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.

Swamp Boat

Checking

2137 Swamp Boat

8 pieces in 7 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 3 pieces

  • Plate 1 x 4 Red Part 3710 Element 371021 ×2
  • Plate 2 x 4 Red Part 3020 Element 302021 ×1

Yellow 3 pieces

  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×1
  • Brick Sloped 33° 3 x 2 Yellow Part 3298 Element 329824 ×1
  • Propeller 3 Blade 3 Diameter with Axle Cross Yellow Part 6041 Element 604124 ×1

Blue 1 piece

  • Brick Special 1 x 2 with Pin Blue Part 2458 Element 245823 ×1

Trans-Clear 1 piece

  • Brick Sloped 45° 2 x 2 Trans-Clear Part 3039 Element 6514100 or 6244886 ×1

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.