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.
1,366 pieces in 370 part and color combinations, plus 9 minifigures.
LEGO counts 1,422 pieces. This inventory comes from a separate parts catalog and lists 1,424, including the 58 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.
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.
Bracket 1 x 2 - 2 x 2 InvertedBlack ×2Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Brick 1 x 4Black ×3Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Brick 2 x 2Black ×3Dark Bluish Gray ×9Black is darker than Dark Bluish Gray.
Brick Curved Inverted 2 x 2 with 1 x 2 CutoutsBlack ×6Dark Bluish Gray ×10Black is darker than Dark Bluish Gray.
Brick Curved Inverted 6 x 1Black ×4Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate 1 x 10Black ×4Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
6 more look-alike pairs
Plate 1 x 4Black ×7Dark Bluish Gray ×9Black is darker than Dark Bluish Gray.
Plate 1 x 8Black ×3Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 2 x 2Black ×7Dark Bluish Gray ×7Black is darker than Dark Bluish Gray.
Plate 2 x 6Black ×7Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 6 x 8Black ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Tile 2 x 3Black ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate Round 1 x 1 with Solid StudMagentaPart 6141Element 62489701 spare in the box×1
Opal Trans-Dark Pink
4 pieces
Brick Round 1 x 1 Open StudOpal Trans-Dark PinkPart 3062bElement 6514241 or 6473803×2
Plant, Fern 2 x 3 x 2Opal Trans-Dark PinkPart 2682Element 6581714 or 6442196×2
Trans-Dark Blue
4 pieces
Tile Round 1 x 1Trans-Dark BluePart 98138Element 6514190 or 62736271 spare in the box×4
Dark Azure
2 pieces
Tile 1 x 1 with GrooveDark AzurePart 3070bElement 61516581 spare in the box×1
Tile Special Round 1 x 1 with Hollow BarDark AzurePart 20482Element 62237331 spare in the box×1
Medium Azure
2 pieces
Plate Special 2 x 2 with Groove and Center Stud (Jumper)Medium AzurePart 87580Element 6126090 or 6003008×2
Bright Green
1 piece
Tile 1 x 1 with GrooveBright GreenPart 3070bElement 61723751 spare in the box×1
Lime
1 piece
Plant, Plate 1 x 1 Round with 3 LeavesLimePart 32607Element 6286831×1
Pearl Titanium
1 piece
Equipment Hand ArmorPearl TitaniumPart 15407Element 6168708 or 6104199×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 60434-1[No Color/Any Color]Part 10105875Element 6465726×1
Minifigures
9 figures
Alien, LimeMinifigure, checked as a whole figure×2
Astronaut, White Spacesuit, Bright Green Backpack and Helmet, GoateeMinifigure, checked as a whole figure×1
Astronaut, White and Dark Blue Spacesuit, Dark Azure Backpack and Helmet, EarpieceMinifigure, checked as a whole figure×1
Astronaut, White Spacesuit, Bright Light Orange Armor, Dark Orange Helmet, Beard and Lightning ScarMinifigure, checked as a whole figure×1
Astronaut, White Spacesuit, Bright Light Orange Armor and HelmetMinifigure, checked as a whole figure×1
Astronaut, White Spacesuit, Bright Green Backpack and HelmetMinifigure, checked as a whole figure×1
Astronaut, Pearl Titanium Spacesuit, Pearl Gold Epaulette and HelmetMinifigure, checked as a whole figure×1
Robot, Opal Trans-Purple Battery PackMinifigure, 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.
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.