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.
1,860 pieces in 301 part and color combinations, plus 2 minifigures.
The official piece count includes the 9 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 1 x 1Black ×18Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Brick 1 x 10Black ×6Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick 1 x 4Black ×13Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick 1 x 6Black ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick 2 x 3Black ×9Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick Sloped 30° 1 x 2 x 2/3Black ×45Dark Bluish Gray ×28Black is darker than Dark Bluish Gray.
16 more look-alike pairs
Brick Sloped 45° 2 x 2Black ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick Sloped 45° 2 x 4Black ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 9 TeethBlack ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 1 x 2Black ×22Dark Bluish Gray ×33Black is darker than Dark Bluish Gray.
Plate 1 x 4Black ×21Dark Bluish Gray ×8Black is darker than Dark Bluish Gray.
Plate 1 x 8Black ×7Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate 4 x 4Black ×1Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 4 x 6Black ×1Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip]Black ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring]Black ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 Side Handle [Free Ends]Black ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 with Door RailBlack ×2Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening]Black ×4Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Tile 1 x 2 with GrooveBlack ×24Dark Bluish Gray ×16Black is darker than Dark Bluish Gray.
Tile 2 x 2 with GrooveBlack ×10Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Tile Special 1 x 1 with Clip with Rounded TipsBlack ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening]RedPart 32064b×4
Dark Tan
6 pieces
Technic Axle 3 with StudDark TanPart 6587Element 6031821 or 6013821×6
Reddish Brown
2 pieces
Technic Pin Connector Round [Slotted]Reddish BrownPart 62462Element 6173132 or 6055781×2
Tan
2 pieces
Technic Axle Pin without Friction Ridges LengthwiseTanPart 3749Element 4666579 or 4186017×2
[No Color/Any Color]
2 pieces
Sticker Sheet 1 for Set 76023-1[No Color/Any Color]Part 17688Element 6075063×1
Sticker Sheet 2 for Set 76023-1[No Color/Any Color]Part 18629Element 6086738 or 6086737×1
Orange
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Trans-Light Blue
1 piece
Panel 1 x 2 x 1 [Rounded Corners]Trans-Light BluePart 4865bElement 6514122 or 6246890×1
Trans-Red
1 piece
Tile Special 1 x 2 Grille with Bottom GrooveTrans-RedPart 2412bElement 6250158 or 4190187×1
Minifigures
2 figures
The Joker with Green Vest and White Face Make-up (Dark Knight Trilogy)Minifigure, checked as a whole figure×1
Batman, Black Suit, Black Cape and Cowl, Copper Utility Belt (56630 Cape)(Dark Knight Trilogy)Minifigure, 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.