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 Axle Connector with Axle Hole [Reinforced]Black ×11Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Technic Beam 1 x 11 Thick with Alternating HolesBlack ×4Dark Bluish Gray ×7Black is darker than Dark Bluish Gray.
Technic Pin Connector Hub with 1 AxleBlack ×9Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Cable, Fiber Optics, Wide 9L / 7.2cmTrans-ClearPart 40002c09Element 65693661 spare in the box×2
Tubes and Hoses
5 pieces
Axle Hose, Soft 11LBlackPart 32199Element 4234438 or 4121646×2
Hose, Ribbed 7mm D. 12L / 9.6cmBlackPart 78c12Element 6506605 or 6253280×2
Axle Hose, Soft 16LLight Bluish GrayPart 32202Element 6461852 or 4260470×1
Flags, Banners and Signs
3 pieces
Road Sign Clip-on 2.2 x 2.667 Triangular with Open O ClipBlackPart 65676Element 6491608×1
Road Sign Clip-on 2.2 x 2.667 Triangular with Open O ClipLight Bluish GrayPart 65676Element 6317545×2
Technic Beams Special
3 pieces
Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes]BlackPart 14720Element 6390379×2
Technic Beam Frame 7 x 11WhitePart 39794Element 6247435×1
Technic Special
3 pieces
Technic Plate 1 x 5 with Smooth Ends, 4 Studs and Centre Axle HoleBlackPart 32124Element 6280168 or 4114689×1
Technic Tooth 1 x 3 with Axle Hole [Hollow Underside]BlackPart 48267Element 6288220×2
Stickers
2 pieces
Sticker Sheet 1 for Set 42214-1[No Color/Any Color]Part 10110658Element 6522710×1
Sticker Sheet 2 for Set 42214-1[No Color/Any Color]Part 10114880Element 6576018×1
Technic Gears
2 pieces
Technic Gear Rack 1 x 7 with Axle and Pin HolesBlackPart 87761Element 6327430 or 4562009×1
Technic Gear 12 Tooth with Axle HoleBluePart 69778Element 6396479×1
Tiles
2 pieces
Tile 1 x 6 with GrooveBlackPart 6636Element 663626×2
Tiles Round and Curved
2 pieces
Tile Round 1 x 1Trans-RedPart 98138Element 6514189 or 62586071 spare in the box×2
Tiles Special
2 pieces
Tile Special 2 x 3 PentagonalBlackPart 22385Element 6245251 or 6128992×2
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.