Free tool

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 MK50

Checking

41604 Iron Man MK50

101 pieces in 41 part and color combinations.

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.

Show

Piece checklist

Dark Red 53 pieces

  • Brick 1 x 1 Dark Red Part 3005 Element 4541376 or 4209383 ×2
  • Brick 1 x 2 with Iron Man Armour Print Dark Red Part 3004pr0032 Element 6225844 ×1
  • Brick 1 x 4 Dark Red Part 3010 Element 6097586 or 6052777 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Red Part 11477 Element 6173168 ×4
  • Brick Curved 2 x 2 x 2/3 Dark Red Part 15068 Element 6107758 ×2
  • Brick Curved 3 x 1 No Studs Dark Red Part 50950 Element 4541546 or 4258311 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Dark Red Part 3660 Element 6052917 or 4541512 ×1
  • Brick Special 1 x 1 with Headlight Dark Red Part 4070 Element 4539092 or 4183878 ×4
  • Plate 1 x 2 Dark Red Part 3023 Element 4539097 or 4162582 ×11
  • Plate 2 x 2 Dark Red Part 3022 Element 4585479 or 4163160 ×1
  • Plate 2 x 2 Corner Dark Red Part 2420 Element 4585751 or 4541513 ×2
  • Plate 4 x 4 Dark Red Part 3031 Element 6134368 or 4613268 ×4
  • Plate Special 1 x 2 with Clip Horizontal on Side Dark Red Part 11476 Element 6313126 or 6186001 ×1
  • Plate Special 1 x 2 with Door Rail Dark Red Part 32028 Element 6186005 ×1
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Solid Anti-stud] Dark Red Part 99206 Element 6359716 or 6188829 ×1
  • Technic Plate Rotor 3 Blade with Smooth Ends and 6 Studs (Propeller) Dark Red Part 32125 Element 6225159 ×2
  • Tile 1 x 1 with Groove Dark Red Part 3070b Element 4550169 or 4187196 1 spare in the box ×4
  • Tile 1 x 2 with Groove Dark Red Part 3069b Element 4539090 or 4529548 ×3
  • Tile 1 x 4 with Iron Man Arc Reactor Print Dark Red Part 2431pr0117 Element 6225837 ×1
  • Tile 2 x 4 with Groove Dark Red Part 87079 Element 6186003 ×4

Light Bluish Gray 14 pieces

  • Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side Light Bluish Gray Part 22885 Element 6123809 ×14

Dark Tan 12 pieces

  • Brick 1 x 1 Dark Tan Part 3005 Element 6001824 or 4497070 ×2
  • Brick Curved 2 x 4 x 2/3 No Studs with Iron Man Mask Print Dark Tan Part 88930pr0014 Element 6224461 ×1
  • Plate 1 x 1 Dark Tan Part 3024 Element 4549436 or 4497084 1 spare in the box ×2
  • Plate 1 x 3 Dark Tan Part 3623 Element 6132768 or 4497086 ×2
  • Plate 2 x 2 Dark Tan Part 3022 Element 6047415 or 4497081 ×1
  • Plate Special 1 x 4 with 2 Studs, 3 Bottom Tubes Dark Tan Part 92593 Element 6146462 ×1
  • Tile 1 x 2 with Groove Dark Tan Part 3069b Element 4496699 ×2
  • Tile 1 x 4 with Groove Dark Tan Part 2431 Element 6175927 ×1

Trans-Light Blue 11 pieces

  • Plate 1 x 1 Trans-Light Blue Part 3024 Element 6513964 or 6252043 1 spare in the box ×6
  • Plate 1 x 2 Trans-Light Blue Part 3023 Element 6514007 or 6240222 ×3
  • Tile 1 x 1 with White Square Print Trans-Light Blue Part 3070bpr0162 Element 6533216 or 6490594 1 spare in the box ×2

Black 5 pieces

  • Bracket 2 x 2 - 2 x 2 Black Part 3956 Element 6254808 or 6019217 ×1
  • Plate 6 x 6 Black Part 3958 Element 395826 ×1
  • Plate Special 1 x 4 with 2 Studs, 3 Bottom Tubes Black Part 92593 Element 4599499 ×1
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×1
  • Tile 2 x 4 with Groove Black Part 87079 Element 4560182 ×1

Orange 2 pieces

  • Brick Round 2 x 2 with Axle Hole Orange Part 3941 Element 4141089 ×2

White 2 pieces

  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×2

Bright Pink 1 piece

  • Brick 2 x 2 Bright Pink Part 3003 Element 4550359 or 4245307 ×1

Green 1 piece

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Green Part 4032a Element 403228 ×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.