Free tool
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.
Checking
49 pieces in 25 part and color combinations, plus 1 minifigure.
The official piece count includes the 4 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
LEGO's request form asks for the set number (43209) and each piece's element ID, both listed above.
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Brick 1 x 2
×4
Brick 1 x 2 x 5 with Birch Tree Trunks, and Magenta Leaves Print
×2
Brick 2 x 2 x 3
×2
Brick Arch 1 x 3 x 2
×4
Brick Arch 1 x 6 Raised Arch
×1
Brick Sloped 33° 3 x 2
×2
Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm]
×2
Brick Curved 2 x 2, Two Top Studs
×1
Brick Round 1 x 1 Open Stud
×2
Brick Sloped 18° 4 x 2
×2
Brick Special 1 x 2 with 2 Studs on 1 Side
×2
Equipment Hairbrush Short Handle [10mm]
×1
Plate 1 x 2
×2
Plate Special 2 x 2 with Groove and Center Stud (Jumper)
×1
Bar 4L (Lightsaber Blade / Wand)
×4
Rock 1 x 1 Jewel / Gem 24 Facet
1 spare in the box
×2
Snowflake / Star 4 x 4
×1
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)
×4
Plant, Leaves 6 x 5
×2
Plate 8 x 8 with Rounded End
×1
Plant, Plate 1 x 1 Round with 3 Leaves
×2
Treasure Chest Bottom with Rear Slots, No Groove
×1
Treasure Chest Lid [Thick Hinge]
×1
Plant, Carrot
×2
Animal, Horse with Long Water Tail
×1
Elsa, Medium Lavender and White Dress, No Cape
×1
Tick each piece as you find it, or mark it missing.
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.
Request a replacement from LEGOMark 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.
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.
