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.

Starter Train Set with Motor

Checking

115-2 Starter Train Set with Motor

132 pieces in 27 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 37 pieces

  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×6
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×5
  • Brick 1 x 8 Blue Part 3008 Element 300823 ×1
  • Brick 2 x 2 without Inside Ridges Blue Part 3003a ×4
  • Brick 2 x 4 without Cross Supports Blue Part 3001a ×15
  • Brick 2 x 8 Blue Part 3007 Element 6037384 or 300723 ×1
  • Brick 2 x 2 without Inside Ridges Red Part 3003a ×1
  • Brick 2 x 4 without Cross Supports Red Part 3001a ×2
  • Brick 1 x 2 Trans-Clear Part 3004 Element 4256587 or 300410 ×1
  • Brick 2 x 4 without Cross Supports Trans-Clear Part 3001a ×1

Transportation - Land 36 pieces

  • 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 ×4

Wheels and Tyres 26 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 ×12
  • Brick Special 2 x 4 with Wheel Holder Old, Clear Bottom, Red Inside White Part 7049bc01 ×6

Plates 21 pieces

  • Plate 6 x 16 Light Gray Part 3027 Element 4160991 or 302702 ×3
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×18

Plates Special 7 pieces

  • Plate Special 6 x 16 with Motor Opening Narrow Light Gray Part 3058a ×1
  • Plate Special 3 x 2 with Hole (Train Coupler Closed) with Hook Red Part 3176c01 ×3
  • Plate Special 3 x 2 with Rounded End, Hole Red Part 3176 Element 4188189 or 317621 ×3

Electronics 3 pieces

  • Battery Box, 4.5V 7 x 11 x 3 Type 1 [Complete Assembly] Blue Part 468c01 ×1
  • Motor, Train, 4.5V 12 x 4 x 4 Type I Blue Part upn0284c02 ×1
  • Wire with 4 x Metal 1-prong Connectors 4.5V, 85L [Old Type] White Part upn0159c85 ×1

Bricks Sloped 2 pieces

  • Brick Sloped 45° 2 x 2 Blue Part 3039 Element 303923 ×1
  • Brick Sloped 45° 2 x 2 Red Part 3039 Element 303921 ×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