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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 Fossilizer

Checking

6854 Alien Fossilizer

48 pieces in 38 part and color combinations, plus 1 minifigure.

LEGO counts 53 pieces. This inventory comes from a separate parts catalog and lists 54, including the 6 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.

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Piece checklist

White 22 pieces

  • Bracket 8 x 2 x 1 1/3 White Part 4732 Element 473201 ×1
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×1
  • Brick Sloped 33° 3 x 2 with Explorien Logo Print White Part 3298pr0004 Element 4144014 or 82528 ×1
  • Brick Sloped 45° 2 x 1 with Bottom Pin White Part 3040b Element 6552115 or 4121932 ×2
  • Brick Sloped 45° 2 x 2 White Part 3039 Element 6552103 or 303901 ×2
  • Brick Sloped 45° 2 x 2 with Space Display Print White Part 3039pr9997 Element 82527 ×1
  • Brick Special 2 x 2 with 2 Pins and Axle Hole White Part 30000 Element 6356180 or 6035762 ×1
  • Brick Special 2 x 4 with Pins White Part 6249 Element 4100409 ×1
  • Engine, Strakes, 2 x 2 Thin Top Plate White Part 4229 Element 422901 ×1
  • Equipment Space Scanner White Part 30035 Element 3003501 ×1
  • Flexible Hose 8.5L with Tabbed Ends (Ends same color as Tube) White Part 73590c02a Element 4558220 or 4235542 ×1
  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs White Part 4276b Element 4238278 or 4188547 ×1
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] White Part 4275b Element 4241120 or 4188523 ×3
  • Magnet Holder 2 x 3 White Part 2607 Element 260701 ×1
  • Panel 1 x 2 x 1 [Square Corners] White Part 4865a Element 486501 ×1
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×1
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×1
  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×1

Black 19 pieces

  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Black Part 4276b Element 4264363 or 4256402 ×2
  • Magnet Cylindrical Black Part 73092 Element 73092 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 2 x 10 Black Part 3832 Element 383226 ×1
  • Plate 2 x 4 Black Part 3020 Element 302026 ×1
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Black Part 3839b Element 383926 ×1
  • Plate Special 1 x 4 Offset with Bar Holes Black Part 4590 Element 6002559 or 4278029 ×2
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×1
  • Tile Round 2 x 2 with Bottom Cross Black Part 4150 Element 415076 or 415026 ×1
  • Tile Special 1 x 1 with Clip and Straight Tips Black Part 2555 Element 255526 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×1
  • Turntable 2 x 2 Plate, Base Black Part 3680 Element 368076 or 368026 ×1
  • Wheel Hard Plastic Small (22mm D. x 24mm) Black Part 6118 Element 4106928 or 611876 ×4

[No Color/Any Color] 3 pieces

  • Sticker Sheet for Exploriens Set [No Color/Any Color] Part 170911 Element 170911 ×1
  • Sticker Sheet for Sets 1737-1, 6815-1, 6854-1, 6856-1, 6899-1, 6938-1 [No Color/Any Color] Part 170900 ×1
  • Sticker Sheets for Sets 1737-1, 5129-1, 6854-1, 6856-1, 6899-1, 6938-1, 6958-1, 6982-1 [No Color/Any Color] Part 170910 Element 170910 ×1

Light Gray 1 piece

  • Turntable 2 x 2 Plate - Top Light Gray Part 3679 Element 367952 or 367902 ×1

Trans-Dark Blue 1 piece

  • Dish 4 x 4 Inverted [Radar] Trans-Dark Blue Part 3960 Element 4218661 or 3006543 ×1

Trans-Neon Green 1 piece

  • Dish 2 x 2 Inverted [Radar] Trans-Neon Green Part 4740 Element 6245297 or 4112517 ×1

Trans-Red 1 piece

  • Dish 4 x 4 Inverted [Radar] Trans-Red Part 3960 Element 3006541 ×1

Minifigures 1 figure

  • Exploriens Spaceman, with Breathing Apparatus 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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