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.
2,337 pieces in 364 part and color combinations, plus 5 minifigures.
LEGO counts 2,359 pieces. This inventory comes from a separate parts catalog and lists 2,361, including the 24 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.
Plate Round 1 x 1 with Solid StudDark Bluish Gray ×7Flat Silver ×23Dark Bluish Gray is darker than Flat Silver.
Brick Sloped Inverted 45° 2 x 1Reddish Brown ×2Dark Brown ×7Reddish Brown is redder and lighter than Dark Brown.
Plate 2 x 6Reddish Brown ×2Dark Brown ×4Reddish Brown is redder and lighter than Dark Brown.
Plate 1 x 2Tan ×4Dark Tan ×8Tan is lighter than Dark Tan.
Plate 1 x 2Black ×73Dark Blue ×4Black is yellower and darker than Dark Blue.
Tile 2 x 4 with GrooveBlack ×17Dark Blue ×2Black is yellower and darker than Dark Blue.
37 more look-alike pairs
Bar 6L with Stop RingBlack ×12Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Brick 1 x 6Black ×15Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick 2 x 2 CornerBlack ×19Dark Bluish Gray ×20Black is darker than Dark Bluish Gray.
Brick 2 x 6Black ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Black ×37Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick Sloped Inverted 45° 2 x 1Black ×16Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]Black ×4Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Brick Special 1 x 1 with HeadlightBlack ×54Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Brick Special 1 x 1 with Stud on 1 SideBlack ×13Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Brick Special 1 x 4 with 4 Studs on One SideBlack ×3Dark Bluish Gray ×32Black is darker than Dark Bluish Gray.
Cone 1 x 1 [Top Groove]Black ×23Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 1 x 1Black ×45Dark Bluish Gray ×12Black is darker than Dark Bluish Gray.
Plate 1 x 10Black ×18Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 1 x 2Black ×73Dark Bluish Gray ×21Black is darker than Dark Bluish Gray.
Plate 1 x 3Black ×10Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Plate 1 x 4Black ×42Dark Bluish Gray ×14Black is darker than Dark Bluish Gray.
Plate 1 x 6Black ×47Dark Bluish Gray ×7Black is darker than Dark Bluish Gray.
Plate 2 x 3Black ×4Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Plate 2 x 4Black ×4Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 2 x 6Black ×3Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 2 x 8Black ×1Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 4 x 10Black ×8Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 4 x 8Black ×2Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 6 x 10Black ×2Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate 6 x 8Black ×5Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate Round 1 x 1 with Solid StudBlack ×18Dark Bluish Gray ×7Black is darker than Dark Bluish Gray.
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)Black ×2Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate Round 4 x 4 with Pin HoleBlack ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate Round Corner 3 x 3Black ×3Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 with 1 Stud without Groove (Jumper)Black ×58Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 with Handle on End [Closed Ends]Black ×12Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Tile 1 x 1 with GrooveBlack ×37Dark Bluish Gray ×12Black is darker than Dark Bluish Gray.
Tile 1 x 2 with GrooveBlack ×1Dark Bluish Gray ×10Black is darker than Dark Bluish Gray.
Tile 1 x 3Black ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Tile 1 x 6 with GrooveBlack ×11Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Tile 2 x 2 with GrooveBlack ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Tile Special 1 x 1 with Clip with Rounded TipsBlack ×8Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Projectile, Large Figure Weapon, Zamor Sphere / Ball with Marbled Trans-Yellow Pattern [Palantír]Trans-BrownPart 54821pat0005Element 6045972×1
Stickers
1 piece
Sticker Sheet for Set 10237-1[No Color/Any Color]Part 15275Element 6061563 or 6047307×1
Tools
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Minifigures
5 figures
Mordor OrcMinifigure, checked as a whole figure×1
Uruk-Hai - Helmet With Hand-printMinifigure, checked as a whole figure×1
Gandalf The Grey - Dark Bluish Gray CapeMinifigure, checked as a whole figure×1
Grima WormtongueMinifigure, checked as a whole figure×1
SarumanMinifigure, 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.