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.
LEGO counts 187 pieces. This inventory comes from a separate parts catalog and lists 188; the two do not always count the same elements, so their totals differ. 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.
Brick Curved Inverted 6 x 1Light GrayPart 42023Element 4160404×4
Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom PinLight GrayPart 3747aElement 4109695×4
Brick Sloped Inverted 34° 3 x 1 without Internal StopperLight GrayPart 4287aElement 428702×2
Brick Wedged, Curved Inverted 6 x 2 LeftLight GrayPart 41765Element 4214085 or 4161276×3
Brick Wedged, Curved Inverted 6 x 2 RightLight GrayPart 41764Element 4214084 or 4161261×3
Brick Wedged, Curved Inverted 8 x 6 x 2 CockpitLight GrayPart 42021Element 4161247×1
Plate 2 x 10Light GrayPart 3832Element 383202×1
Plate 2 x 2 CornerLight GrayPart 2420Element 242052 or 242002×2
Plate 4 x 8Light GrayPart 3035Element 303502×1
Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs]Light GrayPart 2444Element 244402×2
Turntable 2 x 2 Plate - TopLight GrayPart 3679Element 367952 or 367902×1
Wedge Plate 4 x 2 LeftLight GrayPart 41770Element 4161327×1
Wedge Plate 4 x 2 RightLight GrayPart 41769Element 4160864×1
Chrome Silver
12 pieces
Brick Wedged, Curved 12 x 3 LeftChrome SilverPart 42061Element 4182628×1
Brick Wedged, Curved 12 x 3 RightChrome SilverPart 42060Element 4182629×1
Cone 2 x 2 x 2, Open StudChrome SilverPart 3942cElement 4143535×2
Cone 3 x 3 x 2Chrome SilverPart 6233Element 4182632×2
Technic Cylinder 4 x 4 with Pin Holes and Centre Bar, Closed Sides on BarChrome SilverPart 41531Element 4182639×2
Wedge Plate 8 x 4 Wing LeftChrome SilverPart 3933Element 4182630×1
Wedge Plate 8 x 4 Wing Right with Stud NotchChrome SilverPart 3934Element 4182631×1
Wheel 20 x 30 TechnicChrome SilverPart 4266Element 4182633×2
Trans-Light Blue
2 pieces
Technic Wedge Belt Wheel [aka Pulley]Trans-Light BluePart 4185Element 6514360 or 6321351×2
Blue
1 piece
Brick Special 2 x 2 with Pin and Axle HoleBluePart 6232Element 4185578 or 4105150×1
White
1 piece
Brick Round 2 x 2 Dome Top, Blocked Open Stud, No Bottom Axle Holder with Silver and Blue Print (R2-D2)WhitePart 30367apr0001×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 10026-1[No Color/Any Color]Part 44942Element 4184185×1
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.