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.
773 pieces in 261 part and color combinations, plus 3 minifigures.
The official piece count includes the 12 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.
Plate 1 x 2Red ×1Trans-Red ×2Trans-Red is see-through: hold the piece up to a light.
Musical Instrument Guitar Acoustic with Black Neck and Silver Strings PrintMedium NougatPart 25975pr0001Element 6160320×1
Food Hot Dog / SausageRedPart 33078Element 6144805 or 45209521 spare in the box×2
Panels
6 pieces
Panel 1 x 4 x 1 with Rounded Corners [Thin Wall]Light Bluish GrayPart 15207Element 6071299×1
Panel 1 x 2 x 1 with Rounded Corners and Central DividerMedium AzurePart 93095Element 6671193 or 6133911×3
Panel 1 x 2 x 2 [Side Supports / Hollow Studs]Trans-ClearPart 87552Element 6514185 or 6253231×2
Animals / Creatures
4 pieces
Animal, Salamander with Black Eyes, Dark Orange Spots Print (Popcorn)Bright Light OrangePart 84307pr0002Element 6416784×1
Animal, Squirrel with Brown Eyes, Winking PrintDark OrangePart 11568pr0011Element 6416486×1
Animal, Rabbit / Bunny Sitting with Medium Nougat Eyes, White Nose Print (Melody)Sand BluePart 34050pr0001Element 6416680×1
Animal, Cat, Chubby with Orange Spots, Olive Green Eyes, Grumpy Print (Churro)WhitePart 2652pr0001Element 6435013 or 6428858×1
Pneumatics
4 pieces
Pneumatic T-Piece (T Bar) [New Style]BlackPart 4697bElement 61042091 spare in the box×4
Technic Connectors
4 pieces
Technic Pin Connector Round [Slotted]Reddish BrownPart 62462Element 6173132 or 6055781×4
Bricks Wedged
3 pieces
Brick Wedged, Curved Triple 4 x 6 x 2/3 with 4 StudsOrangePart 52031Element 6224785 or 4505118×3
Technic Bricks
2 pieces
Technic Brick 1 x 1 with Pin HoleBright Light YellowPart 6541Element 6316263×1
Technic Brick 1 x 1 with Pin HoleReddish BrownPart 6541Element 4620075 or 4528461×1
Minifig Heads
1 piece
Minifig Head [Plain] [Vented Stud - 2 Holes]Trans-YellowPart 28621Element 6513997 or 6300208×1
Stickers
1 piece
Sticker Sheet for Set 41735-1[No Color/Any Color]Part 10101081Element 6416437×1
Tools
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Windscreens and Fuselage
1 piece
Windscreen 2 x 6 x 2, Thin TopTrans-ClearPart 35336Element 6510175 or 6245195×1
Minifigures
3 figures
Paisley - Dark Pink Top, Light Aqua LegsMinifigure, checked as a whole figure×1
Liann - White Top, Bright Light Orange SkirtMinifigure, checked as a whole figure×1
Leo - Colored Top, Coral 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.