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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.

Spider-Man Webquarters Hangout

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10784 Spider-Man Webquarters Hangout

137 pieces in 81 part and color combinations, plus 5 minifigures.

The official piece count includes the 18 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.

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 18 pieces

  • Plate 1 x 2 Blue Part 3023 Element 302323 ×1
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×4
  • Plate 2 x 6 Blue Part 3795 Element 379523 ×2
  • Plate 1 x 2 Bright Light Blue Part 3023 Element 6469765 or 6362254 ×1
  • Plate 2 x 2 Dark Purple Part 3022 Element 6047422 or 4224861 ×2
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×6
  • Plate 2 x 2 Lime Part 3022 Element 4613977 or 4537937 ×1
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×1

Plates Special 15 pieces

  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Bright Light Orange Part 60470b Element 6337271 or 6093459 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Bright Light Orange Part 87580 Element 6193972 ×1
  • Plate Special 1 x 4 with Angled Tubes Flat Silver Part 61072 Element 4632100 ×2
  • Bracket 2 x 2 with 1 x 2 Vertical Studs Light Bluish Gray Part 41682 Element 6258820 ×1
  • Plate Special 1 x 2 Side Handle [Free Ends] Light Bluish Gray Part 2540 Element 4211632 ×2
  • Plate Special 9 x 16 x 2/3 with 1 x 4 Recessed Medium Azure Part 18922 Element 6305834 ×1
  • Plate Special 1 x 2 [Side Handle Closed Ends] Red Part 48336 Element 4226876 ×2
  • Plate Special 8 x 9 x 2/3 with 1 x 4 Recessed Red Part 15624 Element 6384668 ×1
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] White Part 60470b Element 6347287 or 4556152 ×2
  • Plate Special 2 x 4 with Groove and Two Center Studs (Jumper) White Part 65509 Element 6550181 or 6315024 ×1

Bricks Curved 11 pieces

  • Brick Curved 3 x 1 No Studs Blue Part 50950 Element 4543998 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Pink Part 11477 Element 6132918 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Purple Part 11477 Element 6057390 ×2
  • Brick Curved 2 x 2 x 2/3 Red Part 15068 Element 6105976 ×2
  • Brick Curved 4 x 1 Double, No Studs Red Part 93273 Element 4633914 ×3

Wheels and Tyres 10 pieces

  • Tyre 24 x 14 Shallow Tread (Tread Small Hub), Band Around Center of Tread Black Part 89201 Element 6132299 or 4639695 ×4
  • Wheel Skateboard / Trolley Black Part 2496 Element 6223673 or 4569104 ×2
  • Wheel 18 x 14 with Pin Hole, Fake Bolts and Shallow Spokes Dark Purple Part 55981 Element 6327074 or 6187077 ×4

Bricks 9 pieces

  • Brick 2 x 4 Red Part 3001 Element 300121 ×1
  • Brick 1 x 2 x 3 with Bottom Stud Holder White Part 22886 Element 6548283 or 6153776 ×6
  • Brick 1 x 2 x 3 with Speakers, Music Notes Print White Part 22886pr0004 Element 6375576 ×1
  • Brick 2 x 3 White Part 3002 Element 6550133 or 300251 ×1

Bricks Sloped 8 pieces

  • Brick Sloped 10° 6 x 8 Dark Blue Part 4515 Element 6440326 or 6247207 ×1
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed Dark Bluish Gray Part 4871 Element 4211076 ×1
  • Brick Sloped 33° 3 x 1 Dark Purple Part 4286 Element 6331924 or 6264053 ×1
  • Brick Sloped 45° 2 x 1 with Bottom Pin Dark Purple Part 3040b Element 6109814 or 4225265 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin White Part 3040b Element 6552115 or 4121932 ×2
  • Brick Sloped 45° 2 x 2 White Part 3039 Element 6552103 or 303901 ×1

Minifig Accessories 7 pieces

  • Game Controller with Silver D-Pad and Joysticks, and Red and Blue Buttons Print Black Part 53118pr0001 Element 6275176 ×1
  • Musical Instrument Guitar Electric with Dark Azure Strings and White Stripes Print Dark Pink Part 11640pr0006 Element 6333996 ×1
  • Equipment Paint Palette with Yellow, Blue, Green and Red Paint Spots Print Medium Nougat Part 93551pr0001 Element 6345494 or 6062750 ×1
  • Sports Skateboard with Trolley Wheel Holders Orange Part 42511 Element 6155188 or 6029936 ×1
  • Equipment Cup / Mug [Plain] Red Part 3899 Element 389921 ×1
  • Equipment Paint Brush with Green Tip Pattern Reddish Brown Part 93552pat0002 Element 6359662 1 spare in the box ×1
  • Sports Basketball Net with Axle White Part 11641 Element 6269072 or 6150166 ×1

Plates Round Curved and Dishes 6 pieces

  • Plate Round 4 x 4 with Pin Hole Dark Pink Part 60474 Element 6133808 ×2
  • Plate 8 x 8 with Rounded End Medium Azure Part 41948 Element 6296050 ×2
  • Plate Round Corners 6 x 6 x 2/3 Circle with Reduced Knobs Red Part 66789 Element 6294705 ×2

Bricks Special 5 pieces

  • Brick Special 1 x 2 with Bar, Hand with 4 Fingers Dark Pink Part 80488 Element 6384732 ×2
  • Brick Special 4 x 10 x 1 With 2 Wedges, Pin Holes, 4 x 2 Recessed Center White Part 65186 Element 6384662 ×1
  • Slide Straight 4 x 6 x 6 White Part 27976 Element 6384666 ×2

Technic Bricks 5 pieces

  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Black Part 32064a Element 6178922 or 4233487 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] White Part 3700 Element 6619284 or 370001 ×4

Tiles 5 pieces

  • Tile 1 x 4 with Groove Blue Part 2431 Element 243123 ×3
  • Tile 1 x 2 with Keyboard/Piano Print White Part 3069bpr0278 Element 6293665 ×1
  • Tile 2 x 4 with Spider-Man (Peter Parker), Spin (Miles Morales), Ghost-Spider (Gwen Stacy) Print White Part 87079pr0266 Element 6375577 ×1

Tiles Special 5 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Flat Silver Part 2412b Element 4619636 Also in Light Bluish Gray ×4
  • Tile Special 1 x 2 Grille with Bottom Groove Light Bluish Gray Part 2412b Element 4211350 Also in Flat Silver ×1

Transportation - Sea and Air 4 pieces

  • Jet Engine Fan with 10 Blades and Technic Pin Black Part 46667 Element 6313481 or 6088638 ×2
  • Technic Cylinder 4 x 4 with Pin Holes and Centre Bar, Closed Sides on Bar Dark Pink Part 41531 Element 6384663 ×2

Windows and Doors 4 pieces

  • Door Frame Double 2 x 8 x 6 Blue Part 80400 Element 6384670 ×2
  • Door Frame 1 x 4 x 6 Type 2 Red Part 60596 Element 6262946 or 4550015 ×1
  • Glass for Window 1 x 4 x 6 with Computer Screen, Green Goblin Print Trans-Light Blue Part 57895pr0020 Element 6375579 ×1

Bricks Wedged 3 pieces

  • Brick Wedged, Curved 4 x 3 No Studs [Plain] Lime Part 64225 Element 6023954 ×2
  • Brick Wedged, Curved 4 x 3 No Studs with Ghost-Spider Face Print White Part 64225pr0012 Element 6375575 ×1

Animal / Creature Accessories 2 pieces

  • Insect Accessory, Spider Web, Dome Shaped with Bar, Clips Red Part 80487 Element 6369938 ×1
  • Insect Accessory, Spider Web, Dome Shaped with Bar, Clips White Part 80487 Element 6385237 ×1

Flags, Banners and Signs 2 pieces

  • Flag 2 x 2 Trapezoid with Flared Area between Clips Dark Purple Part 80324 Element 6385607 ×2

String, Bands and Reels 2 pieces

  • String with End Studs and Minifig Grips 21L Red Part 14210 Element 6385919 ×1
  • String with End Studs and Minifig Grips 21L White Part 14210 Element 6096959 or 6037448 ×1

Supports, Girders and Cranes 2 pieces

  • Support 2 x 2 x 10 Girder Triangular Vertical - Type 4 - 3 Posts, 3 Sections Blue Part 95347 Element 6384672 ×2

Technic Pins 2 pieces

  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 1 spare in the box ×2

Tiles Round and Curved 2 pieces

  • Tile Round 2 x 2 with Pepperoni Pizza Print Tan Part 14769pr1070 Element 6174830 ×2

Animals / Creatures 1 piece

  • Insect, Spider 1 x 1 with Spider-Man Eyes Print (Trace-E) Red Part 80483pr0001 Element 6473001 or 6375568 ×1

Bars, Ladders and Fences 1 piece

  • Curled Decorative Ornament / Plant Vine with Bar Trans-Light Blue Part 28870 Element 6210440 ×1

Bricks Round and Cones 1 piece

  • Brick Round 2 x 2 with Axle Hole Green Part 3941 Element 4251378 or 4239200 ×1

Containers 1 piece

  • Box / Crate with Handholds 3 x 4 x 1 2/3 Yellow Part 30150 Element 4599378 ×1

Hinges, Arms and Turntables 1 piece

  • Hinge Plate 1 x 4 Locking Dual 1 Finger Light Bluish Gray Part 44568 Element 6276045 or 4211840 ×1

Panels 1 piece

  • Panel 1 x 4 x 3 [Side Supports / Hollow Studs] Red Part 60581 Element 4558212 or 4248244 ×1

Plants & Trees 1 piece

  • Plant, Pumpkin Orange Part 51270 Element 6267125 ×1

Projectiles / Launchers 1 piece

  • Projectile, Large Figure Weapon, Zamor Sphere / Ball Red Part 54821 Element 4545430 ×1

Transportation - Land 1 piece

  • Vehicle Base, Brick Special 4 x 10 with 4 Pins Black Part 30076 Element 6352696 or 6023257 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 6 x 6 x 3 Canopy Half Sphere with Dual 2 Fingers with Spider-Man Face Print Red Part 50747pr0017 Element 6375580 ×1

Minifigures 5 figures

  • Spin / Spider-Man (Miles Morales), Medium Red Legs Minifigure, checked as a whole figure ×1
  • Green Goblin, Medium Legs Minifigure, checked as a whole figure ×1
  • Spider-Man (Spidey), Medium Legs Minifigure, checked as a whole figure ×1
  • Ghost-Spider / Spider-Gwen, Medium Legs Minifigure, checked as a whole figure ×1
  • Ms. Marvel, Medium Legs 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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