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.
635 pieces in 229 part and color combinations, plus 5 minifigures.
The official piece count includes the 35 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.
Weapon Sword Serrated with Bar HolderFlat SilverPart 11107Element 6024040×1
Pearl Titanium
3 pieces
Door 1 x 8 x 12 Castle Gate (Portcullis)Pearl TitaniumPart 89519Element 6037598×1
Launcher, Large Figure Weapon, Zamor Sphere Launcher, Bottom with Axle HolePearl TitaniumPart 98564Element 6021670 or 4649272×2
Tan
2 pieces
Technic Axle Pin without Friction Ridges LengthwiseTanPart 3749Element 4666579 or 4186017×2
Trans-Red
2 pieces
Bar 4L with Flame Protrusions and Marbled Trans-Yellow PatternTrans-RedPart 16768pat0001×1
Wave / Flame Rounded Large with Marbled Trans-Yellow PatternTrans-RedPart 85959pat0003Element 6513987 or 6172283×1
[No Color/Any Color]
2 pieces
Sticker Sheet 1 for Set 70147-1[No Color/Any Color]Part 18502Element 6083649×1
Sticker Sheet 2 for Set 70147-1[No Color/Any Color]Part 18500Element 6083633×1
Orange
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Minifigures
5 figures
Sir FangarMinifigure, checked as a whole figure×1
GorzanMinifigure, checked as a whole figure×1
Strainor with Trans-Light Blue Shoulder ArmorMinifigure, checked as a whole figure×1
Worriz with Shoulder Armor with Fire ChiMinifigure, checked as a whole figure×1
Voom Voom (with 12825 Tile with Clip)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.