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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.

Container Crane Depot

Checking

7823 Container Crane Depot

476 pieces in 128 part and color combinations, plus 2 minifigures.

LEGO counts 487 pieces. This inventory comes from a separate parts catalog and lists 484, including the 8 parts inside the minifigures; 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

Plates 171 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×12
  • Plate 1 x 6 Black Part 3666 Element 366626 ×8
  • Plate 2 x 10 Black Part 3832 Element 383226 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×2
  • Plate 2 x 4 Black Part 3020 Element 302026 ×3
  • Plate 2 x 6 Black Part 3795 Element 379526 ×2
  • Plate 6 x 16 Black Part 3027 Element 302726 ×1
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×16
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×1
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×1
  • Plate 2 x 6 Blue Part 3795 Element 379523 ×1
  • Plate 2 x 8 Blue Part 3034 Element 303423 ×3
  • Plate 4 x 10 Blue Part 3030 Element 303073 or 303023 ×1
  • Plate 4 x 4 Blue Part 3031 Element 4243815 or 303123 ×1
  • Plate 4 x 8 Blue Part 3035 Element 303523 ×4
  • Plate 1 x 1 Light Gray Part 3024 Element 302402 ×2
  • Plate 1 x 10 Light Gray Part 4477 Element 447702 ×8
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×7
  • Plate 1 x 3 Light Gray Part 3623 Element 362302 ×12
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×4
  • Plate 1 x 8 Light Gray Part 3460 Element 346002 ×20
  • Plate 2 x 10 Light Gray Part 3832 Element 383202 ×4
  • Plate 2 x 16 Light Gray Part 4282 Element 428202 ×4
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×2
  • Plate 1 x 1 Red Part 3024 Element 302421 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×16
  • Plate 1 x 3 Red Part 3623 Element 362321 ×1
  • Plate 1 x 4 Red Part 3710 Element 371021 ×4
  • Plate 2 x 10 Red Part 3832 Element 383221 ×3
  • Plate 2 x 16 Red Part 4282 Element 428221 ×1
  • Plate 2 x 3 Red Part 3021 Element 302121 ×1
  • Plate 2 x 4 Red Part 3020 Element 302021 ×7
  • Plate 2 x 6 Red Part 3795 Element 379521 ×1
  • Plate 2 x 8 Red Part 3034 Element 303421 ×3
  • Plate 4 x 4 Red Part 3031 Element 4243814 or 303121 ×1
  • Plate 4 x 6 Red Part 3032 Element 303221 ×1
  • Plate 1 x 1 Trans-Yellow Part 3024 Element 6513966 or 6252045 ×2
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 ×2
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×4
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×2
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×1

Bricks 93 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×4
  • Brick 1 x 2 Black Part 3004 Element 300426 ×8
  • Brick 1 x 4 Black Part 3010 Element 301026 ×4
  • Brick 1 x 8 Black Part 3008 Element 300826 ×6
  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×13
  • Brick 1 x 3 Light Gray Part 3622 Element 362202 ×4
  • Brick 1 x 4 Light Gray Part 3010 Element 301002 ×4
  • Brick 1 x 6 Light Gray Part 3009 Element 300902 ×4
  • Brick 1 x 8 Light Gray Part 3008 Element 300802 ×8
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×10
  • Brick 1 x 2 with Black Grill Print Red Part 3004pr9981 ×4
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×3
  • Brick 2 x 3 Red Part 3002 Element 300271 or 300221 ×2
  • Brick 2 x 4 Red Part 3001 Element 300121 ×2
  • Brick 1 x 2 with Black Grill Print White Part 3004pr9981 ×1
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×7
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×1
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×8

Plates Special 40 pieces

  • Plate Special 1 x 8 with Door Rail Black Part 4510 Element 4286009 or 451026 ×8
  • Plate Special 2 x 2 with Wheel Holder Black Part 4488 Element 6092658 or 448826 ×4
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Blue Part 4081b Element 6281991 or 4632567 ×2
  • Plate Special 1 x 2 with Ladder Light Gray Part 4175 Element 4100526 or 417502 ×3
  • Plate Special 1 x 8 with Door Rail Light Gray Part 4510 Element 451002 ×18
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Red Part 4081b Element 6281994 or 4632572 ×4
  • Plate Special 1 x 2 with Ladder Red Part 4175 Element 6285246 or 6179575 ×1

Bricks Sloped 18 pieces

  • Brick Sloped Inverted 45° 2 x 1 Black Part 3665 Element 366526 ×8
  • Brick Sloped 33° 3 x 1 Light Gray Part 4286 Element 428602 ×2
  • Brick Sloped 33° 3 x 2 Red Part 3298 Element 329821 ×6
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Red Part 3747a Element 374721 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Red Part 3660 Element 366021 ×1

Panels 18 pieces

  • Panel 1 x 2 x 1 [Square Corners] Black Part 4865a Element 486526 ×4
  • Panel 1 x 2 x 1 [Square Corners] Red Part 4865a ×6
  • Panel 1 x 2 x 3 - Solid Studs White Part 2362a ×4
  • Panel 1 x 4 x 3 [Solid Studs] White Part 4215a ×4

Technic Bricks 18 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Light Gray Part 3700 Element 370002 ×4
  • Technic Brick 1 x 4 [3 Pin Holes] Light Gray Part 3701 Element 370102 ×4
  • Technic Brick 1 x 8 [7 Pin Holes] Light Gray Part 3702 Element 370202 ×4
  • Technic Brick 1 x 16 [15 Pin Holes] Red Part 3703 Element 370321 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×4
  • Technic Brick 1 x 6 [5 Pin Holes] Red Part 3894 Element 389421 ×1

Tiles 18 pieces

  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×4
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×4
  • Tile 1 x 2 with Groove Blue Part 3069b Element 306923 ×4
  • Tile 1 x 8 with Groove Blue Part 4162 Element 416223 ×2
  • Tile 1 x 1 with Groove Red Part 3070b Element 307021 ×2
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×2

Transportation - Land 18 pieces

  • Train Buffer Beam Black Part 4022 Element 4109853 or 402276 ×2
  • Steering Stand 1 x 2 with Black Steering Wheel Blue Part 3829c01 Element 9566 ×1
  • Vehicle Base 4 x 5 with Wheel Arches, 2 x 2 Opening Blue Part 4211 Element 421123 ×1
  • Vehicle Track, Train, Sleeper Plate 2 x 8 with Cable Grooves Dark Gray Part 4166 Element 416627 ×5
  • Vehicle Track, Train, Slotted Rail Straight Light Gray Part 3228b Element 322802 ×8
  • Seat / Chair 2 x 2 Yellow Part 4079 ×1

Wheels and Tyres 16 pieces

  • Plate Special 2 x 2 with Wheels Red Black Part 122c01 ×2
  • Tyre 15 x 6 Offset Tread Small Black Part 3641 Element 4501046 or 364126 ×4
  • Tyre 21 x 8 Offset Tread Medium Black Part 4084 ×4
  • Wheels Train Spoked Small (23mm D.) and Black Brick, Modified 2 x 4 [Black] Black Part 4180c01 ×2
  • Wheel 8 x 6 Light Gray Part 4624 Element 462402 ×4

Technic Pins 12 pieces

  • Technic Pin with Friction Ridges Lengthwise, without Center Slots Black Part 4459 ×12

Bricks Round and Cones 8 pieces

  • Cone 1 x 1 [No Top Groove] Red Part 4589 Element 458921 ×8

Hinges, Arms and Turntables 8 pieces

  • Hinge Vehicle Roof 4 x 4 Blue Part 4213 Element 4240387 or 421323 ×1
  • Hinge Plate 1 x 2 with 3 Fingers [Solid Studs] Light Gray Part 4275a ×2
  • Hinge Tile 1 x 2 1/2 with 2 Fingers on Top Light Gray Part 4531 Element 4256463 or 4163772 ×2
  • Hinge Vehicle Roof 4 x 4 Red Part 4213 Element 4179277 or 421321 ×1
  • Hinge Vehicle Roof Holder 1 x 4 Red Part 4315 Element 4179280 or 431521 ×1
  • Hinge Vehicle Roof Holder 1 x 4 x 2 White Part 4214 Element 421401 ×1

Windows and Doors 8 pieces

  • Door 1 x 3 x 1 Left White Part 3822 Element 4527637 or 4161547 ×1
  • Door 1 x 3 x 1 Right White Part 3821 Element 4537987 or 4527638 ×1
  • Window 1 x 2 x 3 Shutter White Part 3856 Element 4177767 or 385601 ×4
  • Window 1 x 4 x 3 White Part 3853 Element 4175392 or 385301 ×2

Supports, Girders and Cranes 5 pieces

  • Crane Hook 1 x 4 x 1 Black Part 70278 Element 70278 ×1
  • Bracket 2 x 3 - 1 x 3 (Train Signal Stand) Light Gray Part 4169 Element 416902 ×4

Magnets and Holders 4 pieces

  • Magnet Cylindrical Black Part 73092 Element 73092 ×2
  • Train Coupling Black Part 4023 ×2

Windscreens and Fuselage 4 pieces

  • Windscreen 2 x 4 x 2 Trans-Clear Part 3823 Element 6581801 or 6253681 ×2
  • Windscreen 2 x 4 x 2 Inverted Trans-Clear Part 4284 Element 4528851 or 4176943 ×1
  • Windscreen 2 x 4 x 2 Vertical Trans-Clear Part 4594 Element 6507908 or 6240532 ×1

Bars, Ladders and Fences 2 pieces

  • Lever Small Base with Light Gray Lever Black Part 298c03 Element 73667 ×2

Bricks Special 2 pieces

  • Brick Special 1 x 1 with Headlight White Part 4070 Element 6548267 or 407001 ×2

Electronics 2 pieces

  • Train Track 12V Conducting Rail Straight Light Gray Part 3242 ×2

Plates Round Curved and Dishes 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 ×2

String, Bands and Reels 2 pieces

  • String Cord Thin (0.5mm) 75cm Black Part 56823c75 Element 7909 ×1
  • String Reel Winch 2 x 4 x 2 (Light Gray Drum) Red Part 73037 Element 4190523 or 4109857 ×1

Tiles Special 2 pieces

  • Tile Special Round 2 x 2 - Thin Lifting Ring Red Part 2376 Element 4235017 or 4222123 ×2

Tubes and Hoses 2 pieces

  • Flexible Hose 8.5L with Tabless Ends (Ends same color as Tube) Black Part 73590c01a ×2

Baseplates 1 piece

  • Baseplate 32 x 32 with 7-Stud Straight with Road with White Sidelines Print Light Gray Part 2358pr0001 Element 80547 ×1

Plates Wedged 1 piece

  • Wedge Plate 3 x 4 without Stud Notches White Part 4859 Element 4215973 or 4199395 ×1

Stickers 1 piece

  • Sticker Sheet for Set 7823-1 [No Color/Any Color] Part 190595 Element 190595 ×1

Minifigures 2 figures

  • Man, Blue Shirt, Blue Legs, Red Hard Hat Minifigure, checked as a whole figure ×1
  • Man - Red Jacket, Black Legs. Red Hat Minifigure, checked as a whole figure ×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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