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.
1,295 pieces in 372 part and color combinations, plus 4 minifigures.
The official piece count includes the 16 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.
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 1 x 1White ×11Trans-Clear ×10Trans-Clear is see-through: hold the piece up to a light.
Brick Round 1 x 1 Open StudWhite ×6Trans-Clear ×1Trans-Clear is see-through: hold the piece up to a light.
Treasure Chest Bottom with Rear Slots, No GrooveMedium NougatPart 4738cElement 6102984×1
Treasure Chest Lid, Flat with 2 StudsMedium NougatPart 80835Element 6394960×1
Hinges, Arms and Turntables
2 pieces
Hinge Plate 1 x 2 Locking with 2 Fingers On End, without Groove, 7 TeethDark Bluish GrayPart 54657Element 6267047×1
Hinge Plate 1 x 2 Locking with 1 Finger on Side, without GrooveLight Bluish GrayPart 44567bElement 6266251×1
Technic Bricks
2 pieces
Technic Brick 1 x 1 with Pin HoleWhitePart 6541Element 6609542 or 654101×2
Technic Pins
2 pieces
Technic Pin with Friction Ridges Lengthwise with No Center SlotsBlackPart 61332Element 62798751 spare in the box×2
Animal / Creature Body Parts
1 piece
Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End SectionReddish BrownPart 40379Element 6372430×1
Energy Effects
1 piece
Flame / Headwear Accessory Plume / Feather, Triple PointBluePart 64647Element 6289361 or 61000391 spare in the box×1
Minifig Heads
1 piece
Minifig Head (No Face), Reddish Brown World Map Missing Japan, Hawaii PrintTanPart 3626cpr3515Element 6354186×1
Minifig Headwear
1 piece
Helmet with Fixed Grill and Plume Hole (Castle)Flat SilverPart 4503Element 6125711×1
Stickers
1 piece
Sticker Sheet for Set 42638-1[No Color/Any Color]Part 10107621Element 6480921×1
Supports, Girders and Cranes
1 piece
Support Round 2 x 2 x 2 Stand with Reinforced UndersideWhitePart 19798Element 6284507×1
Technic Panels
1 piece
Technic Panel Fairing 2 x 1 x 1WhitePart 89679Element 6434569×1
Tools
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Transportation - Land
1 piece
Wheel Arch, Mudguard, 1 1/2 x 6 x 1 [Arch Extended]WhitePart 62361Element 6476001 or 4523556×1
Minifigures
4 figures
Olly - White Top, Dark Orange LegsMinifigure, checked as a whole figure×1
RenéeMinifigure, checked as a whole figure×1
Aliya - White Top, Yellow SkirtMinifigure, checked as a whole figure×1
Zac - White/Red Shirt, Red PantsMinifigure, 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.