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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.

Complete Train Set with Motor and Signal

Checking

183 Complete Train Set with Motor and Signal

187 pieces in 56 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

Red 53 pieces

  • Brick 1 x 1 Red Part 3005 Element 300521 ×4
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×10
  • Brick 1 x 4 Red Part 3010 Element 301021 ×2
  • Brick 1 x 6 Red Part 3009 Element 300921 ×2
  • Brick 1 x 6 with Black Car Grill Print [Embossed] Red Part 3009bpr0006 ×2
  • Brick 1 x 8 Red Part 3008 Element 300821 ×4
  • Brick Sloped 33° 3 x 2 Red Part 3298 Element 329821 ×2
  • Brick Sloped 33° 3 x 4 Red Part 3297 Element 329721 ×2
  • Brick Special 1 x 1 x 2 with Shutter Holder Red Part 3581 Element 4207299 or 358121 ×4
  • Hook, Plate 1 x 2 with Crane Hook Left Red Part 3127 Element 4120019 ×1
  • Plate 2 x 3 Red Part 3021 Element 302121 ×6
  • Plate 2 x 4 Red Part 3020 Element 302021 ×2
  • Train Direction Switch - 4.5V 2 x 3 Red Part 3218 ×1
  • Train Signal Circuit-Breaker Bar Red Part upn0387 ×1
  • Train Signal Post Red Part upn0262 ×1
  • Train Wheel Spoked for Motor Red Part upn0383a ×4
  • Winch 4 x 4 x 2 with Sloped Top with Red Drum [Complete Assembly] Red Part 559c02 ×1
  • Window 1 x 2 x 2 Shutter Red Part 3582 Element 358221 ×4

Blue 47 pieces

  • Battery Cover, Train Car Roof 6 x 14 Blue Part 699 ×1
  • Brick 1 x 1 Blue Part 3005 Element 300523 ×4
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×2
  • Brick 1 x 4 Blue Part 3010 Element 301023 ×4
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×2
  • Brick Sloped 45° 2 x 4 Blue Part 3037 Element 4107437 or 303723 ×2
  • Vehicle Track, Train, Tapered Rail Curved Inside Blue Part 3230a ×16
  • Vehicle Track, Train, Tapered Rail Curved Outside Blue Part 3229a ×16

Black 45 pieces

  • Battery Box, Train Car with Black Base, Red Wheels and Magnets Black Part 3443c02 ×1
  • Brick 1 x 2 Black Part 3004 Element 300426 ×3
  • Brick 1 x 6 Black Part 3009 Element 300926 ×1
  • Brick Round 1 x 1 Solid Stud Black Part 3062a ×1
  • Brick Sloped 45° 2 x 1 without Bottom Pin Black Part 3040a ×2
  • Brick Sloped 45° 2 x 2 Double Convex Black Part 3045 Element 4189064 or 304526 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Round Bottom Pin] Black Part 3660a ×4
  • Motor, Train, 4.5V 12 x 4 x 3 1/3 Type II Black Part upn0259c01 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×4
  • Plate 2 x 8 Black Part 3034 Element 303426 ×1
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×1
  • Plate 4 x 8 Black Part 3035 Element 303526 ×1
  • Plate 6 x 8 Black Part 3036 Element 303676 or 303626 ×1
  • String Cord Thin (0.5mm) [Undetermined Length] Black Part 56823 Element 7009426 ×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 ×1
  • Train Buffer Single Black Part 3488 ×12
  • Turntable 4 x 4 - Old Type Complete - Faceted Black Part 3404ac01 ×1
  • Tyre for Train Wheel for Electric Train Motor 12V Black Part 458 ×4

White 21 pieces

  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×16
  • Window 1 x 2 x 1, Short Lip [with Glass] White Part 27c01 ×2
  • Window 1 x 2 x 2 Classic, Short Lip [with Glass] White Part 3081c01 Element 73594 ×2
  • Wire with 2-Prong Connectors, 12V / 4.5V 11L White Part upn0257c11 ×1

Yellow 16 pieces

  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×4
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×4
  • Window 1 x 1 x 1 Classic with Short Sill, No Glass Yellow Part 3087c ×4
  • Window 1 x 1 x 2, Short Lip [with Glass] Yellow Part 29c01 ×4

Light Gray 4 pieces

  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×3
  • Plate 4 x 6 Light Gray Part 3032 Element 303202 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 183-1 [No Color/Any Color] Part 004747 ×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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