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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.

Train Set with Signal

Checking

182 Train Set with Signal

370 pieces in 64 part and color combinations.

LEGO counts 369 pieces. This inventory comes from a separate parts catalog and lists 370; 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.

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Piece checklist

Black 168 pieces

  • Battery Box, Train Car with Black Base, Red Wheels and Magnets Black Part 3443c02 ×1
  • Battery Cover, Train Car Roof 6 x 14 Black Part 699 ×1
  • Brick 1 x 1 Black Part 3005 Element 300526 ×24
  • Brick 1 x 2 Black Part 3004 Element 300426 ×34
  • Brick 1 x 4 Black Part 3010 Element 301026 ×4
  • Brick 1 x 6 Black Part 3009 Element 300926 ×5
  • Brick 1 x 8 Black Part 3008 Element 300826 ×4
  • Brick 2 x 2 without Inside Ridges Black Part 3003a ×3
  • Brick Round 1 x 1 Solid Stud Black Part 3062a ×4
  • Brick Sloped 45° 2 x 1 without Bottom Pin Black Part 3040a ×16
  • Brick Sloped 45° 2 x 4 Black Part 3037 Element 303726 ×6
  • Brick Special 2 x 2 [Red Wheels for Single Tyre] Black Part 3137c01 ×2
  • Brick Special 2 x 4 with Wheel Holder Old, Clear Bottom, Red Inside Black Part 7049bc01 ×1
  • Brick Special 2 x 4, Train Sliding Wheel Holder Brick Black Part 429c01 ×2
  • Motor, Train, 4.5V, 4 x 12 x 3 1/3 Type 1 Black Part 564c01 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×16
  • Plate 2 x 2 Black Part 3022 Element 302226 ×5
  • Plate 2 x 8 Black Part 3034 Element 303426 ×1
  • Plate 4 x 8 Black Part 3035 Element 303526 ×1
  • Plate 6 x 8 Black Part 3036 Element 303676 or 303626 ×1
  • Train Base 6 x 16 Type I with Wheels and Red and Blue Magnets Black Part 736c02 ×3
  • Train Brick 2 x 4 x 1 1/3 Sliding Wheel Block - Type B with Ledge Black Part upn0184b ×2
  • Train Buffer Single Black Part 3488 ×16
  • Train Wheel Spoked for Motor Black Part upn0383a ×1
  • Tyre 14 x 4 Smooth Small Single Black Part 3139 Element 313926 ×4
  • Tyre for Train Wheel for Electric Train Motor 12V Black Part 458 ×9
  • Vehicle Base, Train 6 x 22 Type 1 Motor Opening Black Part 303 ×1

Blue 76 pieces

  • Brick 1 x 1 Blue Part 3005 Element 300523 ×20
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×4
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×6
  • Brick 1 x 8 Blue Part 3008 Element 300823 ×6
  • 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

Red 35 pieces

  • Brick 1 x 1 Red Part 3005 Element 300521 ×4
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×14
  • Brick 1 x 6 Red Part 3009 Element 300921 ×2
  • Magnet Coupling, Train, for Train Base Red Part 735 ×3
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×1
  • 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 ×8

Yellow 29 pieces

  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×2
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×2
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×1
  • Brick 1 x 6 Yellow Part 3009 Element 300924 ×4
  • Brick 1 x 8 Yellow Part 3008 Element 300824 ×6
  • Brick 2 x 3 without Cross Supports Yellow Part 3002a ×3
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×6
  • Plate 4 x 12 Yellow Part 3029 Element 302924 ×1
  • Plate 4 x 8 Yellow Part 3035 Element 303524 ×1
  • Plate Special 1 x 4 with Towball Yellow Part 3184 Element 318424 ×1
  • Window 1 x 1 x 1 Classic with Short Sill, No Glass Yellow Part 3087c ×2

White 22 pieces

  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×1
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×20
  • Wire with 2-Prong Connectors, 12V / 4.5V 11L White Part upn0257c11 ×1

Light Gray 20 pieces

  • Plate 2 x 3 Light Gray Part 3021 Element 302102 ×4
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×12
  • Plate 4 x 6 Light Gray Part 3032 Element 303202 ×2
  • Plate 6 x 16 Light Gray Part 3027 Element 4160991 or 302702 ×2

Trans-Clear 19 pieces

  • Brick 1 x 2 x 2 with Train Window Print Trans-Clear Part 772pr0001 ×18
  • Brick 1 x 4 Trans-Clear Part 3010 Element 4256588 or 4227529 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 182-1 [No Color/Any Color] Part 004590 ×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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