Free tool

LEGO Missing Piece Checker

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.

Gear Supplementary Set

Checking

802 Gear Supplementary Set

30 pieces in 10 part and color combinations.

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.

Show

Piece checklist

Red 12 pieces

  • Technic Bush with One Flange - Type One Red Part 584 ×8
  • Technic Gear 9 Large Tooth Red Part 569 ×4

Milky White 6 pieces

  • Technic Axle 12 Milky White Part 3708 ×1
  • Technic Axle 4 Milky White Part 3705 ×1
  • Technic Axle 6 Milky White Part 3706 ×2
  • Technic Axle 8 Milky White Part 3707 ×2

Light Gray 5 pieces

  • Technic Brick 2 x 4 with Top/Side/End Holes and Hollow Studs Light Gray Part 3709a ×5

Blue 3 pieces

  • Technic Gear 15 Large Tooth Blue Part 570 ×3

Metal 2 pieces

  • Technic Axle Metal [Short] for Expert Builder Gears Metal Part upn0151 ×2

Yellow 2 pieces

  • Technic Gear 21 Large Tooth Yellow Part 572 ×2

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.

Request a replacement from LEGO

Buy the piece

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.