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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.

Boeing 787 Dreamliner

Checking

10177 Boeing 787 Dreamliner

1,197 pieces in 161 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 436 pieces

  • Plate 2 x 4 Black Part 3020 Element 302026 Also in Dark Bluish Gray ×4
  • Plate 2 x 6 Black Part 3795 Element 379526 ×1
  • Plate 2 x 8 Black Part 3034 Element 303426 ×1
  • Plate 4 x 12 Black Part 3029 Element 302926 ×2
  • Plate 1 x 1 Blue Part 3024 Element 302423 ×64
  • Plate 1 x 10 Blue Part 4477 Element 447723 ×10
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×8
  • Plate 1 x 3 Blue Part 3623 Element 362323 ×12
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×21
  • Plate 1 x 6 Blue Part 3666 Element 366623 ×26
  • Plate 1 x 8 Blue Part 3460 Element 346023 ×14
  • Plate 2 x 12 Blue Part 2445 Element 244523 ×3
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×9
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×8
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×4
  • Plate 2 x 6 Blue Part 3795 Element 379523 ×7
  • Plate 2 x 8 Blue Part 3034 Element 303423 ×4
  • Plate 4 x 4 Blue Part 3031 Element 4243815 or 303123 ×2
  • Plate 4 x 6 Blue Part 3032 Element 303223 ×6
  • Plate 4 x 8 Blue Part 3035 Element 303523 ×3
  • Plate 6 x 8 Blue Part 3036 Element 303673 or 303623 ×5
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 Also in Black ×5
  • Plate 1 x 3 Light Bluish Gray Part 3623 Element 4211429 or 3623194 ×2
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×6
  • Plate 1 x 6 Light Bluish Gray Part 3666 Element 4211438 ×4
  • Plate 2 x 10 Light Bluish Gray Part 3832 Element 4211462 ×4
  • Plate 2 x 12 Light Bluish Gray Part 2445 Element 4211360 ×2
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×8
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×11
  • Plate 2 x 6 Light Bluish Gray Part 3795 Element 4211452 or 3795194 ×2
  • Plate 2 x 8 Light Bluish Gray Part 3034 Element 4211406 ×2
  • Plate 4 x 10 Light Bluish Gray Part 3030 Element 4211402 ×5
  • Plate 6 x 8 Light Bluish Gray Part 3036 Element 4211408 ×2
  • Plate 2 x 3 Red Part 3021 Element 302121 ×8
  • Plate 1 x 1 Trans-Clear Part 3024 Element 6513962 or 6252041 Also in White ×2
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 1 spare in the box Also in Trans-Clear ×44
  • Plate 1 x 10 White Part 4477 Element 6552113 or 6550148 ×18
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×17
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×24
  • Plate 1 x 6 White Part 3666 Element 6552107 or 6548265 ×10
  • Plate 1 x 8 White Part 3460 Element 6550141 or 346001 ×6
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×4
  • 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 2 x 8 White Part 3034 Element 6552101 or 303401 ×11
  • Plate 6 x 8 White Part 3036 Element 303651 or 303601 ×9
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×12

Bricks Sloped 183 pieces

  • Brick Sloped 33° 3 x 2 Black Part 3298 Element 329826 ×8
  • Brick Sloped Inverted 45° 2 x 1 Blue Part 3665 Element 366523 ×12
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Blue Part 3660 Element 366023 ×80
  • Brick Sloped Inverted 45° 6 x 1 Double with 1 x 4 Recessed Blue Part 52501 Element 4294738 ×6
  • Brick Sloped Inverted 75° 2 x 1 x 3 Blue Part 2449 Element 6567036 or 6110024 ×4
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Light Bluish Gray Part 3747b Element 4211570 ×6
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Clear Part 54200 Element 6245250 or 4244362 3 spares in the box Also in White ×52
  • Brick Sloped 45° 2 x 2 Trans-Clear Part 3039 Element 6514100 or 6244886 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) White Part 54200 Element 6550179 or 4504369 1 spare in the box Also in Trans-Clear ×4
  • Brick Sloped 33° 3 x 1 White Part 4286 Element 6632142 or 428601 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin White Part 3040b Element 6552115 or 4121932 ×8

Plates Wedged 157 pieces

  • Wedge Plate 3 x 2 Left Blue Part 43723 Element 4498156 or 4280150 ×23
  • Wedge Plate 3 x 2 Right Blue Part 43722 Element 4498155 or 4280149 ×23
  • Wedge Plate 3 x 4 with Stud Notches Blue Part 48183 Element 4240005 or 4215972 ×3
  • Wedge Plate 4 x 2 Left Blue Part 41770 Element 6430083 or 4161330 ×21
  • Wedge Plate 4 x 2 Right Blue Part 41769 Element 6430076 or 4160867 ×21
  • Wedge Plate 12 x 3 Left Light Bluish Gray Part 47397 Element 4208988 ×7
  • Wedge Plate 12 x 3 Right Light Bluish Gray Part 47398 Element 4209006 ×7
  • Wedge Plate 3 x 2 Left Light Bluish Gray Part 43723 Element 4211794 ×5
  • Wedge Plate 3 x 2 Right Light Bluish Gray Part 43722 Element 4211791 ×5
  • Wedge Plate 6 x 12 Left Light Bluish Gray Part 30355 Element 6535639 or 4211616 ×1
  • Wedge Plate 6 x 12 Right Light Bluish Gray Part 30356 Element 4211617 ×1
  • Wedge Plate 6 x 3 Left Light Bluish Gray Part 54384 Element 4282789 ×5
  • Wedge Plate 6 x 3 Right Light Bluish Gray Part 54383 Element 4282786 ×5
  • Wedge Plate 8 x 3, 22° Left Light Bluish Gray Part 50305 Element 4258275 or 4228302 ×3
  • Wedge Plate 8 x 3, 22° Right Light Bluish Gray Part 50304 Element 4258273 or 4228300 ×3
  • Wedge Plate 2 x 4 White Part 51739 Element 6552128 or 4249506 ×3
  • Wedge Plate 3 x 2 Left White Part 43723 Element 6552121 or 4179875 ×6
  • Wedge Plate 3 x 2 Right White Part 43722 Element 6552120 or 4179874 ×6
  • Wedge Plate 3 x 4 with Stud Notches White Part 48183 Element 4238793 or 4181037 ×1
  • Wedge Plate 6 x 3 Left White Part 54384 Element 4287708 ×4
  • Wedge Plate 6 x 3 Right White Part 54383 Element 4287707 ×4

Plates Special 116 pieces

  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Blue Part 3794a ×16
  • Bracket 1 x 2 - 2 x 2 Light Bluish Gray Part 44728 Element 6117967 or 6009014 ×3
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Light Bluish Gray Part 3794a ×2
  • Plate Special 4 x 4, Studs on One Edge Plain] Light Bluish Gray Part 6179 Element 4211837 ×10
  • Plate Special 4 x 6, Studs on 3 Edges Light Bluish Gray Part 6180 Element 4211838 ×12
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) White Part 3794a ×63
  • Plate Special 1 x 2 with Door Rail White Part 32028 Element 6550168 or 4249563 ×10

Tiles 112 pieces

  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×12
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×7
  • Tile 1 x 2 with Groove Blue Part 3069b Element 306923 ×5
  • Tile 1 x 4 with Groove Blue Part 2431 Element 243123 ×3
  • Tile 1 x 8 with Groove Blue Part 4162 Element 416223 ×2
  • Tile 1 x 2 with Groove Light Bluish Gray Part 3069b Element 4211414 ×8
  • Tile 1 x 4 with Groove Light Bluish Gray Part 2431 Element 4211356 or 2431194 ×6
  • Tile 1 x 6 with Groove Light Bluish Gray Part 6636 Element 4211549 ×8
  • Tile 2 x 2 with Groove Light Bluish Gray Part 3068b Element 4211413 ×10
  • Tile 1 x 1 with Groove White Part 3070b Element 6550138 or 307001 1 spare in the box ×3
  • 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 ×4
  • Tile 1 x 6 with Groove White Part 6636 Element 6548296 or 663601 ×40

Bricks 41 pieces

  • Brick 1 x 16 Black Part 2465 Element 246576 or 246526 ×2
  • Brick 1 x 2 Black Part 3004 Element 300426 ×6
  • Brick 2 x 10 Black Part 3006 Element 4617860 or 300626 ×1
  • Brick 2 x 4 Black Part 3001 Element 300126 ×1
  • Brick 2 x 6 Black Part 2456 Element 4181144 or 245626 ×2
  • Brick 1 x 1 Blue Part 3005 Element 300523 ×1
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×3
  • Brick 1 x 3 Blue Part 3622 Element 362223 ×5
  • Brick 1 x 4 Blue Part 3010 Element 301023 ×3
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×3
  • Brick 1 x 8 Blue Part 3008 Element 300823 ×7
  • Brick 1 x 2 without Bottom Tube Trans-Clear Part 3065 Element 6514262 or 6244904 ×2
  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×1
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×1
  • Brick 2 x 3 Yellow Part 3002 Element 300224 ×2
  • Brick 2 x 8 Yellow Part 3007 Element 4639693 or 300724 ×1

Technic Bricks 40 pieces

  • Technic Brick 1 x 12 [11 Pin Holes] Black Part 3895 Element 389526 ×6
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Blue Part 3700 Element 370023 ×1
  • Technic Brick 1 x 1 with Pin Hole Light Bluish Gray Part 6541 Element 4211535 ×2
  • Technic Brick 1 x 16 [15 Pin Holes] Light Bluish Gray Part 3703 Element 4211443 ×4
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Light Bluish Gray Part 32064b ×24
  • Technic Brick 4 x 4 with 2 x 2 Opening Light Bluish Gray Part 32324 Element 4211640 ×1

Technic Pins 23 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×22
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×1

Plates Round Curved and Dishes 18 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Blue Part 4032a Element 403223 ×4
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Blue Part 2654 Element 4278276 or 4208686 ×1
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Light Bluish Gray Part 2654 Element 4278273 or 4276273 ×6
  • Plate Round 1 x 1 with Solid Stud Red Part 6141 Element 614121 1 spare in the box Also in Trans-Red ×2
  • 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-Green Part 6141 Element 6514057 or 6240221 1 spare in the box ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box Also in Red ×3

Technic Axles 16 pieces

  • Technic Axle 4 Black Part 3705 Element 370526 ×5
  • Technic Axle 6 Black Part 3706 Element 370626 ×1
  • Technic Axle 8 Black Part 3707 Element 370726 ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×6
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×2
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×1

Bricks Wedged 12 pieces

  • Brick Wedged, Curved 6 x 2 Left, Inner Ridges Blue Part 41748 Element 6336561 or 6189186 ×2
  • Brick Wedged, Curved 6 x 2 Right, Inner Ridges Blue Part 41747 Element 6336562 or 6189187 ×2
  • Brick Wedged, Angled 3 x 2 Left White Part 6565 Element 4527764 or 656501 ×2
  • Brick Wedged, Angled 3 x 2 Right White Part 6564 Element 4526928 or 656401 ×2
  • Brick Wedged, Curved 6 x 2 Left, Inner Ridges White Part 41748 Element 6552117 or 4160124 ×2
  • Brick Wedged, Curved 6 x 2 Right, Inner Ridges White Part 41747 Element 4160101 ×2

Bricks Curved 8 pieces

  • Brick Curved Inverted 6 x 1 Blue Part 42023 Element 6214160 or 6031140 ×4
  • Brick Curved 6 x 1 White Part 42022 Element 4160387 ×4

Bricks Special 6 pieces

  • Brick Special 1 x 4 with 4 Studs on One Side Black Part 30414 Element 4162443 ×4
  • Brick Special 1 x 1 with Headlight White Part 4070 Element 6548267 or 407001 ×2

Technic Connectors 6 pieces

  • Technic Axle and Pin Connector Angled #3 - 157.5° Light Bluish Gray Part 32016 Element 6261387 or 4211552 ×6

Bricks Round and Cones 5 pieces

  • Brick Round 2 x 2 with Axle Hole Blue Part 3941 Element 614373 or 614323 ×1
  • Cone 2 x 2 x 2, Open Stud Blue Part 3942c Element 6092663 or 6022149 ×1
  • Cone 4 x 4 x 2 Hollow No Studs Blue Part 4742 Element 6209667 or 6077615 ×1
  • Cone 2 x 2 x 2, Open Stud White Part 3942c Element 6044601 or 6022158 ×2

Technic Beams 4 pieces

  • Technic Beam 1 x 9 Bent (6 - 4) Thick Black Part 6629 Element 6279881 or 4119800 ×2
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×2

Technic Bushes 4 pieces

  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×4

Minifig Heads 2 pieces

  • Minifig Head [Plain] [Blocked Open Stud] Yellow Part 3626b ×2

Tiles Special 2 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 ×2

Transportation - Sea and Air 2 pieces

  • Propeller 8 Blade 5 Diameter Light Bluish Gray Part 41530 Element 6035418 or 4159341 ×2

Wheels and Tyres 2 pieces

  • Wheel 43.2 x 26 Technic Racing Small with 3 Pinholes White Part 41896 Element 4498353 or 4238865 ×2

Hinges, Arms and Turntables 1 piece

  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Red Part 73983 Element 6102786 or 74230 ×1

Stickers 1 piece

  • Sticker Sheet for Set 10177-1 [No Color/Any Color] Part 58239 Element 4497921 ×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.

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