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 386 pieces. This inventory comes from a separate parts catalog and lists 387; 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.
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.
Plate 1 x 1Black ×6Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate 1 x 2Black ×9Dark Bluish Gray ×9Black is darker than Dark Bluish Gray.
Plate 2 x 3Black ×5Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 2 x 4Black ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 2 x 6Black ×1Dark Bluish Gray ×10Black is darker than Dark Bluish Gray.
Plate 3 x 3Black ×12Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
1 more look-alike pair
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)Black ×2Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Bracket 1 x 2 - 1 x 2Light Bluish GrayPart 99781Element 4654582×1
Plate 2 x 4Light Bluish GrayPart 3020Element 4211395×1
Plate 2 x 6Light Bluish GrayPart 3795Element 4211452 or 3795194×1
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)Light Bluish GrayPart 4032aElement 4211475×3
Plate Special 4 x 4 with 2 x 2 OpeningLight Bluish GrayPart 64799Element 4612621×4
Trans-Light Blue
10 pieces
Tile Round 1 x 1Trans-Light BluePart 98138Element 6514192 or 62747391 spare in the box×10
Trans-Red
9 pieces
Tile 1 x 2 with GrooveTrans-RedPart 3069bElement 6514220 or 6251290×1
Tile Round 1 x 1Trans-RedPart 98138Element 6514189 or 62586071 spare in the box×8
Red
7 pieces
Equipment Wand [Individual]RedPart 36752a×2
Plate Special 1 x 2 Rounded with 2 Open StudsRedPart 35480Element 6210269×2
Technic Pin 1/2 with FrictionRedPart 89678Element 63781201 spare in the box×2
Tile Round 1 x 1 QuarterRedPart 25269Element 61703901 spare in the box×1
White
5 pieces
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)WhitePart 15573Element 6550152 or 6051511×3
Technic Plate 2 x 4 [3 Holes]WhitePart 3709Element 370901×2
Dark Tan
2 pieces
Technic Axle 3 with StudDark TanPart 6587Element 6031821 or 6013821×2
Flat Silver
2 pieces
Tile Special 1 x 2 Grille with Bottom GrooveFlat SilverPart 2412bElement 4619636×2
Trans-Clear
2 pieces
Plate 1 x 1Trans-ClearPart 3024Element 6513962 or 62520411 spare in the box×2
Trans-Orange
2 pieces
Plate Round 1 x 1 with Solid StudTrans-OrangePart 6141Element 6514059 or 62402271 spare in the box×2
Dark Orange
1 piece
Tile Round 1 x 1Dark OrangePart 98138Element 63228401 spare in the box×1
Orange
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Reddish Brown
1 piece
Technic Axle 5 with StopReddish BrownPart 15462Element 6159763×1
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.