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.
1,405 pieces in 325 part and color combinations, plus 8 minifigures.
The official piece count includes the 51 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 2Red ×4Trans-Red ×13Trans-Red is see-through: hold the piece up to a light.
Plate Round 1 x 1 with Solid StudDark Bluish Gray ×6Flat Silver ×70Dark Bluish Gray is darker than Flat Silver.
Brick Curved 1 x 2 x 1 1/3 with Curved TopBlack ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick Curved 2 x 1 No Studs [1/2 Bow]Black ×8Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / GrateBlack ×4Dark Bluish Gray ×18Black is darker than Dark Bluish Gray.
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Black ×12Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
18 more look-alike pairs
Brick Sloped 30° 1 x 2 x 2/3Black ×18Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 1 x 2Black ×54Dark Bluish Gray ×8Black is darker than Dark Bluish Gray.
Plate 1 x 3Black ×20Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 1 x 4Black ×6Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 1 x 6Black ×2Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate 1 x 8Black ×11Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 2 x 2Black ×24Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate 2 x 2 CornerBlack ×4Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate 2 x 3Black ×22Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 2 x 4Black ×18Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring]Black ×2Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 Side Handle [Free Ends]Black ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 [Side Handle Closed Ends]Black ×8Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)Black ×9Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 with Clip Horizontal on EndBlack ×4Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 with Pin Hole on TopBlack ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Tile Special 1 x 1 with Clip with Rounded EdgesBlack ×3Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Wing, Tail 4 x 1 x 3Black ×2Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3Light Bluish GrayPart 64644Element 4657366×2
Equipment Brush / BroomReddish BrownPart 4332Element 6268855 or 6122108×1
Flags, Banners and Signs
4 pieces
Flag 2 x 2 Trapezoid with Flat Area between ClipsBlackPart 44676Element 4184617×4
Containers
2 pieces
Bucket 1 x 1 x 1 HandleDark Bluish GrayPart 95344Element 6245283 or 61676641 spare in the box×2
Pneumatics
2 pieces
Pneumatic Hose Connector with Axle ConnectorDark Bluish GrayPart 99021Element 6265669 or 6020189×2
Tubes and Hoses
2 pieces
Flexible Hose 8.5L with Tabless Ends (Fixed Ends same color as Tube)BlackPart 73590c03aElement 6327402 or 6288582×2
Animal / Creature Accessories
1 piece
Animal / Creature Accessory, Horse Hitching, 1 x 2 Plate and 2 x 2 Plate [Studded]RedPart 2397Element 6181583 or 4269876×1
Electronics
1 piece
Light Brick 2 x 3 x 1 1/3 with Dark Bluish Gray Base [Yellow LED]Trans-ClearPart 62930Element 6555880 or 6429472×1
Stickers
1 piece
Sticker Sheet for Set 70917-1[No Color/Any Color]Part 34378Element 6195041×1
Tools
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Minifigures
8 figures
Wicked WitchMinifigure, checked as a whole figure×1
Batgirl, Dark Purple Suit, Yellow Cape, Dark Purple Cowl (3626cpr2096)Minifigure, checked as a whole figure×1
Robin with Green Eyes (LEGO Batman Movie)Minifigure, checked as a whole figure×1
Batman, Black Suit, Black Cape and Cowl, Utility Belt (3626cpr2287 Head)Minifigure, checked as a whole figure×1
Alfred Pennyworth, Chauffeur BatsuitMinifigure, checked as a whole figure×1
Polka-Dot ManMinifigure, checked as a whole figure×1
Flying Monkey with Open MouthMinifigure, checked as a whole figure×1
Flying Monkey with Closed MouthMinifigure, 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.