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.
407 pieces in 167 part and color combinations, plus 4 minifigures.
LEGO counts 422 pieces. This inventory comes from a separate parts catalog and lists 423, including the 16 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.
Equipment Camera with Side Sight [aka Space Gun]Dark GrayPart 4360Element 4143695×1
Equipment Radio [Extended Handle, Compact Speaker Grille]Dark GrayPart 3962bElement 4118707×2
Equipment Space Binoculars / Scanner / ElectrobinocularsDark GrayPart 30304Element 4120145×2
Equipment Weapon, Loudhailer / Speaker / Blaster / Space GunDark GrayPart 4349Element 4143006 or 434927×4
Hinge Brick 1 x 2 Locking with Single Finger On TopDark GrayPart 76385Element 4125384×2
Hose Rigid 3mm D. 8L / 6.4cmDark GrayPart 75c08Element 4125354×1
Panel 1 x 4 x 1 with Rounded Corners [Thick Wall]Dark GrayPart 43337Element 4171661 or 4143019×2
Plate 1 x 2Dark GrayPart 3023Element 4111983 or 302327×4
Plate 2 x 10Dark GrayPart 3832Element 4141769 or 383227×1
Plate 4 x 10Dark GrayPart 3030Element 4118874×1
Plate Special 2 x 2 with GrillsDark GrayPart 41862Element 4163164×1
Support 2 x 2 x 10 Girder Triangular Vertical - Type 1 - Solid Top, 3 PostsDark GrayPart 30517Element 4228193 or 4143179×1
Tile 1 x 2 with Joystick and Vehicle Control Panel PrintDark GrayPart 3069bpr0090Element 4120171×1
Trans-Brown
13 pieces
Brick 1 x 2 x 5 without Side SupportsTrans-BrownPart 46212Element 6258834 or 6030737×7
Panel 1 x 4 x 3 [Hollow Studs]Trans-BrownPart 4215bElement 4163113×1
Panel 4 x 4 x 6 Quarter CylinderTrans-BrownPart 30562Element 6289504 or 4195908×4
Windscreen 3 x 4 x 1 1/3 with 2 Studs on TopTrans-BrownPart 2437Element 6507913 or 6253360×1
Trans-Red
11 pieces
Dish 2 x 2 Inverted [Radar]Trans-RedPart 4740Element 6580377 or 6245303×1
Plate 1 x 1Trans-RedPart 3024Element 6513963 or 6252042×2
Plate Round 1 x 1 with Solid StudTrans-RedPart 6141Element 6514051 or 62084501 spare in the box×6
Tile 1 x 2 with GrooveTrans-RedPart 3069bElement 6514220 or 6251290×2
Blue
10 pieces
Brick 1 x 2BluePart 3004Element 4613959 or 300423×2
Brick 2 x 4BluePart 3001Element 300173 or 300123×2
Equipment Cup / Mug [Plain]BluePart 3899Element 389923×1
Plate 2 x 6BluePart 3795Element 379523×1
Seat / Chair 2 x 2BluePart 4079×2
Steering Stand 1 x 2 with Black Steering WheelBluePart 3829c01Element 9566×2
Trans-Yellow
7 pieces
Plate 1 x 2Trans-YellowPart 3023Element 6514002 or 6240211×2
Plate Round 1 x 1 with Solid StudTrans-YellowPart 6141Element 6514056 or 62402161 spare in the box×3
Tile 1 x 1 with GrooveTrans-YellowPart 3070bElement 6636668 or 60887211 spare in the box×2
Trans-Dark Blue
3 pieces
Plate Round 1 x 1 with Solid StudTrans-Dark BluePart 6141Element 6514055 or 62402141 spare in the box×1
Tile 1 x 2 with GrooveTrans-Dark BluePart 3069bElement 6514219 or 6251289×2
Chrome Gold
2 pieces
Tile 1 x 2 with GrooveChrome GoldPart 3069bElement 4193065×2
[No Color/Any Color]
1 piece
Sticker Sheet for Set 7035-1[No Color/Any Color]Part 46169Element 4194476×1
Minifigures
4 figures
Policeman, Dark Blue Shirt with Radio and Badge, Black Legs, Black CapMinifigure, checked as a whole figure×1
Criminal, Orange Prison Outfit with #50380, Dark Gray Hat, Gold ToothMinifigure, checked as a whole figure×1
Policeman, Dark Blue Suit with Tie and Badge, Light Gray Hair, BeardMinifigure, checked as a whole figure×1
Policeman, Dark Blue Shirt with Radio and Badge, Black Legs, Brown HairMinifigure, 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.