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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.

Shinkai 6500 Submarine

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21100 Shinkai 6500 Submarine

413 pieces in 100 part and color combinations.

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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Plates 104 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 Also in Dark Bluish Gray ×4
  • Plate 1 x 3 Black Part 3623 Element 362326 Also in Dark Bluish Gray ×3
  • Plate 2 x 12 Black Part 2445 Element 244526 ×4
  • Plate 2 x 2 Black Part 3022 Element 302226 ×2
  • Plate 2 x 3 Black Part 3021 Element 302126 Also in Dark Bluish Gray ×3
  • Plate 2 x 6 Black Part 3795 Element 379526 ×4
  • Plate 2 x 8 Black Part 3034 Element 303426 ×4
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 Also in Black ×1
  • Plate 1 x 3 Dark Bluish Gray Part 3623 Element 4211133 Also in Black ×1
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 ×1
  • Plate 2 x 2 Corner Dark Bluish Gray Part 2420 Element 4210635 ×1
  • Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 Also in Black ×4
  • Plate 2 x 10 Light Bluish Gray Part 3832 Element 4211462 ×2
  • Plate 6 x 10 Light Bluish Gray Part 3033 Element 4211405 ×3
  • Plate 1 x 2 Orange Part 3023 Element 4177932 or 4163009 ×10
  • Plate 1 x 4 Orange Part 3710 Element 4118782 ×3
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 ×4
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×11
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×4
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×7
  • Plate 1 x 6 White Part 3666 Element 6552107 or 6548265 ×12
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×1
  • Plate 2 x 2 Corner White Part 2420 Element 6548254 or 242051 ×6
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×1
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×6
  • Plate 6 x 6 White Part 3958 Element 6552116 or 4144012 ×2

Plates Round Curved and Dishes 71 pieces

  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 1 spare in the box ×1
  • Plate Round 1 x 1 with Solid Stud Light Bluish Gray Part 6141 Element 4211525 1 spare in the box ×19
  • Plate Round 1 x 1 with Solid Stud Red Part 6141 Element 614121 1 spare in the box ×7
  • Plate Round 1 x 1 with Solid Stud Trans-Clear Part 6141 Element 6514052 or 6240030 1 spare in the box Also in White ×16
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Clear Part 2654 Element 6581772 or 6163901 ×2
  • Dish 2 x 2 Inverted [Radar] White Part 4740 Element 6601845 or 474001 ×2
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 1 spare in the box Also in Trans-Clear ×23
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) White Part 4032a Element 6601914 or 403201 ×1

Tiles 49 pieces

  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×2
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×8
  • Tile 1 x 2 with Groove Light Bluish Gray Part 3069b Element 4211414 ×2
  • Tile 1 x 2 with Groove Orange Part 3069b Element 4188771 ×10
  • Tile 1 x 1 with Groove White Part 3070b Element 6550138 or 307001 1 spare in the box ×7
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×4
  • Tile 1 x 4 with Groove White Part 2431 Element 6548255 or 243101 ×6
  • Tile 1 x 6 with Groove White Part 6636 Element 6548296 or 663601 ×1
  • Tile 1 x 8 with Groove White Part 4162 Element 6552110 or 416201 ×2
  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×7

Bricks 26 pieces

  • Brick 1 x 1 Dark Bluish Gray Part 3005 Element 4211098 ×4
  • Brick 1 x 2 Dark Bluish Gray Part 3004 Element 4211088 ×5
  • Brick 1 x 3 Dark Bluish Gray Part 3622 Element 4211104 ×1
  • Brick 2 x 4 Dark Bluish Gray Part 3001 Element 4211085 ×3
  • Brick 1 x 3 Light Bluish Gray Part 3622 Element 4211428 ×8
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×2
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×1
  • Brick 2 x 2 Corner White Part 2357 Element 6552088 or 6548253 ×2

Bricks Special 25 pieces

  • Brick Special 1 x 1 Studs on 4 Sides Black Part 4733 Element 473326 ×3
  • Brick Special 1 x 4 with 4 Studs on One Side Dark Bluish Gray Part 30414 Element 4210725 ×4
  • Brick Special 2 x 2 with Pin and Axle Hole Dark Bluish Gray Part 6232 Element 6408023 or 4211046 ×2
  • Brick Special 1 x 1 with Stud on 1 Side Light Bluish Gray Part 87087 Element 4558953 ×2
  • Brick Special 1 x 2 with Pin Tan Part 2458 Element 4205105 or 4125270 ×6
  • Brick Special 1 x 1 with Headlight White Part 4070 Element 6548267 or 407001 ×8

Bricks Curved 24 pieces

  • Brick Curved 3 x 1 No Studs White Part 50950 Element 6548268 or 4249112 ×22
  • Brick Curved Inverted 6 x 1 White Part 42023 Element 4160403 ×2

Hinges, Arms and Turntables 20 pieces

  • Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends Black Part 30552 Element 4158848 ×6
  • Hinge Plate 1 x 2 Locking with 1 Finger on Side, with Groove Black Part 44567a Element 4185620 ×1
  • Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth Black Part 44302a Element 4183060 ×7
  • Hinge Brick 1 x 2 Base Light Bluish Gray Part 3937 Element 4211469 ×3
  • Hinge Brick 2 x 2 Top Plate Thin Light Bluish Gray Part 6134 Element 4211881 ×3

Plates Special 13 pieces

  • Bracket 2 x 2 - 2 x 2 Light Bluish Gray Part 3956 Element 6254807 or 6019212 ×1
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Light Bluish Gray Part 6019 Element 4211518 ×2
  • Bracket 1 x 2 - 2 x 2 White Part 44728 Element 6619296 or 6117940 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) White Part 3794b ×7
  • Plate Special 2 x 2 with Bar Frame Octagonal White Part 30033 Element 3003301 ×1

Bricks Sloped 12 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) White Part 54200 Element 6550179 or 4504369 1 spare in the box ×12

Technic Bricks 12 pieces

  • Technic Brick 1 x 4 [3 Pin Holes] Dark Bluish Gray Part 3701 Element 4213607 or 370127 ×1
  • Technic Brick 1 x 1 with Pin Hole Tan Part 6541 Element 4179771 or 654105 ×9
  • Technic Brick 1 x 6 [5 Pin Holes] White Part 3894 Element 389401 ×2

Bricks Round and Cones 10 pieces

  • Brick Round 1 x 1 Open Stud Trans-Clear Part 3062b Element 6514232 or 6223655 Also in White ×2
  • Brick Round 1 x 1 Open Stud White Part 3062b Element 6619283 or 306201 Also in Trans-Clear ×8

Bricks Wedged 10 pieces

  • Brick Wedged, Angled 4 x 2 Left White Part 41768 Element 4160343 ×3
  • Brick Wedged, Angled 4 x 2 Right White Part 41767 Element 4160325 ×3
  • Brick Wedged, Curved 6 x 2 Left, Inner Ridges White Part 41748 Element 6552117 or 4160124 ×1
  • Brick Wedged, Curved 6 x 2 Right, Inner Ridges White Part 41747 Element 4160101 ×1
  • Brick Wedged, Curved Inverted 6 x 2 Left White Part 41765 Element 6375978 or 6268056 ×1
  • Brick Wedged, Curved Inverted 6 x 2 Right White Part 41764 Element 6375977 or 6268055 ×1

Minifig Upper Body 6 pieces

  • Arm Mechanical Straight (Droid) [2 Clips at 90°] White Part 59230 Element 6056353 or 4505109 1 spare in the box ×4
  • Torso Mechanical, Battle Droid White Part 30375 Element 6550166 or 4533503 ×2

Technic Axles 6 pieces

  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×5

Technic Pins 6 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×3
  • Technic Pin 3/4 Dark Bluish Gray Part 32002 Element 32002199 or 4211050 1 spare in the box ×2
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×1

Bars, Ladders and Fences 4 pieces

  • Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip] Dark Bluish Gray Part 48729b Element 6278155 or 4579234 1 spare in the box ×4

Tiles Special 4 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×4

Technic Beams 3 pieces

  • Technic Beam 1 x 2 Thin Black Part 41677 Element 6338428 or 4167726 ×2
  • Technic Beam Triangle Thin [Type I] Black Part 2905 Element 4142543 or 290526 ×1

Technic Connectors 3 pieces

  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×1
  • Technic Pin Connector Plate with One Hole (Single on Bottom) Black Part 32529 Element 4144023 ×1
  • Technic Axle and Pin Connector Angled #3 - 157.5° Light Bluish Gray Part 32016 Element 6261387 or 4211552 ×1

Rock 2 pieces

  • Rock Panel Triangular 3 x 8 x 7 Dark Bluish Gray Part 6083 Element 4216709 ×2

Transportation - Sea and Air 2 pieces

  • Propeller 3 Blade 3 Diameter with Axle Cross Black Part 6041 Element 604126 ×1
  • Wing, Tail 4 x 1 x 3 Orange Part 2340 Element 4640159 ×1

Stickers 1 piece

  • Sticker Sheet for Set 21100-1 [No Color/Any Color] Part 98020 Element 4640189 ×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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