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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.

Cyber Saucer

Checking

6999 Cyber Saucer

111 pieces in 45 part and color combinations, plus 1 minifigure.

LEGO counts 114 pieces. This inventory comes from a separate parts catalog and lists 116, including the 5 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

Plates 22 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×4
  • Plate 2 x 3 Black Part 3021 Element 302126 ×4
  • Plate 4 x 8 Black Part 3035 Element 303526 ×4
  • Plate 2 x 8 Light Gray Part 3034 Element 303402 ×4
  • Plate 1 x 2 Red Part 3023 Element 302321 ×3
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×1
  • Plate 4 x 4 Red Part 3031 Element 4243814 or 303121 ×2

Bricks 12 pieces

  • Brick 1 x 4 Black Part 3010 Element 301026 ×4
  • Brick 1 x 3 Light Gray Part 3622 Element 362202 ×4
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×4

Plates Special 12 pieces

  • Plate Special 1 x 2 Side Handle [Free Ends] Black Part 2540 Element 4140588 or 254026 ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Black Part 3794a ×4
  • Plate Special 1 x 4 Offset with Bar Holes Black Part 4590 Element 6002559 or 4278029 ×4
  • Plate Special 6 x 6 Octagonal with Opening Black Part 30062 Element 4107107 ×1
  • Plate Special 8 x 8 with Grille [No Hole in Center] Black Part 4151a ×1

Hinges, Arms and Turntables 11 pieces

  • Hinge Brick 1 x 2 Base Black Part 3937 Element 393726 ×5
  • Hinge Brick 1 x 2 Top Plate Thin Light Gray Part 3938 Element 393802 ×4
  • Turntable 4 x 4 Square Base Red Part 3403 Element 340321 ×1
  • Turntable 4 x 4 Top Red Part 3404 Element 4221660 or 340421 ×1

Plates Round Curved and Dishes 11 pieces

  • Dish 4 x 4 Inverted [Radar] Black Part 3960 Element 396026 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Neon Green Part 6141 Element 6240223 or 3005749 ×9

Bricks Round and Cones 6 pieces

  • Cone 1 x 1 [No Top Groove] Black Part 4589 Element 4518219 or 458926 ×4
  • Brick Round 4 x 4 with 4 Side Pin Holes and Center Axle Hole Light Gray Part 6222 Element 622202 ×1
  • Cone 1 x 1 [No Top Groove] Trans-Neon Green Part 4589 Element 618849 or 458949 ×1

Panels 6 pieces

  • Panel 3 x 5 Solar / Deltoid with Clip [Hexagonal] Black Part 30034 Element 4107112 ×2
  • Panel 10 x 10 x 2 1/3 Quarter Saucer Top with UFO Print Left Light Gray Part 30117pr0001 Element 4112967 ×1
  • Panel 10 x 10 x 2 1/3 Quarter Saucer Top with UFO Print Right Light Gray Part 30117pr0009 Element 4112966 ×1
  • Panel 10 x 10 x 2 1/3 Quarter Saucer Top Trans-Neon Green Part 30117 Element 4112960 or 4106989 ×2

Plates Wedged 6 pieces

  • Wedge Plate 3 x 6 Cut Corners Light Gray Part 2419 Element 241902 ×2
  • Wing Plate Bi-level 8 x 4 and 2 x 3 1/3 Down Light Gray Part 30119 Element 4106991 ×4

Bars, Ladders and Fences 4 pieces

  • Antenna 8H Whip Trans-Neon Green Part 2569 Element 6265159 or 6164380 ×4

Bricks Special 4 pieces

  • Brick Special 1 x 1 with Headlight Red Part 4070 Element 407021 ×4

Supports, Girders and Cranes 4 pieces

  • Support Round 2 x 2 x 2 Stand with Reach-Through Center Hole Black Part 3940b Element 394026 ×4

Containers 2 pieces

  • Box 2 x 2 x 2 [Hollow Studs] Black Part 4345b Element 6138634 or 4143247 ×1
  • Box 2 x 2 x 2 Door with Slot Trans-Neon Green Part 4346 Element 4107105 ×1

Minifig Accessories 2 pieces

  • Equipment Space Scanner Black Part 30035 Element 4248831 or 4143705 ×1
  • Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Black Part 4349 Element 434926 ×1

Stickers 2 pieces

  • Sticker Sheet for Sets 2154-1, 5129-1, 5384-1, 6856-1, 6900-1, 6915-1, 6958-1, 6975-1, 6982-1, 6999-1 [No Color/Any Color] Part 170909 Element 170909 ×1
  • Sticker Sheet for Sets 5384-1, 6900-1, 6915-1, 6975-1, 6979-1, 6999-1 [No Color/Any Color] Part 71442 Element 4106993 ×1

Tubes and Hoses 2 pieces

  • Flexible Hose 8.5L with Tabbed Ends (Ends same color as Tube) Black Part 73590c02a Element 4540890 or 621130 ×2

Gear Parts 1 piece

  • Play Gear, Mask, Hard Plastic, UFO Alien Invader Black Part upn0342 ×1

Tiles 1 piece

  • Tile 1 x 2 with Yellow and Orange Display Print Black Part 3069bpr0042 Element 4221986 or 4107120 ×1

Tiles Round and Curved 1 piece

  • Tile Round 2 x 2 with Bottom Cross Black Part 4150 Element 415076 or 415026 ×1

Transportation - Land 1 piece

  • Seat / Chair 2 x 2 Red Part 4079 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 6 x 6 Octagonal Canopy with Axle hole Trans-Neon Green Part 2418b Element 4107181 ×1

Minifigures 1 figure

  • UFO Alien, Blue 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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