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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.

Aragog in the Dark Forest

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4727 Aragog in the Dark Forest

175 pieces in 78 part and color combinations, plus 2 minifigures.

LEGO counts 178 pieces. This inventory comes from a separate parts catalog and lists 183, including the 8 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

Black 65 pieces

  • Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End Section Black Part 40379 Element 6055070 or 4508453 ×8
  • Animal Body Part / Plant, Tail / Neck / Branch / Trunk, Middle Section with Pin, Round Pin Hole Black Part 40378 Element 6487364 or 6055071 ×8
  • Brick 1 x 1 Black Part 3005 Element 300526 ×1
  • Brick 1 x 2 Black Part 3004 Element 300426 ×2
  • Brick 1 x 4 Black Part 3010 Element 301026 ×1
  • Brick Arch 1 x 5 x 4 [Continuous Bow] Black Part 2339 Element 4519925 or 4159140 ×3
  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×2
  • Brick Wedged, Angled 3 x 2 Left Black Part 6565 Element 4527766 or 656526 ×1
  • Brick Wedged, Angled 3 x 2 Right Black Part 6564 Element 4526931 or 656426 ×1
  • Brick Wedged, Curved 6 x 2 Left, Inner Ridges Black Part 41748 Element 4160130 ×1
  • Brick Wedged, Curved 6 x 2 Right, Inner Ridges Black Part 41747 Element 4160108 ×1
  • Hinge 1 x 3 Locking with 2 Fingers and Claw End, 9 Teeth Black Part 41529 Element 4278911 or 4270824 ×1
  • Hinge Brick 1 x 2 Locking with 2 Fingers Horizontal End, 9 Teeth Black Part 30540 Element 4144533 ×2
  • Hinge Brick 2 x 2 Locking with 1 Finger Vertical and Axle Hole [+ Opening] Black Part 30389b Element 6413328 ×1
  • Hinge Cylinder 1 x 3 Locking with 1 Finger and Technic Friction Pin with Round Hole Black Part 41532 Element 4159335 ×2
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Black Part 73983 Element 6102782 or 74011 ×1
  • Insect, Spider Black Part 30238 Element 4113209 ×2
  • Panel 1 x 2 x 1 [Square Corners] Black Part 4865a Element 486526 ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 ×6
  • Plate 1 x 3 Black Part 3623 Element 362326 ×5
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate 2 x 2 Corner Black Part 2420 Element 242026 ×2
  • Plate 2 x 4 Black Part 3020 Element 302026 ×3
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 6mm] Black Part 4623 Element 4597267 or 462326 ×1
  • String with End Studs 41L Overall Black Part 14226c41 Element 6096957 or 6074034 ×1
  • Technic Ball Joint Black Part 32474 Element 4290713 or 4143539 ×2
  • Technic Pin Connector Round [No Slot] Black Part 75535 Element 75619 ×2
  • Wedge Plate 4 x 2 Left Black Part 41770 Element 4161332 ×1
  • Wedge Plate 4 x 2 Right Black Part 41769 Element 4160869 ×1

Brown 51 pieces

  • Bar 4L (Lightsaber Blade / Wand) Brown Part 30374 Element 4157700 ×1
  • Brick 1 x 2 Brown Part 3004 Element 300425 ×8
  • Brick 2 x 2 Corner Brown Part 2357 Element 4124051 or 4112543 ×4
  • Brick 2 x 4 Brown Part 3001 Element 4124052 or 4112546 ×1
  • Brick Sloped 33° 3 x 1 Brown Part 4286 Element 4118916 or 428625 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Brown Part 3040b Element 4121971 or 4113255 ×9
  • Brick Sloped 45° 2 x 2 Brown Part 3039 Element 4124058 ×2
  • Brick Sloped 75° 2 x 1 x 3 with Open Stud Brown Part 4460a Element 4179282 ×4
  • Brick Sloped 75° 2 x 2 x 3 [Hollow Studs] Brown Part 3684 Element 4248064 or 4143984 ×2
  • Panel 1 x 2 x 3 [Hollow Studs] Brown Part 2362b Element 4158072 ×2
  • Plate 1 x 4 Brown Part 3710 Element 4114378 or 371025 ×2
  • Technic Brick 1 x 1 with Pin Hole Brown Part 6541 Element 4179422 or 654125 ×6
  • Tile 1 x 2 with Groove Brown Part 3069b Element 306925 ×4
  • Tile 1 x 4 with Groove Brown Part 2431 Element 4116732 or 243125 ×4

Dark Gray 21 pieces

  • Animal, Bird, Owl Large, Rounded Features Dark Gray Part 40232 Element 4153284 ×1
  • Brick 2 x 3 Dark Gray Part 3002 Element 4114320 or 300227 ×2
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Dark Gray Part 3747a Element 4112039 ×1
  • Brick Sloped Inverted 45° 2 x 2 Double Convex Dark Gray Part 3676 Element 4179421 or 367627 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Dark Gray Part 3660 Element 366027 ×2
  • Brick Wedged, Curved Inverted 6 x 2 Left Dark Gray Part 41765 Element 4161282 ×1
  • Brick Wedged, Curved Inverted 6 x 2 Right Dark Gray Part 41764 Element 4161267 ×1
  • Hinge Brick 1 x 2 Locking with 2 Fingers Vertical End, 9 Teeth Dark Gray Part 30365 Element 4144501 or 4125291 ×2
  • Hose Rigid 3mm D. 8L / 6.4cm Dark Gray Part 75c08 Element 4125354 ×3
  • Insect Accessory, Spider Web Dark Gray Part 30240 Element 4113211 ×3
  • Plate 1 x 1 Dark Gray Part 3024 Element 4143684 or 4113910 1 spare in the box ×1
  • Plate 2 x 8 Dark Gray Part 3034 Element 303427 ×1
  • Plate 4 x 6 Dark Gray Part 3032 Element 4116853 ×1

Green 16 pieces

  • Baseplate 16 x 16 Green Part 3867 Element 4217115 or 609828 ×1
  • Plant, Leaves 4 x 3 Green Part 2423 Element 6268814 or 242328 ×2
  • Plant, Leaves 6 x 5 Green Part 2417 Element 6266968 or 4613823 ×3
  • Plant, Round 1 x 1 - 3 Bamboo Leaves Green Part 30176 Element 6270003 or 6248461 ×6
  • Plate 2 x 2 Green Part 3022 Element 302228 ×2
  • Plate 2 x 3 Green Part 3021 Element 302128 ×1
  • Plate 4 x 4 Green Part 3031 Element 4243821 or 4113158 ×1

Light Gray 13 pieces

  • Bar 4L (Lightsaber Blade / Wand) Light Gray Part 30374 Element 4129988 ×1
  • Hinge Brick 1 x 2 Locking with 1 Finger Vertical End Light Gray Part 30364 Element 4144498 or 4125379 ×2
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×1
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×1
  • Technic Brick 1 x 1 with Pin Hole Light Gray Part 6541 Element 654102 ×2
  • Technic Brick 1 x 2 [2 Pin Holes] Light Gray Part 32000 Element 3200002 ×2
  • Tile 1 x 6 with Groove Light Gray Part 6636 Element 4106326 ×2
  • Tile 2 x 2 with 4 Spiders Print Light Gray Part 3068bpr0083 Element 4178522 ×2

Chrome Gold 4 pieces

  • Money / Coin with "10" Sans-serif Type Chrome Gold Part 57503 ×1
  • Money / Coin with "20" Sans-serif Type Chrome Gold Part 57504 ×1
  • Money / Coin with "30" Sans-serif Type Chrome Gold Part 57505 ×1
  • Money / Coin with "40" Sans-serif Type Chrome Gold Part 57506 ×1

Sand Green 2 pieces

  • Tile 1 x 1 with Spider Print Sand Green Part 3070bpr0042 Element 4178523 1 spare in the box ×2

Trans-Red 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×2

Tan 1 piece

  • Animal, Bird, Owl Large, Rounded Features Tan Part 40232 Element 4158829 ×1

Minifigures 2 figures

  • Harry Potter, Yellow Skin, Dark Blue Jacket with Zipper Minifigure, checked as a whole figure ×1
  • Ron Weasley, Yellow Skin, Plaid Sweater 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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