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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.

Knight's Castle

Checking

6073 Knight's Castle

386 pieces in 93 part and color combinations, plus 6 minifigures.

The piece count includes the 30 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.

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Piece checklist

Bricks 187 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×6
  • Brick 1 x 2 Black Part 3004 Element 300426 ×3
  • Brick 1 x 3 Black Part 3622 Element 362226 ×1
  • Brick 1 x 1 Light Gray Part 3005 Element 300502 ×54
  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×52
  • Brick 1 x 3 Light Gray Part 3622 Element 362202 ×6
  • Brick 1 x 4 Light Gray Part 3010 Element 301002 ×5
  • Brick 1 x 6 with Bottom Tubes and 2 Lowered Cross Supports Light Gray Part 3009b ×6
  • Brick 1 x 8 with Bottom Tubes and 3 Lowered Cross Supports Light Gray Part 3008b ×8
  • Brick 2 x 2 without Inside Ridges Light Gray Part 3003a ×17
  • Brick 2 x 3 without Cross Supports Light Gray Part 3002a ×3
  • Brick 1 x 1 Red Part 3005 Element 300521 ×13
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×9
  • Brick 1 x 3 Red Part 3622 Element 362221 ×3
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×1

Plates 70 pieces

  • Plate 1 x 1 Black Part 3024 Element 302426 ×3
  • Plate 1 x 2 Black Part 3023 Element 302326 ×4
  • Plate 1 x 3 Black Part 3623 Element 362326 ×2
  • Plate 1 x 6 Black Part 3666 Element 366626 ×1
  • Plate 2 x 3 Black Part 3021 Element 302126 ×3
  • Plate 6 x 10 Black Part 3033 Element 303326 ×1
  • Plate 1 x 8 Green Part 3460 Element 346028 ×1
  • Plate 2 x 10 Green Part 3832 Element 383228 ×2
  • Plate 2 x 16 Green Part 4282 Element 6305835 or 4528706 ×2
  • Plate 2 x 4 Green Part 3020 Element 302028 ×1
  • Plate 2 x 6 Green Part 3795 Element 379528 ×1
  • Plate 6 x 6 Green Part 3958 Element 6097194 or 4626001 ×1
  • Plate 1 x 1 Light Gray Part 3024 Element 302402 ×8
  • Plate 1 x 10 Light Gray Part 4477 Element 447702 ×1
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×4
  • Plate 1 x 3 Light Gray Part 3623 Element 362302 ×5
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×2
  • Plate 1 x 6 Light Gray Part 3666 Element 366602 ×2
  • Plate 1 x 8 Light Gray Part 3460 Element 346002 ×1
  • Plate 2 x 10 Light Gray Part 3832 Element 383202 ×2
  • Plate 2 x 2 Light Gray Part 3022 Element 302202 ×2
  • Plate 2 x 3 Light Gray Part 3021 Element 302102 ×4
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×2
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×1
  • Plate 2 x 8 Light Gray Part 3034 Element 303402 ×3
  • Plate 4 x 10 Light Gray Part 3030 Element 303052 or 303002 ×1
  • Plate 4 x 4 Light Gray Part 3031 Element 4243813 or 303102 ×2
  • Plate 6 x 6 Light Gray Part 3958 Element 395802 ×2
  • Plate 1 x 2 Red Part 3023 Element 302321 ×4
  • Plate 1 x 3 Red Part 3623 Element 362321 ×1
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×1

Bricks Sloped 30 pieces

  • Brick Sloped Inverted 45° 2 x 1 Black Part 3665 Element 366526 ×2
  • Brick Sloped Inverted 45° 2 x 2 Double Convex Black Part 3676 Element 6403373 or 6123840 ×12
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×8
  • Brick Sloped Inverted 45° 2 x 1 Light Gray Part 3665 Element 366502 ×4
  • Brick Sloped Inverted 45° 2 x 2 Double Convex Light Gray Part 3676 Element 4186669 or 367602 ×2
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper Red Part 4287a ×2

Minifig Shields, Weapons, & Tools 17 pieces

  • Weapon Bow and Arrow [Large] Brown Part 4499 Element 449925 ×2
  • Weapon Lance Brown Part 3849 Element 4160964 or 384925 ×1
  • Weapon Pike / Spear Round End Brown Part 4497 ×4
  • Weapon Lance Dark Gray Part 3849 Element 384927 ×1
  • Weapon Sword / Shortsword [Shiny Solid Smooth ABS] Dark Gray Part 3847a ×3
  • Shield Triangular with Black Falcon and Blue Border Print Light Gray Part 3846pr0028 Element 4189073 ×3
  • Shield Triangular with Black Falcon and Yellow Border Print Light Gray Part 3846pr0027 Element 4163324 ×3

Panels 17 pieces

  • Panel 2 x 5 x 6 Wall with Arched Window Light Gray Part 4444 Element 4163327 or 444402 ×15
  • Panel 2 x 5 x 6 Wall with Scattered Stones Dark Gray Print Light Gray Part 4444pr0002 ×1
  • Panel 2 x 5 x 6 Wall with Window Stones Dark Gray Print Light Gray Part 4444pr0001 Element 4163326 ×1

Hinges, Arms and Turntables 12 pieces

  • Hinge Brick 1 x 4 [Lower] Black Part 3831 Element 383126 ×2
  • Hinge Brick 1 x 4 [Upper] Black Part 3830 Element 6344999 or 6011458 ×2
  • Hinge Brick 1 x 4 [Lower] Light Gray Part 3831 Element 383102 ×4
  • Hinge Brick 1 x 4 [Upper] Light Gray Part 3830 Element 383002 ×4

Bricks Curved 9 pieces

  • Brick Arch 1 x 3 Black Part 4490 Element 4512727 or 4240242 ×1
  • Brick Arch 1 x 3 Light Gray Part 4490 Element 449002 ×4
  • Brick Arch 1 x 3 Red Part 4490 Element 6600796 or 6223717 ×2
  • Brick Arch 1 x 8 x 2 Red Part 3308 Element 6019621 or 4249187 ×2

Plates Special 9 pieces

  • Plate Special 1 x 1 with Clip Vertical [Thin Open O Clip] Black Part 4085a ×1
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm] [Old Type] Black Part 4623a ×1
  • Technic Plate 2 x 4 [3 Holes] Black Part 3709 Element 370926 ×2
  • Plate Special 1 x 1 with Clip Vertical [Thin Open O Clip] Light Gray Part 4085a ×2
  • Plate Special 1 x 2 with Ladder Light Gray Part 4175 Element 4100526 or 417502 ×2
  • Technic Plate 2 x 4 [3 Holes] Red Part 3709 Element 370921 ×1

Flags, Banners and Signs 7 pieces

  • Flag 4 x 1 Wavy [First Wave Left] Green Part 4495a ×4
  • Flag 4 x 1 Wavy [First Wave Left] White Part 4495a ×3

Tiles 7 pieces

  • Tile 1 x 1 with Groove Black Part 3070b Element 307026 ×2
  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×5

Technic Bricks 6 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Light Gray Part 3700 Element 370002 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×2

Bricks Special 4 pieces

  • Brick Special 1 x 1 with Headlight Light Gray Part 4070 Element 407002 ×2
  • Brick Special 1 x 1 with Headlight Red Part 4070 Element 407021 ×2

Technic Pins 3 pieces

  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×3

Animal / Creature Accessories 2 pieces

  • Animal / Creature Accessory, Saddle [One Clip] Blue Part 4491a ×1
  • Animal / Creature Accessory, Saddle [One Clip] Yellow Part 4491a ×1

Animals / Creatures 2 pieces

  • Animal, Horse, Movable Head, Black Eyes Circled with White, Brown Bridle Print Black Part 4493c01pr0002 Element 4225611 or 4107518 ×1
  • Animal, Horse, Movable Head, Black Eyes, White Pupils, Brown Bridle Print White Part 4493c01pr0011 Element 4121830 or 73408 ×1

Bars, Ladders and Fences 2 pieces

  • Antenna 1 x 4 with Rounded Top Black Part 3957a ×2

String, Bands and Reels 2 pieces

  • String Cord Thin (0.5mm) 50cm Black Part 56823c50 Element 6530026 or 6489925 ×1
  • String Reel Winch 2 x 4 x 2 (Light Gray Drum) Red Part 73037 Element 4190523 or 4109857 ×1

Minifigures 6 figures

  • Archer (Black Falcon) - Black Legs, Black Hips, Rounded Shield, Chin-Guard Minifigure, checked as a whole figure ×2
  • Knight (Black Falcon) - Black Legs, Black Hips, Rounded Shield, Neck-Protector, 3626a Minifigure, checked as a whole figure ×2
  • Knight (Breastplate on Blue) - Black Legs, Black Plume Minifigure, checked as a whole figure ×1
  • Knight (Breastplate on Black) - Black Legs, Black Helmet, Red Plume 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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