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.
611 pieces in 212 part and color combinations, plus 6 minifigures.
The official piece count includes the 32 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 3Black ×2Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Tile Special 1 x 1 with Clip with Rounded EdgesBlack ×2Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Tile Special 1 x 2 Grille with Bottom GrooveBlack ×3Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Technic Beam 1 x 4 ThinYellowPart 32449Element 6327559 or 4199345×4
Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom PinYellowPart 32064aElement 6206240 or 4233484×2
Technic Bush 1/2 Smooth with Axle Hole Semi-ReducedYellowPart 32123bElement 6271167 or 32123242 spares in the box×3
Tile 1 x 4 with Black Diagonal Stripes PrintYellowPart 2431pr0017Element 4119091×1
Tile Special 1 x 2 with HandleYellowPart 2432Element 243224×2
Dark Tan
23 pieces
Brick 1 x 2Dark TanPart 3004Element 4521914 or 4497069×1
Brick 2 x 2Dark TanPart 3003Element 4497068 or 4255416×2
Brick 2 x 4Dark TanPart 3001Element 4497066 or 4247145×3
Brick Curved 2 x 1 No Studs [1/2 Bow]Dark TanPart 11477Element 6101254×1
Brick Sloped 45° 2 x 1 with Bottom PinDark TanPart 3040bElement 4530678 or 4251973×4
Brick Wedged, Sloped 45° 2 x 2 CornerDark TanPart 13548Element 6331865 or 6186256×2
Plate 1 x 4Dark TanPart 3710Element 4626904 or 4497088×3
Plate 2 x 2 CornerDark TanPart 2420Element 4550168×1
Plate 2 x 4Dark TanPart 3020Element 4497077 or 4267874×3
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)Dark TanPart 15573Element 6092591×3
Flat Silver
22 pieces
Plate Round 1 x 1 with Solid StudFlat SilverPart 6141Element 46336912 spares in the box×19
Weapon Harpoon [Smooth Shaft]Flat SilverPart 18041Element 6162578 or 60784711 spare in the box×3
Blue
17 pieces
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×5
Technic Pin 1/2 without Friction RidgesBluePart 4274Element 41430051 spare in the box×6
Technic Pin Long with Friction Ridges Lengthwise, 2 Center SlotsBluePart 6558Element 4514553×6
Trans-Yellow
16 pieces
Glass for Aircraft Fuselage Curved Forward 6 x 10 Top with 5 Window PanesTrans-YellowPart 18908Element 6245292 or 6210806×1
Plate 1 x 2Trans-YellowPart 3023Element 6514002 or 6240211×11
Plate Round 1 x 1 with Solid StudTrans-YellowPart 6141Element 6514056 or 62402162 spares in the box×4
Reddish Brown
10 pieces
Brick Curved 1 x 2 x 1 1/3 with Curved TopReddish BrownPart 6091Element 6335567 or 6035547×4
Brick Sloped 45° 2 x 1 with Bottom PinReddish BrownPart 3040bElement 4211199×2
Plate 2 x 2Reddish BrownPart 3022Element 4613975 or 4216695×3
Plate Special 2 x 2 with Only 2 studsReddish BrownPart 33909Element 6196221×1
Tan
7 pieces
Brick Special 2 x 2 with Pin and Axle HoleTanPart 6232Element 6347700 or 4185273×2
Technic Brick 1 x 2 [2 Pin Holes]TanPart 32000Element 4523145 or 4143352×1
Technic Pin 3/4TanPart 32002Element 6663097 or 60139381 spare in the box×4
Trans-Light Blue
7 pieces
Plate 1 x 2Trans-Light BluePart 3023Element 6514007 or 6240222×7
Trans-Red
4 pieces
Tile Round 1 x 1Trans-RedPart 98138Element 6514189 or 62586072 spares in the box×4
Trans-Clear
2 pieces
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]Trans-ClearPart 2654Element 6581772 or 6163901×2
Trans-Neon Orange
2 pieces
Technic Wedge Belt Wheel [aka Pulley]Trans-Neon OrangePart 4185Element 6124680 or 4172601×2
Lime
1 piece
Brick 2 x 2LimePart 3003Element 4220632 or 4122451×1
Medium Blue
1 piece
Tile 2 x 4 with GrooveMedium BluePart 87079Element 6590056 or 6383458×1
Orange
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Pearl Titanium
1 piece
Barrel Half Large with Axle HolePearl TitaniumPart 64951Element 6197966×1
Trans-Orange
1 piece
Dish 3 x 3 Inverted [Radar]Trans-OrangePart 43898Element 6507921 or 6343710×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 70923-1[No Color/Any Color]Part 36978Element 6214732×1
Minifigures
6 figures
Batman, Black Suit, Black Cape and Cowl, Utility Belt (3626cpr9996 Head)Minifigure, checked as a whole figure×1
Catwoman with Utility BeltMinifigure, checked as a whole figure×1
Dick Grayson with Red Sweater with Dark Red Robins PatternMinifigure, checked as a whole figure×1
Batman, Black Suit, Black Cape, Space Helmet (Space Suit)Minifigure, checked as a whole figure×1
Batman, Reggae Man OutfitMinifigure, checked as a whole figure×1
Batman, Dark Red Suit, Bright Light Orange Cape, Dark Red Cowl (Firestarter Outfit)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.