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.
1,613 pieces in 515 part and color combinations, plus 7 minifigures.
The official piece count includes the 22 parts inside the set's minifigures, which this inventory lists separately. 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 1Red ×3Trans-Red ×3Trans-Red is see-through: hold the piece up to a light.
Brick 1 x 1White ×4Trans-Clear ×12Trans-Clear is see-through: hold the piece up to a light.
Plate 1 x 2White ×4Trans-Clear ×6Trans-Clear is see-through: hold the piece up to a light.
Tile Special 1 x 2 Grille with Bottom GrooveDark Bluish Gray ×11Flat Silver ×1Dark Bluish Gray is darker than Flat Silver.
Tile Special 1 x 2 Grille with Bottom GrooveLight Bluish Gray ×2Flat Silver ×1Light Bluish Gray is lighter than Flat Silver.
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)Dark Turquoise ×4Medium Azure ×3Dark Turquoise is darker than Medium Azure.
3 more look-alike pairs
Plate Special 1 x 2 Rounded with 2 Open StudsDark Turquoise ×3Medium Azure ×1Dark Turquoise is darker than Medium Azure.
Plate 1 x 5Black ×2Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Tile Special 1 x 2 Grille with Bottom GrooveBlack ×8Dark Bluish Gray ×11Black is darker than Dark Bluish Gray.
Sticker Sheet 1 for Set 10352-1[No Color/Any Color]Part 10111531Element 6528983×1
Sticker Sheet 2 for Set 10352-1[No Color/Any Color]Part 10113929Element 6549874×1
Dark Brown
1 piece
Weapon Slingshot with Dark Tan Band PrintDark BrownPart 19900pr0001Element 6586362 or 64458511 spare in the box×1
Dark Tan
1 piece
Plate Round 1 x 1 with Open StudDark TanPart 85861Element 63003221 spare in the box×1
Trans-Black
1 piece
Plate 1 x 2Trans-BlackPart 3023Element 6514010 or 6471727×1
Minifigures
7 figures
Bart SimpsonMinifigure, checked as a whole figure×1
Lisa Simpsons, Skirt with 2 Center Leg HolesMinifigure, checked as a whole figure×1
Jeremy Freedman / Squeaky-Voiced TeenMinifigure, checked as a whole figure×1
Sideshow BobMinifigure, checked as a whole figure×1
Sergeant LouMinifigure, checked as a whole figure×1
Homer Simpsons, Stained ShirtMinifigure, checked as a whole figure×1
Krusty the Clown, Farmer OutfitMinifigure, 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.