 x 2 Studs, Flat Surfaces Black Part 263 ×2
  • 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
  • Train Steam Drive Rod Holder Red Part upn0282 ×2
  • Train Steam Drive Rod Yellow Part upn0269 ×2

Plates 60 pieces

  • Plate 1 x 1 Black Part 3024 Element 302426 ×4
  • Plate 1 x 2 Black Part 3023 Element 302326 ×3
  • Plate 2 x 2 Black Part 3022 Element 302226 ×2
  • Plate 2 x 3 Black Part 3021 Element 302126 ×10
  • Plate 4 x 6 Black Part 3032 Element 303226 ×2
  • Plate 6 x 8 Black Part 3036 Element 303676 or 303626 ×1
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×2
  • Plate 2 x 3 Light Gray Part 3021 Element 302102 ×4
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×1
  • Plate 2 x 8 Light Gray Part 3034 Element 303402 ×1
  • Plate 6 x 16 Light Gray Part 3027 Element 4160991 or 302702 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×1
  • Plate 1 x 8 White Part 3460 Element 6550141 or 346001 ×1
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×20
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×1
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×1
  • Plate 2 x 8 Yellow Part 3034 Element 303424 ×1
  • Plate 4 x 12 Yellow Part 3029 Element 302924 ×2

Electronics 26 pieces

  • Brick 2 x 4, 12V with Power Pickups for Train Motor and Solid Pins Black Part 433c01 ×2
  • Motor, Train, 12V 12 x 4 x 3 1/3 Type I with Two Side Holes Black Part upn0274c02 ×1
  • Electric Adapter / Transformer, Train 12V, 220V Type 2 Blue Part upn0127 ×1
  • Electric Connector, 2 Way Male Rounded Wide Long, Hollow Pins Blue Part upn0128c01 ×1
  • 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
  • Wire with Train Track Contact Base, 97cm Blue Part 2913 ×1

Bricks Round and Cones 21 pieces

  • Brick Round 1 x 1 Solid Stud Black Part 3062a ×1
  • Brick Round 1 x 1 Solid Stud White Part 3062a ×2
  • Brick Round Corner 2 x 2 Macaroni with Stud Notch White Part 3063b Element 4501579 or 306301 ×16
  • Cone 4 x 4 x 3 with Single Solid Stud White Part 272 ×2

Bricks Sloped 13 pieces

  • Brick Sloped 45° 2 x 1 without Bottom Pin Black Part 3040a ×7
  • Brick Sloped 45° 2 x 3 Black Part 3038 Element 303826 ×6

Wheels and Tyres 11 pieces

  • Brick Special 2 x 4 with Wheel Holder Old, Clear Bottom, Red Inside Black Part 7049bc01 ×1
  • Train Wheel Spoked for Motor Black Part upn0383a ×1
  • Tyre for Train Wheel for Electric Train Motor 12V Black Part 458 ×5
  • Train Wheel Spoked for Motor Red Part upn0383a ×4

Windows and Doors 6 pieces

  • Door 1 x 5 x 4 Left Red Part 3195 ×2
  • Door 1 x 5 x 4 Right Red Part 3194 ×2
  • Window 1 x 1 x 1 Classic with Short Sill, No Glass Yellow Part 3087c ×2

Magnets and Holders 5 pieces

  • Train Base 6 x 12 Type 1 with Wheels and Magnets [Complete Assembly] Black Part 270c02 ×1
  • Train Base 6 x 16 Old with Magnets Black Part 4178a ×1
  • Train Base 6 x 16 Type I with Wheels and Red and Blue Magnets Black Part 736c02 ×3

Panels 4 pieces

  • Panel, Trapezoid, Tipper End Flat with Pins, 1 x 2 Anti-studs Yellow Part 3145 ×4

Stickers 1 piece

  • Sticker Sheet for Set 725-2 [No Color/Any Color] Part 004285 ×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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