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 182 pieces. This inventory comes from a separate parts catalog and lists 184; 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 6Black ×1Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Plate 2 x 2Black ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]RedPart 32054Element 4140806 or 4125198×2
Trans-Clear
4 pieces
Plate Round 1 x 1 with Solid StudTrans-ClearPart 6141Element 6514052 or 6240030×4
Pearl Light Gray
3 pieces
Hose, Ribbed 7mm D. 6L / 4.8cmPearl Light GrayPart 78c06Element 4495202 or 4143468×2
Large Figure Weapon, Claw Hook with AxlePearl Light GrayPart 32551Element 4175939×1
Trans-Orange
2 pieces
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Trans-OrangePart 54200Element 6245265 or 4244369×2
[No Color/Any Color]
1 piece
Sticker Sheet for Set 8140-1[No Color/Any Color]Part 57855Element 4496157×1
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.