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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 Nether Portal Ambush

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21255 The Nether Portal Ambush

349 pieces in 118 part and color combinations, plus 1 minifigure.

The official piece count includes the 3 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

White 68 pieces

  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×8
  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×2
  • Brick 2 x 3 White Part 3002 Element 6550133 or 300251 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) White Part 54200 Element 6550179 or 4504369 1 spare in the box ×2
  • Hinge Plate 2 x 2 Locking with 1 Finger on Top White Part 92582 Element 6265740 or 4613762 ×6
  • Launcher, Brick Special 1 x 4 with Inside Clips (Disk Shooter) White Part 63783 Element 6469439 or 6356165 ×1
  • Panel 1 x 4 x 3 [Side Supports / Hollow Studs] White Part 60581 Element 6615548 or 4558208 ×2
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×2
  • Plate 1 x 6 White Part 3666 Element 6552107 or 6548265 ×2
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×1
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×2
  • Plate 4 x 6 White Part 3032 Element 303201 ×1
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 1 spare in the box ×4
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) White Part 15573 Element 6550152 or 6051511 ×10
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×13
  • Tile Special 2 x 2 Inverted White Part 11203 Element 6564913 or 6013866 ×10

Black 54 pieces

  • Bracket 1 x 2 - 2 x 2 Black Part 44728 Element 6117973 or 6048855 ×6
  • Brick 1 x 16 Black Part 2465 Element 246576 or 246526 ×1
  • Brick 1 x 4 Black Part 3010 Element 301026 ×3
  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×8
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 1 spare in the box ×2
  • Brick Sloped 30° 1 x 2 x 2/3 Black Part 85984 Element 4548180 ×1
  • Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side Black Part 22885 Element 6275806 ×1
  • Hinge Plate 1 x 2 Locking with 1 Finger on Side, without Groove Black Part 44567b Element 6266244 ×1
  • Hinge Plate 1 x 2 Locking with 2 Fingers On End, without Groove, 7 Teeth Black Part 54657 Element 6267045 ×1
  • Panel 1 x 2 x 1 [Rounded Corners] Black Part 4865b Element 6146220 ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 ×1
  • Plate 1 x 8 Black Part 3460 Element 346026 ×1
  • Plate 2 x 2 Corner Black Part 2420 Element 242026 ×8
  • Plate 2 x 4 Black Part 3020 Element 302026 ×4
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Black Part 87580 Element 6663108 or 4565323 ×6
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×2
  • Tile 2 x 4 with Groove Black Part 87079 Element 4560182 ×2
  • Tile Round 2 x 2 with Pixelated Fire Print Black Part 14769pr0008 Element 6468479 or 6215151 ×2

Red 42 pieces

  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×3
  • Brick 2 x 4 Red Part 3001 Element 300121 ×6
  • Brick 2 x 6 Red Part 2456 Element 4181138 or 245621 ×3
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 2 x 4 Red Part 3020 Element 302021 ×2
  • Plate 2 x 8 Red Part 3034 Element 303421 ×1
  • Plate 4 x 4 Red Part 3031 Element 4243814 or 303121 ×1
  • Plate 4 x 8 Red Part 3035 Element 303521 ×1
  • Plate 6 x 8 Red Part 3036 Element 303671 or 303621 ×1
  • Plate Round 1 x 1 with Open Stud Red Part 85861 Element 6223427 1 spare in the box ×2
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Red Part 60478 Element 4515365 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Red Part 87580 Element 6126048 or 4581308 ×13
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Half Hollow Anti-stud] - Updated Version Red Part 4304 Element 6469446 ×1
  • Plate Special 2 x 4 with Groove and Two Center Studs (Jumper) Red Part 65509 Element 6393344 ×1
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Red Part 2412b Element 241221 ×2

Light Bluish Gray 33 pieces

  • Bracket 1 x 1 - 1 x 2 Inverted Light Bluish Gray Part 73825 Element 6345639 ×1
  • Hinge Plate 1 x 2 Locking with 2 Fingers On End, without Groove, 7 Teeth Light Bluish Gray Part 54657 Element 6267048 ×9
  • Plate 1 x 1 Light Bluish Gray Part 3024 Element 4211399 1 spare in the box ×2
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×8
  • Plate 1 x 6 Light Bluish Gray Part 3666 Element 4211438 ×2
  • Plate 2 x 6 Light Bluish Gray Part 3795 Element 4211452 or 3795194 ×1
  • Plate 4 x 4 Light Bluish Gray Part 3031 Element 4243797 or 4211403 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Light Bluish Gray Part 87580 Element 6126082 or 4565393 ×8
  • Technic Brick 1 x 2 [1 Pin Hole] Light Bluish Gray Part 3700 Element 4211440 ×1

Dark Red 26 pieces

  • Brick 1 x 2 Dark Red Part 3004 Element 4539102 or 4163454 ×3
  • Brick 1 x 4 Dark Red Part 3010 Element 6097586 or 6052777 ×2
  • Brick 2 x 2 Dark Red Part 3003 Element 4539104 or 4249850 ×11
  • Brick 2 x 4 Dark Red Part 3001 Element 6117418 or 6057588 ×3
  • Minifig Head Special, Cube with Pixelated Face, Red, Orange, Yellow Square Eyes, Black Squares Print Dark Red Part 19729pr0023 Element 6468478 or 6176402 ×2
  • Plant, Flower Stem with Bar and 6 Stems Dark Red Part 19119 Element 6394946 ×1
  • Plate 1 x 1 Dark Red Part 3024 Element 4539114 or 4183901 1 spare in the box ×4

Dark Bluish Gray 24 pieces

  • Brick 1 x 2 Dark Bluish Gray Part 3004 Element 4211088 ×2
  • Brick 1 x 8 Dark Bluish Gray Part 3008 Element 4211099 ×1
  • Brick 2 x 4 Dark Bluish Gray Part 3001 Element 4211085 ×4
  • Brick Special 2 x 2 with Grooves and Axle Hole Dark Bluish Gray Part 90258 Element 6236949 or 4583879 ×7
  • Hinge Plate 1 x 2 Locking with 1 Finger On Top Dark Bluish Gray Part 30383 Element 6265693 or 4210726 ×3
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×1
  • Plate 6 x 8 Dark Bluish Gray Part 3036 Element 4210794 ×2
  • Plate Special 1 x 2 with Pin Hole Underneath Dark Bluish Gray Part 18677 Element 6396058 ×1
  • Technic Axle 5.5 with Stop [Rounded Short End] Dark Bluish Gray Part 59426 Element 4508553 ×1
  • Tile Special 2 x 2 Inverted Dark Bluish Gray Part 11203 Element 6013082 ×2

Nougat 16 pieces

  • Brick Arch 1 x 3 Nougat Part 4490 Element 6469438 ×2
  • Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no stud Nougat Part 28192 Element 6328177 ×1
  • Plate 1 x 1 Nougat Part 3024 Element 6330584 or 4497056 1 spare in the box ×1
  • Plate 1 x 2 Nougat Part 3023 Element 6330401 or 4497055 ×7
  • Plate Special 1 x 2 with Pin Hole on Top Nougat Part 11458 Element 6469437 ×2
  • Tile 1 x 3 Nougat Part 63864 Element 6330405 ×2
  • Tile 2 x 3 with Pixelated Hoglin Face, White Eyes Print Nougat Part 26603pr0124 Element 6468477 ×1

Orange 15 pieces

  • Brick 1 x 1 Orange Part 3005 Element 4173805 or 4119645 Also in Trans-Orange ×1
  • Brick 2 x 2 Orange Part 3003 Element 4153825 or 4119643 ×1
  • Brick Sloped 45° 2 x 2 Orange Part 3039 Element 4118828 ×2
  • Plate 6 x 8 Orange Part 3036 Element 6424454 or 6226369 ×3
  • Tile 1 x 1 with Groove Orange Part 3070b Element 4558595 or 4277770 1 spare in the box ×8

Tan 11 pieces

  • Bracket 1 x 1 - 1 x 2 Inverted Tan Part 73825 Element 6357613 ×2
  • Brick 1 x 2 Tan Part 3004 Element 4109995 or 300405 ×2
  • Brick Special 1 x 2 Palisade [aka Log] Tan Part 30136 Element 4218749 or 4114053 ×1
  • Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side Tan Part 22885 Element 6214334 ×2
  • Plate 4 x 4 Tan Part 3031 Element 4243824 or 4113919 ×1
  • Technic Pin Long without Friction Ridges, with Anti-Roll Notch Tan Part 39888 Element 6321305 ×1
  • Tile 1 x 2 with Groove Tan Part 3069b Element 4114026 ×2

Dark Purple 10 pieces

  • Plate Round 1 x 1 with Solid Stud Dark Purple Part 6141 Element 4566522 1 spare in the box ×10

Dark Brown 8 pieces

  • Plate 1 x 1 Dark Brown Part 3024 Element 6194729 or 6013830 1 spare in the box ×8

Reddish Brown 7 pieces

  • Plate 2 x 2 Reddish Brown Part 3022 Element 4613975 or 4216695 ×4
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Reddish Brown Part 87580 Element 4565394 ×1
  • Tile Special 1 x 1 with Clip with Rounded Edges Reddish Brown Part 15712 Element 6348057 or 6071274 ×2

Trans-Orange 7 pieces

  • Brick 1 x 1 Trans-Orange Part 3005 Element 6514209 or 6240550 Also in Orange ×1
  • Plate 1 x 1 Trans-Orange Part 3024 Element 6513961 or 6252040 1 spare in the box ×5
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Trans-Orange Part 87580 Element 6499254 or 6394956 ×1

Dark Green 6 pieces

  • Plate Round 1 x 1 with Open Stud Dark Green Part 85861 Element 6230571 1 spare in the box ×6

Dark Turquoise 6 pieces

  • Brick 1 x 1 Dark Turquoise Part 3005 Element 6236772 or 6213776 ×4
  • Plate 1 x 1 Dark Turquoise Part 3024 Element 6213778 or 4121555 1 spare in the box ×2

Dark Tan 5 pieces

  • Plate 1 x 1 Dark Tan Part 3024 Element 4549436 or 4497084 1 spare in the box ×4
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Dark Tan Part 2654 Element 6353064 ×1

Medium Nougat 4 pieces

  • Plate 1 x 4 Medium Nougat Part 3710 Element 6167700 ×1
  • Plate 2 x 2 Medium Nougat Part 3022 Element 6056383 or 4645059 ×1
  • Plate 2 x 4 Medium Nougat Part 3020 Element 6093494 or 4645061 ×1
  • Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper) Medium Nougat Part 34103 Element 6292145 ×1

Dark Orange 3 pieces

  • Plate 1 x 3 Dark Orange Part 3623 Element 6186007 or 4617599 ×1
  • Plate 2 x 3 Dark Orange Part 3021 Element 6359717 or 6224275 ×2

Trans-Purple 2 pieces

  • Brick 1 x 2 x 5 without Side Supports Trans-Purple Part 46212 Element 6514089 or 6350502 ×2

Medium Azure 1 piece

  • Tool Pickaxe Blocky, Double Medium Azure Part 18789 Element 6093629 ×1

Medium Lavender 1 piece

  • Weapon Bow and Arrow, Blocky Medium Lavender Part 18792 Element 6167567 ×1

Minifigures 1 figure

  • Orc Warrior 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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