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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.

SUPERPOWERED Challenge Kit

Checking

45820 SUPERPOWERED Challenge Kit

2,169 pieces in 344 part and color combinations, plus 2 minifigures.

LEGO counts 2,187 pieces. This inventory comes from a separate parts catalog and lists 2,179, including the 10 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.

Every bag and the box. Shake out each bag, check its corners and seams, and look inside the empty box.
Inside what you have built. Small pieces lodge inside tubes, under plates and between studs. Turn the model over and look.
The last few steps. Compare each recent step with its parts callout. A piece used in the wrong place earlier leaves you one short later.
Look-alike colors. 16 parts in this set come in two colors that are easy to mix up; they are listed below.
The spare pieces. Many sets include a few extra small pieces. Check them before you order a replacement.
The floor and your building area. Check under furniture, the chair and the edges of your building surface.

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.

Plate 1 x 1 Red ×2 Trans-Red ×2 Trans-Red is see-through: hold the piece up to a light.
Brick Round 2 x 2 with Axle Hole White ×8 Trans-Clear ×2 Trans-Clear is see-through: hold the piece up to a light.
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) White ×8 Trans-Clear ×4 Trans-Clear is see-through: hold the piece up to a light.
Plate 1 x 2 White ×8 Trans-Clear ×4 Trans-Clear is see-through: hold the piece up to a light.
Tile Round 1 x 1 White ×1 Trans-Clear ×2 Trans-Clear is see-through: hold the piece up to a light.
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black ×4 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.

10 more look-alike pairs

Technic Beam 1 x 3 Thick Black ×4 Dark Bluish Gray ×7 Black is darker than Dark Bluish Gray.
Technic Beam 1 x 5 Thick Black ×10 Dark Bluish Gray ×19 Black is darker than Dark Bluish Gray.
Technic Beam 1 x 7 Bent (4 - 4) Thick Black ×9 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.
Technic Beam 1 x 9 Thick Black ×1 Dark Bluish Gray ×20 Black is darker than Dark Bluish Gray.
Technic Beam 3 x 3 T-Shape Thick Black ×2 Dark Bluish Gray ×13 Black is darker than Dark Bluish Gray.
Technic Beam 3 x 5 L-Shape Thick Black ×2 Dark Bluish Gray ×5 Black is darker than Dark Bluish Gray.
Technic Brick 1 x 6 [5 Pin Holes] Black ×4 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.
Technic Connector Beam 3 x 3 Black ×2 Dark Bluish Gray ×10 Black is darker than Dark Bluish Gray.
Technic Panel 5 x 11 x 1 Black ×2 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.
Technic Pin Connector Round 1L [Beam] Black ×2 Dark Bluish Gray ×5 Black is darker than Dark Bluish Gray.

Piece checklist

Bricks Round and Cones 33 pieces

Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end Lime Part 25214 Element 6327441 ×4
Brick Round 4 x 4 Centre Hole Red Part 87081 Element 4610843 ×6
Brick Round 2 x 2 with Axle Hole Trans-Clear Part 3941 Element 6514281 or 6273152 Also in White ×2
Brick Round 1 x 1 Open Stud White Part 3062b Element 6619283 or 306201 ×8
Brick Round 2 x 2 Dome Top, Hollow Stud White Part 30367c Element 4216652 or 4124120 ×4
Brick Round 2 x 2 Truncated Cone White Part 98100 Element 6609536 or 4649167 ×1
Brick Round 2 x 2 with Axle Hole White Part 3941 Element 6601920 or 614351 Also in Trans-Clear ×8

Bricks Sloped 32 pieces

Brick Sloped 30° 1 x 2 x 2/3 Lime Part 85984 Element 6025026 ×4
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Clear Part 54200 Element 6245250 or 4244362 Also in White ×4
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) White Part 54200 Element 6550179 or 4504369 Also in Trans-Clear ×8
Brick Sloped 33° 3 x 1 White Part 4286 Element 6632142 or 428601 ×4
Brick Sloped 45° 2 x 1 with Bottom Pin White Part 3040b Element 6552115 or 4121932 ×4
Brick Sloped Inverted 33° 3 x 1 with Internal Stopper and No Front Stud Connection White Part 4287c Element 6552111 or 428701 ×4
Brick Sloped Inverted 45° 2 x 1 White Part 3665 Element 6552106 or 366501 ×4

Tiles Special 24 pieces

Tile Special 1 x 2 Grille with Bottom Groove White Part 2412b Element 6601902 or 241201 ×16
Tile Special 2 x 2 with Bar, Hollow Stud with Stop Ring (Flag Pole) White Part 98549 Element 6170709 or 4649222 ×6
Tile Special 2 x 2 with Top Pin [Squared Holes] White Part 49153 Element 6313138 ×2

Plates Round Curved and Dishes 22 pieces

Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Bluish Gray Part 4032a Element 4211475 ×4
Plate Round 1 x 1 with Solid Stud Orange Part 6141 Element 4157103 ×2
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Clear Part 2654 Element 6581772 or 6163901 ×2
Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 ×12
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) White Part 4032a Element 6601914 or 403201 ×1
Plate Round 1 x 1 with Open Stud Yellow Part 85861 Element 6168644 or 6050850 ×1

Bricks Special 18 pieces

Brick Special 1 x 2 Palisade [aka Log] Dark Brown Part 30136 Element 4519970 ×2
Brick Special 1 x 2 with Pin - Bottom Stud Holder Light Bluish Gray Part 44865 Element 6321770 ×4
Brick Special 1 x 1 with Stud on 1 Side White Part 87087 Element 6550190 or 4558952 ×4
Brick Special 1 x 2 with Grille White Part 2877 Element 6552093 or 287701 ×8

Bricks 16 pieces

Brick 2 x 2 without Inside Ridges Trans-Clear Part 6223 Element 6514093 or 6239418 ×2
Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×8
Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×6

Plants & Trees 12 pieces

Plant, Flower, Plate Round 1 x 1 with 5 Petals White Part 24866 Element 6206149 ×4
Plant, Leaves 4 x 3 White Part 2423 Element 6268821 or 6135500 ×4
Plant, Flower, Plate Round 1 x 1 with 5 Petals Yellow Part 24866 Element 6299813 ×4

Technic Bushes 9 pieces

Technic Bush Black Part 3713 Element 6332148 or 6210506 ×2
Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 ×3
Technic Bush Red Part 3713 Element 6271820 or 4227155 ×1
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 ×3

Hinges, Arms and Turntables 8 pieces

Turntable 2 x 2 Plate - Top Light Bluish Gray Part 3679 Element 4540203 or 4495467 ×2
Hinge Brick 1 x 2 Base White Part 3937 Element 6619287 or 393701 ×2
Hinge Brick 2 x 2 Top Plate Thin White Part 6134 Element 6548272 or 4612342 ×2
Turntable 2 x 2 Plate, Base White Part 3680 Element 368001 ×2

Plates Wedged 8 pieces

Wedge Plate 4 x 2 Left White Part 41770 Element 6552119 or 4161326 ×2
Wedge Plate 4 x 2 Right White Part 41769 Element 6552118 or 4160857 ×6

Technic Gears 8 pieces

Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×2
Technic Gear Rack 1 x 13 with Axle and Pin Holes Black Part 64781 Element 6302830 or 4540906 ×1
Technic Gear 28 Tooth Double Bevel Light Bluish Gray Part 46372 Element 6259270 ×4
Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] Tan Part 18575 Element 6346517 or 6084724 ×1

Technic Special 6 pieces

Technic Tooth 1 x 3 with Axle Hole [Hollow Underside] Black Part 48267 Element 6288220 ×1
Technic Plate Rotor 3 Blade with Smooth Ends, 6 Studs, 1 Bottom Ridge (Propeller) Light Bluish Gray Part 51138 Element 6307999 ×2
Technic Ball Joint Red Part 32474 Element 4290714 or 4178640 ×3

Bricks Wedged 4 pieces

Brick Wedged, Curved Triple 4 x 4 x 2/3, 2 Studs with 'SUPER POWERED' Print White Part 45677pr0036 Element 6404664 ×4

Minifig Accessories 4 pieces

Equipment Laptop Black Part 62698 Element 6087083 or 4527063 ×1
Game Controller / Weapon Hilt with Black Buttons Pattern White Part 65080pat0001 Element 6285528 ×1
Tap 1 x 1 without Hole in Spout White Part 4599b Element 459901 ×2

Windows and Doors 4 pieces

Window 1 x 2 x 3 Flat Front White Part 60593 Element 6468341 or 4536521 ×4

Energy Effects 3 pieces

Wave / Flame Rounded with Base Rim Glitter Trans-Light Blue Part 6126b Element 6167742 or 6093745 ×1
Wave / Flame Rounded with Base Rim Trans-Orange Part 6126b Element 6167741 or 4261397 ×1
Wave / Lightning Angular, Single Trans-Yellow Part 27256 Element 6211795 ×1

Flags, Banners and Signs 3 pieces

Road Sign Clip-on 2 x 2 Round White Part 30261 Element 6317571 or 4116816 ×1
Road Sign Clip-on 2 x 2 Square [Thick Open O Clip] White Part 15210 Element 6323185 or 6046383 ×1
Road Sign Clip-on 2.2 x 2.667 Triangular with Open O Clip White Part 65676 Element 6317569 or 6287901 ×1

Pneumatics 3 pieces

Pneumatic Hose Connector with Axle Connector Dark Bluish Gray Part 99021 Element 6265669 or 6020189 ×3

String, Bands and Reels 3 pieces

String with End Studs 11L Overall Black Part 14226c11 Element 6096955 or 6037558 ×3

Tubes and Hoses 3 pieces

Zipline, 22L with 2 Connectors - Flexible Flat Silver Part 27965 Element 6210590 ×3

Bars, Ladders and Fences 2 pieces

Bar 1 x 4 x 2 with Studs White Part 4083 Element 408301 ×2

Bricks Curved 2 pieces

Brick Curved 2 x 1 No Studs [1/2 Bow] Red Part 11477 Element 6029946 ×2

Panels 2 pieces

Panel 1 x 2 x 1 [Rounded Corners] Dark Bluish Gray Part 4865b Element 6146225 ×1
Panel 1 x 4 x 1 with Rounded Corners [Thin Wall] Dark Bluish Gray Part 15207 Element 6092649 ×1

Tools 1 piece

Brick and Axle Separator v2.0 Orange Part 96874 Element 6240515 or 4654448 ×1

Windscreens and Fuselage 1 piece

Windscreen 3 x 4 x 1 1/3 Large Glass Surface Trans-Brown Part 57783 Element 6507931 or 6247359 ×1

Minifigures 2 figures

Super Hero, Dark Green Torso, Dark Azure Legs, Red Hair, Cape Minifigure, checked as a whole figure ×1
Super Hero, Bright Light Blue Torso, Orange Legs, Blue Hair, Cape 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.