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.

MUJI Sea Set

Checking

8785476 MUJI Sea Set

91 pieces in 16 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

White 57 pieces

  • Baseplate 16 x 32 White Part 3857 Element 6030593 or 4295314 ×2
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×20
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×20
  • Brick Round 1 x 1 Open Stud White Part 3062b Element 6619283 or 306201 1 spare in the box ×4
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 1 spare in the box ×6
  • Turntable 2 x 2 Plate, Base White Part 3680 Element 368001 ×5

Trans-Light Blue 10 pieces

  • Brick Round 1 x 1 Open Stud Trans-Light Blue Part 3062b Element 6514238 or 6238677 ×4
  • Plate Round 1 x 1 with Solid Stud Trans-Light Blue Part 6141 Element 6514058 or 6240225 1 spare in the box ×6

Light Bluish Gray 5 pieces

  • Turntable 2 x 2 Plate - Top Light Bluish Gray Part 3679 Element 4540203 or 4495467 ×5

Red 4 pieces

  • Hinge Plate 1 x 2 Locking with 1 Finger On End, with Groove Red Part 44301a Element 4183039 ×2
  • Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth Red Part 44302a Element 6249371 or 6074865 ×2

Trans-Green 4 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Green Part 6141 Element 6514057 or 6240221 1 spare in the box ×4

Trans-Orange 4 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Orange Part 6141 Element 6514059 or 6240227 1 spare in the box ×4

Trans-Red 3 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×3

Trans-Yellow 3 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 1 spare in the box ×3

Black 1 piece

  • String with End Studs 41L Overall Black Part 14226c41 Element 6096957 or 6074034 ×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.