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.
Technic Axle 5Light Bluish GrayPart 32073Element 32073194 or 4211639×5
Technic Axle 2 NotchedRedPart 32062Element 41428651 spare in the box×3
Energy Effects
4 pieces
Large Figure Weapon Lightning, Triple with Marbled Trans-Neon Green Bolt PatternFlat SilverPart 87812pat0002Element 4615375 or 4579020×2
Large Figure Weapon Lightning, with Marbled Blue and Yellow PatternPearl TitaniumPart 98588pat0002Element 6012440×2
Technic Bushes
4 pieces
Technic BushLight Bluish GrayPart 3713Element 6275844 or 62718171 spare in the box×4
Technic Gears
4 pieces
Technic Knob WheelBlackPart 32072Element 6284188 or 4248204×4
Transportation - Sea and Air
4 pieces
Jet Engine Fan with 10 Blades and Technic PinDark Bluish GrayPart 46667Element 6313484 or 6100596×2
Propeller 1 Blade 2 x 16 with AxlePearl GoldPart 98135Element 6270129 or 6248488×2
Wheels and Tyres
4 pieces
Tyre 94.2 x 22 Motorcycle Racing Tread, NarrowBlackPart 88516Element 6609953 or 6261718×2
Wheel 75 x 17 MotorcycleDark PurplePart 88517Element 4667034×2
Technic Beams Special
2 pieces
Technic Beam 1 x 3 with Ball Joint in MiddleDark Bluish GrayPart 98577Element 6001085×2
Technic Special
2 pieces
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]Trans-Neon GreenPart 41669Element 4163577×2
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.