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.
221 pieces in 78 part and color combinations, plus 2 minifigures.
The piece count includes the 8 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.
Before you call it missing
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
Look-alike colors in this set
These parts appear in this set in two colors that are easy to confuse. If you are one short in one color,
check whether it went in where the other color belongs. Each color has its own element ID in the parts list
at the back of the instructions.
Windscreen 8 x 4 x 2 Curved Taper with Locking Dual 2 FingersBlack ×1Trans-Brown ×1Trans-Brown is see-through: hold the piece up to a light.
Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Ball Half [Vertical Side]Light Bluish GrayPart 48171Element 4227525×2
Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint SocketLight Bluish GrayPart 48169Element 4227396×2
Technic Pin 1/2 without Friction RidgesLight Bluish GrayPart 4274Element 4274194 or 42114831 spare in the box×4
Trans-Medium Blue
8 pieces
Plate Round 1 x 1 with Solid StudTrans-Medium BluePart 6141Element 6240213 or 61522791 spare in the box×4
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]Trans-Medium BluePart 2654Element 6001231 or 4278407×2
Windscreen 9 x 3 x 1 2/3 Bubble CanopyTrans-Medium BluePart 47844Element 4260522×2
Blue
6 pieces
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×4
Technic Pin 1/2 without Friction RidgesBluePart 4274Element 41430051 spare in the box×2
Sand Blue
6 pieces
Arm Mechanical with 2 Clips [Battle Droid]Sand BluePart 30377Element 4260982×3
Bar 4L (Lightsaber Blade / Wand)Sand BluePart 30374Element 4261589×1
Plate Special 1 x 2 Side Handle [Free Ends]Sand BluePart 2540Element 4171688×2
White
5 pieces
Minifig Head (No Face), Alpha Team Arctic Red, Blue, Yellow Ogel Orb Print [Blocked Open Stud]WhitePart 3626bpr0094Element 4225962×2
Rubber Belt Small [15mm ID] [Round Cross Section]WhitePart 85543Element 6699001 or 4580665×1
Sports Ski with HingeWhitePart 6120Element 4222968×2
Dark Blue
4 pieces
Plate 2 x 8Dark BluePart 3034Element 6027627 or 4530027×2
Wedge Plate 8 x 3, 22° LeftDark BluePart 50305Element 6249596 or 4651377×1
Wedge Plate 8 x 3, 22° RightDark BluePart 50304Element 6115221 or 4651373×1
Tan
4 pieces
Plate 1 x 2TanPart 3023Element 4113917 or 302305×4
Trans-Orange
4 pieces
Antenna 1 x 4 with Rounded TopTrans-OrangePart 3957aElement 4221167×2
Tile Special 1 x 2 Grille with Bottom GrooveTrans-OrangePart 2412bElement 30244182 or 6097654×2
Trans-Clear
2 pieces
Equipment Crystal Ball Globe 2 x 2 x 2Trans-ClearPart 30106Element 6507889 or 6274736×2
Trans-Brown
1 piece
Windscreen 8 x 4 x 2 Curved Taper with Locking Dual 2 FingersTrans-BrownPart 30536Element 4215614 or 4143049Also in Black×1
Minifigures
2 figures
Flex (Alpha Team)Minifigure, checked as a whole figure×1
Ogel Minion / Super Ice DroneMinifigure, 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.