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.
Large Figure Limb Cover, Size 4, Armor with Ball Joint SocketPearl TitaniumPart 90640Element 6061054 or 6013698×3
Large Figure Weapon, Zamor Sphere Launcher, Top with Barrel and SightPearl TitaniumPart 98563Element 4652055×1
Flat Silver
6 pieces
Large Figure Limb Cover, Size 5, Armor with Ball Joint Socket with Red Arrows, Blue Markings, and Hero Factory Logo PrintFlat SilverPart 90639pr0032Element 6074995×2
Large Figure WingFlat SilverPart 60935Element 6040261 or 4609603×2
Technic Pin Connector Round [Slotted]Flat SilverPart 62462Element 6245499 or 6054858×2
Large Figure Weapon, Barrel with 2 Pin Holes and 3 Axle HolesTrans-Light BluePart 98585Element 6503210 or 6248915×1
Windscreen 4 x 4 x 4 2/3 with HandleTrans-Light BluePart 11289Element 6280333 or 6019162×2
Trans-Red
3 pieces
Large Figure Creature Cocoon Petal with Black Base PatternTrans-RedPart 15358pat0001Element 6100514 or 6071210×3
Orange
2 pieces
Large Figure Cockpit Seat with Ball JointOrangePart 15353Element 6058113×2
Dark Brown
1 piece
Technic Axle and Pin Connector Angled Triple [120° Offset]Dark BrownPart 10288Element 6273219 or 6005755×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 44028-1[No Color/Any Color]Part 17787Element 6076016×1
Minifigures
4 figures
Surge in Pearl Dark Gray ArmorMinifigure, checked as a whole figure×1
Rocka in Flat Silver ArmorMinifigure, checked as a whole figure×1
Hero Factory Jumper, Black Top, Lime BaseMinifigure, checked as a whole figure×1
Hero Factory Jumper, Black Top, Orange BaseMinifigure, 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.