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.
822 pieces in 173 part and color combinations, plus 8 minifigures.
LEGO counts 895 pieces. This inventory comes from a separate parts catalog and lists 893, including the 71 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 Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Black ×4Dark Bluish Gray ×20Black is darker than Dark Bluish Gray.
Brick Wedged, Curved Triple 4 x 4 x 2/3, 2 StudsWhitePart 45677Element 4193068 or 456771×2
Dish 2 x 2 Inverted [Radar]WhitePart 4740Element 6601845 or 474001×2
Dish 3 x 3 Inverted [Radar]WhitePart 43898Element 4179580×5
Dish 4 x 4 Inverted [Radar]WhitePart 3960Element 396001×1
Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 TeethWhitePart 44302aElement 4183048×2
Panel 1 x 2 x 1 [Square Corners]WhitePart 4865aElement 486501×9
Plate 1 x 2WhitePart 3023Element 6552100 or 6548261×6
Plate 1 x 4WhitePart 3710Element 6552108 or 6548266×6
Plate 1 x 6WhitePart 3666Element 6552107 or 6548265×2
Plate 2 x 2WhitePart 3022Element 6552099 or 6548260×1
Plate 2 x 3WhitePart 3021Element 6550136 or 302101×1
Plate 2 x 6WhitePart 3795Element 6550146 or 379501×2
Plate 4 x 4WhitePart 3031Element 6552127 or 4243812×1
Plate Round 1 x 1 with Solid StudWhitePart 6141Element 6601919 or 614101×5
Plate Special 1 x 1 with ToothWhitePart 49668Element 6601935 or 4224792×2
Plate Special 1 x 2 with 1 Stud without Groove (Jumper)WhitePart 3794a×7
Steering Stand 1 x 2 with Black Steering WheelWhitePart 3829c01Element 4208543 or 9551×1
Technic Brick 1 x 1 with Pin HoleWhitePart 6541Element 6609542 or 654101×8
Technic Brick 1 x 2 [2 Pin Holes]WhitePart 32000Element 6564911 or 3200001×6
Tile 1 x 6 with GrooveWhitePart 6636Element 6548296 or 663601×2
Tile 2 x 2 with GrooveWhitePart 3068bElement 6548263 or 306801×7
Tile Special 1 x 1 with Clip and Straight TipsWhitePart 2555Element 255501×6
Wedge Plate 4 x 2 LeftWhitePart 41770Element 6552119 or 4161326×3
Wedge Plate 4 x 2 RightWhitePart 41769Element 6552118 or 4160857×3
Dark Bluish Gray
131 pieces
Bracket 1 x 2 - 2 x 2Dark Bluish GrayPart 44728Element 6117972 or 6048854×2
Brick 1 x 1Dark Bluish GrayPart 3005Element 4211098×3
Brick 1 x 10Dark Bluish GrayPart 6111Element 4211107×1
Brick 1 x 2Dark Bluish GrayPart 3004Element 4211088×9
Brick 1 x 4Dark Bluish GrayPart 3010Element 4211103×1
Brick 2 x 2 CornerDark Bluish GrayPart 2357Element 4211109×4
Brick 2 x 4Dark Bluish GrayPart 3001Element 4211085×1
Brick Curved 1 x 2 x 1 1/3 with Curved TopDark Bluish GrayPart 6091Element 6411327 or 4210797×1
Brick Curved Inverted 6 x 1Dark Bluish GrayPart 42023Element 4210779×8
Brick Round 1 x 1 with Fins, Open StudDark Bluish GrayPart 4588Element 6331222 or 6321195×4
Brick Round 2 x 2 with Axle HoleDark Bluish GrayPart 3941Element 4249139×7
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Dark Bluish GrayPart 54200Element 4504378 or 4244373Also in Black×20
Brick Sloped 33° 3 x 1Dark Bluish GrayPart 4286Element 4211045×1
Brick Special 1 x 1 Studs on 4 SidesDark Bluish GrayPart 4733Element 4210700×2
Brick Special 1 x 4 with 4 Studs on One SideDark Bluish GrayPart 30414Element 4210725×6
Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 TeethDark Bluish GrayPart 44302aElement 4210884×2
Plate 1 x 2Dark Bluish GrayPart 3023Element 4211063×2
Plate 2 x 4Dark Bluish GrayPart 3020Element 4211065×2
Plate 4 x 6Dark Bluish GrayPart 3032Element 4211115 or 3032199×1
Plate 6 x 10Dark Bluish GrayPart 3033Element 4211114×1
Plate 8 x 8Dark Bluish GrayPart 41539Element 4210802×4
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]Dark Bluish GrayPart 2654Element 4613980 or 4278274×11
Plate Special 1 x 2 Side Handle [Free Ends]Dark Bluish GrayPart 2540Element 4210660×10
Rock Panel Triangular 3 x 8 x 7Dark Bluish GrayPart 6083Element 4216709×1
Technic Brick 1 x 6 [5 Pin Holes]Dark Bluish GrayPart 3894Element 4210917 or 3894199×8
Tile 1 x 4 with Train Controls PrintDark Bluish GrayPart 2431pr0028Element 6020825 or 4215740×2
Tile 1 x 6 with GrooveDark Bluish GrayPart 6636Element 4210651×12
Tile Special 1 x 2 Grille with Bottom GrooveDark Bluish GrayPart 2412bElement 4210631×3
Tile Special 2 x 2 with Top PinDark Bluish GrayPart 2460Element 4211129×2
Blue
61 pieces
Brick 1 x 2BluePart 3004Element 4613959 or 300423×2
Brick 1 x 3BluePart 3622Element 362223×6
Brick Round 1 x 1 Open StudBluePart 3062bElement 306223×8
Brick Sloped 33° 3 x 1BluePart 4286Element 428623×2
Brick Special 1 x 1 with HeadlightBluePart 4070Element 407023×2
Plate 1 x 4BluePart 3710Element 371023×1
Plate 2 x 10BluePart 3832Element 383223×1
Plate 2 x 3BluePart 3021Element 302123×3
Plate 2 x 6BluePart 3795Element 379523×1
Plate 4 x 4BluePart 3031Element 4243815 or 303123×2
Technic Pin 1/2 without Friction RidgesBluePart 4274Element 4143005×20
Tile 2 x 2 with GrooveBluePart 3068bElement 306823×4
Tile Special 1 x 2 Grille with Bottom GrooveBluePart 2412bElement 241223×5
Wedge Plate 4 x 2 LeftBluePart 41770Element 6430083 or 4161330×2
Wedge Plate 4 x 2 RightBluePart 41769Element 6430076 or 4160867×2
Black
48 pieces
Bar 1 x 4 x 2BlackPart 6187Element 4141349 or 4121537×2
Brick Round 1 x 1 Open StudBlackPart 3062bElement 306226×2
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)BlackPart 54200Element 4504382 or 4287159Also in Dark Bluish Gray×4
Brick Special 1 x 1 with Studs on 2 SidesBlackPart 47905Element 4214559×2
Brick Special 1 x 2 with Studs on 2 SidesBlackPart 52107Element 4253815×5
Dish 2 x 2 Inverted [Radar]BlackPart 4740Element 474026×3
Equipment Camera with Side Sight [aka Space Gun]BlackPart 4360Element 436026×6
Lever Small Base with Black LeverBlackPart 298c02Element 735871 spare in the box×2
Plate 4 x 4BlackPart 3031Element 4243819 or 303126×1
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)BlackPart 4032aElement 403226×4
Plate Special 1 x 1 with Clip Horizontal [Thick U Clip]BlackPart 6019Element 601976 or 601926×2
Technic Brick 1 x 2 [1 Pin Hole]BlackPart 3700Element 370026×4
Turntable 2 x 2 Plate, BaseBlackPart 3680Element 368076 or 368026×3
Tyre 30.4 x 14 Offset TreadBlackPart 30391Element 4140670 or 3039126×8
Trans-Yellow
13 pieces
Plate Round 1 x 1 with Solid StudTrans-YellowPart 6141Element 6514056 or 6240216×13
Trans-Dark Blue
11 pieces
Brick Round 1 x 1 Open StudTrans-Dark BluePart 3062bElement 6514233 or 6238044×11
Red
8 pieces
Brick Round 2 x 2 with Axle HoleRedPart 3941Element 614321 or 394121×4
Brick Round 2 x 2 x 1 2/3 Dome Top, Blocked Open StudRedPart 30151aElement 4262579 or 4118935×4
Trans-Neon Green
6 pieces
Brick Round 2 x 2 with Axle HoleTrans-Neon GreenPart 3941Element 6273157 or 611649×6
Trans-Brown
3 pieces
Windscreen 7 x 4 x 2 RoundTrans-BrownPart 30384Element 4262614 or 4129574×2
Windscreen 8 x 4 x 2 Curved [2 Dual-Fingered Click Hinges]Trans-BrownPart 46413Element 4199601×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 10191-1[No Color/Any Color]Part 10191Element 4522044×1
Minifigures
8 figures
Star Justice Droid, WhiteMinifigure, checked as a whole figure×1
Star Justice Astronaut, Beard, Plain Light Bluish GrayMinifigure, checked as a whole figure×1
Star Justice Astronaut, Glasses, Plain Light Bluish GrayMinifigure, checked as a whole figure×1
Star Justice Astronaut, Beard Stubble, Plain Light Bluish GrayMinifigure, checked as a whole figure×2
Star Justice Droid, Light Bluish GrayMinifigure, checked as a whole figure×3
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.