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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.

Seismo

Checking

41504 Seismo

50 pieces in 22 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.

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Piece checklist

Bricks Sloped 17 pieces

  • Brick Sloped 45° 2 x 1 Double / Inverted with Bottom Stud Holder Black Part 3049d Element 4220539 ×1
  • Brick Sloped 65° 2 x 1 x 2 Black Part 60481 Element 4515373 ×2
  • Brick Sloped 45° 2 x 1 with 2/3 Cutout [Original Version] Dark Bluish Gray Part 92946 ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Light Bluish Gray Part 54200 Element 4521921 or 4244372 1 spare in the box ×3
  • Brick Sloped 65° 2 x 1 x 2 Light Bluish Gray Part 60481 Element 4515374 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Pearl Gold Part 54200 Element 4587002 1 spare in the box ×3
  • Brick Sloped 45° 2 x 1 Triple with Ovoid Bottom Pin Pearl Gold Part 3048c Element 4295174 ×2

Plates Special 14 pieces

  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Black Part 61252 Element 6308000 or 4517925 ×6
  • Plate Special 1 x 2 with 5.9mm Centre Side Towball Dark Bluish Gray Part 14417 Element 6414560 or 6338160 ×2
  • Plate Special 1 x 2 with 5.9mm Towball Socket and Towball Dark Bluish Gray Part 14419 Element 6414554 or 6338166 ×2
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Dark Bluish Gray Part 60478 Element 4521187 ×2
  • Plate Special 1 x 2 5.9mm Towball Socket Light Bluish Gray Part 14418 Element 6414556 or 6338163 ×2

Plates 9 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×4
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×2
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×3

Bricks Wedged 3 pieces

  • Brick Wedged, Curved 1 x 2 x 2/3 No Studs, Wing End Black Part 47458 Element 6375706 or 4218581 ×1
  • Brick Wedged, Sloped 45° 2 x 4 Triple Dark Bluish Gray Part 47759 Element 6027686 ×2

Animal / Creature Body Parts 2 pieces

  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Medium Black Part 87747 Element 6270091 or 4563477 1 spare in the box ×2

Bricks Curved 2 pieces

  • Brick Curved 2 x 1 No Studs [1/2 Bow] Light Bluish Gray Part 11477 Element 6028813 ×2

Bricks Round and Cones 1 piece

  • Brick Round 4 x 4 Centre Hole Dark Bluish Gray Part 87081 Element 4558959 ×1

Plates Round Curved and Dishes 1 piece

  • Plate Round 4 x 4 with Pin Hole Dark Bluish Gray Part 60474 Element 4528323 ×1

Tiles Round and Curved 1 piece

  • Tile Round 2 x 2 with Offset Black Eye Print White Part 14769pr1003 Element 6545267 or 6060734 ×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.

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