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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.

Lunar Command

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3842 Lunar Command

277 pieces in 50 part and color combinations.

LEGO counts 271 pieces. This inventory comes from a separate parts catalog and lists 277; 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.

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

White 109 pieces

  • Antenna 1 x 4 with Rounded Top White Part 3957a ×2
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×6
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×26
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×24
  • Brick Arch 1 x 4 x 2 White Part 6182 Element 6031098 or 618201 ×6
  • Brick Round 2 x 2 with Axle Hole White Part 3941 Element 6601920 or 614351 ×2
  • Dish 3 x 3 Inverted [Radar] White Part 43898 Element 4179580 ×1
  • Panel 1 x 2 x 1 [Square Corners] White Part 4865a Element 486501 ×2
  • Plate Round 1 x 1 with Open Stud White Part 85861 Element 6168642 or 4547649 1 spare in the box ×4
  • Tap 1 x 1 with Hole in Spout White Part 4599a ×6
  • Tile 1 x 1 with Groove White Part 3070b Element 6550138 or 307001 1 spare in the box ×1
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×2
  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove White Part 2412b Element 6601902 or 241201 ×26

Lime 27 pieces

  • Brick Round 2 x 2 x 1 2/3 Dome Top, Blocked Open Stud Lime Part 30151a Element 4559833 ×10
  • Microfig Lunar Command Lime Lime Part 85863pr0006 Element 6023416 or 4557629 ×1
  • Plate 2 x 2 Lime Part 3022 Element 4613977 or 4537937 ×7
  • Tile 1 x 1 with Groove Lime Part 3070b Element 4537251 1 spare in the box ×9

Orange 27 pieces

  • Brick Round 2 x 2 x 1 2/3 Dome Top, Blocked Open Stud Orange Part 30151a Element 4560750 or 4141096 ×10
  • Microfig Lunar Command Orange Orange Part 85863pr0005 Element 4558102 ×1
  • Plate 2 x 2 Orange Part 3022 Element 4613982 or 4159007 ×7
  • Tile 1 x 1 with Groove Orange Part 3070b Element 4558595 or 4277770 1 spare in the box ×9

Yellow 27 pieces

  • Cone 1 x 1 [Top Groove] Yellow Part 59900 Element 4525464 ×20
  • Microfig Lunar Command Yellow Yellow Part 85863pr0007 Element 4560454 ×4
  • Tile 1 x 1 with Groove Yellow Part 3070b Element 307024 1 spare in the box ×1
  • Tile 1 x 2 with Groove Yellow Part 3069b Element 306924 ×2

Light Bluish Gray 20 pieces

  • Dish 2 x 2 Inverted [Radar] Light Bluish Gray Part 4740 Element 4211512 ×5
  • Dish 4 x 4 Inverted [Radar] Light Bluish Gray Part 3960 Element 4211664 ×4
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) Light Bluish Gray Part 3794b ×6
  • Tile 1 x 1 with Groove Light Bluish Gray Part 3070b Element 4211415 1 spare in the box ×1
  • Tile 1 x 2 with Groove Light Bluish Gray Part 3069b Element 4211414 ×2

Trans-Yellow 20 pieces

  • Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki Eye Trans-Yellow Part 58176 Element 4652255 or 4539499 ×20

Trans-Neon Orange 10 pieces

  • Antenna 1 x 4 with Rounded Top Trans-Neon Orange Part 3957a Element 4560958 or 4129565 ×3
  • Dish 2 x 2 Inverted [Radar] Trans-Neon Orange Part 4740 Element 6245295 or 3006347 ×7

Red 8 pieces

  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×7
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Red Part 4032a Element 403221 ×1

Dark Bluish Gray 7 pieces

  • Baseplate 32 x 32 Dark Bluish Gray Part 3811 Element 6139364 or 4560729 ×1
  • Dish 2 x 2 Inverted [Radar] Dark Bluish Gray Part 4740 Element 4211010 Also in Black ×1
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×1
  • Weapon Gun / Torch (Space) [with Grooves] Dark Bluish Gray Part 3959 Element 4262540 or 4242182 ×4

Green 7 pieces

  • Plate 2 x 2 Green Part 3022 Element 302228 ×7

Trans-Neon Green 6 pieces

  • Antenna 1 x 4 with Rounded Top Trans-Neon Green Part 3957a ×3
  • Dish 2 x 2 Inverted [Radar] Trans-Neon Green Part 4740 Element 6245297 or 4112517 ×3

Black 5 pieces

  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×1
  • Cone 2 x 2 x 2, Open Stud Black Part 3942c Element 6092664 or 6022160 ×1
  • Die - 6 Sided Rubber Frame with Red Centre Studs (Board Games) Black Part 64776pat0001 Element 4539364 ×1
  • Dish 2 x 2 Inverted [Radar] Black Part 4740 Element 474026 Also in Dark Bluish Gray ×1
  • Tool Screwdriver and Spanner / Wrench Black Part 4006 Element 6034000 or 4569095 ×1

Trans-Red 4 pieces

  • Dish 2 x 2 Inverted [Radar] Trans-Red Part 4740 Element 6580377 or 6245303 ×4

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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