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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.

Battle Arachnoid

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8112 Battle Arachnoid

123 pieces in 52 part and color combinations, plus 1 minifigure.

The official piece count includes the 8 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

Hinges, Arms and Turntables 18 pieces

  • Hinge Brick 1 x 2 Locking with 1 Finger Vertical End and 2 Fingers Vertical End, 9 Teeth Black Part 30386 Element 4167106 or 3038626 ×6
  • Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends Black Part 30552 Element 4158848 ×6
  • Hinge Plate 1 x 8 Locking with Angled Side Extensions, Rounded Plate Underside, 9 Teeth Black Part 30407 Element 4192456 ×6

Plates 13 pieces

  • Plate 2 x 4 Black Part 3020 Element 302026 ×1
  • Plate 1 x 2 Orange Part 3023 Element 4177932 or 4163009 ×1
  • Plate 1 x 4 Orange Part 3710 Element 4118782 ×4
  • Plate 2 x 2 Orange Part 3022 Element 4613982 or 4159007 ×2
  • Plate 2 x 4 Orange Part 3020 Element 4158355 or 4122468 ×1
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×4

Animal / Creature Body Parts 10 pieces

  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Orange Part 53451 Element 6270112 or 6096683 1 spare in the box ×6
  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Yellow Part 53451 Element 6270110 or 6014033 1 spare in the box ×4

Plates Special 10 pieces

  • Plate Special 1 x 2 Side Handle [Free Ends] Black Part 2540 Element 4140588 or 254026 ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Black Part 3794a ×1
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Black Part 2444 Element 244426 ×2
  • Plate Special 1 x 2 [Side Handle Closed Ends] Light Bluish Gray Part 48336 Element 4244627 ×1
  • Plate Special 1 x 2 Side Handle [Free Ends] Orange Part 2540 Element 4190164 or 4163269 ×2
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Yellow Part 4081b Element 6281992 or 4632569 ×2

Tiles Special 9 pieces

  • Tile Special 1 x 1 with Clip and Straight Tips Black Part 2555 Element 255526 ×6
  • Tile Special 1 x 2 Grille with Bottom Groove Orange Part 2412b Element 4125254 or 3933106 ×3

Tiles 8 pieces

  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×3
  • Tile 1 x 2 with Groove Orange Part 3069b Element 4188771 ×1
  • Tile 1 x 4 with Groove Orange Part 2431 Element 4160593 ×4

Bricks Round and Cones 7 pieces

  • Cone 1 x 1 [No Top Groove] Black Part 4589 Element 4518219 or 458926 ×2
  • Brick Round 2 x 2 with Axle Hole Trans-Neon Green Part 3941 Element 6273157 or 611649 ×1
  • Brick Round 2 x 2 x 1 2/3 Dome Top, Blocked Open Stud Trans-Neon Green Part 30151a Element 4506533 or 4144475 ×2
  • Cone 1 x 1 [No Top Groove] Trans-Neon Green Part 4589 Element 618849 or 458949 ×2

Bricks Sloped 6 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 ×2
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed Black Part 4871 Element 4188534 or 487126 ×1
  • Brick Sloped Inverted 45° 4 x 4 Double with 4 x 2 Recessed Black Part 4854 Element 4643321 or 4603490 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Orange Part 54200 Element 4504371 or 4248195 1 spare in the box ×2

Minifig Upper Body 6 pieces

  • Arm Mechanical with Clip [Thin Support] Black Part 53989 Element 4623154 or 4294996 ×6

Plates Round Curved and Dishes 5 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×3
  • Plate Round 1 x 1 with Solid Stud Orange Part 6141 Element 4157103 1 spare in the box ×2

Technic Connectors 4 pieces

  • Technic Pin Connector Plate with One Hole (Single on Bottom) Black Part 32529 Element 4144023 ×2
  • Technic Axle Connector Hub with 3 Axles at 120° Light Bluish Gray Part 57585 Element 4502595 ×2

Technic Pins 4 pieces

  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×2
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×1
  • Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 1 spare in the box ×1

Bars, Ladders and Fences 3 pieces

  • Lever Small Base with Black Lever Black Part 298c02 Element 73587 1 spare in the box ×2
  • Bar 1L with Clip Dark Bluish Gray Part 48729a Element 4222196 ×1

Minifig Shields, Weapons, & Tools 3 pieces

  • Tool Chainsaw / Drill Body Black Part 2516 Element 6562846 or 4514341 ×1
  • Tool Chainsaw Blade Dark Bluish Gray Part 6117 Element 6166069 or 4211048 ×2

Bricks Curved 2 pieces

  • Brick Curved 3 x 1 No Studs Orange Part 50950 Element 4251969 ×2

Bricks Special 2 pieces

  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×2

Energy Effects 2 pieces

  • Wave / Flame Rounded with Base Pegs Trans-Neon Orange Part 6126a ×2

Flags, Banners and Signs 2 pieces

  • Flag 2 x 2 Trapezoid with Flat Area between Clips Black Part 44676 Element 4184617 ×2

Minifig Accessories 2 pieces

  • Tap 1 x 1 with Hole in Spout Black Part 4599a ×2

Technic Axles 2 pieces

  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×2

Technic Bricks 2 pieces

  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Black Part 32064b ×2

Minifig Heads 1 piece

  • Minifig Head Skeleton, Standard Skull Print White Part 3626bpr0895 Element 6008095 or 82359 ×1

Stickers 1 piece

  • Sticker Sheet for Set 8112-1 [No Color/Any Color] Part 62018a Element 4520938 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 5 x 2 x 1 2/3 Trans-Brown Part 6070 Element 4204624 ×1

Minifigures 1 figure

  • Devastator with Pearl Light Gray Torso and Red Eyes 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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