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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.

Throne of Ultron

Checking

SDCC2015 Throne of Ultron

179 pieces in 53 part and color combinations, plus 4 minifigures.

LEGO counts 203 pieces. This inventory comes from a separate parts catalog and lists 196, including the 17 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.

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Piece checklist

Plates 34 pieces

  • Plate 4 x 12 Black Part 3029 Element 302926 ×3
  • Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 ×2
  • Plate 1 x 6 Dark Tan Part 3666 Element 6015424 ×2
  • Plate 2 x 8 Dark Tan Part 3034 Element 4246957 ×2
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×6
  • Plate 2 x 2 Corner Light Bluish Gray Part 2420 Element 4211353 ×2
  • Plate 1 x 1 Reddish Brown Part 3024 Element 4221744 ×3
  • Plate 1 x 4 Reddish Brown Part 3710 Element 4211190 ×2
  • Plate 1 x 2 Tan Part 3023 Element 4113917 or 302305 ×9
  • Plate 2 x 4 Tan Part 3020 Element 4114309 or 302005 ×2
  • Plate 2 x 6 Tan Part 3795 Element 4113993 or 379505 ×1

Tiles 26 pieces

  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×2
  • Tile 1 x 6 with Groove Black Part 6636 Element 663626 ×6
  • Tile 1 x 1 with Groove Dark Tan Part 3070b Element 6055172 ×2
  • Tile 1 x 2 with Groove Dark Tan Part 3069b Element 4496699 ×6
  • Tile 2 x 2 with Groove Dark Tan Part 3068b Element 4507045 or 4251986 ×4
  • Tile 1 x 1 with Groove Reddish Brown Part 3070b Element 4211288 ×6

Plates Round Curved and Dishes 25 pieces

  • Plate Round 1 x 1 with Solid Stud Reddish Brown Part 6141 Element 4216581 ×5
  • Plate Round 1 x 1 with Solid Stud Tan Part 6141 Element 4161734 or 614105 ×12
  • Plate Round 1 x 1 with Solid Stud Trans-Dark Blue Part 6141 Element 6514055 or 6240214 3 spares in the box ×6
  • Plate Round 1 x 1 with Solid Stud Trans-Neon Orange Part 6141 Element 6240218 or 3005747 1 spare in the box ×2

Plates Special 21 pieces

  • Bracket 1 x 2 - 1 x 2 Inverted Dark Bluish Gray Part 99780 Element 6000606 ×4
  • Plate Special 1 x 4 with 2 Studs, 3 Bottom Tubes Dark Bluish Gray Part 92593 Element 4598769 ×4
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Reddish Brown Part 60897 Element 6337003 or 6066142 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Reddish Brown Part 15573 Element 6092590 ×9
  • Plate Special 1 x 2 with Door Rail Reddish Brown Part 32028 Element 4645103 or 4541288 ×2

Bricks Round and Cones 19 pieces

  • Brick Round 1 x 1 Open Stud Dark Bluish Gray Part 3062b Element 4211090 ×3
  • Brick Round 2 x 2 Dome Bottom [Open Stud] Flat Silver Part 15395 Element 6102756 ×2
  • Cone 1 x 1 [Top Groove] Reddish Brown Part 59900 Element 4529242 ×3
  • Brick Round 1 x 1 Open Stud Trans-Clear Part 3062b Element 6514232 or 6223655 ×3
  • Brick Round 1 x 1 Open Stud Trans-Dark Blue Part 3062b Element 6514233 or 6238044 3 spares in the box ×6
  • Brick Round 1 x 1 Open Stud Trans-Neon Orange Part 3062b Element 6238676 or 4153989 1 spare in the box ×2

Plates Wedged 10 pieces

  • Wedge Plate 3 x 3 Cut Corner Tan Part 2450 Element 4208072 or 245005 ×8
  • Wedge Plate 4 x 4 Cut Corner Tan Part 30503 Element 6034852 or 4569474 ×2

Bricks Special 9 pieces

  • Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud] Black Part 60475b Element 6336977 or 4533771 ×2
  • Brick Special 1 x 2 with Masonry Brick Profile Dark Tan Part 98283 Element 4646577 ×4
  • Brick Special 1 x 1 with Headlight Tan Part 4070 Element 4280137 or 4118793 ×2
  • Brick Special 1 x 1 with Headlight Trans-Clear Part 4070 Element 6514231 or 6244796 ×1

Tiles Special 7 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Reddish Brown Part 2412b Element 4224243 ×6
  • Tile Special 1 x 2 with Handle Reddish Brown Part 2432 Element 4211219 ×1

Bricks 4 pieces

  • Brick 1 x 1 Dark Bluish Gray Part 3005 Element 4211098 ×3
  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×1

Hinges, Arms and Turntables 4 pieces

  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Light Bluish Gray Part 73983 Element 6102769 or 4219256 ×4

Supports, Girders and Cranes 4 pieces

  • Support Round 1 x 1 x 6 Solid Pillar Dark Bluish Gray Part 43888 Element 4180811 ×4

Bricks Sloped 3 pieces

  • Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] Reddish Brown Part 15672 Element 6075287 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Tan Part 54200 Element 4516055 or 4278069 ×1

Windows and Doors 3 pieces

  • Window 1 x 2 x 2 2/3 Pane Lattice Diamond with Rounded Top Black Part 30046 Element 6173105 or 3004626 ×2
  • Window 1 x 2 x 2 2/3 with Rounded Top Reddish Brown Part 30044 Element 4542131 or 4224625 ×1

Bars, Ladders and Fences 2 pieces

  • Antenna 1 x 4 with Flat Top Reddish Brown Part 3957b Element 4538252 ×2

Bricks Curved 2 pieces

  • Brick Arch 1 x 4 Tan Part 3659 Element 4550323 or 4542424 ×2

Energy Effects 2 pieces

  • Wave / Flame Rounded with Base Rim Trans-Orange Part 6126b Element 6167741 or 4261397 ×2

Minifig Shields, Weapons, & Tools 2 pieces

  • Weapon Gun / Pistol Flintlock Reddish Brown Part 2562 Element 4536847 ×2

Minifig Upper Body 2 pieces

  • Arm Mechanical with Clip [Thick Support] Reddish Brown Part 98313 Element 6276868 or 6006740 ×2

Minifigures 4 figures

  • Ultron / Ultimate Ultron Minifigure, checked as a whole figure ×1
  • Ultron Sentry with Neck Armor Minifigure, checked as a whole figure ×3

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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