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.
793 pieces in 236 part and color combinations, plus 6 minifigures.
The official piece count includes the 28 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.
Technic Brick Special 1 x 2 with Pin Hole and 1 x 2 PlateLight Bluish GrayPart 73109Element 6326478×2
Technic Rotation Joint Disk with Pin and 3L Beam ThickLight Bluish GrayPart 44225Element 6671155 or 6332151×2
Tan
14 pieces
Bracket 1 x 2 - 1 x 2 InvertedTanPart 99780Element 6313611×3
Brick 2 x 2TanPart 3003Element 4114306 or 300305×3
Brick Special 1 x 2 Palisade [aka Log]TanPart 30136Element 4218749 or 4114053×3
Brick Special 1 x 4 with 4 Studs on One SideTanPart 30414Element 4201062 or 4177990×2
Plate Special 1 x 2 with Three Teeth [Tri-Tooth]TanPart 15208Element 6046907×1
Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper)TanPart 34103Element 6211966×2
Trans-Orange
12 pieces
Brick Sloped 45° 1 x 1 x 2/3 Quadruple Convex [Pyramid]Trans-OrangePart 22388Element 6581704 or 62505841 spare in the box×3
Plate Round 1 x 1 with Solid StudTrans-OrangePart 6141Element 6514059 or 62402271 spare in the box×5
Plate Special 1 x 1 with ToothTrans-OrangePart 49668Element 6514064 or 6237278×4
Dark Tan
9 pieces
Brick Sloped 45° 1 x 1 x 2/3 Quadruple Convex [Pyramid]Dark TanPart 22388Element 6405699×4
Plate 2 x 2 CornerDark TanPart 2420Element 4550168×1
Plate Special 1 x 2 Rounded with 2 Open StudsDark TanPart 35480Element 6231386×4
Reddish Brown
5 pieces
Bar 6L with Stop RingReddish BrownPart 63965Element 6170468 or 61557271 spare in the box×1
Brick Special 1 x 1 Studs on 4 SidesReddish BrownPart 4733Element 6133765 or 4528447×2
Technic Axle 3 with StopReddish BrownPart 24316Element 6135494×2
Blue
4 pieces
Technic Pin Long with Friction Ridges Lengthwise, 1 Center SlotBluePart 42924Element 6299413×4
Trans-Light Blue
4 pieces
Bar 4L (Lightsaber Blade / Wand)Trans-Light BluePart 30374Element 6507882 or 6170187×1
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]Trans-Light BluePart 2654Element 6581775 or 6171733×1
Rock 1 x 1 Crystal 5 PointTrans-Light BluePart 30385Element 6507865 or 6296003×2
Lime
2 pieces
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, MediumLimePart 87747Element 63112151 spare in the box×1
Plate Round 1 x 1 with Open StudLimePart 85861Element 61902511 spare in the box×1
Pearl Titanium
2 pieces
Technic Axle Connector 2 x 3 QuadruplePearl TitaniumPart 11272Element 6251539 or 6022718×2
White
2 pieces
Plate 1 x 5WhitePart 78329Element 6550185 or 6350399×2
Medium Azure
1 piece
Plate Special 1 x 2 Rounded with 2 Open StudsMedium AzurePart 35480Element 6396673×1
Trans-Bright Green
1 piece
Minifig Head [Plain] [Vented Stud - 2 Holes]Trans-Bright GreenPart 28621Element 6513994 or 6276022×1
[No Color/Any Color]
1 piece
Wings, Dragon with Sand Green Spines, Red/Tan Markings Print [Sheet of 2][No Color/Any Color]Part 118944Element 6624494 or 6609328×1
Minifigures
6 figures
Ice MonsterMinifigure, checked as a whole figure×1
Empress BeatrixMinifigure, checked as a whole figure×1
Arin (Draconus Robes)Minifigure, checked as a whole figure×1
Acid Monster, TailMinifigure, checked as a whole figure×1
Sora, Mask (Draconus Robes)Minifigure, checked as a whole figure×1
Wyldfyre, Shoulder Guard, HipwearMinifigure, 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.