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.
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 1 x 2 Grille with Bottom GrooveDark Bluish Gray ×7Flat Silver ×7Dark Bluish Gray is darker than Flat Silver.
Brick Sloped 45° 2 x 2Black ×4Dark Blue ×1Black is yellower and darker than Dark Blue.
Plate 4 x 12Black ×2Dark Blue ×1Black is yellower and darker than Dark Blue.
Brick Sloped 45° 2 x 1 with Bottom PinBlack ×4Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Plate 2 x 6Black ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate Round 1 x 1 with Solid StudBlack ×6Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
5 more look-alike pairs
Plate Special 1 x 2 with Pin Hole on TopBlack ×4Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Technic Beam 3 x 5 L-Shape ThickBlack ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Technic Pin Connector Round 1L [Beam]Black ×2Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Tile 1 x 6 with GrooveBlack ×5Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Tile 2 x 4 with GrooveBlack ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Technic Axle 4RedPart 3705Element 6129995 or 4265797×1
Technic Axle 6RedPart 3706Element 6130002 or 4191526×2
Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L AxleRedPart 11214Element 6209519×2
Technic Brick 1 x 1 with Pin HoleRedPart 6541Element 654121×4
Technic BushRedPart 3713Element 6271820 or 42271551 spare in the box×3
Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top]RedPart 32530Element 4207715 or 3253021×2
Technic Pin with Friction Ridges Lengthwise and TowballRedPart 6628Element 6254216×2
Technic Plate 2 x 4 [3 Holes]RedPart 3709Element 370921×1
Tile 2 x 4 with GrooveRedPart 87079Element 4560179×1
Wedge Plate 3 x 2 RightRedPart 43722Element 4372221 or 4180504×1
Blue
48 pieces
Brick 1 x 2BluePart 3004Element 4613959 or 300423×5
Brick 1 x 4BluePart 3010Element 301023×1
Brick Round 2 x 2 Dome Top, Hollow StudBluePart 30367cElement 6167491 or 4265690×1
Plate 1 x 4BluePart 3710Element 371023×1
Plate 2 x 6BluePart 3795Element 379523×1
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)BluePart 4032aElement 403223×2
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]BluePart 2654Element 4278276 or 4208686×1
Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle)BluePart 6553Element 6270716×2
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×13
Technic Beam 1 x 2 ThinBluePart 41677Element 6360123 or 4186834×1
Technic Brick 1 x 1 with Pin HoleBluePart 6541Element 4119014×4
Technic Pin 1/2 without Friction RidgesBluePart 4274Element 41430051 spare in the box×4
Technic Pin Long with Friction Ridges Lengthwise, 2 Center SlotsBluePart 6558Element 4514553×10
Technic Plate 2 x 4 [3 Holes]BluePart 3709Element 370923×1
Wedge Plate 3 x 2 LeftBluePart 43723Element 4498156 or 4280150×1
Dark Turquoise
45 pieces
Brick 1 x 3Dark TurquoisePart 3622Element 6213783×3
Brick Curved 1 x 2 x 1 1/3 with Curved TopDark TurquoisePart 6091Element 6399564 or 6213785×7
Brick Curved 2 x 4 x 1 1/3Dark TurquoisePart 6081Element 6259798 or 4209749×7
Plate 1 x 2Dark TurquoisePart 3023Element 6213777 or 4218493×9
Plate 2 x 14Dark TurquoisePart 91988Element 6270534×12
Plate 2 x 3Dark TurquoisePart 3021Element 6249417 or 4121834×1
Plate 2 x 8Dark TurquoisePart 3034Element 6257063×5
Tile 8 x 16 with Bottom TubesDark TurquoisePart 90498Element 6259795×1
Dark Blue
41 pieces
Brick 1 x 1Dark BluePart 3005Element 6554189 or 4255413×2
Brick Curved 3 x 1 No StudsDark BluePart 50950Element 4540280 or 4275509×2
Brick Round Corner 4 x 4 Macaroni Wide with 3 StudsDark BluePart 48092Element 6609221 or 6270529×3
Brick Sloped 45° 2 x 2Dark BluePart 3039Element 4153653Also in Black×1
Dish 6 x 6 Inverted (Radar) with White Circle, 6 Spokes PrintDark BluePart 44375bpr9996Element 6271865×1
Hinge Plate 2 x 4 with Articulated Joint - FemaleDark BluePart 3640Element 6270717×2
Plate 1 x 1Dark BluePart 3024Element 6554188 or 41841081 spare in the box×2
Plate 2 x 4Dark BluePart 3020Element 6554194 or 4667595×3
Plate 4 x 12Dark BluePart 3029Element 6490170 or 6270715Also in Black×1
Plate 4 x 6Dark BluePart 3032Element 6037887 or 4252314×1
Plate Round Corner 4 x 4Dark BluePart 30565Element 6023154 or 4506996×3
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)Dark BluePart 15573Element 6554197 or 6092588×10
Plate Special 2 x 2 with Only 2 studsDark BluePart 33909Element 6554209 or 6214810×4
Tile Special 1 x 2 Grille with Bottom GrooveDark BluePart 2412bElement 6022579 or 4507076×4
Wedge Plate 2 x 2 RightDark BluePart 24307Element 6554214 or 6224385×1
Wedge Plate 3 x 3 Cut CornerDark BluePart 2450Element 6554202 or 6110050×1
Flat Silver
7 pieces
Tile Special 1 x 2 Grille with Bottom GrooveFlat SilverPart 2412bElement 4619636Also in Dark Bluish Gray×7
Orange
7 pieces
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Plate 1 x 3OrangePart 3623Element 6147047 or 4513281×1
Plate 1 x 6OrangePart 3666Element 4173332 or 4122466×3
Tile Round 1 x 1OrangePart 98138Element 6284582 or 60094591 spare in the box×2
Medium Azure
2 pieces
Plate Round Corner 3 x 3Medium AzurePart 30357Element 6264993×2
Pearl Titanium
2 pieces
Technic Cylinder 4 x 4 with Pin Holes and Centre Bar, Closed Sides on BarPearl TitaniumPart 41531Element 6074417×2
Trans-Dark Blue
2 pieces
Projectile, Spring Shooter Ammunition 8L BarTrans-Dark BluePart 15303Element 6296379 or 6065898×2
Dark Tan
1 piece
Technic Axle 3 with StudDark TanPart 6587Element 6031821 or 6013821×1
Trans-Clear
1 piece
Tile Round 1 x 1Trans-ClearPart 98138Element 6514191 or 62747381 spare in the box×1
Trans-Red
1 piece
Tile Round 1 x 1Trans-RedPart 98138Element 6514189 or 62586071 spare in the box×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.