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.
Technic Beam 1 x 11.5 Double Bent ThickBlack ×8Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Technic Beam 1 x 13 ThickBlack ×2Dark Bluish Gray ×9Black is darker than Dark Bluish Gray.
Technic Beam 1 x 15 ThickBlack ×10Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Technic Beam 1 x 5 ThickBlack ×4Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Technic Beam 1 x 7 ThickBlack ×4Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Technic Beam 1 x 9 ThickBlack ×11Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
2 more look-alike pairs
Technic Beam 2 x 4 L-Shape ThickBlack ×2Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Technic Beam 3 x 5 L-Shape ThickBlack ×10Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Technic Axle Connector with Axle HoleRedPart 32039Element 4118897×1
Technic Changeover Catch - + openingRedPart 6641Element 6099696 or 4270473×1
Technic Driving Ring 2L, 4 RidgesRedPart 6539Element 4278957×1
Tan
22 pieces
Technic Axle Connector Ridged [with x Hole x Orientation]TanPart 6538bElement 4207456 or 4140453×1
Technic Axle Pin without Friction Ridges LengthwiseTanPart 3749Element 4666579 or 4186017×3
Technic Gear 12 Tooth BevelTanPart 6589Element 4565452 or 4514556×3
Technic Gear 20 Tooth Double Bevel with Axle Hole Type 2 [X Opening]TanPart 32269Element 4514555×5
Technic Pin Long without Friction RidgesTanPart 32556×10
Yellow
18 pieces
Technic Engine Piston RoundYellowPart 2851Element 4112203 or 285124×8
Technic Knob WheelYellowPart 32072Element 6284189 or 4203493×6
Technic Shock Absorber 6.5L with Hard Spring, Tight Coil in Middle [Complete Assembly]YellowPart 76537Element 7653726 or 6027566×4
Trans-Clear
8 pieces
Plate Round 1 x 1 with Solid StudTrans-ClearPart 6141Element 6514052 or 62400301 spare in the box×4
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]Trans-ClearPart 2654Element 6581772 or 6163901×2
Technic Shock Absorber 10L, Damped, Normal SpringTrans-ClearPart 76320c01Element 4142095×2
White
6 pieces
Technic Beam 1 x 11.5 Double Bent ThickWhitePart 32009Element 6271161 or 6004157×4
Technic Gear 24 Tooth Clutch with Dark Bluish Gray CenterWhitePart 76244Element 6198486 or 6036892×1
Tile 1 x 4 with GrooveWhitePart 2431Element 6548255 or 243101×1
Orange
4 pieces
Technic Beam 1 x 9 Bent (6 - 4) ThickOrangePart 6629Element 6360128 or 6097284×4
Trans-Orange
4 pieces
Plate Round 1 x 1 with Solid StudTrans-OrangePart 6141Element 6514059 or 62402271 spare in the box×4
Trans-Red
4 pieces
Plate Round 1 x 1 with Solid StudTrans-RedPart 6141Element 6514051 or 62084501 spare in the box×2
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]Trans-RedPart 41669Element 4163567×2
[No Color/Any Color]
1 piece
Sticker Sheet for Set 8297-1[No Color/Any Color]Part 63280Element 4528466×1
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.