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.
872 pieces in 203 part and color combinations, plus 4 minifigures.
LEGO counts 882 pieces. This inventory comes from a separate parts catalog and lists 887, including the 15 parts inside the minifigures; 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.
Bracket 1 x 2 - 1 x 4 [Square Corners]BluePart 2436Element 4282744 or 4189120×2
Brick Special 1 x 1 with HeadlightBluePart 4070Element 407023×5
Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs]BluePart 2444Element 4529003 or 244423×2
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×23
Technic Beam 1 x 2 ThinBluePart 41677Element 6360123 or 4186834×4
Technic Beam 3 x 5 L-Shape ThickBluePart 32526Element 4158923×6
Technic Pin 1/2 without Friction RidgesBluePart 4274Element 41430051 spare in the box×6
Technic Pin Long with Friction Ridges Lengthwise, 2 Center SlotsBluePart 6558Element 4514553×19
Reddish Brown
9 pieces
Plate Special 1 x 2 with 1 Stud without Groove (Jumper)Reddish BrownPart 3794a×7
Seat / Chair 2 x 2Reddish BrownPart 4079Element 4211206×2
Red
8 pieces
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]RedPart 32054Element 4140806 or 4125198×8
Dark Orange
7 pieces
Plate 2 x 4Dark OrangePart 3020Element 4535928 or 4164449×6
Plate 4 x 8Dark OrangePart 3035Element 4535916×1
Trans-Red
7 pieces
Plate Round 1 x 1 with Solid StudTrans-RedPart 6141Element 6514051 or 62084501 spare in the box×7
Trans-Neon Green
6 pieces
Bar 4L (Lightsaber Blade / Wand)Trans-Neon GreenPart 30374Element 6507881 or 6170186×1
Dish 2 x 2 Inverted [Radar]Trans-Neon GreenPart 4740Element 6245297 or 4112517×4
Dish 6 x 6 Inverted (Radar) with Hollow StudsTrans-Neon GreenPart 44375a×1
Tan
4 pieces
Technic Axle Pin without Friction Ridges LengthwiseTanPart 3749Element 4666579 or 4186017×4
Yellow
4 pieces
Technic Bush 1/2 Smooth with Axle Hole Semi-ReducedYellowPart 32123bElement 6271167 or 32123241 spare in the box×4
White
3 pieces
Bar 1 x 6 [Closed Studs]WhitePart 6140Element 4288961 or 4279386×1
Cupboard 2 x 3 x 2 DoorWhitePart 4533Element 4261470 or 4248214×1
Tile Special 2 x 2 with Bar and StudWhitePart 30256Element 4117032×1
Orange
1 piece
Cupboard 2 x 3 x 2 with Solid StudsOrangePart 4532Element 6106114 or 4520812×1
Pearl Light Gray
1 piece
Technic Axle and Pin Connector, Perpendicular with ExtensionPearl Light GrayPart 53586Element 4494486 or 4286268×1
Trans-Light Blue
1 piece
Bar 4L (Lightsaber Blade / Wand)Trans-Light BluePart 30374Element 6507882 or 6170187×1
Minifigures
4 figures
Astromech Droid, R2-D2, White Dome, 30361c BodyMinifigure, checked as a whole figure×1
Ahsoka Tano, Padawan, Light Bluish Gray LegsMinifigure, checked as a whole figure×1
RottaMinifigure, checked as a whole figure×1
Anakin Skywalker, Pilot Uniform (Clone Wars) (3626b Head)Minifigure, checked as a whole figure×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.