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.

Two Train Wagons

Checking

152 Two Train Wagons

22 pieces in 6 part and color combinations.

LEGO counts 28 pieces. This inventory comes from a separate parts catalog and lists 22; the two do not always count the same elements, so their totals differ. 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.

Show

Piece checklist

Red 12 pieces

  • Plate Special 3 x 2 with Hole (Train Coupler Closed) with Hook Red Part 3176c01 ×2
  • Plate Special 3 x 2 with Rounded End, Hole Red Part 3176 Element 4188189 or 317621 ×2
  • Train Wheel with 2 x 2 Stud Center, Traction Teeth Red Part upn0384a ×8

Blue 4 pieces

  • Brick 2 x 4 without Cross Supports Blue Part 3001a ×4

White 4 pieces

  • Brick Special 2 x 4 with Wheel Holder Old, Clear Bottom, Red Inside White Part 7049bc01 ×4

Light Gray 2 pieces

  • Plate 6 x 16 Light Gray Part 3027 Element 4160991 or 302702 ×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.