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.
957 pieces in 229 part and color combinations, plus 5 minifigures.
LEGO counts 973 pieces. This inventory comes from a separate parts catalog and lists 984, including the 27 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.
Technic Rotation Joint Disk with Pin and Double Rotation Joint Ball HalfLight Bluish GrayPart 79505Element 6372460×2
Tile Special Round 1 x 1 with Hollow BarLight Bluish GrayPart 20482Element 62588311 spare in the box×2
Light Aqua
84 pieces
Brick Curved 1 x 2 x 1 1/3 with Curved TopLight AquaPart 6091Element 6411361 or 6097304×10
Brick Curved Inverted 2 x 1Light AquaPart 24201Element 6336530 or 6138663×2
Brick Sloped 45° 2 x 1 Triple with Inside Stud HolderLight AquaPart 15571Element 6137764×20
Brick Sloped Inverted 45° 2 x 1Light AquaPart 3665Element 6306030×2
Brick Wedged, Sloped 4 x 4 PointedLight AquaPart 22391Element 6425458×5
Creature Body Part, Dragon Head Upper Jaw with Spikes with Trans-Light Blue Pattern and Dark Blue Eyes, Medium Blue Markings PrintLight AquaPart 100588pat0001pr0001Element 6421029×1
Plate 1 x 1Light AquaPart 3024Element 6058016 or 60150402 spares in the box×10
Plate 1 x 2Light AquaPart 3023Element 6146701 or 6015054×19
Plate 1 x 4Light AquaPart 3710Element 6141592 or 6015057×2
Tile Round 1 x 1 QuarterLight AquaPart 25269Element 61998862 spares in the box×12
Tile Round 2 x 2 with Bottom Stud HolderLight AquaPart 14769Element 6096948×1
Pearl Gold
73 pieces
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, SmallPearl GoldPart 53451Element 6270109 or 46181951 spare in the box×2
Animal Body Part, Horn Stacked 45 deg. with Axle ConnectorsPearl GoldPart 2142Element 6417338×2
Brick Special 2 x 5 with Slope, Studs on SidePearl GoldPart 79897Element 6371694×2
Brick Wedged, Curved 2 x 3 x 2/3 Two Studs, Wing EndPearl GoldPart 47456Element 6357918 or 4286599×2
Cone 1 x 1 [Top Groove]Pearl GoldPart 59900Element 4529247×4
Creature Body Part, Barb Large (Claw, Talon) with ClipPearl GoldPart 16770Element 6293489 or 6141591×18
Fin Jagged with Axle HolePearl GoldPart 76919Element 6342592×4
Large Figure Weapon Sword with Axle ConnectorPearl GoldPart 2144Element 6508001 or 6417341×1
Plate Round 1 x 1 with Open StudPearl GoldPart 85861Element 6190252 or 61414991 spare in the box×5
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)Pearl GoldPart 15573Element 6092594×2
Plate Special Round 1 x 1 with Hollow Stud and Horizontal Bar 1LPearl GoldPart 32828Element 63351111 spare in the box×2
Technic Axle Connector 2 x 3 with Ball Socket, Closed SidesPearl GoldPart 67695Element 6416543×4
Technic Pin Connector Round 1L [Beam]Pearl GoldPart 18654Element 62568031 spare in the box×4
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole]Pearl GoldPart 65304Element 6593341 or 6287672×4
Technic Tooth 1 x 3 with Axle Hole [Hollow Underside]Pearl GoldPart 48267Element 6385549×6
Tile Special 2 x 2 Corner with Cut Corner - FacetPearl GoldPart 27263Element 6388241 or 6207046×4
Brick Curved 2 x 1 No Studs [1/2 Bow]Sand BluePart 11477Element 6179812×4
Brick Curved 2 x 2 x 2/3Sand BluePart 15068Element 6166865×2
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Sand BluePart 54200Element 60626861 spare in the box×4
Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no studSand BluePart 28192Element 6248952×8
Large Figure Cover 4 x 3 x 2 with Bar, 4 Studs, RidgedSand BluePart 79896Element 6425461×1
Plate 1 x 2Sand BluePart 3023Element 6198156 or 4167468×8
Plate 2 x 2Sand BluePart 3022Element 6062089 or 4153607×8
Tile 1 x 2 with GrooveSand BluePart 3069bElement 6142505 or 4170251×9
Tile 2 x 4 with GrooveSand BluePart 87079Element 6124349 or 6052832×1
Trans-Light Blue
35 pieces
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Trans-Light BluePart 54200Element 6245277 or 60734452 spares in the box×18
Large Figure Weapon Sword with Axle ConnectorTrans-Light BluePart 2144Element 6586640 or 6508010×4
Panel 1 x 2 x 2 [Side Supports / Hollow Studs]Trans-Light BluePart 87552Element 6581813 or 6253230×1
Plate 1 x 2Trans-Light BluePart 3023Element 6514007 or 6240222×2
Plate Special 1 x 1 with ToothTrans-Light BluePart 49668Element 6514065 or 6292200×10
Red
23 pieces
Animal Body Part, Skull, CattleRedPart 13695Element 6421596×1
Brick 1 x 1 x 3RedPart 14716Element 6061700×2
Brick Curved 4 x 1 Double, No StudsRedPart 93273Element 4633914×1
Brick Special 1 x 1 with Stud on 1 SideRedPart 87087Element 4558886×2
Cone 1 x 1 [Top Groove]RedPart 59900Element 4529234×2
Hat Conical Asian with Raised CenterRedPart 26007Element 6424474 or 6251020×1
Plate Special 1 x 2 with Clips Horizontal [Open O Clips]RedPart 60470bElement 6360036 or 4556153×2
Plate Special Round 1 x 2 Half Circle with Stud (Jumper)RedPart 1745Element 6510057 or 6400110×2
Technic Pin 1/2 with 2L Bar ExtensionRedPart 61184Element 6350694 or 4526119×1
Technic Pin 1/2 with FrictionRedPart 89678Element 63781201 spare in the box×2
Tile 2 x 6RedPart 69729Element 6335578×2
Tile Special 1 x 1 with Clip with Rounded EdgesRedPart 15712Element 6348058 or 6072998×5
Dark Tan
22 pieces
Bracket 1 x 2 - 1 x 2 InvertedDark TanPart 99780Element 6250168×7
Plate 1 x 2Dark TanPart 3023Element 4528604 or 4497082×4
Plate 2 x 2 CornerDark TanPart 2420Element 4550168×4
Plate Round 6 x 6 with HoleDark TanPart 11213Element 6166127×1
Technic Axle 3 with StudDark TanPart 6587Element 6031821 or 6013821×2
Technic Beam 1 x 2 Thick with Pin Hole and Axle HoleDark TanPart 60483Element 6344864 or 6170313×4
Medium Azure
22 pieces
Plate 1 x 2Medium AzurePart 3023Element 6603337 or 6097419×9
Plate 2 x 2 CornerMedium AzurePart 2420Element 6603344 or 6293739×4
Plate 2 x 4Medium AzurePart 3020Element 6603317 or 6013826×4
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)Medium AzurePart 4032aElement 6109752×3
Technic Brick 1 x 1 with Pin HoleMedium AzurePart 6541Element 6145253×2
Reddish Brown
8 pieces
Bracket 1 x 1 - 1 x 1 InvertedReddish BrownPart 36840Element 6238874×2
Brick Curved 1 x 1 x 2/3 Double Curved Top, No StudsReddish BrownPart 49307Element 6371437×2
Plate Special 1 x 2 with Pin Hole on TopReddish BrownPart 11458Element 6138664×2
Plate Special 2 x 2 with Only 2 studsReddish BrownPart 33909Element 6196221×2
Tan
7 pieces
Brick 2 x 3TanPart 3002Element 4159739 or 300205×1
Brick Special 1 x 1 with HeadlightTanPart 4070Element 4280137 or 4118793×2
Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom PinTanPart 32064aElement 6219794 or 4233494×4
Blue
4 pieces
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×4
Dark Turquoise
3 pieces
Brick Special 1 x 1 with Stud on 1 SideDark TurquoisePart 87087Element 6213781×2
Brick and Axle Separator v2.0Dark TurquoisePart 96874Element 6254100×1
Bright Light Blue
2 pieces
Hinge Brick 2 x 2 Top Plate ThinBright Light BluePart 6134Element 6385302×2
Trans-Bright Green
2 pieces
Projectile, Spring Shooter Ammunition 8L BarTrans-Bright GreenPart 15303Element 6287551 or 6062599×2
Flat Silver
1 piece
Weapon Sword / Saber with Curved Blade and HiltFlat SilverPart 25111Element 6172879×1
Trans-Clear
1 piece
Brick Round 2 x 2 with Axle HoleTrans-ClearPart 3941Element 6514281 or 6273152×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 71786-1[No Color/Any Color]Part 10102073Element 6422677×1
Minifigures
5 figures
Zane - EVO, Wraps, Shoulder GuardMinifigure, checked as a whole figure×1
P.I.X.A.L. - EVOMinifigure, checked as a whole figure×1
Bone King - Cape, Crossed BonesMinifigure, checked as a whole figure×1
Bone KnightMinifigure, checked as a whole figure×1
Bone WarriorMinifigure, 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.