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 Foot, Type 2Flat SilverPart 90661Element 4632585×2
Large Figure Hand, Fist with Axle Hole, 4 FingersFlat SilverPart 93575Element 4619077×2
Large Figure Head Connector Block (Toa Okoto)Flat SilverPart 19049Element 6102606×1
Large Figure Weapon Sword / ShieldFlat SilverPart 19992Element 6103038×2
Blue
4 pieces
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×3
Technic Pin Long with Friction Ridges Lengthwise, 2 Center SlotsBluePart 6558Element 4514553×1
Pearl Titanium
4 pieces
Large Figure Weapon Claw, Bent and Notched with ClipPearl TitaniumPart 20252Element 6106738×4
Trans-Neon Orange
4 pieces
Large Figure Limb Cover, Size 4, Armor with Ball Joint SocketTrans-Neon OrangePart 90640Element 6141859 or 6076486×4
Dark Tan
3 pieces
Technic Axle 5 with StopDark TanPart 15462Element 6055631×3
Light Bluish Gray
2 pieces
Technic BushLight Bluish GrayPart 3713Element 6275844 or 6271817×1
Technic Pin 1/2 without Friction RidgesLight Bluish GrayPart 4274Element 4274194 or 4211483×1
Trans-Red
2 pieces
Large Figure Weapon Accessory, Flame / Lightning Bolt with Axle Hole with Marbled Trans-Yellow PatternTrans-RedPart 11302pat0001Element 6016236×2
Trans-Light Blue
1 piece
Large Figure Head Connector Block Eye/Brain Stalk (Toa Okoto)Trans-Light BluePart 19050Element 6102638×1
Yellow
1 piece
Technic Knob WheelYellowPart 32072Element 6284189 or 4203493×1
Yellowish Green
1 piece
Large Figure Mask Skull SpiderYellowish GreenPart 20251Element 6106711×1
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.