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.
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.
Cone 1 x 1 [Top Groove]Red ×4Trans-Red ×8Trans-Red is see-through: hold the piece up to a light.
Brick Special 1 x 1 with Stud on 1 SideBright Light YellowPart 87087Element 6420726×6
Brick Special 1 x 2 with 2 Studs on 1 SideBright Light YellowPart 11211Element 6117317×2
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 SideBright Light YellowPart 22885Element 6316264×2
Plate 1 x 2Bright Light YellowPart 3023Element 6554796 or 6201647×12
Plate 1 x 4Bright Light YellowPart 3710Element 6554799 or 6248756×2
Plate 2 x 4Bright Light YellowPart 3020Element 6554802 or 6296524×6
Plate Round 1 x 1 with Solid StudBright Light YellowPart 6141Element 63199581 spare in the box×4
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)Bright Light YellowPart 15573Element 6554795 or 6195266×2
Tile 1 x 2 with GrooveBright Light YellowPart 3069bElement 6554794 or 6061201×2
Tile Round 1 x 1Bright Light YellowPart 98138Element 63438061 spare in the box×4
Tile Round 1 x 1 QuarterBright Light YellowPart 25269Element 6554798 or 62289691 spare in the box×4
Dark Azure
8 pieces
Brick Special 1 x 1 with HeadlightDark AzurePart 4070Element 6345712×2
Brick Special 1 x 1 with Stud on 1 SideDark AzurePart 87087Element 6004938×2
Cone 1 x 1 [Top Groove]Dark AzurePart 59900Element 6404754×2
Cone 2 x 2 x 2, Open StudDark AzurePart 3942cElement 6226526×2
Trans-Red
8 pieces
Cone 1 x 1 [Top Groove]Trans-RedPart 59900Element 6514021 or 6337596Also in Red×8
Light Bluish Gray
4 pieces
Bar 6L with Stop RingLight Bluish GrayPart 63965Element 6170418 or 6081975×2
Plate Special 2 x 2 with Wheel Holders with Cross (+) Slots on PinsLight Bluish GrayPart 67687Element 6408022×2
Opal Trans-Clear
4 pieces
Brick 2 x 4 without Cross Supports [Modern]Opal Trans-ClearPart 3556Element 6508093 or 6439088×4
Pearl Gold
2 pieces
Cone 1 x 1 [Top Groove]Pearl GoldPart 59900Element 4529247×2
Dark Turquoise
1 piece
Brick and Axle Separator v2.0Dark TurquoisePart 96874Element 6254100×1
Trans-Dark Blue
1 piece
Rock 1 x 1 Crystal 5 PointTrans-Dark BluePart 30385Element 6507864 or 6236962×1
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.