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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.

The Blaze Bridge

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21154 The Blaze Bridge

330 pieces in 112 part and color combinations, plus 4 minifigures.

The official piece count includes the 42 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

Plates 96 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 Also in Dark Bluish Gray ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×4
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×3
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 Also in Black ×1
  • Plate 2 x 2 Corner Dark Bluish Gray Part 2420 Element 4210635 ×2
  • Plate 2 x 4 Dark Brown Part 3020 Element 6226792 ×5
  • Plate 1 x 1 Dark Red Part 3024 Element 4539114 or 4183901 1 spare in the box ×10
  • Plate 1 x 2 Dark Red Part 3023 Element 4539097 or 4162582 ×1
  • Plate 1 x 6 Dark Red Part 3666 Element 4539062 or 4164108 ×1
  • Plate 2 x 2 Dark Red Part 3022 Element 4585479 or 4163160 ×1
  • Plate 2 x 2 Corner Dark Red Part 2420 Element 4585751 or 4541513 ×4
  • Plate 2 x 4 Dark Red Part 3020 Element 4539071 or 4528320 ×10
  • Plate 2 x 6 Dark Red Part 3795 Element 4618986 or 4164177 ×6
  • Plate 4 x 10 Dark Red Part 3030 Element 6186106 or 6052765 ×3
  • Plate 4 x 4 Dark Red Part 3031 Element 6134368 or 4613268 ×1
  • Plate 6 x 8 Dark Red Part 3036 Element 6028115 ×2
  • Plate 1 x 1 Dark Tan Part 3024 Element 4549436 or 4497084 1 spare in the box ×2
  • Plate 2 x 2 Corner Light Bluish Gray Part 2420 Element 4211353 ×2
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×5
  • Plate 6 x 12 Light Bluish Gray Part 3028 Element 4211400 ×1
  • Plate 2 x 2 Olive Green Part 3022 Element 6079617 ×1
  • Plate 2 x 2 Orange Part 3022 Element 4613982 or 4159007 ×3
  • Plate 2 x 4 Orange Part 3020 Element 4158355 or 4122468 ×6
  • Plate 2 x 6 Orange Part 3795 Element 4121741 ×2
  • Plate 6 x 10 Orange Part 3033 Element 6034497 or 4505159 ×2
  • Plate 1 x 1 Red Part 3024 Element 302421 1 spare in the box ×2
  • Plate 1 x 1 Trans-Brown Part 3024 Element 6513960 or 6252039 1 spare in the box ×2
  • Plate 1 x 1 Trans-Orange Part 3024 Element 6513961 or 6252040 1 spare in the box ×2
  • Plate 1 x 1 Trans-Yellow Part 3024 Element 6513966 or 6252045 1 spare in the box ×5
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×4

Bricks 94 pieces

  • Brick 2 x 2 Dark Brown Part 3003 Element 6092677 or 6014520 ×3
  • Brick 1 x 1 Dark Red Part 3005 Element 4541376 or 4209383 ×7
  • Brick 1 x 2 Dark Red Part 3004 Element 4539102 or 4163454 ×4
  • Brick 1 x 4 Dark Red Part 3010 Element 6097586 or 6052777 ×15
  • Brick 1 x 6 Dark Red Part 3009 Element 4541528 or 4223789 ×6
  • Brick 2 x 2 Dark Red Part 3003 Element 4539104 or 4249850 ×12
  • Brick 2 x 2 Corner Dark Red Part 2357 Element 4541379 or 4248771 ×8
  • Brick 2 x 4 Dark Red Part 3001 Element 6117418 or 6057588 ×9
  • Brick 2 x 6 Dark Red Part 2456 Element 6089268 or 4496339 ×1
  • Brick 2 x 2 Light Bluish Gray Part 3003 Element 4211387 ×5
  • Brick 2 x 4 Light Bluish Gray Part 3001 Element 4211385 ×5
  • Brick 2 x 6 Light Bluish Gray Part 2456 Element 4274668 or 4211795 ×3
  • Brick 1 x 2 Orange Part 3004 Element 4613981 or 4121739 ×2
  • Brick 2 x 2 Orange Part 3003 Element 4153825 or 4119643 ×8
  • Brick 2 x 2 Corner Orange Part 2357 Element 6212079 or 4130347 ×3
  • Brick 1 x 1 Trans-Orange Part 3005 Element 6514209 or 6240550 ×3

Plates Round Curved and Dishes 30 pieces

  • Plate Round 1 x 1 with Open Stud Black Part 85861 Element 6168646 or 6100627 1 spare in the box ×5
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 Also in Dark Bluish Gray ×3
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Bluish Gray Part 4032a Element 4211042 Also in Black ×3
  • Plate Round 1 x 1 with Solid Stud Light Bluish Gray Part 6141 Element 4211525 1 spare in the box ×2
  • Plate Round 1 x 1 with Solid Stud Medium Azure Part 6141 Element 6102986 1 spare in the box ×2
  • Plate Round 1 x 1 with Solid Stud Reddish Brown Part 6141 Element 4216581 1 spare in the box ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Dark Blue Part 6141 Element 6514055 or 6240214 1 spare in the box ×2
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 1 spare in the box ×10
  • Plate Round 1 x 1 with Solid Stud Yellow Part 6141 Element 614124 1 spare in the box ×1

Plates Special 28 pieces

  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Black Part 87580 Element 6663108 or 4565323 Also in Dark Bluish Gray ×1
  • Technic Plate 2 x 6 [5 Holes] Black Part 32001 Element 3200126 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Dark Bluish Gray Part 15573 Element 6092572 ×3
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Bluish Gray Part 87580 Element 6126083 or 4565322 Also in Black ×8
  • Plate Special 1 x 2 with Door Rail Dark Red Part 32028 Element 6186005 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Red Part 87580 Element 4613761 ×9
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Light Bluish Gray Part 87580 Element 6126082 or 4565393 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Olive Green Part 87580 Element 6212080 ×1
  • Plate Special 2 x 2 with Pixelated Trans-Orange Flames Pattern White Part 41685pat0001 Element 6503226 or 6503225 ×2

Technic Bricks 13 pieces

  • Technic Brick 1 x 1 with Pin Hole Black Part 6541 Element 654126 ×3
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×2
  • Technic Brick 1 x 2 [2 Pin Holes] Light Bluish Gray Part 32000 Element 4211541 ×8

Tiles 10 pieces

  • Tile 1 x 1 with Groove Dark Red Part 3070b Element 4550169 or 4187196 1 spare in the box ×2
  • Tile 1 x 4 with Groove Dark Red Part 2431 Element 4539060 or 4164220 ×2
  • Tile 1 x 1 with Groove Orange Part 3070b Element 4558595 or 4277770 1 spare in the box ×4
  • Tile 1 x 2 with Groove Pearl Gold Part 3069b Element 6107197 ×2

Tiles Special 8 pieces

  • Tile Special 2 x 2 Inverted Light Bluish Gray Part 11203 Element 6132886 ×4
  • Tile Special 2 x 2 with Top Pin Light Bluish Gray Part 2460 Element 4211365 ×1
  • Tile Special Round 2 x 2 with Hole Orange Part 15535 Element 6147052 ×1
  • Tile Special Round 1 x 1 with Hollow Bar Trans-Clear Part 20482 Element 6507895 or 6186867 1 spare in the box ×2

Bricks Sloped 7 pieces

  • Brick Sloped 45° 2 x 2 Dark Red Part 3039 Element 4609925 or 4162216 ×1
  • Brick Sloped 30° 1 x 2 x 2/3 Orange Part 85984 Element 6068996 or 4648855 ×1
  • Brick Sloped 45° 2 x 2 Orange Part 3039 Element 4118828 ×5

Technic Axles 6 pieces

  • Technic Axle 8 Black Part 3707 Element 370726 ×1
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×1
  • Technic Axle 9 Light Bluish Gray Part 60485 Element 4535768 ×1
  • Technic Axle 3 Yellow Part 4519 Element 6130007 ×3

Technic Pins 5 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×2
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×2
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Red Part 32054 Element 4140806 or 4125198 ×1

Bricks Round and Cones 3 pieces

  • Brick Round 2 x 2 [Grill] Black Part 92947 Element 6024730 ×1
  • Cone 1 x 1 [Top Groove] Red Part 59900 Element 4529234 ×2

Minifig Shields, Weapons, & Tools 3 pieces

  • Weapon Sword Blocky Dark Bluish Gray Part 18787 Element 6526124 or 6134370 ×1
  • Tool Pickaxe Blocky, Double Medium Azure Part 18789 Element 6093629 ×1
  • Weapon Sword Blocky Medium Azure Part 18787 Element 6093623 ×1

Pneumatics 3 pieces

  • Pneumatic T-Piece (T Bar) [New Style] Black Part 4697b Element 6104209 1 spare in the box ×3

Technic Beams 3 pieces

  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Light Bluish Gray Part 60483 Element 6265089 or 6004888 ×1
  • Technic Beam 1 x 5 Thin with Axle Holes on Ends Light Bluish Gray Part 11478 Element 6328063 or 6029206 ×2

Technic Connectors 3 pieces

  • Technic Axle Connector Double Flexible [Rubber] Black Part 45590 Element 4198367 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] Black Part 59443 Element 6084612 or 4512363 ×1
  • Technic Pin Connector Round [Slotted] Yellow Part 62462 Element 6173122 or 4526983 ×1

Technic Gears 3 pieces

  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×2
  • Technic Gear 20 Tooth Bevel with Pin Hole Light Bluish Gray Part 87407 Element 4558690 ×1

Bars, Ladders and Fences 2 pieces

  • Bar 1 x 12 with 1 x 2 Plate End with Solid Studs and 1 x 1 Round Plate End Trans-Clear Part 42445 Element 6276993 or 4169199 ×1
  • Bar 4L (Lightsaber Blade / Wand) Yellow Part 30374 Element 6116606 or 4193511 ×1

Bricks Special 2 pieces

  • Brick Special 1 x 1 Studs on 4 Sides Black Part 4733 Element 473326 ×1
  • Brick Special 1 x 2 with 2 Studs on 1 Side Orange Part 11211 Element 6223454 ×1

Containers 2 pieces

  • Treasure Chest Bottom with Rear Slots, with Groove Medium Nougat Part 4738b ×1
  • Treasure Chest Lid [Thick Hinge] Medium Nougat Part 4739a Element 6254218 or 6167286 ×1

Minifig Heads 2 pieces

  • Minifig Head [Plain] [Hollow Stud] Trans-Bright Green Part 3626c Element 6192847 or 6078097 ×1
  • Minifig Head [Plain] [Hollow Stud] Trans-Red Part 3626c Element 6173950 ×1

Panels 2 pieces

  • Panel 1 x 2 x 1 with Rounded Corners and 2 Sides Black Part 23969 Element 6248496 or 6174845 ×2

Technic Special 2 pieces

  • Technic Ball Joint Red Part 32474 Element 4290714 or 4178640 ×2

Bricks Curved 1 piece

  • Brick Arch 1 x 6 Raised Arch Black Part 92950 Element 4620763 ×1

Minifig Accessories 1 piece

  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Dark Brown Part 64644 Element 4538950 ×1

Tiles Round and Curved 1 piece

  • Tile Round 2 x 2 with Bottom Stud Holder Black Part 14769 Element 6070695 ×1

Minifigures 4 figures

  • Wither Skeleton, Square Skull, Straight Arms (60115 Torso) Minifigure, checked as a whole figure ×1
  • Alex in Medium Azure Armor Minifigure, checked as a whole figure ×1
  • Blaze, Trans-Brown Cone Stand 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.

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