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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.

Black Castle

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4785 Black Castle

386 pieces in 71 part and color combinations.

LEGO counts 380 pieces. This inventory comes from a separate parts catalog and lists 386; 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.

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.

1 more look-alike pair
  • Duplo Plate 3 x 4 x 2 1/3 Rampart Black ×36 Dark Bluish Gray ×4 Black is darker than Dark Bluish Gray.
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Piece checklist

Black 187 pieces

  • Duplo Armor with Gold Helmet with Black Top, with White Rivets and Phoenix Print Black Part 51727pr0004 Element 4279869 ×3
  • Duplo Armor with Gold Helmet, and Gold Breastplate and Phoenix Print Black Part 51727pr0003 Element 4279739 ×1
  • Duplo Brick 1 x 2 x 2 Black Part 4066 Element 4519300 or 4170963 Also in Dark Bluish Gray ×15
  • Duplo Brick 1 x 2 x 2 with Side Cutouts and Channel in Top Black Part 42234 Element 4249892 ×6
  • Duplo Brick 1 x 2 x 2 with Stones with Arrow Slit Print Black Part 4066pr0068 Element 4279819 ×6
  • Duplo Brick 2 x 10 x 2 Arch with Stonework Print Black Part 51704pr9999 Element 4254417 ×7
  • Duplo Brick 2 x 2 Black Part 3437 Element 4583790 or 343726 Also in Dark Bluish Gray ×14
  • Duplo Brick 2 x 2 Slope 45° Black Part 6474 Element 4168694 ×5
  • Duplo Brick 2 x 2 x 2 Black Part 31110 Element 4261331 or 4143307 Also in Dark Bluish Gray ×28
  • Duplo Brick 2 x 4 Black Part 3011 Element 4513081 or 4290069 Also in Dark Bluish Gray ×28
  • Duplo Brick 4 x 3 x 3 Wry Inverted Black Part 51732 Element 4278721 Also in Dark Bluish Gray ×11
  • Duplo Building Wall 1 x 8 x 8 with Door Opening - Castle Black Part 51695 Element 4278717 ×4
  • Duplo Building Wall 1 x 8 x 8 with Window Opening - Castle Black Part 51697 Element 4278719 ×4
  • Duplo Building Wall, 4 x 6 x 6 Curved Turret (Castle) Black Part 52024 Element 4278722 ×5
  • Duplo Flag Wavy 2 x 5 with Red Phoenix and Yellow Fire Print Black Part 51725pr0008 Element 4279826 ×2
  • Duplo Ladder Stand Black Part 2223 Element 4192604 ×1
  • Duplo Panel 1 x 2 x 1 2/3 Sloped with 3 Embossed Gauges Black Part 6428 Element 4261321 or 4167958 ×2
  • Duplo Plate 2 x 2 with Tow Rope Holder Arms Black Part 42026 Element 4186569 or 4162964 ×1
  • Duplo Plate 2 x 4 Black Part 40666 Element 4192931 Also in Dark Bluish Gray ×4
  • Duplo Plate 3 x 4 x 2 1/3 Rampart Black Part 51698 Element 4278594 Also in Dark Bluish Gray ×36
  • Duplo Plate 8 x 8 with Trap Door Opening Black Part 51705 Element 4252449 ×2
  • Duplo Spiked Flail / Mace Black Part 51731 Element 4249239 ×1
  • Duplo Winch Stand Black Part 4654 Element 4141872 ×1

Dark Bluish Gray 102 pieces

  • Duplo Brick 1 x 2 x 2 Dark Bluish Gray Part 4066 Element 4249768 Also in Black ×8
  • Duplo Brick 2 x 2 Dark Bluish Gray Part 3437 Element 4583792 or 4583551 Also in Black ×14
  • Duplo Brick 2 x 2 x 2 Dark Bluish Gray Part 31110 Element 4210954 Also in Black ×10
  • Duplo Brick 2 x 2 x 2 with Vertical Grooves Dark Bluish Gray Part 41978 Element 6030503 or 4249990 ×6
  • Duplo Brick 2 x 4 Dark Bluish Gray Part 3011 Element 4513086 or 4290096 Also in Black ×23
  • Duplo Brick 2 x 8 Dark Bluish Gray Part 4199 Element 4291878 or 4210843 ×3
  • Duplo Brick 4 x 3 x 3 Wry Inverted Dark Bluish Gray Part 51732 Element 4249085 Also in Black ×8
  • Duplo Figure with Rounded Head with Black Legs, Dark Bluish Gray Chest with Brown Belts, Dark Bluish Gray Arms, Dark Bluish Gray Hands Dark Bluish Gray Part 51741pr0008 Element 4281263 ×1
  • Duplo Plate 2 x 4 Dark Bluish Gray Part 40666 Element 4216423 or 4210822 Also in Black ×6
  • Duplo Plate 2 x 8 Dark Bluish Gray Part 44524 Element 6252061 or 4222136 ×6
  • Duplo Plate 3 x 4 x 2 1/3 Rampart Dark Bluish Gray Part 51698 Element 4249073 Also in Black ×4
  • Duplo Plate 4 x 8 Dark Bluish Gray Part 4672 Element 6288575 or 4247823 ×6
  • Duplo Plate 8 x 16 Dark Bluish Gray Part 6490 Element 4518252 or 4210817 ×1
  • Duplo Plate 8 x 8 Dark Bluish Gray Part 51262 Element 6138736 or 4246959 ×5
  • Duplo Staircase, Curved with Drawer Slots Dark Bluish Gray Part 6511 Element 4261086 ×1

Reddish Brown 43 pieces

  • Duplo Barrel Reddish Brown Part 31180 Element 4281173 ×1
  • Duplo Brick 1 x 2 x 2 with Nailed Crossed Wooden Boards Print Reddish Brown Part 4066pr0005 Element 4261180 ×6
  • Duplo Crossbow (51786) Reddish Brown Part 51786 Element 4249086 ×1
  • Duplo Door 1 x 4 x 4 with Rounded Top and Handle - Castle Reddish Brown Part 51288 Element 4244411 ×2
  • Duplo Fence 1 x 6 x 2 Reddish Brown Part 31021 Element 4614479 or 4588072 ×6
  • Duplo Figure with Rounded Head with Dark Bluish Gray Legs, Brown Chest, Dark Bluish Gray Arms, Dark Bluish Gray Hands (Phoenix Soldier) Reddish Brown Part 51741pr0007 Element 4281264 ×4
  • Duplo Ladder 8 Rung Reddish Brown Part 2224 Element 4249975 ×1
  • Duplo Plate 2 x 4 Reddish Brown Part 40666 Element 4251777 ×18
  • Duplo Plate 4 x 8 Reddish Brown Part 4672 Element 6612538 or 4279273 ×3
  • Duplo Table Round 4 x 4 x 1.5 Reddish Brown Part 31066 Element 4541862 or 4251775 ×1

Pearl Light Gray 17 pieces

  • Duplo Broadaxe Pearl Light Gray Part 51996 Element 4280313 or 4252642 ×1
  • Duplo Door 1 x 4 x 4 with Nine Panes Pearl Light Gray Part 31171 Element 4494952 or 4279649 ×2
  • Duplo Door Sliding Grille 6 x 7 Pearl Light Gray Part 51702 Element 4494953 or 4278720 ×1
  • Duplo Flagpole / Antenna 1 x 9 Pearl Light Gray Part 51708 Element 4585938 or 4281431 ×6
  • Duplo Sword, Thick Pearl Light Gray Part 51714 Element 4280312 or 4252450 ×1
  • Duplo Trap Door Grate 4 x 4 Pearl Light Gray Part 51706 Element 4590453 or 4494843 ×5
  • Duplo Winch Drum Narrow High with Dark Bluish Gray String and Black Thin Hook with Stud Case, Rotating Pearl Light Gray Part 46321c03 ×1

Dark Red 14 pieces

  • Duplo Brick 2 x 2 Dark Red Part 3437 Element 4541375 or 4196417 ×6
  • Duplo Brick 2 x 2 Slope 45° Dark Red Part 6474 Element 4251773 ×3
  • Duplo Plate 1 x 2 with Overhang, with Phoenix on Black Shield Print Dark Red Part 42236pr0008 Element 4278927 ×3
  • Duplo Roof Spire Dark Red Part 52025 Element 4276864 ×1
  • Duplo Treasure Chest 2 x 4 x 3 Dark Red Part 48036 Element 4249895 ×1

Red 11 pieces

  • Duplo Flag Wavy 2 x 5 with Slits Red Part 51725 Element 4249102 ×4
  • Duplo Horse Trough 2 x 4 x 2 Red Part 4882 Element 488221 ×1
  • Duplo Wave (Fire, Water, Flame) 2 x 1 x 5 with Marbled Bright Light Orange Tip Red Part 51703pr0001 ×6

Pearl Gold 8 pieces

  • Duplo Broadaxe Pearl Gold Part 51996 Element 4280295 ×2
  • Duplo Shield, Angled Triangle with Phoenix Print Pearl Gold Part 51711pr0003 Element 4279816 ×3
  • Duplo Sword, Thick Pearl Gold Part 51714 Element 4280294 ×2
  • Duplo Treasure / Gold Pearl Gold Part 48647 Element 4279735 ×1

Dark Green 1 piece

  • Duplo Dragon Large with Tan Underside Dark Green Part 5334c01pr0002 Element 4279737 ×1

Light Bluish Gray 1 piece

  • Duplo Winch Drum, Black Thin Rotating Hook with Stud Case, String Light Bluish Gray Part 4653c03 Element 4219453 ×1

Metallic Silver 1 piece

  • Duplo Armor with Yellow Top Feather and Blue and Yellow Breastplate with Lion and Crown Print Metallic Silver Part 51728pr0002 Element 4253812 ×1

White 1 piece

  • Duplo Figure with Rounded Head with Dark Bluish Gray Legs, Blue Arms and Hands White Part 51741pr0014 ×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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