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.
LEGO's request form asks for the set number (8978) and each piece's element ID, both listed above.
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Clear every mark for this set?
Piece checklist
Large Buildable Figures
22 pieces
Large Figure Chest Cover (Toa Metru)BlackPart 49423Element 4540599 or 4223455×1
Large Figure Foot, Claws, Toa InikaBlackPart 53542Element 4280266×2
Large Figure Mask SkrallBlackPart 64253Element 4541817×1
Large Figure Shoulder Cover, Armour, VoroxBlackPart 64272Element 4542509×3
Large Figure Skeletal, Limb, with 2 Ball Joints (Toa Metru)BlackPart 47297Element 4290015 or 4278481×4
Large Figure Skeletal, Torso with Beam, 2 Ball Joints, and 7 Tooth Half GearBlackPart 47306Element 4278585 or 4218521×1
Large Figure Skeletal, Torso, Upper, with 2 Ball Joints (Toa Inika)BlackPart 53545Element 4292590×1
Large Figure Weapon Claw Blade, SmallBlackPart 57528Element 4542386×1
Large Figure Weapon Saw Blade Shield with Red Geometric PrintBlackPart 64271pr0001Element 4543333×1
Large Figure Wing, Angled with Hose and Red Center (Skrall)BlackPart 64263pat0003Element 4541600×3
Large Figure Weapon Spiked Ball, Thornax Fruit with Black BandPearl GoldPart 64277c01Element 4546585×1
Large Figure Hand, Fist with Axle Hole, 3 FingersRedPart 64251Element 4541816×2
Large Figure Head Connector Block (Glatorian)Trans-Neon OrangePart 64262Element 4543426 or 4540702×1
Technic Pins
12 pieces
Technic Pin with Friction Ridges Lengthwise and Center SlotsBlackPart 2780Element 4121715 or 2780261 spare in the box×9
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×2
Technic Axle Pin without Friction Ridges LengthwiseTanPart 3749Element 4666579 or 4186017×1
Technic Connectors
9 pieces
Technic Pin Connector Hub Perpendicular 3 x 3 Bent with 4 Pins (Pin Ridges Across Part)Light Bluish GrayPart 55615Element 4296059×1
Technic Axle Connector 2 x 3 with Ball Socket, Closed Sides, Squared EndsRedPart 60176Element 4509902×3
Technic Axle and Pin Connector 2 x 7 with Two Ball Joint Sockets [Squared Ends]RedPart 61054Element 4539216×4
Technic Axle and Pin Connector Angled #2 - 180°RedPart 32034Element 6351572 or 4234429×1
Launcher, Large Figure Weapon, Zamor Sphere Launcher, with Hole and Axle HolePearl Light GrayPart 64275Element 4546416×2
Technic Beams Special
1 piece
Technic Beam 1 x 2 with Ball Joint Straight, Smooth BallBlackPart 64276Element 4560108 or 4537514×1
Technic Gears
1 piece
Technic Tread Sprocket Wheel Small with Glatorian Game PrintPearl Light GrayPart 57520pr0001Element 4646781 or 4544529×1
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.