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
75 pieces in 31 part and color combinations, plus 1 minifigure.
The official piece count includes the 6 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 (70104) and each piece's element ID, both listed above.
As an eBay Partner, we earn from qualifying purchases at no extra cost to you.
Brick Arch 1 x 12 x 3
×2
Brick Special 1 x 2 Palisade [aka Log]
×4
Plate 1 x 2
×6
Dish 2 x 2 Inverted [Radar]
×2
Fly Wheel with Plate 2 x 8 and Dark Azure Tire [Complete Assembly] (Rip Cord Base)
×1
Plate Round 1 x 1 with Solid Stud
1 spare in the box
×4
Rock Boulder 4 x 4, Top
×4
Brick Round 1 x 1 Open Stud
×4
Plant, Round 1 x 1 - 3 Bamboo Leaves
×4
Brick Special 2 x 3 x 3 with Cutout and Lion Head [Hollow Studs]
×4
Plate Special 2 x 2 with Wheels Holder Wide - Technic Pins
×1
Wheel 11 x 8 with Center Groove
×2
Rock 1 x 1 Crystal 4 Point
×6
Tile Round 1 x 1
1 spare in the box
×1
Wave / Flame Rounded with Base Rim
×6
Technic Pin with Friction Ridges Lengthwise and Center Slots
1 spare in the box
×2
Tyre 14 x 6 Solid Smooth
×2
Brick Curved 3 x 1 No Studs
×4
Plant, Leaves 6 x 5 Swordleaf with Clip [Thick U Clip]
×4
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small
1 spare in the box
×1
Bar 1L with Top Stud and Two Side Studs
×1
Tool Chainsaw Blade
×1
Fairing, Fly Wheel, Lion Shape with Silver and Dark Brown Print
×1
Rip Cord Flexible with Handle
×1
Weapon Pike / Spear Flat End
×1
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Medium
×1
Lennox with Flat Silver Shoulder Armor
×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.
