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.
LEGO counts 410 pieces. This inventory comes from a separate parts catalog and lists 412; 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.
Brick 1 x 3Black ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick Round Corner 4 x 4 Macaroni Wide with 3 StudsBlack ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick Sloped 75° 2 x 1 x 3 with Open StudBlack ×8Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Launcher, Technic Competition Cannon, Round Bottom with Same Color EndsBlack ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 1 x 2Black ×7Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Plate 1 x 4Black ×4Dark Bluish Gray ×3Black is darker than Dark Bluish Gray.
1 more look-alike pair
Plate 2 x 2 CornerBlack ×4Dark Bluish Gray ×12Black is darker than Dark Bluish Gray.
Large Figure Foot, with 3 Holes, VisorakDark BluePart 50858Element 4252413×4
Minifig Toa Metru NokamaDark BluePart 51638Element 4259775×1
Technic Axle and Pin Connector 2 x 5 with Two Ball Joint SocketsDark BluePart 47296Element 4249003×2
Windscreen Bohrok 4 x 5 x 7 [Plain]Dark BluePart 41671Element 4279452×1
Green
6 pieces
Brick Special 1 x 2 with Cable Holding Square CutoutGreenPart 3134Element 4296273×4
String Cord Medium Thickness 40cmGreenPart 14728c40×2
Dark Green
1 piece
Minifig Toa Metru MatauDark GreenPart 51636Element 4259769×1
Dark Red
1 piece
Minifig Toa Metru VakamaDark RedPart 51637Element 4259773×1
Light Brown
1 piece
Minifig Toa Metru OnewaLight BrownPart 51639Element 4259779×1
Pearl Gold
1 piece
Large Figure Mask Kraahkan, 4 hole chinPearl GoldPart 44815bElement 4493528×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 8758-1[No Color/Any Color]Part 54205Element 4277465×1
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.