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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.

Brainiac Attack

Checking

76040 Brainiac Attack

161 pieces in 72 part and color combinations, plus 4 minifigures.

The 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.

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Piece checklist

Plates 22 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 2 x 10 Black Part 3832 Element 383226 ×3
  • Plate 2 x 4 Black Part 3020 Element 302026 ×3
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×2
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×3
  • Plate 1 x 2 Trans-Yellow Part 3023 Element 6514002 or 6240211 ×2
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×4
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×3

Bricks Sloped 17 pieces

  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Black Part 61409 Element 4541191 ×2
  • Brick Sloped 30° 1 x 2 x 2/3 Black Part 85984 Element 4548180 ×4
  • Brick Sloped 33° 3 x 2 Dark Bluish Gray Part 3298 Element 4211106 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Light Bluish Gray Part 54200 Element 4521921 or 4244372 ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) White Part 54200 Element 6550179 or 4504369 ×4
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed White Part 4871 Element 4173943 or 487101 ×1

Bricks Round and Cones 14 pieces

  • Brick Round 2 x 2 [Grill] Black Part 92947 Element 6024730 ×1
  • Brick Round Corner 4 x 4 Macaroni Wide with 3 Studs Light Bluish Gray Part 48092 Element 6452524 or 4215472 ×4
  • Brick Round Corner 6 x 6 with 33° Slope and Facet Cutout Light Bluish Gray Part 95188 Element 6588816 or 6063878 ×2
  • Cone 1 x 1 [Top Groove] Light Bluish Gray Part 59900 Element 4529241 ×5
  • Cone 1 x 1 [Top Groove] Trans-Bright Green Part 59900 Element 6514024 or 6337628 ×1
  • Brick Round 1 x 1 Open Stud Trans-Neon Green Part 3062b Element 6514237 or 6238675 ×1

Plates Round Curved and Dishes 14 pieces

  • Dish 2 x 2 Inverted [Radar] Black Part 4740 Element 474026 ×2
  • Plate Round 1 x 1 with Solid Stud Lime Part 6141 Element 4183133 ×4
  • Dish 2 x 2 Inverted [Radar] Trans-Dark Pink Part 4740 Element 6580376 or 6245302 ×2
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 ×4
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] White Part 2654 Element 6601843 or 6552259 ×2

Plates Special 13 pieces

  • Plate Special 1 x 2 with Handle on End [Closed Ends] Dark Bluish Gray Part 60478 Element 4521187 ×2
  • Plate Special 10 x 10 Octagonal with Hole Dark Bluish Gray Part 89523 Element 4583688 ×1
  • Plate Special 2 x 2 with Pin on Bottom Dark Tan Part 2476a Element 6606096 or 6276849 ×4
  • Bracket 1 x 2 - 2 x 2 Inverted Light Bluish Gray Part 99207 Element 4654580 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] Light Bluish Gray Part 2540 Element 4211632 ×2
  • Plate Special 1 x 2, Top Clip [Split] White Part 92280 Element 4598527 ×2

Technic Pins 13 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×2
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×6
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Dark Bluish Gray Part 11214 Element 6015356 ×2
  • Technic Pin 1/2 with 2L Bar Extension Light Bluish Gray Part 61184 Element 6347715 or 4520320 ×1
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×2

Animal / Creature Body Parts 12 pieces

  • Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End Section Flat Silver Part 40379 Element 6060833 ×6
  • Animal Body Part / Plant, Tail / Neck / Branch / Trunk, Middle Section with Pin, Round Pin Hole Flat Silver Part 40378 Element 6097639 ×6

Bricks Special 9 pieces

  • Brick Special 1 x 1 with Headlight Dark Bluish Gray Part 4070 Element 4211044 ×4
  • Brick Special 1 x 2 with Handle Dark Bluish Gray Part 30236 Element 4211128 ×2
  • Brick Special 1 x 2 Palisade [aka Log] Light Bluish Gray Part 30136 Element 4550325 or 4519968 ×3

Technic Bricks 8 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×5
  • Technic Brick 1 x 8 [7 Pin Holes] Black Part 3702 Element 370226 ×1
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Yellow Part 32064a Element 6206240 or 4233484 ×2

Technic Connectors 6 pieces

  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black Part 42003 Element 6273708 or 4200326 ×2
  • Technic Axle and Pin Connector Perpendicular Double Split Black Part 41678 Element 4162857 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Light Bluish Gray Part 32184 Element 6276969 or 4211621 ×2

Bricks 5 pieces

  • Brick 1 x 6 Lime Part 3009 Element 4537919 or 4271446 ×4
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×1

Plates Wedged 5 pieces

  • Wedge Plate 2 x 4 White Part 51739 Element 6552128 or 4249506 ×2
  • Wedge Plate 3 x 2 Left White Part 43723 Element 6552121 or 4179875 ×1
  • Wedge Plate 3 x 2 Right White Part 43722 Element 6552120 or 4179874 ×1
  • Wedge Plate 4 x 6 Cut Corners White Part 32059 Element 4508408 or 4117026 ×1

Bars, Ladders and Fences 4 pieces

  • Bar 4L (Lightsaber Blade / Wand) Trans-Neon Green Part 30374 Element 6507881 or 6170186 ×2
  • Lever Small Base with Black Lever Yellow Part 298c02 Element 74156 ×2

Technic Axles 3 pieces

  • Technic Axle 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×2
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×1

Bricks Wedged 2 pieces

  • Brick Wedged, Curved 10 x 3 Left Light Bluish Gray Part 50955 Element 4505087 ×1
  • Brick Wedged, Curved 10 x 3 Right Light Bluish Gray Part 50956 Element 4505088 ×1

Hinges, Arms and Turntables 2 pieces

  • Hinge Plate 2 x 2 Locking with 1 Finger on Top Light Bluish Gray Part 92582 Element 6265742 or 4666449 ×2

Tiles 2 pieces

  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×1
  • Tile 2 x 4 with Groove White Part 87079 Element 6548271 or 4560178 ×1

Wheels and Tyres 2 pieces

  • Wheel 31 x 15 Technic, 7 Pin Holes Light Bluish Gray Part 60208 Element 4511007 ×2

Bricks Curved 1 piece

  • Brick Curved 2 x 4 x 2/3 No Studs, with Bottom Tubes White Part 88930 Element 6552135 or 4583297 ×1

Large Buildable Figures 1 piece

  • Large Figure Weapon, Barrel with 2 Pin Holes and 3 Axle Holes Trans-Neon Green Part 98585 Element 6248914 or 4651747 ×1

Projectiles / Launchers 1 piece

  • Launcher, Minifig Stand Flexible (Super Jumper) Trans-Clear Part 18663 Element 6167835 or 6093683 ×1

Stickers 1 piece

  • Sticker Sheet for Set 76040-1 [No Color/Any Color] Part 20247 Element 6104011 or 6104007 ×1

Technic Beams Special 1 piece

  • Technic Beam Frame 5 x 7 with 3 x 5 Opening Thick Light Bluish Gray Part 64179 Element 4539880 ×1

Tiles Special 1 piece

  • Tile Special 1 x 2 with Handle Yellow Part 2432 Element 243224 ×1

Tubes and Hoses 1 piece

  • Flexible Ribbed Hose 8mm Ends 19L with Lime Green Centre Pattern Trans-Clear Part 57539pat0002 Element 6059315 or 4583980 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 8 x 8 x 3 Dome with Dual 2 Fingers - 7 Teeth Trans-Neon Green Part 95198 Element 6097601 ×1

Minifigures 4 figures

  • Supergirl with Bright Light Yellow Hair over Shoulder Minifigure, checked as a whole figure ×1
  • Martian Manhunter (J'onn J'onzz) with Blue Cape and Collar Minifigure, checked as a whole figure ×1
  • Brainiac in Black Outfit with Magenta Wires Minifigure, checked as a whole figure ×1
  • Superman in Blue Outfit 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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