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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.

Deep Reef Refuge

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6441 Deep Reef Refuge

421 pieces in 174 part and color combinations, plus 5 minifigures.

LEGO counts 433 pieces. This inventory comes from a separate parts catalog and lists 446, including the 25 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 50 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×4
  • Plate 1 x 3 Black Part 3623 Element 362326 ×2
  • Plate 2 x 2 Black Part 3022 Element 302226 ×2
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×6
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×3
  • Plate 1 x 6 Blue Part 3666 Element 366623 ×3
  • Plate 2 x 2 Corner Blue Part 2420 Element 242073 or 242023 ×4
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×2
  • Plate 6 x 12 Blue Part 3028 Element 6186644 or 302823 ×1
  • Plate 6 x 6 Blue Part 3958 Element 4199519 or 395823 ×1
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×2
  • Plate 6 x 10 Light Gray Part 3033 Element 303302 ×1
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×1
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×4
  • Plate 1 x 6 White Part 3666 Element 6552107 or 6548265 ×4
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×1
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×1
  • Plate 4 x 4 White Part 3031 Element 6552127 or 4243812 ×4
  • Plate 4 x 6 White Part 3032 Element 303201 ×1
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×1
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×1
  • Plate 4 x 10 Yellow Part 3030 Element 4200024 or 4142103 ×1

Bricks 48 pieces

  • Brick 1 x 12 Blue Part 6112 Element 6305460 or 6175821 ×2
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×2
  • Brick 1 x 3 Blue Part 3622 Element 362223 ×2
  • Brick 1 x 4 Blue Part 3010 Element 301023 ×6
  • Brick 2 x 10 Blue Part 3006 Element 4615600 or 300623 ×1
  • Brick 1 x 4 Light Gray Part 3010 Element 301002 ×1
  • Brick 2 x 2 Light Gray Part 3003 Element 4103591 or 300352 ×6
  • Brick 2 x 4 Light Gray Part 3001 Element 4116259 or 300102 ×4
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×2
  • Brick 1 x 4 Red Part 3010 Element 301021 ×3
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×2
  • Brick 1 x 12 White Part 6112 Element 6548281 or 611201 ×2
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×4
  • Brick 1 x 3 White Part 3622 Element 6550143 or 362201 ×4
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×3
  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×3
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×1

Bricks Sloped 45 pieces

  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Blue Part 3747a Element 4500460 or 374723 ×4
  • Brick Sloped 33° 3 x 1 Light Gray Part 4286 Element 428602 ×4
  • Brick Sloped 45° 2 x 2 Light Gray Part 3039 Element 303902 ×2
  • Brick Sloped 75° 2 x 2 x 3 [Hollow Studs] Light Gray Part 3684 Element 4248057 or 4143978 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Light Gray Part 3660 Element 366002 ×1
  • Brick Sloped 33° 3 x 1 White Part 4286 Element 6632142 or 428601 ×2
  • 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 75° 2 x 1 x 3 with Open Stud White Part 4460a ×4
  • 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 ×10
  • Brick Sloped Inverted 45° 2 x 1 Yellow Part 3665 Element 366524 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Yellow Part 3660 Element 366024 ×7
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed Yellow Part 4871 Element 6215106 or 6064071 ×1

Hinges, Arms and Turntables 43 pieces

  • Arm Piece with Pin, 2 Fingers Black Part 6048a Element 604826 ×4
  • Arm Piece with Pin, 3 Fingers Black Part 6217 Element 4107590 or 4101774 ×2
  • Hinge Bar 12L with 3 Fingers and Open End Stud Black Part 2375 Element 4213757 or 4160951 ×1
  • Hinge Brick 1 x 2 Base Black Part 3937 Element 393726 ×7
  • Hinge Brick 1 x 4 [Lower] Blue Part 3831 Element 6320053 or 383123 ×1
  • Hinge Brick 1 x 4 [Upper] Blue Part 3830 Element 6392876 or 6320054 ×1
  • Arm Piece with Towball and Clip Dark Gray Part 30082 Element 4106573 ×2
  • Hinge Tile 1 x 2 1/2 with 2 Fingers on Top Light Gray Part 4531 Element 4256463 or 4163772 ×1
  • Turntable 2 x 2 Plate - Top Light Gray Part 3679 Element 367952 or 367902 ×1
  • Hinge Brick 1 x 4 [Lower] Red Part 3831 Element 6512257 or 6397573 ×1
  • Hinge Brick 1 x 4 [Upper] Red Part 3830 Element 6397607 or 6011464 ×1
  • Hinge Vehicle Roof 4 x 4 White Part 4213 Element 4256454 or 421301 ×4
  • Hinge Vehicle Roof Holder 1 x 4 White Part 4315 Element 4214079 or 4190507 ×6
  • Turntable 2 x 2 Plate, Base White Part 3680 Element 368001 ×1
  • Arm Piece with Towball Socket, 3 Fingers Yellow Part 3613 Element 4114148 ×2
  • Hinge Brick 1 x 2 Top Plate Thin Yellow Part 3938 Element 6078086 or 393824 ×7
  • Hinge Vehicle Roof Holder 1 x 4 Yellow Part 4315 Element 4253788 or 4239251 ×1

Plates Round Curved and Dishes 33 pieces

  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Black Part 2654 Element 4617551 or 4278359 ×7
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Green Part 4032a Element 403228 ×3
  • Dish 2 x 2 Inverted [Radar] Light Gray Part 4740 Element 474002 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Gray Part 4032a Element 403202 ×4
  • Plate Round 1 x 1 with Solid Stud Trans-Clear Part 6141 Element 6514052 or 6240030 1 spare 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 ×17

Plates Special 31 pieces

  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Black Part 3794a ×3
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Black Part 3839b Element 383926 ×1
  • Plate Special 1 x 2 with Ladder Black Part 4175 Element 6285241 or 6179557 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] Blue Part 4085c Element 408523 ×6
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 6mm] Blue Part 4623 Element 4280139 ×6
  • Plate Special 1 x 2 Side Handle [Free Ends] Red Part 2540 Element 4140585 or 254021 ×4
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] White Part 6019 Element 601951 or 601901 ×6
  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] White Part 4085c Element 408501 ×2
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Yellow Part 2444 Element 244424 ×2

Tiles 20 pieces

  • 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 2 x 2 with Groove Black Part 3068b Element 306826 ×1
  • Tile 1 x 1 with Groove Trans-Green Part 3070b Element 6581818 or 6254249 1 spare in the box ×1
  • Tile 1 x 1 with Groove Trans-Red Part 3070b Element 6581817 or 6254248 1 spare in the box ×5
  • Tile 1 x 2 with Blue and Yellow Control Panel Print White Part 3069bpr0047 Element 81908 ×1
  • Tile 1 x 2 with Red and Yellow Control Panel Print (Original) White Part 3069bpr0048 Element 4264367 or 81515 ×1
  • Tile 1 x 4 with Groove White Part 2431 Element 6548255 or 243101 ×4
  • Tile 1 x 4 with Stylised Radar Print White Part 2431pr0018 Element 82053 ×1
  • Tile 2 x 2 with Blue and Yellow Map Print White Part 3068bpr0058 Element 4189115 or 4160941 ×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

Panels 19 pieces

  • 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 ×4
  • Panel 4 x 3 x 3 with Porthole with Trans Light Blue Glass White Part 30080c01 Element 4106735 ×4
  • Panel 4 x 4 x 6 Corner Concave White Part 2467 Element 4106867 ×4
  • Panel 3 x 3 x 3 Corner Convex Yellow Part 30079 Element 4106572 ×2
  • Panel 4 x 3 x 3 with Porthole with Trans Light Blue Glass Yellow Part 30080c01 Element 4106582 ×4

Minifig Accessories 15 pieces

  • 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
  • Minifig Footwear Flipper [Thin] Red Part 59275 ×4
  • 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 ×2

Tiles Special 13 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×2
  • Tile Special 1 x 2 with Handle Black Part 2432 Element 243226 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove White Part 2412b Element 6601902 or 241201 ×7
  • Tile Special 1 x 2 with Handle White Part 2432 Element 243201 ×3

Supports, Girders and Cranes 11 pieces

  • Support Round 2 x 2 x 2 Stand with Reach-Through Center Hole Black Part 3940b Element 394026 ×10
  • Hook, Plate 1 x 2 with Crane Hook Left Light Gray Part 3127 Element 312702 ×1

Bricks Wedged 10 pieces

  • Brick Wedged 3 x 3 Facet Red Part 2462 Element 6598628 or 246221 ×4
  • Brick Wedged, Sloped Inverted 3 x 3 x 2 Facet White Part 2464 Element 246401 ×4
  • Brick Wedged, Sloped Inverted 6 x 6 x 1 Boat Bow White Part 2626 Element 262601 ×2

Plants & Trees 10 pieces

  • Plant, Flower Stem Green Part 3741 Element 6277589 or 374128 ×2
  • Plant, Leaves 6 x 5 Green Part 2417 Element 6266968 or 4613823 ×1
  • Plant, Sea Grass Green Part 30093 Element 4568215 or 4163425 ×7

Transportation - Sea and Air 9 pieces

  • Boat, Anchor - Single Top Hole Black Part 2564 Element 4566309 or 4189101 ×1
  • Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders] Black Part 3475b Element 347526 ×2
  • Propeller Housing Black Part 6040 Element 4144525 or 604026 ×1
  • Boat / Ship Wheel / Helm Brown Part 4790 Element 479025 ×1
  • Propeller 3 Blade 3 Diameter with Axle Cross Red Part 6041 Element 6173893 or 4163288 ×1
  • Boat Hull Section, Bow Top 6 x 6 x 1 White Part 2627 Element 4106576 or 262701 ×1
  • Tail 4 x 2 x 2 White Part 3479 Element 4107515 or 361301 ×2

Bars, Ladders and Fences 8 pieces

  • Antenna 1 x 4 with Rounded Top Black Part 3957a ×1
  • Fence Lattice 1 x 4 x 1 Black Part 3633 Element 4187209 or 363326 ×2
  • Lever Small Base with Light Gray Lever Blue Part 298c03 Element 73592 1 spare in the box ×1
  • Bar 1 x 6 [Closed Studs] Light Gray Part 6140 Element 614002 ×3
  • Antenna 8H Whip Red Part 2569 Element 256921 ×1

Bricks Special 5 pieces

  • Brick Special 1 x 1 with Handle Black Part 2921 Element 6170566 or 292126 ×2
  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×3

String, Bands and Reels 5 pieces

  • Chain 17L [21 Links] Black Part 30104 Element 4516718 or 4106729 ×1
  • Net 10 x 10 Square Black Part 71155 Element 6236969 or 6123960 ×1
  • String Cord Thin (0.5mm) 75cm Black Part 56823c75 Element 7909 ×1
  • String with End Studs 41L Overall Black Part 14226c41 Element 6096957 or 6074034 ×1
  • String Reel Winch 2 x 4 x 2 (Light Gray Drum) Light Gray Part 73037 Element 4109858 ×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 ×2
  • Animal, Octopus [Plain] Black Part 6086 Element 6096092 or 4273962 ×1
  • Animal, Dolphin (Normal Connection - With Axle Holder) Light Gray Part 6228b Element 4107174 ×1

Containers 4 pieces

  • Box 2 x 2 x 2 Door with Slot Yellow Part 4346 Element 6146456 or 4217750 ×2
  • Box 2 x 2 x 2 [Hollow Studs] Yellow Part 4345b Element 6146457 or 4258381 ×2

Minifig Shields, Weapons, & Tools 4 pieces

  • Weapon Dagger / Knife Chrome Silver Part 37 Element 70749 ×2
  • Weapon Spear Gun with Rounded Trigger and Thin Spear Base Yellow Part 30088 Element 4106936 ×2

Windscreens and Fuselage 4 pieces

  • Windscreen 2 x 6 x 2, Wide Top Trans-Light Blue Part 4176 Element 4287016 or 417642 ×1
  • Windscreen 6 x 6 x 3 Canopy Half Sphere with Hinge [Plain] Trans-Light Blue Part 30083 Element 4109878 or 4106876 ×3

Bricks Curved 3 pieces

  • Brick Arch 1 x 12 x 3 Light Gray Part 6108 Element 4163079 or 610802 ×1
  • Brick Arch 1 x 6 x 2 - Thick Top with Reinforced Underside White Part 3307 Element 330701 ×2

Bricks Round and Cones 3 pieces

  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×2
  • Cone 1 x 1 [No Top Groove] Yellow Part 4589 Element 458924 ×1

Transportation - Land 3 pieces

  • Seat / Chair 2 x 2 Blue Part 4079 ×2
  • Steering Stand 1 x 2 with Black Steering Wheel Blue Part 3829c01 Element 9566 ×1

Baseplates 2 pieces

  • Baseplate 16 x 32 Tan Part 3857 Element 4295401 or 4254866 ×2

Minifig Headwear 2 pieces

  • Helmet, Standard Black Part 2446 Element 6020155 or 4654642 ×2

Minifig Headwear Accessories 2 pieces

  • Headwear Accessory Visor / Diver's Mask Trans-Clear Part 30090 Element 4106551 ×2

Minifig Neckwear 2 pieces

  • Minifig Neckwear Scuba Airtank, No Bar Holder Light Gray Part 30091a Element 4106563 ×2

Stickers 2 pieces

  • Sticker Sheet 1 for Set 6441-1 [No Color/Any Color] Part 71449 Element 4106706 ×1
  • Sticker Sheet 2 for Set 6560-1 [No Color/Any Color] Part 71452 Element 4106596 ×1

Technic Connectors 2 pieces

  • Technic Pin Connector Round [No Slot] Yellow Part 75535 Element 75644 ×2

Flags, Banners and Signs 1 piece

  • Flag 2 x 2 Square with Diver Blue Print White Part 2335pr0003 Element 4106592 ×1

Plates Wedged 1 piece

  • Wedge Plate 7 x 6 Boat Bow without Stud Notches Blue Part 2625 ×1

Rock 1 piece

  • Rock Panel Triangular 3 x 8 x 7 Dark Gray Part 6083 Element 608327 ×1

Technic Pins 1 piece

  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×1

Tiles Round and Curved 1 piece

  • Tile Round 2 x 2 with Black Grid Large Print White Part 4150pr0014 Element 81571 ×1

Minifigures 5 figures

  • Marine Explorer, Red Shirt with Divers Logo, Black Cap, Glasses and Headset Minifigure, checked as a whole figure ×1
  • Marine Explorer, Red Shirt with Divers Logo, Black Cap, 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
  • Diver, Man, Red Wetsuit, Black Helmet with Mask, Airtank, Printed White Hair Minifigure, checked as a whole figure ×1
  • Marine Explorer, Red Shirt with Divers Logo, Black Cap, Yellow Life Vest, Headset 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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