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.
553 pieces in 170 part and color combinations, plus 1 minifigure.
The official piece count includes the 30 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.
Brick Curved 2 x 1 No Studs [1/2 Bow]Black ×2Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Hinge Plate 1 x 2 Locking with 1 Finger On TopBlack ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Hinge Plate 1 x 2 Locking with 2 Fingers On End, without Groove, 7 TeethBlack ×2Dark Bluish Gray ×11Black is darker than Dark Bluish Gray.
Plate 2 x 2Black ×3Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate Round 1 x 1 with Open StudBlack ×8Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Tile 1 x 1 with GrooveBlack ×2Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Lipstick with Light Bluish Gray HandleRedPart 93094pat0001Element 6528712 or 61602051 spare in the box×3
Bricks Wedged
10 pieces
Brick Wedged, Curved 2 x 1 with Stud Notch LeftReddish BrownPart 29120Element 6290397×5
Brick Wedged, Curved 2 x 1 with Stud Notch RightReddish BrownPart 29119Element 6290396×5
Bricks Round and Cones
8 pieces
Cone 1 x 1 [Top Groove]Light Bluish GrayPart 59900Element 4529241×4
Brick Round Curved 1 x 1 x 1 1/3 Quarter DomeReddish BrownPart 1871Element 6452011×4
Plates Wedged
8 pieces
Plate Angled 2 x 2 with Step and Hole in CenterDark Bluish GrayPart 79846Element 6395097×2
Wedge Plate 2 x 2 LeftReddish BrownPart 24299Element 6385263×3
Wedge Plate 2 x 2 RightReddish BrownPart 24307Element 6385262×3
Bricks Special
5 pieces
Bracket 3 x 2 x 1 1/3 with Bottom Stud HolderBlackPart 73562Element 6395375×1
Brick Special 1 x 2 with 2 Studs on 1 SideLight Bluish GrayPart 11211Element 6015344×4
Technic Beams Special
2 pieces
Technic Beam 3 x 0.5 Liftarm with Boss and Blocked, Squared Pin HoleLight Bluish GrayPart 61408Element 6331859×2
Technic Gears
2 pieces
Technic Gear Rack 1 x 4Light Bluish GrayPart 3743Element 6457283 or 4211450×2
Technic Special
2 pieces
Technic Brick 1 x 2 with Hole and Dual Beam ExtensionsDark Bluish GrayPart 85943Element 6324639 or 4547958×2
Tiles Round and Curved
2 pieces
Tile Round 1 x 1 QuarterReddish BrownPart 25269Element 61496771 spare in the box×2
Bricks
1 piece
Brick 1 x 4 x 3 with R2-D2, Hologram Brick, '25 YEARS OF LEGO STAR WARS' PrintBlackPart 49311pr0017Element 6483080×1
Minifig Upper Body
1 piece
Arm Mechanical with 2 Clips [Battle Droid]Dark Bluish GrayPart 30377Element 6319332 or 42109001 spare in the box×1
Stickers
1 piece
Sticker Sheet for Set 75381-1[No Color/Any Color]Part 10108617Element 6486653×1
Tools
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Minifigures
1 figure
Droideka / Destroyer DroidMinifigure, 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.