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.
5,600 pieces in 1,127 part and color combinations, plus 22 minifigures.
LEGO counts 5,685 pieces. This inventory comes from a separate parts catalog and lists 5,710, including the 110 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.
Brick 1 x 1White ×7Trans-Clear ×3Trans-Clear is see-through: hold the piece up to a light.
Plate 1 x 2White ×12Trans-Clear ×4Trans-Clear is see-through: hold the piece up to a light.
Tile Special Round 1 x 1 with Hollow BarTrans-Clear ×3White ×4Trans-Clear is see-through: hold the piece up to a light.
Plate Round 1 x 1 with Solid StudDark Bluish Gray ×3Flat Silver ×3Dark Bluish Gray is darker than Flat Silver.
Tile Special 1 x 2 Grille with Bottom GrooveFlat Silver ×4Dark Bluish Gray ×2Flat Silver is lighter than Dark Bluish Gray.
Plate Round 1 x 1 with Solid StudLight Bluish Gray ×8Flat Silver ×3Light Bluish Gray is lighter than Flat Silver.
92 more look-alike pairs
Brick 1 x 1Reddish Brown ×7Dark Brown ×46Reddish Brown is redder and lighter than Dark Brown.
Brick 1 x 2Dark Brown ×24Reddish Brown ×3Dark Brown is greener and darker than Reddish Brown.
Brick Arch 1 x 5 x 4 [Continuous Bow, Raised Underside Cross Supports]Dark Brown ×3Reddish Brown ×3Dark Brown is greener and darker than Reddish Brown.
Brick Round 1 x 1 Open StudReddish Brown ×4Dark Brown ×6Reddish Brown is redder and lighter than Dark Brown.
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Dark Brown ×4Reddish Brown ×6Dark Brown is greener and darker than Reddish Brown.
Brick Sloped Inverted 45° 2 x 1Dark Brown ×4Reddish Brown ×2Dark Brown is greener and darker than Reddish Brown.
Door Frame 1 x 4 x 6 Type 2Dark Brown ×2Reddish Brown ×2Dark Brown is greener and darker than Reddish Brown.
Plate 1 x 1Dark Brown ×35Reddish Brown ×30Dark Brown is greener and darker than Reddish Brown.
Plate 1 x 2Reddish Brown ×9Dark Brown ×38Reddish Brown is redder and lighter than Dark Brown.
Plate 1 x 6Dark Brown ×3Reddish Brown ×5Dark Brown is greener and darker than Reddish Brown.
Plate 1 x 8Reddish Brown ×10Dark Brown ×18Reddish Brown is redder and lighter than Dark Brown.
Plate 2 x 4Reddish Brown ×9Dark Brown ×13Reddish Brown is redder and lighter than Dark Brown.
Tile 1 x 2 with GrooveReddish Brown ×3Dark Brown ×7Reddish Brown is redder and lighter than Dark Brown.
Tile 1 x 6 with GrooveDark Brown ×6Reddish Brown ×12Dark Brown is greener and darker than Reddish Brown.
Window 1 x 2 x 3 Flat FrontDark Brown ×5Reddish Brown ×4Dark Brown is greener and darker than Reddish Brown.
Brick 1 x 2Dark Tan ×7Tan ×8Dark Tan is darker than Tan.
Brick Special 1 x 2 with 2 Studs on 1 SideDark Tan ×3Tan ×4Dark Tan is darker than Tan.
Plate 1 x 1Dark Tan ×22Tan ×1Dark Tan is darker than Tan.
Plate 1 x 2Dark Tan ×26Tan ×18Dark Tan is darker than Tan.
Plate 1 x 3Tan ×4Dark Tan ×1Tan is lighter than Dark Tan.
Tile 2 x 3Tan ×6Dark Tan ×3Tan is lighter than Dark Tan.
Bracket 1 x 1 - 1 x 1Dark Blue ×2Black ×3Dark Blue is bluer and lighter than Black.
Brick 1 x 1Black ×10Dark Blue ×22Black is yellower and darker than Dark Blue.
Brick Round 2 x 2 with Axle HoleBlack ×4Dark Blue ×2Black is yellower and darker than Dark Blue.
Brick Sloped Inverted 45° 2 x 1Black ×2Dark Blue ×1Black is yellower and darker than Dark Blue.
Plate 1 x 1Dark Blue ×16Black ×19Dark Blue is bluer and lighter than Black.
Plate 1 x 2Black ×34Dark Blue ×18Black is yellower and darker than Dark Blue.
Plate 1 x 3Black ×2Dark Blue ×4Black is yellower and darker than Dark Blue.
Plate 1 x 6Black ×37Dark Blue ×16Black is yellower and darker than Dark Blue.
Plate Round 1 x 1 with Solid StudBlack ×5Dark Blue ×2Black is yellower and darker than Dark Blue.
Plate Special 2 x 2 with Groove and Center Stud (Jumper)Black ×6Dark Blue ×1Black is yellower and darker than Dark Blue.
Plate Special 2 x 2 with Only 2 studsDark Blue ×1Black ×4Dark Blue is bluer and lighter than Black.
Tile 1 x 2 with GrooveDark Blue ×1Black ×2Dark Blue is bluer and lighter than Black.
Tile 45° Cut 2 x 2 (Triangle)Dark Blue ×4Black ×16Dark Blue is bluer and lighter than Black.
Arm Skeleton [Bent / 2 Clips]Black ×3Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip]Dark Bluish Gray ×6Black ×18Dark Bluish Gray is lighter than Black.
Bar Holder with ClipDark Bluish Gray ×4Black ×8Dark Bluish Gray is lighter than Black.
Bracket 1 x 2 - 2 x 2Dark Bluish Gray ×2Black ×1Dark Bluish Gray is lighter than Black.
Bracket 1 x 2 - 2 x 2 InvertedBlack ×9Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Bracket 3 x 2 x 1 1/3 with Bottom Stud HolderBlack ×4Dark Bluish Gray ×3Black is darker than Dark Bluish Gray.
Brick 1 x 1Black ×10Dark Bluish Gray ×28Black is darker than Dark Bluish Gray.
Brick Round 2 x 2 with Axle HoleBlack ×4Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Dark Bluish Gray ×27Black ×6Dark Bluish Gray is lighter than Black.
Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no studDark Bluish Gray ×8Black ×1Dark Bluish Gray is lighter than Black.
Brick Sloped 45° 2 x 1 with Bottom PinBlack ×1Dark Bluish Gray ×16Black is darker than Dark Bluish Gray.
Brick Sloped 65° 2 x 1 x 2Dark Bluish Gray ×1Black ×2Dark Bluish Gray is lighter than Black.
Brick Sloped Inverted 45° 2 x 1Black ×2Dark Bluish Gray ×7Black is darker than Dark Bluish Gray.
Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud]Dark Bluish Gray ×7Black ×2Dark Bluish Gray is lighter than Black.
Brick Special 1 x 2 Palisade [aka Log]Dark Bluish Gray ×11Black ×3Dark Bluish Gray is lighter than Black.
Brick Wedged, Curved 2 x 1 with Stud Notch LeftBlack ×4Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Brick Wedged, Curved 2 x 1 with Stud Notch RightDark Bluish Gray ×1Black ×4Dark Bluish Gray is lighter than Black.
Door Frame 1 x 4 x 6 Type 2Black ×4Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Panel 1 x 2 x 1 [Rounded Corners]Black ×1Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 1 x 1Black ×19Dark Bluish Gray ×3Black is darker than Dark Bluish Gray.
Plate 1 x 12Dark Bluish Gray ×2Black ×4Dark Bluish Gray is lighter than Black.
Plate 1 x 2Dark Bluish Gray ×4Black ×34Dark Bluish Gray is lighter than Black.
Plate 1 x 3Black ×2Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate 1 x 4Black ×2Dark Bluish Gray ×7Black is darker than Dark Bluish Gray.
Plate 1 x 6Black ×37Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 1 x 8Dark Bluish Gray ×3Black ×3Dark Bluish Gray is lighter than Black.
Plate 2 x 10Black ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 2 x 14Dark Bluish Gray ×2Black ×1Dark Bluish Gray is lighter than Black.
Plate 2 x 2 CornerDark Bluish Gray ×4Black ×4Dark Bluish Gray is lighter than Black.
Plate 2 x 4Dark Bluish Gray ×2Black ×17Dark Bluish Gray is lighter than Black.
Plate 4 x 4Black ×1Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate 4 x 8Dark Bluish Gray ×7Black ×1Dark Bluish Gray is lighter than Black.
Plate Round 1 x 1 with Open StudBlack ×3Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate Round 1 x 1 with Solid StudBlack ×5Dark Bluish Gray ×3Black is darker than Dark Bluish Gray.
Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip]Black ×1Dark Bluish Gray ×3Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 Side Handle [Free Ends]Dark Bluish Gray ×2Black ×5Dark Bluish Gray is lighter than Black.
Plate Special 1 x 2 [Side Handle Closed Ends]Dark Bluish Gray ×2Black ×2Dark Bluish Gray is lighter than Black.
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)Dark Bluish Gray ×4Black ×20Dark Bluish Gray is lighter than Black.
Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm]Black ×3Dark Bluish Gray ×16Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 with Clip Horizontal on EndDark Bluish Gray ×20Black ×14Dark Bluish Gray is lighter than Black.
Plate Special 1 x 2 with Door RailBlack ×8Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 with Pin Hole on TopDark Bluish Gray ×1Black ×4Dark Bluish Gray is lighter than Black.
Plate Special 1 x 2, Top Clip [Open O]Dark Bluish Gray ×4Black ×4Dark Bluish Gray is lighter than Black.
Plate Special 1 x 4 with 2 Studs with Groove [New Underside]Dark Bluish Gray ×17Black ×6Dark Bluish Gray is lighter than Black.
Plate Special 2 x 2 with Groove and Center Stud (Jumper)Dark Bluish Gray ×4Black ×6Dark Bluish Gray is lighter than Black.
Tile 1 x 1 with GrooveDark Bluish Gray ×12Black ×5Dark Bluish Gray is lighter than Black.
Tile 1 x 2 with GrooveDark Bluish Gray ×8Black ×2Dark Bluish Gray is lighter than Black.
Tile 1 x 3Dark Bluish Gray ×4Black ×18Dark Bluish Gray is lighter than Black.
Tile 1 x 6 with GrooveBlack ×13Dark Bluish Gray ×12Black is darker than Dark Bluish Gray.
Tile 1 x 8 with GrooveDark Bluish Gray ×1Black ×2Dark Bluish Gray is lighter than Black.
Tile 2 x 2 with GrooveBlack ×1Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Tile 2 x 4 with GrooveBlack ×6Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Tile 45° Cut 2 x 2 (Triangle)Dark Bluish Gray ×3Black ×16Dark Bluish Gray is lighter than Black.
Tile Round 1 x 1 QuarterDark Bluish Gray ×1Black ×4Dark Bluish Gray is lighter than Black.
Tile Special 1 x 1 with Clip with Rounded EdgesDark Bluish Gray ×4Black ×58Dark Bluish Gray is lighter than Black.
Tile Special 2 x 2 Corner with Cut Corner - FacetDark Bluish Gray ×10Black ×8Dark Bluish Gray is lighter than Black.
Tile Special Round 1 x 1 with Hollow BarDark Bluish Gray ×1Black ×15Dark Bluish Gray is lighter than Black.
Wedge Plate 4 x 4 Cut CornerDark Bluish Gray ×20Black ×2Dark Bluish Gray is lighter than Black.
Minifig Neckwear Armor Double Shoulder Pad with Scabbard for 2 KatanasPearl GoldPart 65183Element 6347776 or 6320673×2
Minifig Lower Body
3 pieces
Leg SkeletonBlackPart 6266Element 6240496 or 6038453×1
Feet, 2 x 2 x 2/3 with 4 Studs on TopOrangePart 66858Element 6320320×2
Stickers
3 pieces
Sticker Sheet 1 for Set 71741-1[No Color/Any Color]Part 77413Element 6337800×1
Sticker Sheet 2 for Set 71741-1[No Color/Any Color]Part 77415Element 6337806×1
Sticker Sheet 3 for Set 71741-1[No Color/Any Color]Part 77417Element 6337807×1
Baseplates
2 pieces
Baseplate 16 x 32Dark Bluish GrayPart 3857Element 4269651×1
Baseplate 32 x 32Dark Bluish GrayPart 3811Element 6139364 or 4560729×1
Minifig Hipwear
2 pieces
Minifig Hipwear Skirt Short, AngularDark TurquoisePart 65753Element 6359880 or 6286829×2
Pneumatics
2 pieces
Pneumatic Hose Connector with Axle ConnectorDark Bluish GrayPart 99021Element 6265669 or 6020189×2
Technic Beams
2 pieces
Technic Beam 1 x 3 ThickBlackPart 32523Element 4142822 or 3252326×2
Technic Bushes
2 pieces
Technic Bush 1/2 Smooth with Axle Hole Semi-ReducedLight Bluish GrayPart 32123bElement 6271165 or 42115731 spare in the box×2
Transportation - Sea and Air
2 pieces
Helicopter Landing Ski 1 x 6 with Pin HoleDark Bluish GrayPart 15540Element 6068029×2
Energy Effects
1 piece
Wave / Power Blast Rounded Energy with Bar HandleTrans-Light BluePart 27393Element 6581317 or 6353237×1
Gear Parts
1 piece
Poster, Ninjago Fan Art Print[No Color/Any Color]Part 99959Element 6359202×1
Tools
1 piece
Brick and Axle Separator v2.0Dark TurquoisePart 96874Element 6254100×1
Tubes and Hoses
1 piece
Zipline, 22L with 2 Connectors - FlexibleReddish BrownPart 27965Element 63278371 spare in the box×1
Minifigures
22 figures
Jay / Urban JayMinifigure, checked as a whole figure×1
Misako, Dark Orange JacketMinifigure, checked as a whole figure×1
Ronin (Legacy)Minifigure, checked as a whole figure×1
ChristinaMinifigure, checked as a whole figure×1
TitoMinifigure, checked as a whole figure×1
Clutch PowersMinifigure, checked as a whole figure×1
EileenMinifigure, checked as a whole figure×1
MeiMinifigure, checked as a whole figure×1
Master Wu Legacy - goldMinifigure, checked as a whole figure×1
HaiMinifigure, checked as a whole figure×1
The MechanicMinifigure, checked as a whole figure×1
Jay with Plain Trans-Yellow HeadMinifigure, checked as a whole figure×1
Kai with Shoulder Cover (Legacy)Minifigure, checked as a whole figure×1
Cole / Urban ColeMinifigure, checked as a whole figure×1
Zane with Shoulder Cover and Silver Head (Legacy)Minifigure, checked as a whole figure×1
CeceMinifigure, checked as a whole figure×1
Statue with Flat Top HairMinifigure, checked as a whole figure×1
Lloyd / Young Lloyd (Legacy)Minifigure, checked as a whole figure×1
Nya / Urban NyaMinifigure, checked as a whole figure×1
KaitoMinifigure, checked as a whole figure×1
Noodle Shop SignMinifigure, checked as a whole figure×1
ScoopMinifigure, 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.