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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.

Iron Man Mech Armor

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76203 Iron Man Mech Armor

127 pieces in 51 part and color combinations, plus 1 minifigure.

LEGO counts 130 pieces. This inventory comes from a separate parts catalog and lists 131, including the 4 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

Dark Bluish Gray 32 pieces

  • Bar 2L with Towball Dark Bluish Gray Part 22484 Element 6364352 or 6360117 ×2
  • Bracket 1 x 1 - 1 x 1 Inverted Dark Bluish Gray Part 36840 Element 6225494 ×4
  • Brick Curved Inverted 2 x 1 Dark Bluish Gray Part 24201 Element 6215212 ×4
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed Dark Bluish Gray Part 4871 Element 4211076 ×1
  • Launcher Trigger, Weapon Gun Trigger Dark Bluish Gray Part 69755 Element 6360675 1 spare in the box ×1
  • Plate Special 1 x 2 with 5.9mm Centre Side Towball Dark Bluish Gray Part 14417 Element 6414560 or 6338160 ×4
  • Plate Special 1 x 2 with 5.9mm Towball Socket and Towball Dark Bluish Gray Part 14419 Element 6414554 or 6338166 ×4
  • Plate Special 1 x 2 with End Towball Dark Bluish Gray Part 22890 Element 6370802 or 6338168 ×2
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Dark Bluish Gray Part 60478 Element 4521187 ×2
  • Plate Special 1 x 2, Top Clip [Open O] Dark Bluish Gray Part 44861 Element 6344754 ×2
  • Plate Special 2 x 2 with Only 2 studs Dark Bluish Gray Part 33909 Element 6309059 ×1
  • Technic Plate 2 x 4 [3 Holes] Dark Bluish Gray Part 3709 Element 4227398 ×3
  • Tile Special 2 x 2 Inverted Dark Bluish Gray Part 11203 Element 6013082 ×2

Dark Red 32 pieces

  • Arm Mechanical with Clip [Thick Support] Dark Red Part 98313 Element 6276866 or 6006738 ×2
  • Bracket 1 x 1 - 1 x 2 Inverted Dark Red Part 73825 Element 6359683 ×2
  • Bracket 2 x 2 with 1 x 2 Vertical Studs Dark Red Part 41682 Element 6359692 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Red Part 11477 Element 6173168 ×3
  • Brick Curved 2 x 2 x 2/3 Dark Red Part 15068 Element 6107758 ×2
  • Brick Curved 4 x 1 Double, No Studs Dark Red Part 93273 Element 6000752 ×2
  • Brick Sloped 30° 1 x 2 x 2/3 Dark Red Part 85984 Element 6083977 ×3
  • Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] Dark Red Part 15672 Element 6251611 ×4
  • Brick Wedged, Curved 2 x 2 with Stud Notches Dark Red Part 66956 Element 6312350 ×1
  • Plate 2 x 4 Dark Red Part 3020 Element 4539071 or 4528320 ×1
  • Plate Special 1 x 2 Rounded with 2 Open Studs Dark Red Part 35480 Element 6212040 ×4
  • Tile 1 x 1 with Groove Dark Red Part 3070b Element 4550169 or 4187196 1 spare in the box ×2
  • Tile Special 2 x 2 Corner with Cut Corner - Facet Dark Red Part 27263 Element 6364638 ×2
  • Tile Special 2 x 2 Inverted Dark Red Part 11203 Element 6296962 ×1
  • Tile Special 2 x 3 Pentagonal with Iron Man Suit, Triangle Arc Reactor Print Dark Red Part 22385pr0136 Element 6376560 ×1

Pearl Gold 20 pieces

  • Bar Holder with Clip Pearl Gold Part 11090 Element 6252838 or 6078364 ×6
  • Launcher, Plate Special 1 x 2 with Mini Blaster Square Pearl Gold Part 69754 Element 6345949 ×1
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Pearl Gold Part 61252 Element 6284379 or 4523160 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] Pearl Gold Part 2540 Element 6279731 ×2
  • Plate Special, 2 x 2 Studs and Handle, Closed Ends (Mech Chest Plate / Armor) Pearl Gold Part 27167 Element 6288459 or 6207061 ×1
  • Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] Pearl Gold Part 99563 Element 6207933 or 4651407 ×8

Trans-Light Blue 13 pieces

  • Dish 2 x 2 Inverted [Radar] Trans-Light Blue Part 4740 Element 6580378 or 6245307 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Light Blue Part 6141 Element 6514058 or 6240225 1 spare in the box ×9
  • Wave / Power Blast Rounded Energy with Bar Handle Trans-Light Blue Part 27393 Element 6581317 or 6353237 ×2

Light Bluish Gray 12 pieces

  • Bracket 1 x 1 - 1 x 1 Light Bluish Gray Part 36841 Element 6248078 or 6227012 ×4
  • Plate Special 1 x 2 5.9mm Centre Side Towball Socket Light Bluish Gray Part 14704 Element 6414561 or 6338165 ×2
  • Plate Special 1 x 2 5.9mm Towball Socket Light Bluish Gray Part 14418 Element 6414556 or 6338163 ×6

Dark Tan 8 pieces

  • Bracket 1 x 2 - 2 x 2 Inverted Dark Tan Part 99207 Element 6330148 ×1
  • Brick Curved Inverted 2 x 2 x 2/3 Dark Tan Part 32803 Element 6356427 ×2
  • Plate 1 x 2 Dark Tan Part 3023 Element 4528604 or 4497082 ×3
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Dark Tan Part 18674 Element 6132767 ×2

Opal Trans-Light Blue 3 pieces

  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Opal Trans-Light Blue Part 2654 Element 6581777 or 6350385 ×2
  • Windscreen 6 x 4 x 1 Hexagonal with Handle Opal Trans-Light Blue Part 27262 Element 6513951 or 6337994 ×1

Black 2 pieces

  • Panel 1 x 2 x 1 with Rounded Corners and Central Divider Black Part 93095 Element 6640376 or 6115086 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1

Dark Blue 2 pieces

  • Plate 1 x 2 Dark Blue Part 3023 Element 6554191 or 4528981 ×2

Tan 2 pieces

  • Bracket 1 x 1 - 1 x 2 Tan Part 79389 Element 6374151 ×2

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 76203-1 [No Color/Any Color] Part 87140 Element 6376553 ×1

Minifigures 1 figure

  • Iron Man Mark 42 Armor, Pearl Gold Legs 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.