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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.

Rocket Mech Armor

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76243 Rocket Mech Armor

95 pieces in 48 part and color combinations, plus 1 minifigure.

The official piece count includes the 3 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

Black 26 pieces

  • Animal / Creature Body Part, Claw with Clip Black Part 3171 Element 6420198 ×4
  • Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End Black Part 47457 Element 6394979 or 4218575 ×4
  • Brick Curved 2 x 2, Two Top Studs Black Part 30165 Element 4200023 or 4113231 ×1
  • Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no stud Black Part 28192 Element 6267487 ×6
  • Brick Wedged, Curved 2 x 2 with Stud Notches Black Part 66956 Element 6308912 ×3
  • Launcher, Weapon Rapid Shooter Six Barrel, 2 Fingers Black Part 77257 Element 6360819 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×1
  • Plate Special 1 x 2 with 2 End Towballs Black Part 3170 Element 6416838 ×1
  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 1 spare in the box ×1
  • Technic Plate 1 x 5 with Smooth Ends, 4 Studs and Centre Axle Hole Black Part 32124 Element 6280168 or 4114689 ×2
  • Wheel Arch, Mudguard 3 x 4 with 2 x 2 Plate Black Part 28326 Element 6170597 ×1

Reddish Brown 18 pieces

  • Bar 4L (Lightsaber Blade / Wand) Reddish Brown Part 30374 Element 6116613 or 4262974 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Reddish Brown Part 54200 Element 4504376 or 4260486 1 spare in the box ×2
  • Plant, Bush 2 x 2 x 4 Reddish Brown Part 6064 Element 6649894 or 6423976 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Reddish Brown Part 60897 Element 6337003 or 6066142 ×4
  • Plate Special 1 x 2 [Side Handle Closed Ends] Reddish Brown Part 48336 Element 6236915 or 4551526 ×1
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Reddish Brown Part 60478 Element 6102975 ×1
  • Plate Special 2 x 3 with Rocks Reddish Brown Part 27261 Element 6251403 ×1
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Reddish Brown Part 18674 Element 6102360 ×1
  • Tile Round 1 x 1 Half Circle Reddish Brown Part 24246 Element 6328180 1 spare in the box ×2
  • Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] Reddish Brown Part 99563 Element 6261744 ×2
  • Tile Special 2 x 3 Pentagonal Reddish Brown Part 22385 Element 6245259 or 6163184 ×2

Trans-Purple 14 pieces

  • Cone 1 x 1 [Top Groove] Trans-Purple Part 59900 Element 6514023 or 6337603 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Purple Part 6141 Element 6514054 or 6240210 1 spare in the box ×12

Light Bluish Gray 12 pieces

  • Large Figure Weapon, Barrel with 2 Pin Holes and 3 Axle Holes Light Bluish Gray Part 98585 Element 6186129 or 6039505 ×1
  • Launcher Trigger, Weapon Rapid Shooter, Ridge Around Axle Hole Light Bluish Gray Part 77258 Element 6361703 ×1
  • Plate Special 1 x 2 5.9mm Centre Side Towball Socket Light Bluish Gray Part 14704 Element 6414561 or 6338165 ×6
  • Plate Special 1 x 2 with Clip Horizontal on End Light Bluish Gray Part 63868 Element 6319336 or 4535738 ×1
  • Plate Special 1 x 2 with Handles on Ends Light Bluish Gray Part 18649 Element 6093058 ×1
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Light Bluish Gray Part 32064a Element 6206249 or 4233493 ×1
  • Technic Brick Special 1 x 2 with Pin Hole and 1 x 2 Plate Light Bluish Gray Part 73109 Element 6326478 ×1

Orange 11 pieces

  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Orange Part 6091 Element 6411362 or 6112356 ×2
  • Plate 1 x 2 Orange Part 3023 Element 4177932 or 4163009 ×2
  • Plate Angled 2 x 2 with Step and Hole in Center Orange Part 79846 Element 6372446 ×4
  • Plate Special, 2 x 2 Studs and Handle, Closed Ends (Mech Chest Plate / Armor) Orange Part 27167 Element 6423975 ×1
  • Tile 2 x 2 with Mechanical Grill Print Orange Part 3068bpr0671 Element 6421705 ×1
  • Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] Orange Part 99563 Element 6149656 ×1

Dark Bluish Gray 10 pieces

  • Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip] Dark Bluish Gray Part 48729b Element 6278155 or 4579234 1 spare in the box ×2
  • Bar 2L with Towball Dark Bluish Gray Part 22484 Element 6364352 or 6360117 ×2
  • Cockpit 4 x 2 x 3 with Pin Hole, and 2 Clips Dark Bluish Gray Part 98876 Element 6384443 ×1
  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Dark Bluish Gray Part 64644 Element 6396412 1 spare in the box ×1
  • Plate Special 1 x 2 with End Towball Dark Bluish Gray Part 22890 Element 6370802 or 6338168 ×2
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×1
  • Weapon Gun / Pistol Two Barrel, 10 Ribs Dark Bluish Gray Part 95199 Element 4623236 ×1

Flat Silver 4 pieces

  • Bar Holder with Clip Flat Silver Part 11090 Element 6339866 ×1
  • Brick Round 2 x 2 Dome Bottom [Open Stud] Flat Silver Part 15395 Element 6102756 ×2
  • Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] Flat Silver Part 99563 Element 6208446 ×1

Minifigures 1 figure

  • Rocket Raccoon, Tan Jacket 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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