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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.

Mystery Plane Adventures

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75901 Mystery Plane Adventures

117 pieces in 62 part and color combinations, plus 3 minifigures.

The official piece count includes the 11 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

Lime 32 pieces

  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Lime Part 6091 Element 6411328 or 4212446 ×2
  • Brick Curved 3 x 1 No Studs Lime Part 50950 Element 4537928 ×2
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed Lime Part 4871 Element 6110067 ×2
  • Brick Wedged, Curved Inverted 6 x 4 Lime Part 43713 Element 6115243 ×1
  • Panel 1 x 2 x 1 [Rounded Corners] Lime Part 4865b Element 6146237 or 6121949 ×2
  • Panel 1 x 4 x 1 with Rounded Corners [Thin Wall] Lime Part 15207 Element 6299442 or 6092671 ×2
  • Plate 1 x 6 Lime Part 3666 Element 4534665 or 4529160 ×6
  • Plate 2 x 2 Lime Part 3022 Element 4613977 or 4537937 ×2
  • Plate 2 x 4 Lime Part 3020 Element 4537936 or 4534667 ×3
  • Plate Round 1 x 1 with Solid Stud Lime Part 6141 Element 4183133 1 spare in the box ×2
  • Plate Round Corner 4 x 4 Lime Part 30565 Element 4504705 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Lime Part 15573 Element 6092592 ×1
  • Technic Cylinder 4 x 4 with Pin Holes and Centre Bar, Closed Sides on Bar Lime Part 41531 Element 6013529 ×1
  • Tile 1 x 4 with Groove Lime Part 2431 Element 4164021 ×3
  • Wedge Plate 2 x 4 Lime Part 51739 Element 6464975 or 6025027 ×1

Medium Azure 17 pieces

  • Plate 1 x 2 Medium Azure Part 3023 Element 6603337 or 6097419 ×2
  • Plate 1 x 6 Medium Azure Part 3666 Element 6603312 or 4625036 ×2
  • Plate 2 x 8 Medium Azure Part 3034 Element 6603343 or 6253666 ×4
  • Plate Round Corner 4 x 4 Medium Azure Part 30565 Element 6481835 or 6056271 ×6
  • Plate Special 4 x 6, Studs on 3 Edges Medium Azure Part 6180 Element 6526743 or 6115246 ×2
  • Tail Shuttle Medium Azure Part 6239 Element 6121953 or 4655245 ×1

Light Bluish Gray 14 pieces

  • Bar 1L with Top Stud and Two Side Studs Light Bluish Gray Part 92690 Element 4640844 or 4600518 ×1
  • Chain 16L [21 Links] Light Bluish Gray Part 60169 Element 6292172 or 4512049 ×1
  • Panel 1 x 2 x 3 [Side Supports / Hollow Studs] Light Bluish Gray Part 87544 Element 4585429 ×2
  • Plate 2 x 10 Light Bluish Gray Part 3832 Element 4211462 ×1
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm] Light Bluish Gray Part 88072 Element 6261353 or 4611702 ×2
  • Plate Special 3 x 2 with Rounded End, Hole Light Bluish Gray Part 3176 Element 4211419 ×2
  • Technic Disc 3 x 3 Light Bluish Gray Part 2723 Element 4667578 ×1
  • Technic Pin 1/2 with 2L Bar Extension Light Bluish Gray Part 61184 Element 6347715 or 4520320 ×2
  • Wheel Holder 2 x 2 Thin with Clips, Plane Single Light Bluish Gray Part 2415 Element 6321198 or 4211351 ×2

White 12 pieces

  • Animal, Horse, Moveable Legs with Black Bridle and Silver Buckles Print White Part 10509pr0003 Element 6036454 ×1
  • Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End White Part 47457 Element 4494474 ×1
  • Lever Small Base with Black Lever White Part 298c02 Element 73737 1 spare in the box ×1
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 Also in Trans-Clear ×4
  • Technic Brick 1 x 2 [1 Pin Hole] White Part 3700 Element 6619284 or 370001 ×2
  • Tile 2 x 2 with Paper Clip, Pumpkin Jack O' Lantern Image and 'STOLEN TROPHY' Newspaper Article Print White Part 3068bpr0268 Element 6122523 ×1
  • Wheel Centre Small with Stub Axles (Pulley Wheel) White Part 3464 Element 4296997 ×2

Orange 8 pieces

  • Brick Curved 2 x 1 No Studs [1/2 Bow] Orange Part 11477 Element 6055069 ×4
  • Brick Round 2 x 2 Dome Top, Hollow Stud Orange Part 30367c Element 4532970 or 4125257 ×1
  • Plate 2 x 12 Orange Part 2445 Element 6313826 or 6056707 ×1
  • Plate 2 x 6 Orange Part 3795 Element 4121741 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Orange Part 2412b Element 4125254 or 3933106 ×1

Trans-Clear 6 pieces

  • Brick 1 x 2 without Bottom Tube Trans-Clear Part 3065 Element 6514262 or 6244904 ×3
  • Plate 1 x 2 Trans-Clear Part 3023 Element 6514001 or 6240204 Also in White ×2
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Clear Part 2654 Element 6581772 or 6163901 ×1

Black 5 pieces

  • Plate Special 1 x 4 with 2 Studs, 3 Bottom Tubes Black Part 92593 Element 4599499 ×2
  • Propeller 3 Blade 9 Diameter with Pin Hole, Recessed Center Black Part 15790 Element 6055123 ×1
  • Tyre 14 x 4 Smooth Small Single [New Style] Black Part 59895 Element 4516843 or 4507700 ×2

Tan 4 pieces

  • Plate Round 2 x 2 with Rounded Bottom with Hamburger Bun Print Tan Part 2654pr0002 Element 6122533 ×2
  • Tile Special Round 2 x 2 with Hole Tan Part 15535 Element 6115248 ×2

Yellow 4 pieces

  • Plate Round 1 x 1 with Solid Stud Yellow Part 6141 Element 614124 1 spare in the box ×4

Flat Silver 3 pieces

  • Plate Special 1 x 4 with Angled Tubes Flat Silver Part 61072 Element 4632100 ×3

Red 3 pieces

  • Brick 2 x 3 Red Part 3002 Element 300271 or 300221 ×1
  • Plate Round 1 x 1 with Solid Stud Red Part 6141 Element 614121 1 spare in the box Also in Trans-Red ×2

Reddish Brown 2 pieces

  • Plate Round 1 x 1 with Solid Stud Reddish Brown Part 6141 Element 4216581 1 spare in the box ×2

Dark Bluish Gray 1 piece

  • Animal / Creature Accessory, Saddle [Two Open O Clips] Dark Bluish Gray Part 18306 Element 6081404 ×1

Dark Tan 1 piece

  • Technic Axle 5 with Stop Dark Tan Part 15462 Element 6055631 ×1

Pearl Gold 1 piece

  • Equipment Goblet / Glass Pearl Gold Part 2343 Element 4505990 ×1

Pearl Titanium 1 piece

  • Weapon Sword / Greatsword Pointed with Thick Crossguard Pearl Titanium Part 18031 Element 6093534 ×1

Trans-Green 1 piece

  • Plate Round 1 x 1 with Solid Stud Trans-Green Part 6141 Element 6514057 or 6240221 1 spare in the box ×1

Trans-Red 1 piece

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

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 75901-1 [No Color/Any Color] Part 21425 Element 6116449 ×1

Minifigures 3 figures

  • Shaggy Rogers with Closed Mouth Minifigure, checked as a whole figure ×1
  • Headless Horseman / Elwood Crane Minifigure, checked as a whole figure ×1
  • Scooby-Doo Sitting Down with Goggles 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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