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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.

Alien Pack

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40715 Alien Pack

176 pieces in 73 part and color combinations, plus 1 minifigure.

The official piece count includes the 5 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

Lime 31 pieces

  • Brick Curved 1 x 2 x 1 No Studs Lime Part 37352 Element 6310290 ×1
  • Brick Curved 2 x 2 x 2/3 Lime Part 15068 Element 6138661 ×2
  • Brick Round 1 x 1 Open Stud Lime Part 3062b Element 4212454 ×2
  • Brick Round 2 x 2 Dome Top, Vented Stud with 3-Eyed Alien Print Lime Part 3262pr1034 Element 6469018 ×2
  • Brick Special 1 x 1 with Stud on 1 Side Lime Part 87087 Element 6073026 or 4566860 ×2
  • Plant, Fern 2 x 3 x 2 Lime Part 2682 Element 6581712 or 6438450 ×2
  • Plate 2 x 2 Lime Part 3022 Element 4613977 or 4537937 ×6
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Lime Part 4032a Element 6314224 or 4213047 ×1
  • Plate Special 1 x 2 Rounded with 2 Open Studs Lime Part 35480 Element 6264062 ×6
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Lime Part 15573 Element 6092592 ×3
  • Tile Round 1 x 1 with Black Pupil, Green Dots Print Lime Part 98138pr0391 Element 6475470 2 spares in the box ×4

Green 17 pieces

  • Bar, Angled with 1 x 1 Round Plate / Stud on End Green Part 65578 Element 6510190 or 6382575 1 spare in the box ×2
  • Bracket 1 x 2 - 1 x 2 Inverted Green Part 99780 Element 6099243 ×5
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Green Part 6091 Element 6374489 or 6100223 ×4
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm] Green Part 88072 Element 6261358 or 6073022 ×4
  • Plate Special 1 x 2 with Three Teeth [Tri-Tooth] Green Part 15208 Element 6399786 ×2

Bright Green 16 pieces

  • Plant, Leaves, Round 2 x 2 x 2/3 with + Axle Hole and 4 Leaf Extensions Bright Green Part 15469 Element 6345196 ×1
  • Plant, with Bar and Off-shoot with Stud Bright Green Part 1566 Element 6388070 ×2
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Bright Green Part 61252 Element 6347296 or 6172373 ×8
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Bright Green Part 18674 Element 6380676 ×5

Yellow 13 pieces

  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Yellow Part 53451 Element 6270110 or 6014033 2 spares in the box ×5
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Yellow Part 60897 Element 6348065 or 4613258 ×2
  • Plate Special 1 x 2 with Clip Horizontal on End Yellow Part 63868 Element 6347284 or 4535740 ×4
  • Tile Special 1 x 1 with Clip with Rounded Edges Yellow Part 15712 Element 6348056 or 6116726 ×2

Dark Tan 12 pieces

  • Brick 1 x 1 Dark Tan Part 3005 Element 6001824 or 4497070 ×1
  • Brick 2 x 2 Corner Dark Tan Part 2357 Element 6310830 or 4497065 ×1
  • Brick Sloped 45° 2 x 1 with Bottom Pin Dark Tan Part 3040b Element 4530678 or 4251973 ×4
  • Brick Sloped 65° 2 x 1 x 2 Dark Tan Part 60481 Element 6354068 ×2
  • Brick Wedged, Sloped 45° 2 x 2 Corner Dark Tan Part 13548 Element 6331865 or 6186256 ×2
  • Plate Special 2 x 3 with Rocks Dark Tan Part 27261 Element 6401026 ×1
  • Wedge Plate 6 x 6 Cut Corner Dark Tan Part 6106 Element 6030845 ×1

Tan 12 pieces

  • Bracket 1 x 2 - 1 x 2 Tan Part 99781 Element 6249809 or 6092684 ×7
  • Brick Special 1 x 2 Palisade [aka Log] Tan Part 30136 Element 4218749 or 4114053 ×1
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Tan Part 60478 Element 6211975 or 4546367 ×2
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Half Hollow Anti-stud] - Updated Version Tan Part 4304 Element 6469454 ×2

Coral 11 pieces

  • Plant, Plate 1 x 1 Round with 3 Leaves Coral Part 32607 Element 6375789 ×11

Black 8 pieces

  • Animal Body Part / Plant, Tail / Trunk / Tentacle / Tongue / Vine / Tree Branch (Long Tip) Black Part 80497 Element 6382249 ×1
  • Equipment Candlestick Black Part 37762 Element 6290456 ×2
  • Equipment Radio [Extended Handle, Expanded Speaker Grille] Black Part 19220 Element 6170545 or 6100054 ×1
  • Train Wheel Small, hole notched for wheels holder pin Black Part 50254 Element 4295370 or 4227006 ×4

Light Bluish Gray 7 pieces

  • Antenna 1 x 4 with Flat Top Light Bluish Gray Part 3957b Element 4211473 ×1
  • Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud] Light Bluish Gray Part 60475b Element 6345426 or 4533772 ×1
  • Handlebars Light Bluish Gray Part 30031 Element 4258308 ×1
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Light Bluish Gray Part 3839b Element 4211464 ×2
  • Plate Special 2 x 2 with Wheels Holder Wide [Reinforced Underside Type 2] Light Bluish Gray Part 39767 Element 6387244 ×2

Blue 6 pieces

  • Bar Holder with Hole and Bar Handle Blue Part 23443 Element 6366181 or 6345640 ×1
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×2
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Blue Part 4081b Element 6281991 or 4632567 ×2
  • Plate Special 1 x 2 with Clip Horizontal on Side Blue Part 11476 Element 6313131 or 6213381 ×1

Bright Light Yellow 5 pieces

  • Brick Curved 2 x 1 No Studs [1/2 Bow] Bright Light Yellow Part 11477 Element 6147726 ×3
  • Plate Special 1 x 2 Rounded with 2 Open Studs Bright Light Yellow Part 35480 Element 6296501 ×2

Yellowish Green 5 pieces

  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Yellowish Green Part 53451 Element 6275487 or 6109556 1 spare in the box ×2
  • Cone 1 x 1 [Top Groove] Yellowish Green Part 59900 Element 6420918 ×1
  • Plate Special 1 x 1 Rounded with Handle Yellowish Green Part 26047 Element 6468504 ×2

Dark Orange 4 pieces

  • Brick 2 x 2 Corner Dark Orange Part 2357 Element 6253417 or 4164442 ×2
  • Plate 1 x 2 Dark Orange Part 3023 Element 4570877 or 4162217 ×2

Bright Light Blue 3 pieces

  • Plant, Leaves, Round 2 x 2 x 2/3 with + Axle Hole and 4 Leaf Extensions Bright Light Blue Part 15469 Element 6420921 ×1
  • Plant, Plate 1 x 1 Round with 3 Leaves Bright Light Blue Part 32607 Element 6420914 ×2

Light Aqua 3 pieces

  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Light Aqua Part 24866 Element 6251854 1 spare in the box ×3

White 3 pieces

  • Plate Special 2 x 2 with Bar Frame Octagonal, Reinforced, Completely Round Studs White Part 75937 Element 6009016 ×3

Dark Bluish Gray 2 pieces

  • Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip] Dark Bluish Gray Part 3484 Element 6439040 ×2

Dark Turquoise 2 pieces

  • Plate 1 x 2 Dark Turquoise Part 3023 Element 6213777 or 4218493 ×2

Magenta 2 pieces

  • Food Ice Cream Scoops Magenta Part 6254 Element 6459341 ×2

Opal Trans-Dark Pink 2 pieces

  • Plant, Fern 2 x 3 x 2 Opal Trans-Dark Pink Part 2682 Element 6581714 or 6442196 ×2

Orange 2 pieces

  • Plate Round 1 x 1 with Solid Stud Orange Part 6141 Element 4157103 1 spare in the box ×2

Reddish Brown 2 pieces

  • Brick Sloped Inverted 45° 2 x 1 Reddish Brown Part 3665 Element 4211222 ×1
  • Wedge Plate 3 x 3 Cut Corner Reddish Brown Part 2450 Element 6078090 or 6075207 ×1

Trans-Red 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×2

Trans-Yellow 2 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Yellow Part 54200 Element 6245272 or 4260942 ×2

Dark Purple 1 piece

  • Plant, Flower Stem with Bar and 6 Stems Dark Purple Part 19119 Element 6420217 ×1

Medium Azure 1 piece

  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Medium Azure Part 87580 Element 6126090 or 6003008 ×1

Opal Trans-Purple 1 piece

  • Rock 1 x 1 Crystal 5 Point Opal Trans-Purple Part 30385 Element 6507866 or 6442192 ×1

Pearl Gold 1 piece

  • Crown / Flower / Egg Shell Half Pearl Gold Part 39262 Element 6257048 ×1

Minifigures 1 figure

  • Classic Space, White with Black Airtanks, Red Glasses 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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