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.
1,046 pieces in 279 part and color combinations, plus 1 minifigure.
The official piece count includes the 2 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 2Tan ×10Light Nougat ×8Tan is yellower and darker than Light Nougat.
Brick Wedged, Curved 2 x 1 with Stud Notch LeftTan ×2Dark Tan ×5Tan is lighter than Dark Tan.
Brick Wedged, Curved 2 x 1 with Stud Notch RightTan ×2Dark Tan ×5Tan is lighter than Dark Tan.
Wedge Plate 2 x 2 LeftTan ×1Dark Tan ×1Tan is lighter than Dark Tan.
Brick Special 1 x 1 x 1 2/3 with Studs on 1 SideBlack ×2Dark Bluish Gray ×8Black is darker than Dark Bluish Gray.
Plate 1 x 2Black ×2Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
3 more look-alike pairs
Plate 1 x 4Black ×12Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate 2 x 2Black ×2Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate 2 x 2 CornerBlack ×12Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Panel Curved, Quarter, with Bars at Each EndWhitePart 87375Element 6530977 or 6514485×2
Technic Beams
2 pieces
Technic Beam 1 x 2 ThinDark Bluish GrayPart 41677Element 6338422 or 4210980×2
Technic Pins
2 pieces
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×2
Transportation - Land
2 pieces
Wheel Arch, Mudguard 2 x 3 x 1 1/3 with 2 x 2 PlateSand GreenPart 49097Element 6401018×2
Stickers
1 piece
Sticker Sheet for Set 75403-1[No Color/Any Color]Part 10111173Element 6524566×1
Technic Beams Special
1 piece
Technic Beam 1 x 2 with Ball Joint Holes in BallBlackPart 67697Element 6338171×1
Technic Connectors
1 piece
Technic Axle Connector 2 x 3 with Ball Socket, Closed SidesBlackPart 67695Element 6338289×1
Tools
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Minifigures
1 figure
Grogu / The Child (Baby Yoda), 25128 BodyMinifigure, 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.