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.
450 pieces in 197 part and color combinations, plus 1 minifigure.
The official piece count includes the 4 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.
Plate 1 x 8Black ×2Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Panel 1 x 2 x 1 with Rounded Corners and 2 SidesBright Light BluePart 23969Element 6572523×2
Plate 1 x 2Bright Light BluePart 3023Element 6469765 or 6362254×9
Plate 1 x 3Bright Light BluePart 3623Element 6372138×2
Plate 1 x 4Bright Light BluePart 3710Element 6361988 or 6013805×3
Plate 2 x 6Bright Light BluePart 3795Element 6132422 or 6013812×1
Plate Round Corner 4 x 4Bright Light BluePart 30565Element 6383102×1
Plate Round Corner 6 x 6Bright Light BluePart 6003Element 6572518×3
Plate Round Half 4 x 8Bright Light BluePart 22888Element 6387468 or 6204113×1
Plate Special 1 x 2 with Pin Hole UnderneathBright Light BluePart 18677Element 6572520×4
Plate Special 4 x 4 with 3 x 3 Quarter Round CutoutBright Light BluePart 35044Element 6555105×1
Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom PinBright Light BluePart 32064aElement 6572519×2
Tile 1 x 2 with GrooveBright Light BluePart 3069bElement 6099365 or 6097861×1
Tile 1 x 3Bright Light BluePart 63864Element 6372225×4
Dark Bluish Gray
39 pieces
Brick 1 x 2 x 5 with Hollow StudsDark Bluish GrayPart 2454bElement 4211075×1
Brick 2 x 3Dark Bluish GrayPart 3002Element 4211105×2
Brick Special 1 x 1 x 1 2/3 with Studs on 1 SideDark Bluish GrayPart 32952Element 6228923×2
Brick Special 1 x 2 Rounded with Center BarsDark Bluish GrayPart 77808Element 6510213 or 6390673×2
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 SideDark Bluish GrayPart 22885Element 6572522×6
Panel 1 x 6 x 5Dark Bluish GrayPart 59349Element 4505068×2
Plate 1 x 2Dark Bluish GrayPart 3023Element 4211063×6
Plate 1 x 8Dark Bluish GrayPart 3460Element 4210998Also in Black×1
Plate 2 x 2Dark Bluish GrayPart 3022Element 4211094×4
Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Half Hollow Anti-stud] - Updated VersionDark Bluish GrayPart 4304Element 6469463×4
Sports Basketball Net with AxleDark Bluish GrayPart 11641Element 6572558×1
Technic Axle 8 with StopDark Bluish GrayPart 55013Element 4499858×1
Technic Beam 1 x 3 ThinDark Bluish GrayPart 6632Element 6632199 or 6364452×2
Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom PinDark Bluish GrayPart 32064aElement 6178919 or 4210935×4
Tile 1 x 6 with GrooveDark Bluish GrayPart 6636Element 4210651×1
Dark Blue
27 pieces
Bracket 2 x 2 with 1 x 2 Vertical StudsDark BluePart 41682Element 6547107×1
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Dark BluePart 54200Element 4504374 or 4502092×1
Plate 2 x 2Dark BluePart 3022Element 6037890 or 4528982×1
Plate 2 x 8Dark BluePart 3034Element 6027627 or 4530027×1
Plate 4 x 4Dark BluePart 3031Element 6027625×2
Plate Special 1 x 3 Rounded with 3 Open StudsDark BluePart 77850Element 6490777×5
Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Half Hollow Anti-stud] - Updated VersionDark BluePart 4304Element 6554232 or 6470186×1
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)Dark BluePart 18674Element 6253885×2
Tile 1 x 3Dark BluePart 63864Element 6554203 or 6132566×1
Tile 1 x 6 with GrooveDark BluePart 6636Element 4252437×2
Tile 2 x 2 Curved, MacaroniDark BluePart 27925Element 6199898×4
Tile 4 x 4 Curved, MacaroniDark BluePart 27507Element 6475597 or 6455737×4
Tile Round 1 x 1 Half CircleDark BluePart 24246Element 6444941×2
Black
23 pieces
Bar Holder with Hole and Bar HandleBlackPart 23443Element 6321194 or 6143318×2
Brick Curved Inverted 2 x 2 x 2/3BlackPart 32803Element 6211476×2
Door Frame 1 x 6 x 6BlackPart 42205Element 6391342×1
Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends [No Side Slots]BlackPart 53923Element 6265699×1
Plate 1 x 8BlackPart 3460Element 346026Also in Dark Bluish Gray×2
Plate Round 6 x 6 with HoleBlackPart 11213Element 6187587×1
Plate Round Half 3 x 6 with 1 x 2 CutoutBlackPart 18646Element 6138405×4
Plate Special 1 x 2 with 2 End TowballsBlackPart 3170Element 6416838×1
Plate Special 1 x 2 with Clip Vertical on EndBlackPart 78256Element 6350725×2
Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle)BlackPart 6553Element 4107765 or 655326×2
Technic Axle Connector Smooth [with x Hole + Orientation]BlackPart 59443Element 6084612 or 4512363×1
Tile Special 1 x 1 with Clip with Rounded EdgesBlackPart 15712Element 6335388 or 6066102×2
Coral
20 pieces
Plate 1 x 2CoralPart 3023Element 6258094×4
Plate 1 x 6CoralPart 3666Element 6422379×4
Plate 2 x 10CoralPart 3832Element 6572517 or 6300590×1
Plate 2 x 4CoralPart 3020Element 6305455×3
Tile 1 x 4 with GrooveCoralPart 2431Element 6258570×1
Tile 1 x 6 with GrooveCoralPart 6636Element 6425367 or 6258096×3
Tile Round 1 x 1 Half CircleCoralPart 24246Element 6475308 or 6341396×2
Tile Round 3 x 3CoralPart 67095Element 6544449×2
Yellow
14 pieces
Brick Sloped Inverted 45° 2 x 1YellowPart 3665Element 366524×2
Minifig Head, Open Mouth Smile, Peach LipsYellowPart 3626cpr2948Element 6642300 or 6270320×1
Plate 1 x 1YellowPart 3024Element 302424×2
Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip]YellowPart 60897Element 6348065 or 4613258×2
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)YellowPart 15573Element 6092583×3
Technic Axle 3YellowPart 4519Element 6130007×4
Tan
9 pieces
Brick Arch 1 x 3TanPart 4490Element 4618651 or 4519915×2
Brick Round 1 x 1 Open StudTanPart 3062bElement 4117070 or 306205×2
Plate 1 x 6TanPart 3666Element 4124067 or 366605×3
Plate Round 4 x 4 with Pin HoleTanPart 60474Element 6302268×1
Tile 1 x 2 with GrooveTanPart 3069bElement 4114026×1
Blue
8 pieces
Plate 1 x 1BluePart 3024Element 302423×2
Plate 1 x 4BluePart 3710Element 371023×3
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)BluePart 15573Element 6092582×2
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×1
Yellowish Green
8 pieces
Tile Round 1 x 1Yellowish GreenPart 98138Element 6284598×5
Tile Round 2 x 2 with Bottom Stud HolderYellowish GreenPart 14769Element 6424480 or 6113047×3
Green
6 pieces
Plate 2 x 2GreenPart 3022Element 302228×1
Plate 2 x 2 CornerGreenPart 2420Element 4157120 or 242028×4
Plate Special 1 x 2 [Side Handle Closed Ends]GreenPart 48336Element 4521931×1
Lime
2 pieces
Plate Special 1 x 2 Rounded with 2 Open StudsLimePart 35480Element 6264062×1
Tile 1 x 4 with GrooveLimePart 2431Element 4164021×1
Reddish Brown
2 pieces
Plate Round 1 x 1 with Solid StudReddish BrownPart 6141Element 4216581×2
Orange
1 piece
Minifig Head Special, Basketball [Plain]OrangePart 7421Element 6596844 or 6551665×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 43021-1[No Color/Any Color]Part 10114190Element 6552308×1
Minifigures
1 figure
Red Nike Outfit, Hood with CapMinifigure, 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.