Free tool

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 Stronghold

Checking

6059 Knight's Stronghold

205 pieces in 76 part and color combinations, plus 5 minifigures.

LEGO counts 224 pieces. This inventory comes from a separate parts catalog and lists 228, including the 23 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.

Show

Piece checklist

Black 105 pieces

  • Antenna 1 x 4 with Rounded Top Black Part 3957a ×6
  • Brick 1 x 1 Black Part 3005 Element 300526 ×8
  • Brick 1 x 1 x 5 with Blocked Open or Hollow Stud Black Part 2453a Element 245326 ×2
  • Brick 1 x 2 Black Part 3004 Element 300426 ×19
  • Brick 1 x 3 Black Part 3622 Element 362226 ×4
  • Brick 1 x 4 Black Part 3010 Element 301026 ×1
  • Brick 1 x 6 with Bottom Tubes and 2 Lowered Cross Supports Black Part 3009b ×7
  • Brick 2 x 2 Corner Black Part 2357 Element 235776 or 235726 ×6
  • Brick 2 x 3 Black Part 3002 Element 300226 ×3
  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×4
  • Brick Sloped 45° 2 x 3 Black Part 3038 Element 303826 ×2
  • Brick Sloped 75° 2 x 1 x 3 with Open Stud Black Part 4460a ×2
  • Brick Sloped Inverted 45° 2 x 1 Black Part 3665 Element 366526 ×3
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×1
  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×4
  • Brick Special 1 x 1 x 2 with Shutter Holder Black Part 3581 Element 4541684 or 4264751 ×2
  • Construction Vehicle Bucket 2 x 3 Curved Bottom, Hollow, with Hinge 2 Fingers Black Part 4626 Element 462626 ×1
  • Door Frame 2 x 6 x 7 Black Part 4071 Element 4264483 or 407126 ×1
  • Hinge Plate 1 x 2 with 3 Fingers On Side Black Part 2452 Element 245226 ×1
  • Hinge Plate 1 x 6 with 2 and 3 Fingers On Ends Black Part 4504 Element 4256462 or 4160816 ×1
  • Panel 2 x 5 x 6 Wall with Arched Window Black Part 4444 Element 444426 ×4
  • Plate 1 x 1 Black Part 3024 Element 302426 ×4
  • Plate 1 x 2 Black Part 3023 Element 302326 ×1
  • Plate 1 x 4 Black Part 3710 Element 371026 ×3
  • Plate 1 x 6 Black Part 3666 Element 366626 ×1
  • Plate 1 x 8 Black Part 3460 Element 346026 ×1
  • Plate 2 x 10 Black Part 3832 Element 383226 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] Black Part 4085c Element 408526 ×2
  • Plate Special 2 x 2 with 2 Pin Holes Black Part 2817 Element 281726 ×3
  • Technic Axle 6 Black Part 3706 Element 370626 ×3
  • Weapon Gun / Torch (Space) [with Grooves] Black Part 3959 Element 4254942 or 395976 ×2

Light Gray 60 pieces

  • Brick 1 x 1 Light Gray Part 3005 Element 300502 ×6
  • Brick 1 x 4 Light Gray Part 3010 Element 301002 ×2
  • Brick Arch 1 x 5 x 4 [Continuous Bow] Light Gray Part 2339 Element 233902 ×4
  • Brick Round 1 x 1 Open Stud Light Gray Part 3062b Element 306202 ×3
  • Brick Sloped 45° 2 x 1 with Bottom Pin Light Gray Part 3040b Element 4121933 or 304002 ×2
  • Brick Sloped Inverted 45° 2 x 1 Light Gray Part 3665 Element 366502 ×6
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Light Gray Part 3660 Element 366002 ×4
  • 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
  • Plate 1 x 1 Light Gray Part 3024 Element 302402 ×4
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×3
  • Plate 2 x 12 Light Gray Part 2445 Element 244502 ×2
  • Plate 2 x 2 Corner Light Gray Part 2420 Element 242052 or 242002 ×2
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×2
  • Plate 4 x 6 Light Gray Part 3032 Element 303202 ×2
  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] Light Gray Part 4085c Element 408502 ×2
  • Shield Triangular with Black Falcon and Blue Border Print Light Gray Part 3846pr0028 Element 4189073 ×1
  • Shield Triangular with Blue Dragon Print Light Gray Part 3846pr0024 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Light Gray Part 3700 Element 370002 ×2
  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×2
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×1

Blue 17 pieces

  • Animal / Creature Accessory, Saddle [One Clip] Blue Part 4491a ×1
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Blue Part 3040b Element 4121936 or 304023 ×4
  • Brick Special 1 x 2 with Pin Blue Part 2458 Element 245823 ×2
  • Flag 4 x 1 Wavy [First Wave Left] Blue Part 4495a ×1
  • Plate 1 x 1 Blue Part 3024 Element 302423 ×2
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] Blue Part 4085c Element 408523 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Blue Part 3700 Element 370023 ×2

Dark Gray 8 pieces

  • Door 1 x 6 x 7 Barred Dark Gray Part 4611 Element 461127 ×1
  • Weapon Crossbow and Bolt Dark Gray Part 2570 Element 257027 ×2
  • Weapon Lance Dark Gray Part 3849 Element 384927 ×3
  • Weapon Sword / Shortsword [Shiny Solid Smooth ABS] Dark Gray Part 3847a ×2

Brown 5 pieces

  • Door, Gate 1 x 5 x 11 Curved Top Brown Part 2400 Element 240025 ×2
  • Weapon Halberd / Axe Brown Part 3848 Element 384825 ×1
  • Weapon Pike / Spear Round End Brown Part 4497 ×2

Green 3 pieces

  • Plate 4 x 12 Green Part 3029 Element 4279059 or 302928 ×3

White 3 pieces

  • Animal, Horse, Movable Head, Black Eyes, White Pupils, Brown Bridle Print White Part 4493c01pr0011 Element 4121830 or 73408 ×1
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×1
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×1

Red 2 pieces

  • Flag 4 x 1 Wavy [First Wave Left] Red Part 4495a ×2

Trans-Yellow 2 pieces

  • Cone 1 x 1 [No Top Groove] Trans-Yellow Part 4589 Element 618844 ×2

Minifigures 5 figures

  • Knight (Breastplate on Blue) - Blue Legs, Chin-Guard Minifigure, checked as a whole figure ×1
  • Knight (Breastplate on Black) - Black Legs, Armor, Blue Plume Minifigure, checked as a whole figure ×1
  • Knight (Scale Mail on Red) - Red Arms, Red Legs, Black Chin-Guard Minifigure, checked as a whole figure ×1
  • Knight (Scale Mail on Red) - Red Arms, Red Legs, Black Neck-Protector Minifigure, checked as a whole figure ×2

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.