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.

Hook-Truck

Checking

3504 Hook-Truck

32 pieces in 11 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

Purple 9 pieces

  • Znap Connector 3 x 3 - 4 way B (Beam) Purple Part 32211 Element 4120200 ×9

Yellow 9 pieces

  • Znap Beam 1/2 Circle Radius 2L Yellow Part 32205 Element 4128658 or 4120440 ×1
  • Znap Beam 16, 9 Holes, 5 Bends Yellow Part 32208 Element 4120441 ×1
  • Znap Beam 3, 1 Hole Yellow Part 32210 Element 4128659 or 4120190 ×3
  • Znap Beam 7, 3 Holes Yellow Part 32203 Element 4128655 or 4120427 ×2
  • Znap Beam 9, 8 Holes, Triangular Yellow Part 32214 Element 4125308 or 4120193 ×2

Light Gray 6 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×4
  • Znap Connector 1 x 3 - 2 way A Light Gray Part 32212 Element 4120191 ×2

Black 4 pieces

  • Wheel 32mm Znap Propeller Black Part 32219 Element 4120493 ×4

Dark Gray 2 pieces

  • Znap Crank Connector 1 x 2 x 3 Dark Gray Part 32207 Element 4120472 ×2

White 2 pieces

  • Technic Axle 5.5 with Stop [Flat Short End] White Part 32209 Element 4120471 ×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.