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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.

Sub Orbital Guardian

Checking

6878 Sub Orbital Guardian

67 pieces in 36 part and color combinations, plus 1 minifigure.

LEGO counts 69 pieces. This inventory comes from a separate parts catalog and lists 75, including the 8 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

Black 34 pieces

  • Antenna 1 x 4 with Rounded Top Black Part 3957a ×2
  • Box 2 x 2 x 2 Door with Slot with Controls Print Black Part 4346pr0003 ×1
  • Brick 1 x 4 Black Part 3010 Element 301026 ×2
  • Brick Sloped 33° 3 x 1 Black Part 4286 Element 428626 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Black Part 3040b Element 4121966 or 304026 ×4
  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×2
  • Brick Special 2 x 4 x 2 with Studs on Sides Black Part 2434 Element 4494850 or 4201520 ×1
  • Hinge Brick 1 x 2 Base Black Part 3937 Element 393726 ×1
  • Hinge Plate 1 x 2 with 3 Fingers On Side Black Part 2452 Element 245226 ×2
  • Hinge Vehicle Roof 4 x 4 Black Part 4213 Element 421326 ×1
  • Hinge Vehicle Roof Holder 1 x 4 Black Part 4315 Element 4250225 or 431576 ×1
  • Panel 1 x 2 x 2 [Solid Studs] Black Part 4864a Element 4113021 ×1
  • Plate 1 x 4 Black Part 3710 Element 371026 ×1
  • Plate 1 x 6 Black Part 3666 Element 366626 ×2
  • Plate 2 x 6 Black Part 3795 Element 379526 ×4
  • Plate Special 1 x 4 Offset with Bar Holes Black Part 4590 Element 6002559 or 4278029 ×1
  • Plate Special 6 x 6 Octagonal with Square Hole and 4 Clips (Boat Mast Platform) Black Part 2539 ×1
  • Support 2 x 4 x 5 Stanchion Inclined [5mm wide posts] Black Part 4476b Element 6110030 or 4142131 ×1
  • Wedge Plate 8 x 4 Wing Left Black Part 3933 Element 4189089 or 393326 ×1
  • Wedge Plate 8 x 4 Wing Right with Stud Notch Black Part 3934 Element 4189090 or 393426 ×1

White 17 pieces

  • Box 2 x 2 x 2 [Hollow Studs] White Part 4345b Element 434501 ×1
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×2
  • Hinge Brick 1 x 2 Top Plate Thin White Part 3938 Element 393801 ×1
  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs White Part 4276b Element 4238278 or 4188547 ×2
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 ×2
  • Tile 1 x 2 with Red and Yellow Control Panel Print (Original) White Part 3069bpr0048 Element 4264367 or 81515 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove White Part 2412b Element 6601902 or 241201 ×1
  • Tile Special 1 x 2 with Handle White Part 2432 Element 243201 ×1
  • Turntable 2 x 2 Plate, Base White Part 3680 Element 368001 ×6

Trans-Neon Green 10 pieces

  • Antenna 8H Whip Trans-Neon Green Part 2569 Element 6265159 or 6164380 ×2
  • Dish 2 x 2 Inverted [Radar] Trans-Neon Green Part 4740 Element 6245297 or 4112517 ×2
  • Dish 4 x 4 Inverted [Radar] Trans-Neon Green Part 3960 Element 3006549 ×2
  • Panel 3 x 2 x 6 Trans-Neon Green Part 2466 Element 4109867 or 246649 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Neon Green Part 6141 Element 6240223 or 3005749 ×2

Light Gray 6 pieces

  • Turntable 2 x 2 Plate - Top Light Gray Part 3679 Element 367952 or 367902 ×6

Minifigures 1 figure

  • Blacktron II - Jetpack, 3626b Head 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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