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.
2,393 pieces in 437 part and color combinations, plus 8 minifigures.
LEGO counts 2,433 pieces. This inventory comes from a separate parts catalog and lists 2,438, including the 45 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.
Plate 1 x 4Tan ×5Dark Tan ×3Tan is lighter than Dark Tan.
Plate 1 x 8Tan ×4Dark Tan ×11Tan is lighter than Dark Tan.
Plate Special 1 x 2 Rounded with 2 Open StudsTan ×2Dark Tan ×19Tan is lighter than Dark Tan.
Tile 1 x 2 with GrooveTan ×8Dark Tan ×1Tan is lighter than Dark Tan.
Tile 1 x 4 with GrooveTan ×3Dark Tan ×14Tan is lighter than Dark Tan.
Sticker Sheet 1 for Set 80039-1[No Color/Any Color]Part 10100004Element 6398795×1
Sticker Sheet 2 for Set 80039-1[No Color/Any Color]Part 10068823Element 6316574×1
Technic Steering, Suspension and Engine
2 pieces
Technic Link 1 x 9BlackPart 32293Element 6244698 or 4141300×2
Flags, Banners and Signs
1 piece
Flag 4 x 1 Wavy [First Wave Right]RedPart 4495bElement 6268946 or 449521×1
Pneumatics
1 piece
Pneumatic Hose Connector with Axle ConnectorDark Bluish GrayPart 99021Element 6265669 or 6020189×1
Rock
1 piece
Rock 1 x 1 Jewel / Gem 24 FacetTrans-RedPart 30153Element 6513969 or 6247785×1
Tools
1 piece
Brick and Axle Separator v2.0Dark TurquoisePart 96874Element 6254100×1
Windows and Doors
1 piece
Window 1 x 4 x 3 without Shutter TabsWhitePart 60594Element 4530590 or 4520702×1
Minifigures
8 figures
Monkie Kid, White Hoodie. Neck BracketMinifigure, checked as a whole figure×1
Heaven FairyMinifigure, checked as a whole figure×1
Warden Monkey KingMinifigure, checked as a whole figure×1
Monkey King, Dark Turquoise Bow, WinkingMinifigure, checked as a whole figure×1
Taishang LaojunMinifigure, checked as a whole figure×1
Nezha, Short LegsMinifigure, checked as a whole figure×1
ErlangMinifigure, checked as a whole figure×1
Warrior Monkey KingMinifigure, 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.