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.
494 pieces in 168 part and color combinations, plus 3 minifigures.
The official piece count includes the 12 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.
Plate Special 1 x 2 with Handle on End [Closed Ends]Black ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges]LimePart 11153Element 6578745 or 6033782×2
Brick Round 2 x 2 Dome Top, Blocked Open Stud, Bottom Axle HolderLimePart 30367b×3
Plate 2 x 2LimePart 3022Element 4613977 or 4537937×2
Plate Round 1 x 1 with Solid StudLimePart 6141Element 41831331 spare in the box×6
Dark Tan
11 pieces
Plate 1 x 2Dark TanPart 3023Element 4528604 or 4497082×8
Plate 2 x 4Dark TanPart 3020Element 4497077 or 4267874×1
Technic Axle 3 with StudDark TanPart 6587Element 6031821 or 6013821×2
Trans-Red
9 pieces
Plate 1 x 2Trans-RedPart 3023Element 6514003 or 6240212×2
Plate Round 1 x 1 with Solid StudTrans-RedPart 6141Element 6514051 or 62084501 spare in the box×2
Tile Round 1 x 1Trans-RedPart 98138Element 6514189 or 62586072 spares in the box×5
Blue
8 pieces
Brick Special 2 x 2 with 2 Pins and Axle HoleBluePart 30000Element 3000023×6
Technic Pin Long with Friction Ridges Lengthwise, 2 Center SlotsBluePart 6558Element 4514553×2
Trans-Dark Pink
6 pieces
Plate Round 1 x 1 with Solid StudTrans-Dark PinkPart 6141Element 6514060 or 62402301 spare in the box×6
Tan
5 pieces
Brick Sloped 45° 2 x 1 with Bottom PinTanPart 3040bElement 4121972 or 4113989×2
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]TanPart 2654Element 4278422 or 4140561×3
Dark Red
4 pieces
Cone 1 x 1 [Top Groove]Dark RedPart 59900Element 4541498 or 4529238×2
Plate 1 x 4Dark RedPart 3710Element 4539061 or 4164219×2
Pearl Titanium
4 pieces
Large Figure Weapon Claw, with ClipPearl TitaniumPart 92220Element 4625376×4
Trans-Bright Green
4 pieces
Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki EyeTrans-Bright GreenPart 58176Element 6507869 or 6171864×4
Trans-Clear
4 pieces
Plate Round 1 x 1 with Solid StudTrans-ClearPart 6141Element 6514052 or 62400301 spare in the box×2
Windscreen 6 x 4 x 2 1/3 Bubble Canopy with HandleTrans-ClearPart 87752Element 6507954 or 6254267×1
Windscreen 8 x 6 x 2 1/3 Bubble Canopy with HandleTrans-ClearPart 98102Element 6244881 or 6179051×1
Trans-Light Blue
4 pieces
Panel 1 x 2 x 1 [Square Corners]Trans-Light BluePart 4865aElement 4618924 or 4239181×1
Shield Ovoid with Grip and Silver Mechanical PrintTrans-Light BluePart 92747pr0007Element 6028418×1
Tile Special 2 x 3 with 2 Clips [Thick Open O Clips]Trans-Light BluePart 30350bElement 4603191×1
Tool Saw with Handle and ToothTrans-Light BluePart 11601Element 6021974×1
Trans-Purple
3 pieces
Cone 1 x 1 [Top Groove]Trans-PurplePart 59900Element 6514023 or 6337603×1
Pod, Elongated, Half, Alien 2 x 4 x 4Trans-PurplePart 11598Element 6021966×2
Flat Silver
1 piece
Weapon Gun Ray / Sci Fi - Rounded Heat DiffusersFlat SilverPart 13608Element 6046398×1
Trans-Dark Blue
1 piece
Dish 2 x 2 Inverted [Radar]Trans-Dark BluePart 4740Element 6580383 or 6398233×1
Yellow
1 piece
Brick 2 x 4YellowPart 3001Element 300124×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 70704-1[No Color/Any Color]Part 13069Element 6023216×1
Minifigures
3 figures
Alien Buggoid, Olive GreenMinifigure, checked as a whole figure×1
Chuck StonebreakerMinifigure, checked as a whole figure×1
Robot, Bright GreenMinifigure, 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.