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.
1,485 pieces in 543 part and color combinations, plus 3 minifigures.
The official piece count includes the 12 parts inside the set's minifigures, which this inventory lists separately. 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.
Tile Special Round 1 x 1 with Hollow BarLight Bluish Gray ×1Metallic Silver ×2Light Bluish Gray is yellower than Metallic Silver.
Brick Curved 10 x 1 [Symmetric Inside Ridges]Dark Blue ×5Black ×4Dark Blue is bluer and lighter than Black.
Brick Curved 2 x 2 x 2/3Dark Blue ×7Black ×4Dark Blue is bluer and lighter than Black.
Plate 2 x 2Black ×1Dark Blue ×2Black is yellower and darker than Dark Blue.
Plate Round Corner 3 x 3Dark Blue ×1Black ×4Dark Blue is bluer and lighter than Black.
Tile 1 x 1 with GrooveDark Blue ×6Black ×1Dark Blue is bluer and lighter than Black.
27 more look-alike pairs
Tile 1 x 8 with GrooveDark Blue ×3Black ×17Dark Blue is bluer and lighter than Black.
Tile 2 x 2 CornerDark Blue ×2Black ×4Dark Blue is bluer and lighter than Black.
Tile 2 x 2 with GrooveDark Blue ×3Black ×2Dark Blue is bluer and lighter than Black.
Tile 2 x 6Dark Blue ×2Black ×1Dark Blue is bluer and lighter than Black.
Bracket 1 x 1 - 1 x 2Black ×2Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Bracket 1 x 1 - 1 x 2 InvertedDark Bluish Gray ×4Black ×2Dark Bluish Gray is lighter than Black.
Brick 1 x 1Black ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick Curved 10 x 1 [Symmetric Inside Ridges]Dark Bluish Gray ×2Black ×4Dark Bluish Gray is lighter than Black.
Brick Curved 2 x 1 No Studs [1/2 Bow]Dark Bluish Gray ×4Black ×2Dark Bluish Gray is lighter than Black.
Brick Curved 2 x 2 x 2/3Black ×4Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Brick Sloped 30° 1 x 2 x 2/3Black ×2Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no studBlack ×10Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Brick Wedged, Curved 3 x 2 with Stud Notch LeftBlack ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Brick Wedged, Curved 3 x 2 with Stud Notch RightBlack ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Brick Wedged, Sloped 2 x 5 LeftDark Bluish Gray ×2Black ×2Dark Bluish Gray is lighter than Black.
Brick Wedged, Sloped 2 x 5 RightDark Bluish Gray ×2Black ×2Dark Bluish Gray is lighter than Black.
Plate 1 x 2Black ×7Dark Bluish Gray ×10Black is darker than Dark Bluish Gray.
Plate 1 x 4Black ×16Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Plate 2 x 12Dark Bluish Gray ×1Black ×2Dark Bluish Gray is lighter than Black.
Tile 1 x 1 with GrooveDark Bluish Gray ×1Black ×1Dark Bluish Gray is lighter than Black.
Tile 1 x 2 with GrooveDark Bluish Gray ×2Black ×4Dark Bluish Gray is lighter than Black.
Tile 1 x 3Black ×8Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Tile 2 x 2 with GrooveDark Bluish Gray ×1Black ×2Dark Bluish Gray is lighter than Black.
Wedge Plate 3 x 2 LeftDark Bluish Gray ×1Black ×1Dark Bluish Gray is lighter than Black.
Wedge Plate 3 x 2 RightBlack ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Wedge Plate 8 x 3, 22° LeftDark Bluish Gray ×1Black ×1Dark Bluish Gray is lighter than Black.
Wedge Plate 8 x 3, 22° RightDark Bluish Gray ×1Black ×1Dark Bluish Gray is lighter than Black.
Sticker Sheet for Set 21350-1[No Color/Any Color]Part 10108247Element 6483633×1
Technic Beams Special
1 piece
Technic Pin Connector Double with Bar [2 Holes]BlackPart 85940Element 6173124 or 4562148×1
Technic Special
1 piece
Technic Plate 1 x 5 with Smooth Ends, 4 Studs and Centre Axle HoleWhitePart 32124Element 6280386 or 4527839×1
Tools
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Tubes and Hoses
1 piece
Cable, Flexible 21L with 2 Connectors and BarsMedium NougatPart 2630Element 6504266×1
Minifigures
3 figures
Chief Martin BrodyMinifigure, checked as a whole figure×1
QuintMinifigure, checked as a whole figure×1
Matt HooperMinifigure, 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.