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.
3,712 pieces in 483 part and color combinations, plus 11 minifigures.
The official piece count includes the 44 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 12Black ×6Dark Blue ×7Black is yellower and darker than Dark Blue.
Plate 1 x 2Black ×8Dark Blue ×55Black is yellower and darker than Dark Blue.
Plate 1 x 8Black ×3Dark Blue ×36Black is yellower and darker than Dark Blue.
Plate 2 x 4Black ×16Dark Blue ×33Black is yellower and darker than Dark Blue.
Tile 2 x 3Black ×1Dark Blue ×29Black is yellower and darker than Dark Blue.
Tile Special 1 x 2 Grille with Bottom GrooveBlack ×2Dark Blue ×32Black is yellower and darker than Dark Blue.
3 more look-alike pairs
Plate 1 x 8Black ×3Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Plate 2 x 4Black ×16Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Technic Pin Connector Round 1L [Beam]Black ×2Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Technic Brick 1 x 4 [3 Pin Holes]YellowPart 3701Element 370124×4
Blue
18 pieces
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×6
Technic Brick 1 x 6 [5 Pin Holes]BluePart 3894Element 389423×2
Technic Pin Long with Friction Ridges Lengthwise, 1 Center SlotBluePart 42924Element 6299413×10
Lime
12 pieces
Brick Round 2 x 2 Dome Bottom [Open Stud]LimePart 15395Element 6214557 or 6104128×1
Brick Round 2 x 2 Dome Top, Hollow StudLimePart 30367cElement 4279734×1
Plate Round 1 x 1 with Solid StudLimePart 6141Element 41831331 spare in the box×10
Trans-Light Blue
8 pieces
Plate Round 1 x 1 with Solid StudTrans-Light BluePart 6141Element 6514058 or 62402251 spare in the box×8
Trans-Orange
8 pieces
Plate Round 1 x 1 with Solid StudTrans-OrangePart 6141Element 6514059 or 62402271 spare in the box×8
Trans-Clear
5 pieces
Tile Round 1 x 1Trans-ClearPart 98138Element 6514191 or 62747381 spare in the box×1
Wheel Bicycle, Fixed Black TireTrans-ClearPart 92851Element 6503209 or 6163986×1
Wheel Wheelchair with Fixed Black Hard Rubber Tire, with Clip HoleTrans-ClearPart 24314c01Element 6503208 or 6342135×2
Windscreen 2 x 4 x 2 VerticalTrans-ClearPart 4594Element 6507908 or 6240532×1
Medium Nougat
4 pieces
Food PretzelMedium NougatPart 10170Element 6359941 or 6192835×4
Bright Light Blue
3 pieces
Plant, Flower, Plate Round 1 x 1 with 5 PetalsBright Light BluePart 24866Element 62096831 spare in the box×3
Trans-Dark Blue
2 pieces
Balloon DogTrans-Dark BluePart 35692Element 6660799 or 6326484×2
Dark Orange
1 piece
Animal, Squirrel, Standing, Black Eyes and Reddish Brown Nose PrintDark OrangePart 80679pr0001Element 6384077×1
Orange
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Sand Green
1 piece
Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls]Sand GreenPart 42195Element 6348251×1
Trans-Yellow
1 piece
Plate 1 x 2Trans-YellowPart 3023Element 6514002 or 6240211×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 10303-1[No Color/Any Color]Part 10084111Element 6373899×1
Minifigures
11 figures
Dark Red Torso, Blue Legs, Black HairMinifigure, checked as a whole figure×1
Bright Light Blue Torso, White Legs, Dark Azure HairMinifigure, checked as a whole figure×1
White Torso, Dark Purple Legs, Dark Pink CapMinifigure, checked as a whole figure×1
Kid - Blue Torso, Medium Blue Legs, Tan HairMinifigure, checked as a whole figure×1
Medium Nougat Torso, Sand Green Legs, Dark Brown HairMinifigure, checked as a whole figure×1
Bright Light Blue Torso and Legs, Red HairMinifigure, checked as a whole figure×1
LEGO Employee, Yellow Torso, Blue Legs, Reddish BrownMinifigure, checked as a whole figure×1
Chef, White Torso, Dark Tan Legs, Red CapMinifigure, checked as a whole figure×1
Dark Green Torso, Dark Blue Legs, Medium Nougat HairMinifigure, checked as a whole figure×1
Bright Pink Torso, Tan Legs, Dark Bluish Grey HairMinifigure, checked as a whole figure×1
White/Dark Turquoise Torso, Light Bluish Grey Legs, Red Cap with Reddish Brown HairMinifigure, 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.