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.

Wheels and Strings

Checking

1305 Wheels and Strings

94 pieces in 6 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

Wheels and Tyres 60 pieces

  • Tyre Offset Tread 24 x 8 Black Part 3483 Element 4501048 or 348326 ×20
  • Technic Wedge Belt Wheel [aka Pulley] Light Gray Part 4185 Element 4100502 or 418502 ×20
  • Wheel with Split Axle hole Light Gray Part 3482 Element 348202 ×20

String, Bands and Reels 24 pieces

  • Rubber Band Large [Square Cross Section] Black Part 70158 ×20
  • String Cord Thin (0.5mm) 75cm Black Part 56823c75 Element 7909 ×4

Technic Steering, Suspension and Engine 10 pieces

  • Technic Steering Pulley Large Light Gray Part 3736 Element 373602 ×10

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.