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.
303 pieces in 95 part and color combinations, plus 2 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.
Wedge Plate 10 x 10 with 4x4 Cutout and Cut CornerBlackPart 2401Element 240126×2
Wedge Plate 3 x 6 Cut CornersBlackPart 2419Element 241926×3
Wedge Plate 4 x 4 Wing LeftBlackPart 3936Element 4280156 or 4189084×1
Wedge Plate 4 x 4 Wing RightBlackPart 3935Element 4280157 or 4189086×1
Wheel Arch, Mudguard 2 x 4 [Smooth]BlackPart 3787×2
Yellow
38 pieces
Brick Special 1 x 1 with HeadlightYellowPart 4070Element 407024×2
Cone 4 x 4 x 2, Axle Hole [Plain]YellowPart 3943bElement 4513997 or 394324×2
Flexible Hose 8.5L with Tabless Ends Black (Ends different color than Tube)YellowPart 73590c01b×2
Plate 1 x 2YellowPart 3023Element 302324×2
Plate 1 x 6YellowPart 3666Element 366624×1
Plate 1 x 8YellowPart 3460Element 346024×4
Plate 2 x 2YellowPart 3022Element 4613978 or 302224×1
Plate 2 x 2 CornerYellowPart 2420Element 242074 or 242024×2
Plate 2 x 4YellowPart 3020Element 302024×3
Plate Round 1 x 1 with Solid StudYellowPart 6141Element 614124×4
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)YellowPart 4032aElement 403224×4
Plate Special 1 x 2 with 1 Stud without Groove (Jumper)YellowPart 3794a×2
Plate Special 1 x 2 with Long Stud Receptacle (Space Wing)YellowPart 4596×2
Tile 2 x 2 with Grill Black PrintYellowPart 3068bpr0031×2
Tile Special 1 x 2 Grille without Bottom GrooveYellowPart 2412a×1
Wheel 8 x 6YellowPart 4624Element 6133542 or 462424×4
Trans-Red
18 pieces
Antenna 1 x 4 with Rounded TopTrans-RedPart 3957aElement 6065498 or 4106520×2
Brick Round 1 x 1 Open StudTrans-RedPart 3062bElement 6514235 or 6238673×2
Plate 1 x 1Trans-RedPart 3024Element 6513963 or 6252042×6
Plate Round 1 x 1 with Solid StudTrans-RedPart 6141Element 6514051 or 6208450×8
Trans-Yellow
1 piece
Windscreen 6 x 4 x 2 CanopyTrans-YellowPart 4474Element 4189078 or 3006644×1
Minifigures
2 figures
Blacktron I (3626a Head)Minifigure, checked as a whole figure×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.