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.
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.
Tile 1 x 2 with GrooveRed ×1Trans-Red ×2Trans-Red is see-through: hold the piece up to a light.
Technic Beam 1 x 13 ThickBlack ×3Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Technic Beam 1 x 5 ThickBlack ×8Dark Bluish Gray ×3Black is darker than Dark Bluish Gray.
Technic Steering Arm 5.5 x 2 with Towball Socket Rounded, ChamferedDark Bluish GrayPart 57515Element 6074651 or 4523398×8
Yellow
24 pieces
Technic Axle Connector with Axle HoleYellowPart 32039Element 4107800 or 3203924×10
Technic Engine CrankshaftYellowPart 2853Element 6640378 or 4119474×2
Technic Engine Piston RoundYellowPart 2851Element 4112203 or 285124×8
Technic Shock Absorber 6.5L with Hard Spring, Tight Coil in Middle [Complete Assembly]YellowPart 76537Element 7653726 or 6027566×4
Tan
21 pieces
Technic Axle Connector Ridged [with x Hole x Orientation]TanPart 6538bElement 4207456 or 4140453×2
Technic Axle Pin without Friction Ridges LengthwiseTanPart 3749Element 4666579 or 4186017×5
Technic Gear 12 Tooth BevelTanPart 6589Element 4565452 or 45145561 spare in the box×3
Technic Pin Long without Friction RidgesTanPart 32556×11
Trans-Clear
6 pieces
Plate Round 1 x 1 with Solid StudTrans-ClearPart 6141Element 6514052 or 62400301 spare in the box×6
Dark Tan
5 pieces
Technic Axle 3 with StudDark TanPart 6587Element 6031821 or 6013821×5
Trans-Orange
4 pieces
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Trans-OrangePart 54200Element 6245265 or 42443691 spare in the box×2
Plate Round 1 x 1 with Solid StudTrans-OrangePart 6141Element 6514059 or 62402271 spare in the box×2
Trans-Red
4 pieces
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Trans-RedPart 54200Element 6245252 or 42443631 spare in the box×2
Tile 1 x 2 with GrooveTrans-RedPart 3069bElement 6514220 or 6251290Also in Red×2
White
1 piece
Technic Gear 24 Tooth Clutch with Dark Bluish Gray CenterWhitePart 76244Element 6198486 or 6036892×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 8070-1[No Color/Any Color]Part 93677Element 4611954×1
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.