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.
863 pieces in 241 part and color combinations, plus 6 minifigures.
The piece count includes the 25 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.
Tile 1 x 2 with GrooveTan ×1Dark Tan ×3Tan is lighter than Dark Tan.
Brick 2 x 2Black ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 1 x 2Black ×4Dark Bluish Gray ×14Black is darker than Dark Bluish Gray.
Plate 1 x 4Black ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 4 x 12Black ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 4 x 8Black ×1Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
5 more look-alike pairs
Plate 6 x 14Black ×2Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Technic Brick 1 x 1 with Pin HoleBlack ×2Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Tile 1 x 4 with GrooveBlack ×5Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Tile 1 x 6 with GrooveBlack ×4Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Tile 1 x 8 with GrooveBlack ×6Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Tile 1 x 4 with GrooveDark BrownPart 2431Element 6313874 or 4536989×2
Trans-Red
7 pieces
Cone 1 x 1 [Top Groove]Trans-RedPart 59900Element 6514021 or 6337596×1
Plate 1 x 1Trans-RedPart 3024Element 6513963 or 6252042×4
Plate Round 1 x 1 with Solid StudTrans-RedPart 6141Element 6514051 or 6208450×2
Pearl Gold
6 pieces
Plate Round 1 x 1 with Solid StudPearl GoldPart 6141Element 4523159×4
Tile Special 1 x 2 Grille with Bottom GroovePearl GoldPart 2412bElement 4490599×1
Weapon SaiPearl GoldPart 98139Element 6270135 or 4646866×1
Dark Tan
3 pieces
Tile 1 x 2 with GrooveDark TanPart 3069bElement 4496699Also in Tan×3
Pearl Titanium
2 pieces
Door 1 x 8 x 12 Castle Gate (Portcullis)Pearl TitaniumPart 89519Element 6037598×1
Weapon SaiPearl TitaniumPart 98139Element 6270137 or 4646870×1
Dark Green
1 piece
Seat / Chair 2 x 2 with Center Sprue MarkDark GreenPart 4079bElement 4538760×1
Dark Orange
1 piece
Support Round 1 x 1 x 6 Solid PillarDark OrangePart 43888Element 6345561 or 6030306×1
Dark Red
1 piece
Plate Special 1 x 2 with 1 Stud with Groove (Jumper)Dark RedPart 3794bElement 4539063×1
Orange
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Trans-Green
1 piece
Plate Round 1 x 1 with Solid StudTrans-GreenPart 6141Element 6514057 or 6240221×1
Trans-Light Blue
1 piece
Tile Round 1 x 1Trans-Light BluePart 98138Element 6514192 or 6274739×1
White
1 piece
Technic Beam 1 x 2 ThinWhitePart 41677Element 6371416 or 4163533×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 79117-1[No Color/Any Color]Part 17426Element 6070897×1
Minifigures
6 figures
Foot Soldier with Face Wrap (2014 Movie)Minifigure, checked as a whole figure×2
Splinter with LegsMinifigure, checked as a whole figure×1
Leonardo with Scabbard (2014 Movie)Minifigure, checked as a whole figure×1
Shredder with Dark Blue Cape (2014 Movie)Minifigure, checked as a whole figure×1
Donatello with Goggles (2014 Movie)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.