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.

Drone Explorer

Checking

31071 Drone Explorer

109 pieces in 56 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.

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Piece checklist

White 29 pieces

  • Bracket 1 x 2 - 2 x 2 Inverted White Part 99207 Element 6552151 or 6548279 ×2
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×1
  • Brick Arch 1 x 6 x 2 Curved Top White Part 6183 Element 6552159 or 6132772 ×4
  • Brick Curved 2 x 1 No Studs [1/2 Bow] White Part 11477 Element 6552145 or 6548276 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] White Part 3660 Element 366001 ×1
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed White Part 4871 Element 4173943 or 487101 ×1
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×1
  • Plate Round 1 x 1 with Open Stud White Part 85861 Element 6168642 or 4547649 1 spare in the box ×8
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] White Part 60470b Element 6347287 or 4556152 ×1
  • Technic Brick 1 x 2 [2 Pin Holes] White Part 32000 Element 6564911 or 3200001 ×2
  • Technic Brick 1 x 4 [3 Pin Holes] White Part 3701 Element 6601913 or 370101 ×1
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×1
  • Tile Round 1 x 1 Quarter White Part 25269 Element 6548285 or 6172366 1 spare in the box ×2
  • Wedge Plate 4 x 2 Left White Part 41770 Element 6552119 or 4161326 ×1
  • Wedge Plate 4 x 2 Right White Part 41769 Element 6552118 or 4160857 ×1

Dark Bluish Gray 25 pieces

  • Brick Sloped Inverted 45° 4 x 1 Double with 1 x 2 Recessed Dark Bluish Gray Part 32802 Element 6185675 ×1
  • Plate 1 x 1 Dark Bluish Gray Part 3024 Element 4210719 1 spare in the box ×4
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×2
  • Plate 2 x 2 Corner Dark Bluish Gray Part 2420 Element 4210635 ×2
  • Pneumatic Hose Connector with Axle Connector Dark Bluish Gray Part 99021 Element 6265669 or 6020189 ×4
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Dark Bluish Gray Part 60483 Element 6265093 or 6006141 ×1
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Dark Bluish Gray Part 32064a Element 6178919 or 4210935 ×4
  • Technic Gear 8 Tooth [Reinforced] Dark Bluish Gray Part 10928 Element 6631413 or 6012451 ×1
  • Technic Pin Connector Hub with 2 Axles Dark Bluish Gray Part 27940 Element 6167281 ×2
  • Technic Pin Connector Round 1L [Beam] Dark Bluish Gray Part 18654 Element 6100030 1 spare in the box ×2
  • Tile Special 2 x 2 with Top Pin Dark Bluish Gray Part 2460 Element 4211129 ×2

Black 17 pieces

  • Arm Mechanical with Clip [Thick Support] Black Part 98313 Element 6276867 or 6006739 ×4
  • Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip] Black Part 48729b Element 6278152 or 6037347 1 spare in the box ×1
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Black Part 2654 Element 4617551 or 4278359 ×1
  • Plate Special 1 x 1 Rounded with Handle Black Part 26047 Element 6157554 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Black Part 15573 Element 6092585 ×1
  • Plate Special 1 x 2 with Clip Horizontal on Side Black Part 11476 Element 6313116 or 6132731 ×1
  • Propeller 3 Blades 5 Diameter, Pin Hole Black Part 92842 Element 6360206 or 4599984 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×3
  • Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top] Black Part 32530 Element 4144024 ×2
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×1

Light Bluish Gray 17 pieces

  • Bracket 1 x 2 - 1 x 2 Light Bluish Gray Part 99781 Element 4654582 ×2
  • Brick Special 1 x 2 x 2/3 with Studs on Sides Light Bluish Gray Part 4595 Element 6681658 or 4211502 ×1
  • Lever Small Base with Black Lever Light Bluish Gray Part 298c02 Element 4221775 1 spare in the box ×1
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×3
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Bluish Gray Part 4032a Element 4211475 ×4
  • Plate Special 1 x 2 with Handles on Ends Light Bluish Gray Part 18649 Element 6093058 ×2
  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×2

Orange 9 pieces

  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Orange Part 6091 Element 6411362 or 6112356 ×2
  • Brick Curved 10 x 1 [Symmetric Inside Ridges] Orange Part 13731 Element 6601283 or 6121293 ×2
  • Plate 1 x 6 Orange Part 3666 Element 4173332 or 4122466 ×2
  • Plate 2 x 3 Orange Part 3021 Element 4125278 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] Orange Part 59443 Element 6143028 ×2

Trans-Red 5 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Red Part 54200 Element 6245252 or 4244363 1 spare in the box ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Trans-Red Part 2412b Element 6250158 or 4190187 ×4

Blue 2 pieces

  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×2

Trans-Clear 2 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Clear Part 54200 Element 6245250 or 4244362 1 spare in the box ×2

Trans-Brown 1 piece

  • Windscreen 4 x 4 x 4 2/3 with Handle Trans-Brown Part 11289 Element 6514340 or 6280337 ×1

Trans-Green 1 piece

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Green Part 54200 Element 6245270 or 4244573 1 spare in the box ×1

Trans-Light Blue 1 piece

  • Plate Round 1 x 1 with Solid Stud Trans-Light Blue Part 6141 Element 6514058 or 6240225 1 spare in the box ×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.