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.
985 pieces in 227 part and color combinations, plus 5 minifigures.
The piece count includes the 27 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.
Brick Round 4 x 4 Centre HoleBlack ×1Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 1 x 10Black ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)Black ×2Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Technic BushRedPart 3713Element 6271820 or 42271552 spares in the box×8
Dark Tan
16 pieces
Plate 2 x 6Dark TanPart 3795Element 4550329×4
Plate Special 2 x 2 with Groove and Center Stud (Jumper)Dark TanPart 87580Element 6126075 or 4578032×7
Technic Axle 3 with StudDark TanPart 6587Element 6031821 or 6013821×5
Trans-Yellow
10 pieces
Cone 1 x 1 [Top Groove]Trans-YellowPart 59900Element 6514022 or 6337597×6
Tile Round 1 x 1Trans-YellowPart 98138Element 6514193 or 62747401 spare in the box×4
Trans-Neon Green
9 pieces
Antenna 1 x 4 with Rounded TopTrans-Neon GreenPart 3957a1 spare in the box×2
Headwear Accessory Plume / Feathers with PinTrans-Neon GreenPart 30126Element 60364301 spare in the box×1
Plate Round 1 x 1 with Solid StudTrans-Neon GreenPart 6141Element 6240223 or 30057491 spare in the box×5
Rock 1 x 1 Crystal 5 PointTrans-Neon GreenPart 30385Element 6170290 or 4540417×1
Trans-Clear
8 pieces
Flexible Ribbed Hose 8mm Ends 19L with Lime Green Centre PatternTrans-ClearPart 57539pat0002Element 6059315 or 4583980×2
Panel 1 x 6 x 5Trans-ClearPart 59349Element 6514106 or 6245253×1
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]Trans-ClearPart 2654Element 6581772 or 6163901×3
Windscreen 12 x 6 x 6 Curved without Pin HolesTrans-ClearPart 94531Element 6035991 or 4617723×1
Windscreen 8 x 6 x 2 1/3 Bubble Canopy with HandleTrans-ClearPart 98102Element 6244881 or 6179051×1
Yellow
8 pieces
Hinge Plate 1 x 2 Locking with 1 Finger On TopYellowPart 30383Element 6131898 or 6036874×4
Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 TeethYellowPart 44302aElement 4183981×4
Trans-Dark Pink
7 pieces
Dish 2 x 2 Inverted [Radar]Trans-Dark PinkPart 4740Element 6580376 or 6245302×4
Plate Round 1 x 1 with Solid StudTrans-Dark PinkPart 6141Element 6514060 or 62402301 spare in the box×1
Pod, Round, Half, Alien 2 x 4 x 2Trans-Dark PinkPart 13754Element 6035112×2
Trans-Neon Orange
3 pieces
Dish 2 x 2 Inverted [Radar]Trans-Neon OrangePart 4740Element 6245295 or 3006347×3
Trans-Purple
2 pieces
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
Olive Green
1 piece
Creature, Insectoid with Dark Red Eyes PrintOlive GreenPart 13757pr0001Element 6039127×1
Orange
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Trans-Green
1 piece
Plate Round 1 x 1 with Solid StudTrans-GreenPart 6141Element 6514057 or 62402211 spare in the box×1
Trans-Light Blue
1 piece
Tile Special 2 x 3 with 2 Clips [Thick U Clips]Trans-Light BluePart 30350c×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 70709-1[No Color/Any Color]Part 14279Element 6037989×1
Minifigures
5 figures
Mosquitoid with WingsMinifigure, checked as a whole figure×1
Solomon BlazeMinifigure, checked as a whole figure×1
Max SolarflareMinifigure, checked as a whole figure×1
Robot, Dark Azure with Neck BracketMinifigure, checked as a whole figure×1
MantizoidMinifigure, 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.