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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.

Hydro Search Sub

Checking

6180 Hydro Search Sub

279 pieces in 96 part and color combinations, plus 4 minifigures.

The piece count includes the 19 parts inside the set's minifigures, which this inventory lists separately. 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 108 pieces

  • Brick 1 x 6 Black Part 3009 Element 300926 ×5
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Black Part 6091 Element 6383142 or 6184784 ×2
  • Brick Sloped 33° 3 x 1 Black Part 4286 Element 428626 ×6
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×1
  • Brick Wedged 3 x 3 Facet Black Part 2462 Element 6394879 or 4189116 ×2
  • Cockpit 6 x 6 x 3 1/3 Octagonal Canopy Base Black Part 30200 Element 4124388 or 4109932 ×1
  • Cone 2 x 2 x 1 2/3 Octagonal, Open Stud Black Part 6039 Element 4247938 or 4161038 ×8
  • Hinge Train Gate 2 x 4 Black Part 2873 Element 4257363 or 4163971 ×1
  • Hinge Vehicle Roof Holder 1 x 4 Black Part 4315 Element 4250225 or 431576 ×2
  • Magnet Cylindrical Black Part 73092 Element 73092 ×4
  • Magnet Holder Tile 2 x 2 - Tall Arms with Deep Notch Black Part 2609b Element 4502266 or 4163970 ×2
  • Minifig Footwear Flipper [Thin] Black Part 59275 ×6
  • Panel 1 x 2 x 1 [Square Corners] Black Part 4865a Element 486526 ×8
  • Plate 1 x 6 Black Part 3666 Element 366626 ×1
  • Plate 2 x 3 Black Part 3021 Element 302126 ×2
  • Plate 2 x 4 Black Part 3020 Element 302026 ×2
  • Plate 2 x 6 Black Part 3795 Element 379526 ×1
  • Plate 4 x 12 Black Part 3029 Element 302926 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×10
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 6mm] Black Part 4623 Element 4597267 or 462326 ×5
  • Plate Special 1 x 4 Offset with Bar Holes Black Part 4590 Element 6002559 or 4278029 ×5
  • Plate Special 10 x 10 Octagonal Opening Black Part 6063 Element 4107535 ×2
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×10
  • Tile 1 x 2 with Arrow Short Yellow without Black Border Print Black Part 3069bpr0038 Element 82057 ×2
  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×7
  • Tile 2 x 2 with Aquazone Silver and Copper Circular Print Black Part 3068bpr9881 Element 4113930 ×3
  • Tile 2 x 2 with Blue Screen, Silver and Red Panel Print Black Part 3068bpr0059 Element 82117 ×2
  • Tile 2 x 2 with Yellow Arrow without Border Print Black Part 3068bpr0021 Element 81152 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×2
  • Tool Chainsaw / Drill Body Black Part 2516 Element 6562846 or 4514341 ×2
  • Wedge Plate 4 x 4 Wing Left Black Part 3936 Element 4280156 or 4189084 ×1
  • Wedge Plate 4 x 4 Wing Right Black Part 3935 Element 4280157 or 4189086 ×1

Yellow 64 pieces

  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×7
  • Brick 1 x 8 with Bottom Tubes and 3 Lowered Cross Supports Yellow Part 3008b ×4
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×6
  • Brick 2 x 4 x 2 with Holes on Sides Yellow Part 6061 ×2
  • Brick Arch 1 x 6 x 2 - Thick Top with Reinforced Underside Yellow Part 3307 Element 330724 ×2
  • Brick Round 1 x 1 Open Stud Yellow Part 3062b Element 306844 or 306224 ×2
  • Brick Sloped 33° 3 x 2 with Divers Bubbles Print Yellow Part 3298pr0038 Element 4110062 ×1
  • Brick Sloped 45° 2 x 2 with Dark Screen and Blue Controls Print (Aquazone Hydronauts) Yellow Part 3039pr9985 Element 4113929 ×3
  • Brick Sloped 45° 3 x 4 Double / 33° Yellow Part 4861 Element 4258405 or 486124 ×1
  • Brick Special Octagonal 2 x 2 x 3 1/3 with Side Studs Yellow Part 6042 Element 4247901 or 604224 ×11
  • Brick Special Octagonal 2 x 3 x 1 2/3 Sloped Yellow Part 6032 Element 4247914 or 603224 ×2
  • Brick Wedged, Sloped 3 x 3 x 2 Facet Top Yellow Part 2463 Element 246324 ×2
  • Fence Lattice 1 x 4 x 1 Yellow Part 3633 Element 4190509 or 363324 ×2
  • Panel 1 x 2 x 2 [Hollow Studs] Yellow Part 4864b Element 4113020 ×2
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×3
  • Plate 2 x 6 Yellow Part 3795 Element 379524 ×1
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Yellow Part 3794a ×4
  • Propeller Housing Yellow Part 6040 Element 604024 ×2
  • Slope 45° 4 x 4 Double with Hinge Yellow Part 4857 Element 4113866 or 485724 ×1
  • Tile 1 x 2 with Blue Windows and Bubbles Print Yellow Part 3069bpr0057 Element 4113928 ×4
  • Tile 2 x 2 with Groove Yellow Part 3068b Element 6388487 or 306824 ×2

Light Gray 49 pieces

  • Brick 2 x 2 Light Gray Part 3003 Element 4103591 or 300352 ×1
  • Brick 2 x 2 Corner Light Gray Part 2357 Element 235752 or 235702 ×2
  • Brick 2 x 3 Light Gray Part 3002 Element 300252 or 300202 ×1
  • Brick Round 2 x 2 with Axle Hole Light Gray Part 3941 Element 614302 or 394102 ×3
  • Brick Sloped 33° 3 x 2 Light Gray Part 3298 Element 329802 ×2
  • Brick Sloped 45° 2 x 2 Light Gray Part 3039 Element 303902 ×3
  • Brick Special 1 x 2 with Pin Light Gray Part 2458 Element 245802 ×1
  • Hinge Brick 1 x 2 Base Light Gray Part 3937 Element 393702 ×2
  • Hinge Tile 1 x 4 Light Gray Part 4625 Element 4256575 or 462502 ×4
  • Hose, Pneumatic 4mm D. 19L / 15.2cm Light Gray Part 5102c19 Element 4107576 or 4107201 ×2
  • Magnet Holder 2 x 3 Light Gray Part 2607 Element 4113865 ×2
  • Minifig Footwear Flipper [Thin] Light Gray Part 59275 ×2
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×1
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×1
  • Plate 1 x 6 Light Gray Part 3666 Element 366602 ×1
  • Plate 2 x 2 Corner Light Gray Part 2420 Element 242052 or 242002 ×6
  • Plate 2 x 8 Light Gray Part 3034 Element 303402 ×1
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×4
  • Tile 1 x 4 with Groove Light Gray Part 2431 Element 243102 ×4
  • Wedge Plate 6 x 6 Cut Corner Light Gray Part 6106 Element 610602 ×2
  • Wedge Plate 8 x 4 Wing Left Light Gray Part 3933 Element 393302 ×1
  • Wedge Plate 8 x 4 Wing Right with Stud Notch Light Gray Part 3934 Element 393402 ×1
  • Wedge, Plate 16 x 14 Shuttle Light Gray Part 6219 Element 4113867 ×2

Trans-Green 25 pieces

  • Box 2 x 2 x 2 Door with Slot Trans-Green Part 4346 Element 4109976 ×3
  • Box 2 x 2 x 2 [Hollow Studs] Trans-Green Part 4345b Element 4109977 ×3
  • Brick Round 1 x 1 Open Stud Trans-Green Part 3062b Element 6514234 or 6238046 ×6
  • Equipment Suction Cup Gun Trans-Green Part 71594c01 Element 4114129 ×2
  • Hinge Panel 2 x 4 x 3 1/3 with Silver and Black Grid Print Trans-Green Part 2582pr0004 Element 4114159 ×2
  • Propeller 3 Blade 3 Diameter with Axle Cross Trans-Green Part 6041 Element 4109974 ×5
  • Windscreen 10 x 10 x 4 Octagonal Canopy Trans-Green Part 2598 Element 4113864 ×1
  • Windscreen 6 x 4 x 2 Canopy Trans-Green Part 4474 Element 4113868 or 3006648 ×2
  • Windscreen 6 x 6 Octagonal Canopy with Axle Hole and Hydronauts Print Trans-Green Part 2418bpr0001 Element 4110063 ×1

Blue 13 pieces

  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×5
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×1
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×6
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×1

Trans-Neon Orange 8 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Neon Orange Part 6141 Element 6240218 or 3005747 ×8

Chrome Silver 5 pieces

  • Dish 2 x 2 x 2/3 Light Reflector Chrome Silver Part 71128 Element 71128 ×2
  • Rock 1 x 1 Crystal 5 Point Chrome Silver Part 30385 Element 4119342 ×1
  • Weapon Harpoon [4 Grooves on Shaft] Chrome Silver Part 57467 ×2

Red 4 pieces

  • Brick 1 x 3 Red Part 3622 Element 362221 ×4

White 2 pieces

  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×2

Dark Gray 1 piece

  • Brick Special 2 x 2 with 2 Pins and Axle Hole Dark Gray Part 30000 Element 3000027 ×1

Minifigures 4 figures

  • Stingray 1 Minifigure, checked as a whole figure ×1
  • Hydronaut 2 Minifigure, checked as a whole figure ×1
  • Hydronaut 3 Minifigure, checked as a whole figure ×1
  • Hydronaut 1 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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