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 Connector 2 x 3 with Ball Socket, Closed Sides, Squared EndsBlackPart 60176Element 4519244×8
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin HoleBlackPart 32184Element 6276951 or 4121667×2
Technic Axle and Pin Connector Angled #1Light Bluish GrayPart 32013Element 6296859 or 4211550×1
Technic Axle and Pin Connector PerpendicularLight Bluish GrayPart 6536Element 6261375 or 4211775×1
Technic Pins
10 pieces
Technic Pin with Friction Ridges Lengthwise and Center SlotsBlackPart 2780Element 4121715 or 2780261 spare in the box×1
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×5
Technic Pin 1/2 without Friction RidgesBluePart 4274Element 41430051 spare in the box×3
Technic Pin Long with Friction Ridges Lengthwise, 2 Center SlotsBluePart 6558Element 4514553×1
Projectiles / Launchers
6 pieces
Launcher, Large Figure Weapon, Zamor Sphere Launcher, with Hole and Axle HoleBlackPart 64275Element 4581740×4
Projectile, Large Figure Weapon, Zamor Sphere / BallBluePart 54821Element 4570137×2
Technic Special
6 pieces
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]BluePart 41669Element 4185662×2
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]Flat SilverPart 41669Element 4612765×1
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]Trans-Neon OrangePart 41669Element 6111281 or 4163574×3
Technic Beams
3 pieces
Technic Beam 1 x 2 Thick with Pin Hole and Axle HoleBlackPart 60483Element 6265091 or 6006140×3
Tubes and Hoses
3 pieces
Flexible Ribbed Hose 8mm Ends 19LOrangePart 57539Element 4561469 or 4508092×3
Technic Beams Special
2 pieces
Technic Beam 1 x 2 with Ball Joint Straight, Smooth BallBlackPart 64276Element 4560108 or 4537514×1
Technic Beam 3 x 0.5 Liftarm with Boss and Pin / CrankLight Bluish GrayPart 33299aElement 4211688×1
Technic Bushes
1 piece
Technic BushLight Bluish GrayPart 3713Element 6275844 or 62718171 spare in the box×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.