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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.

Troll on the Loose

Checking

4712 Troll on the Loose

63 pieces in 32 part and color combinations, plus 2 minifigures.

LEGO counts 71 pieces. This inventory comes from a separate parts catalog and lists 72, including the 9 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

Bricks 29 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×2
  • Brick 1 x 12 Black Part 6112 Element 611226 ×1
  • Brick 1 x 2 Black Part 3004 Element 300426 ×10
  • Brick 1 x 1 Brown Part 3005 Element 4160990 or 300525 ×2
  • Brick 1 x 1 Light Gray Part 3005 Element 300502 ×6
  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×4
  • Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric Ridges Light Gray Part 2454a Element 245402 ×2
  • Brick 2 x 2 Corner Light Gray Part 2357 Element 235752 or 235702 ×2

Bricks Curved 5 pieces

  • Brick Arch 1 x 6 Black Part 3455 Element 345526 ×2
  • Brick Arch 1 x 12 x 3 Light Gray Part 6108 Element 4163079 or 610802 ×1
  • Brick Arch 1 x 6 x 2 - Thick Top with Reinforced Underside Light Gray Part 3307 Element 330702 ×2

Hinges, Arms and Turntables 4 pieces

  • Hinge Brick 1 x 2 Top Plate Thin Light Gray Part 3938 Element 393802 ×2
  • Hinge Brick 1 x 2 Base White Part 3937 Element 6619287 or 393701 ×2

Bricks Round and Cones 3 pieces

  • Cone 1 x 1 [No Top Groove] Light Gray Part 4589 Element 458902 ×1
  • Cone 1 x 1 [No Top Groove] Sand Green Part 4589 Element 4158711 ×2

Minifig Accessories 3 pieces

  • Equipment Key Light Gray Part 62808 1 spare in the box ×1
  • Equipment Dish / Plate / Bowl 3 x 3 [Plain] White Part 6256 Element 6170936 or 4107621 ×1
  • Tap 1 x 2 with Dual Handles White Part 6936 ×1

Panels 3 pieces

  • Panel 1 x 2 x 1 [Square Corners] Dark Gray Part 4865a Element 4118746 ×3

Bars, Ladders and Fences 2 pieces

  • Bar 4L (Lightsaber Blade / Wand) Brown Part 30374 Element 4157700 ×1
  • Bar 4L (Lightsaber Blade / Wand) Light Gray Part 30374 Element 4129988 ×1

Bricks Sloped 2 pieces

  • Brick Sloped 45° 2 x 1 with Bottom Pin Sand Green Part 3040b Element 6083976 or 4597014 ×2

Bricks Special 2 pieces

  • Brick Special 1 x 1 Studs on 4 Sides Dark Gray Part 4733 Element 4143015 or 4114383 ×1
  • Brick Special 1 x 1 x 2 with Shutter Holder Light Gray Part 3581 Element 4161034 or 358102 ×1

Energy Effects 2 pieces

  • Wave / Flame Rounded with Base Pegs Trans-Neon Orange Part 6126a ×2

Plates 2 pieces

  • Plate 2 x 3 Brown Part 3021 Element 4114000 or 302125 ×1
  • Plate 6 x 14 Brown Part 3456 Element 4118877 ×1

Plates Special 2 pieces

  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Black Part 3794a ×2

Windows and Doors 2 pieces

  • Window 1 x 2 x 2 2/3 Pane Lattice Diamond with Rounded Top Black Part 30046 Element 6173105 or 3004626 ×1
  • Door 1 x 4 x 6 Round Top with Window and Keyhole, Non Reinforced Edge Brown Part 40241 Element 4153405 ×1

Minifig Heads 1 piece

  • Minifig Head Pumpkin, Jack O' Lantern Print [Blocked Open Stud] Orange Part 3626bpr0068 Element 4162798 ×1

Tiles 1 piece

  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×1

Minifigures 2 figures

  • Harry Potter, Yellow Skin, Gryffindor Sweater with Crest, Cape with Stars Minifigure, checked as a whole figure ×1
  • Troll (Harry Potter) (Big Fig), Fabric Clothes 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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