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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.

Discovery Station

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1782 Discovery Station

304 pieces in 173 part and color combinations, plus 5 minifigures.

LEGO counts 322 pieces. This inventory comes from a separate parts catalog and lists 328, including the 24 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 39 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×1
  • Plate 1 x 3 Black Part 3623 Element 362326 ×7
  • Plate 1 x 4 Black Part 3710 Element 371026 ×1
  • Plate 1 x 8 Black Part 3460 Element 346026 ×4
  • Plate 2 x 2 Black Part 3022 Element 302226 ×2
  • Plate 2 x 2 Corner Black Part 2420 Element 242026 ×2
  • Plate 2 x 4 Black Part 3020 Element 302026 ×1
  • Plate 2 x 6 Black Part 3795 Element 379526 ×1
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×1
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×2
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×1
  • Plate 4 x 8 Light Gray Part 3035 Element 303502 ×1
  • Plate 2 x 4 Red Part 3020 Element 302021 ×1
  • Plate 1 x 1 Trans-Yellow Part 3024 Element 6513966 or 6252045 ×1
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 ×1
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×1
  • Plate 2 x 12 White Part 2445 Element 6552091 or 244501 ×1
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×1
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×1
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×3
  • Plate 4 x 6 White Part 3032 Element 303201 ×2
  • Plate 6 x 10 White Part 3033 Element 4528341 or 303301 ×2
  • Plate 1 x 10 Yellow Part 4477 Element 6079138 or 6078095 ×1

Hinges, Arms and Turntables 32 pieces

  • Arm Piece with Pin, 2 Fingers Black Part 6048a Element 604826 ×8
  • Arm Piece with Pin, 3 Fingers Black Part 6217 Element 4107590 or 4101774 ×4
  • Hinge Bar with 3 Fingers and End Stud (Control Lever) Black Part 2433 Element 4497182 or 243326 ×1
  • Hinge Brick 1 x 2 Top Plate Thin Black Part 3938 Element 393826 ×1
  • Turntable 2 x 2 Plate, Base Black Part 3680 Element 368076 or 368026 ×3
  • Arm Piece with Towball and Clip Dark Gray Part 30082 Element 4106573 ×4
  • Turntable 2 x 2 Plate - Top Light Gray Part 3679 Element 367952 or 367902 ×3
  • Arm Piece with Towball Socket, 3 Fingers White Part 3613 Element 4114147 ×4
  • Hinge Vehicle Roof Holder 1 x 4 White Part 4315 Element 4214079 or 4190507 ×1
  • Turntable 4 x 4 Square Base with Top, Complete Assembly White Part 3403c01 Element 4221666 or 4143679 ×1
  • Hinge Brick 1 x 2 Base Yellow Part 3937 Element 393724 ×1
  • Hinge Vehicle Roof Holder 1 x 4 Yellow Part 4315 Element 4253788 or 4239251 ×1

Bricks Sloped 26 pieces

  • Brick Sloped 33° 3 x 2 Light Gray Part 3298 Element 329802 ×4
  • Brick Sloped 45° 2 x 4 Light Gray Part 3037 Element 303702 ×1
  • Brick Sloped 75° 2 x 1 x 3 with Open Stud Light Gray Part 4460a Element 446002 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Light Gray Part 3660 Element 366002 ×5
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed Light Gray Part 4871 Element 487102 ×1
  • Brick Sloped 45° 2 x 2 White Part 3039 Element 6552103 or 303901 ×1
  • Brick Sloped 45° 2 x 2 with Divers Computer Print White Part 3039pr9993 Element 4106591 ×1
  • Brick Sloped 45° 2 x 2 with Radar Screen Print White Part 3039pr0005 Element 4261941 or 82024 ×1
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin White Part 3747a Element 374701 ×1
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper White Part 4287a ×2
  • Brick Sloped Inverted 45° 2 x 1 White Part 3665 Element 6552106 or 366501 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] White Part 3660 Element 366001 ×3
  • Brick Sloped 45° 2 x 1 with Bottom Pin Yellow Part 3040b Element 4121965 or 304024 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Yellow Part 3660 Element 366024 ×1
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed Yellow Part 4871 Element 6215106 or 6064071 ×1

Tiles 22 pieces

  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×2
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×3
  • Tile 2 x 2 with Blue and Red Eel Print Black Part 3068bpr0375 Element 4106587 ×1
  • Tile 2 x 2 with Blue and Red Scallop and Crab Print Black Part 3068bpr0359 Element 4106588 ×1
  • Tile 2 x 2 with Blue and Red Seahorse Print Black Part 3068bpr0360 Element 4106586 ×1
  • Tile 1 x 4 with Groove Blue Part 2431 Element 243123 ×1
  • Tile 1 x 4 with Groove Light Gray Part 2431 Element 243102 ×4
  • Tile 2 x 2 with Groove Light Gray Part 3068b Element 306802 ×2
  • Tile 1 x 1 with Groove Trans-Red Part 3070b Element 6581817 or 6254248 ×3
  • Tile 1 x 2 with Red and Yellow Control Panel Print (Original) White Part 3069bpr0048 Element 4264367 or 81515 ×1
  • Tile 1 x 2 with 'X-RAY' Print Yellow Part 3069bpr0050 Element 4106590 ×1
  • Tile 1 x 2 with Gauge and "23" Print Yellow Part 3069bpr0078 Element 4106589 ×1
  • Tile 2 x 2 with Groove Yellow Part 3068b Element 6388487 or 306824 ×1

Plates Special 20 pieces

  • Plate Special 1 x 2 Side Handle [Free Ends] Black Part 2540 Element 4140588 or 254026 ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Black Part 3794a ×2
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 6mm] Black Part 4623 Element 4597267 or 462326 ×1
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Black Part 3839b Element 383926 ×1
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Black Part 2444 Element 244426 ×4
  • Plate Special 3 x 2 with Rounded End, Hole Black Part 3176 Element 317676 or 317626 ×1
  • Plate Special 2 x 2 with Wheel Holder Light Gray Part 4488 Element 448802 ×1
  • Plate Special 8 x 8 with Grille [No Hole in Center] Light Gray Part 4151a Element 415102 ×1
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Red Part 6019 Element 601971 or 601921 ×1
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Red Part 3794a ×2
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] White Part 6019 Element 601951 or 601901 ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Yellow Part 3794a ×2

Bricks 16 pieces

  • Brick 1 x 12 Blue Part 6112 Element 6305460 or 6175821 ×2
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×1
  • Brick 1 x 16 Light Gray Part 2465 Element 246502 ×2
  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×1
  • Brick 1 x 4 Light Gray Part 3010 Element 301002 ×1
  • Brick 2 x 10 Light Gray Part 3006 Element 300602 ×1
  • Brick 2 x 2 Light Gray Part 3003 Element 4103591 or 300352 ×2
  • Brick 2 x 2 Corner Light Gray Part 2357 Element 235752 or 235702 ×1
  • Brick 2 x 8 Light Gray Part 3007 Element 300702 ×1
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×1
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×1
  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×1
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×1

Bricks Round and Cones 14 pieces

  • Brick Round 2 x 2 with Axle Hole Blue Part 3941 Element 614373 or 614323 ×7
  • Brick Round 2 x 2 with Axle Hole Light Gray Part 3941 Element 614302 or 394102 ×5
  • Cone 1 x 1 [No Top Groove] Light Gray Part 4589 Element 458902 ×2

Plants & Trees 13 pieces

  • Plant, Palm Tree Base Brown Part 2563 Element 4160960 or 256325 ×1
  • Plant, Palm Tree Trunk - Long Indented Connector Brown Part 2536a Element 253675 or 253625 ×5
  • Plant, Palm Leaf Small Green Part 6148 Element 6269040 or 4258459 ×4
  • Plant, Sea Grass Green Part 30093 Element 4568215 or 4163425 ×3

Plates Round Curved and Dishes 13 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Green Part 4032a Element 403228 ×3
  • Plate Round 1 x 1 with Solid Stud Trans-Clear Part 6141 Element 6514052 or 6240030 2 spares in the box ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Neon Green Part 6141 Element 6240223 or 3005749 1 spare in the box ×3
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 2 spares in the box ×4
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) White Part 4032a Element 6601914 or 403201 ×2

Minifig Accessories 11 pieces

  • Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Black Part 4349 Element 434926 ×1
  • Minifig Footwear Flipper [Thin] Black Part 59275 ×4
  • Money / Coin with "10" Sans-serif Type Chrome Gold Part 57503 ×1
  • Money / Coin with "20" Sans-serif Type Chrome Gold Part 57504 ×1
  • Money / Coin with "30" Sans-serif Type Chrome Gold Part 57505 ×1
  • Money / Coin with "40" Sans-serif Type Chrome Gold Part 57506 ×1
  • Equipment Camera Handheld with Right-Aligned Viewfinder Yellow Part 30089a Element 4218501 or 4106579 ×1
  • Equipment Underwater Scooter, 2 Bar Handles, Octagonal End Yellow Part 30092 Element 4106578 ×1

Tiles Special 10 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×2
  • Tile Special Round 2 x 2 - Thin Lifting Ring Black Part 2376 Element 237626 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Light Gray Part 2412b Element 241202 ×3
  • Tile Special 2 x 2 with Top Pin Light Gray Part 2460 Element 246002 ×1
  • Tile Special 1 x 1 with Clip and Straight Tips White Part 2555 Element 255501 ×1
  • Tile Special 1 x 2 with Handle White Part 2432 Element 243201 ×1

Bricks Special 9 pieces

  • Brick Special 1 x 1 with Handle Black Part 2921 Element 6170566 or 292126 ×1
  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×2
  • Brick Special 1 x 1 with Headlight Blue Part 4070 Element 407023 ×2
  • Brick Special 1 x 1 with Headlight Red Part 4070 Element 407021 ×2
  • Brick Special 1 x 2 with Grille Red Part 2877 Element 6219677 or 287721 ×2

Supports, Girders and Cranes 7 pieces

  • Crane Harbor Derrick 10 (Top Part) Light Gray Part 2638 Element 263802 ×1
  • Crane Harbor Derrick 16 Light Gray Part 2636 Element 263602 ×2
  • Hook, Plate 1 x 2 with Crane Hook Left Light Gray Part 3127 Element 312702 ×2
  • Support 2 x 4 x 5 Stanchion Inclined [5mm wide posts] White Part 4476b Element 4142125 or 447601 ×2

Panels 6 pieces

  • Panel 1 x 4 x 3 [Hollow Studs] Light Gray Part 4215b Element 4186671 or 4105203 ×1
  • Panel 1 x 2 x 2 [Solid Studs] Trans-Dark Blue Part 4864a ×1
  • Panel 3 x 3 x 3 Corner Convex White Part 30079 Element 4106946 ×2
  • Panel 4 x 3 x 3 with Porthole with Trans Light Blue Glass White Part 30080c01 Element 4106735 ×2

String, Bands and Reels 6 pieces

  • Rubber Band Medium (Square Cross Section) Thin Cut Black Part 70012 Element 70012 1 spare in the box ×1
  • String Cord Medium Thickness 50cm Black Part 7916c50 ×2
  • String with End Studs 21L Overall Black Part 14226c21 Element 4109617 ×1
  • String Reel Winch 2 x 4 x 2 (Light Gray Drum) Light Gray Part 73037 Element 4109858 ×2

Bars, Ladders and Fences 5 pieces

  • Bar, 4 Top Bars, Palm Tree Top Green Part 2566 Element 4258355 or 4160961 ×1
  • Lever Small Base with Black Lever Red Part 298c02 Element 74335 ×4

Technic Bricks 5 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Light Gray Part 3700 Element 370002 ×4
  • Technic Brick 1 x 2 [1 Pin Hole] White Part 3700 Element 6619284 or 370001 ×1

Technic Pins 5 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×4
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×1

Transportation - Sea and Air 5 pieces

  • Propeller 3 Blade Small Black Part 2421 Element 6170693 or 4289255 ×1
  • Propeller 4 Blade 5 Diameter with Rounded Ends, Open Hub Black Part 2479 Element 247926 ×1
  • Propeller Housing Black Part 6040 Element 4144525 or 604026 ×1
  • Propeller 3 Blade 3 Diameter with Axle Cross Red Part 6041 Element 6173893 or 4163288 ×1
  • Boat / Rubber Raft / Dinghy 6 x 10 Yellow Part 30086c01 Element 6099480 or 4501130 ×1

Windscreens and Fuselage 5 pieces

  • Windscreen 2 x 4 x 3 Frame with Hollow Studs Blue Part 2352b Element 4109732 ×2
  • Windscreen 2 x 12 x 4 Trans-Clear Part 6267 Element 6514067 or 6338604 ×1
  • Windscreen 4 x 4 x 3 Canopy Trans-Light Blue Part 2620 Element 4258357 or 262042 ×1
  • Windscreen 6 x 6 x 3 Canopy Half Sphere with Hinge [Plain] Trans-Light Blue Part 30083 Element 4109878 or 4106876 ×1

Animal / Creature Body Parts 4 pieces

  • Animal Body Part, Shark / Sawfish Head Light Gray Part 30085 Element 4114036 or 4106549 ×1
  • Animal Body Part, Shark Body, without Bottom Tube Light Gray Part 2547 Element 4107531 ×1
  • Animal Body Part, Shark Body, without Bottom Tube White Part 2547 Element 4226367 or 4142284 ×1
  • Animal Body Part, Shark Head White Part 2548 Element 4226366 or 4142283 ×1

Animals / Creatures 4 pieces

  • Animal, Manta Ray Black Part 30084 Element 4106580 ×1
  • Animal, Monkey [Complete Assembly] Brown Part 2550c01 Element 74499 ×1
  • Animal, Dolphin (Normal Connection - With Axle Holder) Light Gray Part 6228b Element 4107174 ×1
  • Animal, Bird, Parrot with Coloured Feathers Print Red Part 2546pr0001 Element 81376 ×1

Containers 4 pieces

  • Box 2 x 2 x 2 Door with Slot White Part 4346 Element 434601 ×2
  • Box 2 x 2 x 2 [Hollow Studs] White Part 4345b Element 434501 ×2

Technic Connectors 4 pieces

  • Technic Pin Connector Round [No Slot] White Part 75535 Element 75535 ×4

Baseplates 2 pieces

  • Baseplate 16 x 32 Blue Part 3857 Element 4226002 or 274823 ×1
  • Baseplate 16 x 16 Tan Part 3867 Element 4106818 ×1

Bricks Wedged 2 pieces

  • Brick Wedged 3 x 4 [No Stud Notches] Red Part 2399 ×1
  • Brick Wedged 3 x 4 [No Stud Notches] Yellow Part 2399 Element 239924 ×1

Minifig Headwear 2 pieces

  • Helmet, Standard Black Part 2446 Element 6020155 or 4654642 ×1
  • Hat / Cap Long Peak [Plain] White Part 4485 Element 4547253 or 448501 ×1

Stickers 2 pieces

  • Sticker Sheet 1 for Set 1782-1 [No Color/Any Color] Part 71586 Element 4109873 ×1
  • Sticker Sheet 2 for Set 6560-1 [No Color/Any Color] Part 71452 Element 4106596 ×1

Technic Bushes 2 pieces

  • Technic Bush 1/2 Toothed Type II [X Opening] Light Gray Part 4265b Element 4100501 or 657702 1 spare in the box ×2

Transportation - Land 2 pieces

  • Seat / Chair 2 x 2 Black Part 4079 ×2

Windows and Doors 2 pieces

  • Window 2 x 4 x 3 Frame with Solid Studs Blue Part 4132 Element 4143291 or 4109605 ×2

Minifig Headwear Accessories 1 piece

  • Headwear Accessory Visor / Diver's Mask Trans-Clear Part 30090 Element 4106551 ×1

Minifig Neckwear 1 piece

  • Minifig Neckwear Scuba Airtank, No Bar Holder Light Gray Part 30091a Element 4106563 ×1

Minifig Shields, Weapons, & Tools 1 piece

  • Weapon Spear Gun with Rounded Trigger and Thin Spear Base Red Part 30088 Element 4106937 ×1

Technic Axles 1 piece

  • Technic Axle 4 Black Part 3705 Element 370526 ×1

Technic Special 1 piece

  • Technic Link 1 x 16 Light Gray Part 2637 Element 4106932 or 263702 ×1

Minifigures 5 figures

  • Marine Explorer, Red Shirt with Divers Logo, White Cap, Headset Minifigure, checked as a whole figure ×1
  • Skeleton, Standard Face, Ball Joint Arms (3626b Head) Minifigure, checked as a whole figure ×1
  • Marine Explorer, Red Shirt with Divers Logo, White Cap, Glasses and Headset Minifigure, checked as a whole figure ×1
  • Diver, Man, Red Wetsuit, Black Helmet with Mask, Airtank, Stubble Minifigure, checked as a whole figure ×1
  • Marine Explorer, Red Wetsuit, White Cap, Printed White Hair 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

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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.

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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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