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.
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 (1704-2) and each piece's element ID, both listed above.
As an eBay Partner, we earn from qualifying purchases at no extra cost to you.
Pen Bead, Round Large, Curved Edges / Cylinder with Black Crossing Lines Print
×1
Pen Bead, Round Orb, 4 Discs
×1
Pen Bead, Square with 'Fe', 'U', 'Mn', and 'Pb' Print
×1
Pen Bead, Square with Matoran Alphabet O, N, U and A Print
×1
Pen Bead, Square with Mechanical Claw Print
×1
Pen Bead, Square with Onua, Clouds Print
×1
Pen Bead, Square with Turaga Whenua, Ruru Print
×1
Pen Body, with Chrome Tip, Pearl Dark Gray Ends
×1
Pen Bead, Bionicle Mask, Kanohi Pakari
×1
Pen Bead, Gear
×1
Pen Bead, Round Large, Curved Edges / Cylinder with 'ONUA' Print
×1
Pen Bead, Round Orb with Bionicle Logo Print
×1
Pen Bead, Round Short, Curved Edge
×1
Pen Bead, Round Curved, Hourglass
×1
Pen Bead, Round Orb
×1
Pen Shaft, with Pocket Clip [Plain]
×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.
