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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.

Batman & Super Angry Kitty Attack

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70817 Batman & Super Angry Kitty Attack

90 pieces in 45 part and color combinations, plus 3 minifigures.

The official piece count includes the 25 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 Special 15 pieces

  • Bracket 1 x 2 - 2 x 2 Inverted Black Part 99207 Element 6000650 ×6
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Black Part 60897 Element 6330189 or 4617547 ×1
  • Plate Special 1 x 4 with 2 Studs, 3 Bottom Tubes Black Part 92593 Element 4599499 ×1
  • Plate Special 2 x 2 with 2 Pin Holes Black Part 2817 Element 281726 ×1
  • Bracket 1 x 2 - 2 x 2 Dark Bluish Gray Part 44728 Element 6117972 or 6048854 ×2
  • Plate Special 2 x 2 with 1 Pin Hole [Complete Underside Rib] Dark Bluish Gray Part 10247 Element 6047417 ×2
  • Bracket 1 x 2 - 1 x 2 Light Bluish Gray Part 99781 Element 4654582 ×2

Plates 13 pieces

  • Plate 2 x 2 Black Part 3022 Element 302226 ×2
  • Plate 2 x 2 Corner Black Part 2420 Element 242026 ×2
  • Plate 2 x 4 Black Part 3020 Element 302026 ×4
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×2
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×2
  • Plate 4 x 4 Light Bluish Gray Part 3031 Element 4243797 or 4211403 ×1

Hinges, Arms and Turntables 10 pieces

  • Hinge Brick 1 x 2 Top Plate Thin Black Part 3938 Element 393826 ×2
  • Hinge Cylinder 1 x 3 Locking with 1 Finger and Technic Friction Pin with Round Hole Black Part 41532 Element 4159335 ×2
  • Hinge Brick 1 x 2 Base Dark Bluish Gray Part 3937 Element 4211066 ×2
  • Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 9 Teeth Light Bluish Gray Part 30553 Element 4222047 ×2
  • Hinge Cylinder 1 x 3 Locking with 1 Finger and 2 Fingers On Ends, with Hole, 9 Teeth Light Bluish Gray Part 30554b Element 4550251 or 4211663 ×2

Animal / Creature Body Parts 8 pieces

  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Flat Silver Part 53451 Element 6270108 or 4612901 1 spare in the box ×8

Plates Round Curved and Dishes 6 pieces

  • Plate Round 1 x 1 with Open Stud Black Part 85861 Element 6168646 or 6100627 1 spare in the box ×2
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Black Part 2654 Element 4617551 or 4278359 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×3

Bricks Special 4 pieces

  • Brick Special 1 x 1 with Stud on 1 Side Light Bluish Gray Part 87087 Element 4558953 ×2
  • Brick Special 1 x 2 with 2 Studs on 1 Side Light Bluish Gray Part 11211 Element 6015344 ×2

Minifig Shields, Weapons, & Tools 4 pieces

  • Weapon Batarang Black Part 98721 Element 4650620 1 spare in the box ×1
  • Weapon Gun / Pistol Two Barrel, 10 Ribs Black Part 95199 Element 4659662 ×1
  • Tool Grappling Hook Dark Bluish Gray Part 30192 Element 6270008 or 4211079 ×1
  • Weapon Gun Automatic Pistol with Top Clip Dark Bluish Gray Part 15445 Element 6191976 or 6055607 ×1

Technic Axles 4 pieces

  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×2
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×2

Technic Bricks 4 pieces

  • Technic Brick 1 x 2 [2 Pin Holes] Black Part 32000 Element 3200026 ×4

Technic Pins 4 pieces

  • Technic Pin 1/2 with 2L Bar Extension Light Bluish Gray Part 61184 Element 6347715 or 4520320 ×2
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×2

Tiles 4 pieces

  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×2
  • Tile 2 x 4 with Groove Dark Bluish Gray Part 87079 Element 4560184 ×1
  • Tile 1 x 4 with Groove Red Part 2431 Element 243121 ×1

Tiles Special 4 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Trans-Red Part 2412b Element 6250158 or 4190187 ×2

Bricks 2 pieces

  • Brick 1 x 3 Dark Bluish Gray Part 3622 Element 4211104 ×2

Bricks Round and Cones 2 pieces

  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×2

Technic Gears 2 pieces

  • Technic Knob Wheel Black Part 32072 Element 6284188 or 4248204 ×2

Bars, Ladders and Fences 1 piece

  • Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki Eye Trans-Red Part 58176 Element 6507867 or 6171762 ×1

Bricks Sloped 1 piece

  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Dark Bluish Gray Part 61409 Element 4540386 or 4521185 ×1

Panels 1 piece

  • Panel 1 x 4 x 1 with Rounded Corners [Thin Wall] Red Part 15207 Element 6046379 ×1

Tiles Round and Curved 1 piece

  • Tile Round 1 x 1 Trans-Brown Part 98138 Element 6514195 or 6274744 1 spare in the box ×1

Minifigures 3 figures

  • Skeleton, Robot (Robo-Skeleton) Minifigure, checked as a whole figure ×1
  • Batman, Black Suit, Black Cape and Cowl, Yellow Batman Logo, Black Headband Minifigure, checked as a whole figure ×1
  • Unikitty, Angry Kitty, Big Open Mouth 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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