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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.

Harry and the Marauder's Map

Checking

4751 Harry and the Marauder's Map

96 pieces in 48 part and color combinations, plus 3 minifigures.

The piece count includes the 13 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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Bricks 20 pieces

  • Brick 1 x 2 Dark Bluish Gray Part 3004 Element 4211088 ×2
  • Brick 1 x 8 Dark Bluish Gray Part 3008 Element 4211099 ×2
  • Brick 8 x 8 Dark Bluish Gray Part 4201 Element 4210874 ×1
  • Brick 1 x 1 Light Bluish Gray Part 3005 Element 4211389 ×4
  • Brick 1 x 4 Light Bluish Gray Part 3010 Element 4211394 ×2
  • Brick 2 x 2 Corner Light Bluish Gray Part 2357 Element 4211349 ×4
  • Brick 2 x 2 x 3 Reddish Brown Part 30145 Element 6173948 or 4220430 ×2
  • Brick 1 x 3 Tan Part 3622 Element 4162465 or 4113920 ×2
  • Brick 2 x 4 Tan Part 3001 Element 4114319 or 300105 ×1

Bricks Sloped 13 pieces

  • Brick Sloped Inverted 45° 2 x 1 Dark Bluish Gray Part 3665 Element 4211096 ×4
  • Brick Sloped 75° 2 x 1 x 3 with Open Stud Light Bluish Gray Part 4460a ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Reddish Brown Part 3660 Element 4211221 ×2
  • Brick Sloped 33° 3 x 4 Sand Green Part 3297 Element 4220428 ×2
  • Brick Sloped 45° 2 x 1 Triple with Ovoid Bottom Pin Sand Green Part 3048c Element 6134271 or 4597660 ×1
  • Brick Sloped 45° 2 x 2 Tan Part 3039 Element 4114322 ×2

Bricks Round and Cones 11 pieces

  • Brick Round 2 x 2 with Axle Hole Reddish Brown Part 3941 Element 4211166 ×6
  • Brick Round 1 x 1 Open Stud Tan Part 3062b Element 4117070 or 306205 ×4
  • Cone 1 x 1 [No Top Groove] Trans-Neon Green Part 4589 Element 618849 or 458949 ×1

Bricks Special 11 pieces

  • Brick Special 1 x 4 with Groove Black Part 2653 Element 265326 ×2
  • Brick Special 1 x 2 with Grille Light Bluish Gray Part 2877 Element 4211383 ×4
  • Brick Special 1 x 2 Palisade [aka Log] Reddish Brown Part 30136 Element 4211180 ×2
  • Brick Special 1 x 1 with Headlight Tan Part 4070 Element 4280137 or 4118793 ×1
  • Brick Special 1 x 4 Palisade [aka Log] Tan Part 30137 Element 6468819 or 4523148 ×2

Plates 10 pieces

  • Plate 1 x 6 Black Part 3666 Element 366626 ×2
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 ×1
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×1
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×3
  • Plate 2 x 8 Dark Bluish Gray Part 3034 Element 4210997 ×2
  • Plate 4 x 6 Tan Part 3032 Element 4114001 ×1

Tiles 8 pieces

  • Tile 1 x 1 with Groove Black Part 3070b Element 307026 1 spare in the box ×2
  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×2
  • Tile 1 x 4 with Groove Light Bluish Gray Part 2431 Element 4211356 or 2431194 ×1
  • Tile 2 x 2 with Scroll and Potions Print (HP) Sand Green Part 3068bpr0086 Element 4164304 ×1
  • Tile 2 x 2 with Groove Tan Part 3068b Element 4185177 or 4114002 ×1
  • Tile 2 x 2 with Marauder's Map Print Tan Part 3068bpr0179 Element 4594309 or 4240245 ×1

Bricks Curved 6 pieces

  • Brick Arch 1 x 3 Light Bluish Gray Part 4490 Element 4645397 or 4519971 ×2
  • Brick Arch 1 x 5 x 4 [Continuous Bow] Light Bluish Gray Part 2339 Element 4519930 or 4211348 ×2
  • Brick Arch 1 x 6 Reddish Brown Part 3455 Element 4220429 ×2

Technic Bricks 5 pieces

  • Technic Brick 1 x 1 with Pin Hole Black Part 6541 Element 654126 ×3
  • Technic Brick 1 x 2 [2 Pin Holes] Tan Part 32000 Element 4523145 or 4143352 ×2

Plates Special 4 pieces

  • Plate Special 1 x 2 with Door Rail Light Bluish Gray Part 32028 Element 4211568 ×4

Bars, Ladders and Fences 2 pieces

  • Bar 4L (Lightsaber Blade / Wand) Black Part 30374 Element 6116604 or 4140303 Also in Dark Bluish Gray ×1
  • Bar 4L (Lightsaber Blade / Wand) Dark Bluish Gray Part 30374 Element 6378143 or 6353308 Also in Black ×1

Energy Effects 2 pieces

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

Animals / Creatures 1 piece

  • Insect, Spider Orange Part 30238 Element 4163673 ×1

Plants & Trees 1 piece

  • Plant, Round 1 x 1 - 3 Bamboo Leaves Green Part 30176 Element 6270003 or 6248461 ×1

Technic Beams 1 piece

  • Technic Beam 1 x 2 Thin Dark Blue Part 41677 Element 6437884 or 4165428 ×1

Technic Pins 1 piece

  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 1 spare in the box ×1

Minifigures 3 figures

  • Harry Potter, Gryffindor Sweater, Violet Cape Minifigure, checked as a whole figure ×1
  • Hogwarts Statue Minifigure, checked as a whole figure ×1
  • Professor Severus Snape, Glow in the Dark Head, Long Purple Robes with Black Buttons, Cape 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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