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.
974 pieces in 231 part and color combinations, plus 8 minifigures.
LEGO counts 1,003 pieces. This inventory comes from a separate parts catalog and lists 1,016, including the 42 parts inside the minifigures; the two do not always count the same elements, so their totals differ. 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 Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]Black ×2Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Weapon Sword Crystalized with Hilt and PinTrans-Dark PinkPart 86146Element 6376231×1
Weapon Sword with Jagged Edges, AxleTrans-Dark PinkPart 98856Element 6384382×2
Pearl Titanium
10 pieces
Bar 1L with Top Stud and Two Side StudsPearl TitaniumPart 92690Element 6158415×3
Brick Wedged, Curved 2 x 3 x 2/3 Two Studs, Wing EndPearl TitaniumPart 47456Element 6167034×3
Brick Wedged, Sloped 4 x 4 PointedPearl TitaniumPart 22391Element 6167897×2
Creature Body Part, Dragon Head with Trans-Dark Pink Horns PatternPearl TitaniumPart 82276pat0003Element 6384937×1
Equipment Hand ArmorPearl TitaniumPart 15407Element 6168708 or 6104199×1
Dark Pink
8 pieces
Brick Special 1 x 2 with 2 Studs on 1 SideDark PinkPart 11211Element 6388026×1
Plate 1 x 6Dark PinkPart 3666Element 6097094×1
Plate Round 1 x 1 with Solid StudDark PinkPart 6141Element 6195315 or 42435761 spare in the box×4
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)Dark PinkPart 4032aElement 6326495×2
Orange
8 pieces
Technic Tread AttachmentOrangePart 24375Element 61855511 spare in the box×8
Dark Purple
5 pieces
Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope EndDark PurplePart 47457Element 6109766 or 4579024×1
Plate Angled 2 x 2 with Step and Hole in CenterDark PurplePart 79846Element 6390297×2
Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip]Dark PurplePart 60897Element 6352224 or 6176821×2
White
5 pieces
Plate 1 x 4WhitePart 3710Element 6552108 or 6548266×1
Plate 2 x 3WhitePart 3021Element 6550136 or 302101×4
Blue
4 pieces
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×4
Tan
4 pieces
Brick Sloped 30° 1 x 2 x 2/3TanPart 85984Element 4624086×1
Brick Sloped 45° 2 x 1 with Bottom PinTanPart 3040bElement 4121972 or 4113989×2
Window 1 x 4 x 3 without Shutter TabsTanPart 60594Element 4578109×1
Trans-Red
3 pieces
Projectile, Spring Shooter Ammunition 8L BarTrans-RedPart 15303Element 6287550 or 6054526×3
Flat Silver
2 pieces
Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard]Flat SilverPart 21459Element 61165931 spare in the box×2
Magenta
2 pieces
Plate 2 x 2 CornerMagentaPart 2420Element 6179916 or 6101075×2
Medium Azure
2 pieces
Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard]Medium AzurePart 21459Element 62641211 spare in the box×2
Yellow
2 pieces
Technic Brick 1 x 1 with Pin HoleYellowPart 6541Element 654124×2
Dark Turquoise
1 piece
Brick and Axle Separator v2.0Dark TurquoisePart 96874Element 6254100×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 71775-1[No Color/Any Color]Part 10001123Element 6385508×1
Minifigures
8 figures
Vengestone WarriorMinifigure, checked as a whole figure×1
Jay, Crystalized ArmorMinifigure, checked as a whole figure×1
The Mechanic, Shoulder ArmorMinifigure, checked as a whole figure×1
Lil' Nelson, Medium Azure HoodMinifigure, checked as a whole figure×1
Garmadon / Oni GarmadonMinifigure, checked as a whole figure×1
Master Wu, Crystalized RobesMinifigure, checked as a whole figure×1
General PythorMinifigure, checked as a whole figure×1
Samurai X / Nya, Crystalized ArmorMinifigure, 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.