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.

Sea Playmat

Checking

853841 Sea Playmat

11 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

Tan 6 pieces

  • Brick 2 x 2 Tan Part 3003 Element 4114306 or 300305 ×6

[No Color/Any Color] 2 pieces

  • Baseplate with 4 Square Corner Holes and Beach / Embankment (Landing) Print [No Color/Any Color] Part upn0316pr0014 ×1
  • Baseplate with 4 Square Corner Holes and Water / Beach Print [No Color/Any Color] Part upn0316pr0013 ×1

Bright Light Orange 1 piece

  • Animal, Crab Bright Light Orange Part 33121 Element 6253362 or 6005772 ×1

Dark Azure 1 piece

  • Plate 2 x 8 Dark Azure Part 3034 Element 6216890 ×1

Medium Azure 1 piece

  • Plate 8 x 8 Medium Azure Part 41539 Element 6205088 ×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.