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.

ReBuild Activity Cards: Space

Checking

5010355 ReBuild Activity Cards: Space

25 pieces in 25 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

Plates Special 7 pieces

  • Plate Special 1 x 1 with Tooth Black Part 49668 Element 4273590 ×1
  • Plate Special 1 x 4 Offset with Bar Holes Dark Bluish Gray Part 4590 Element 6302647 or 6086709 ×1
  • Bracket 1 x 2 - 2 x 2 Green Part 44728 Element 6117971 or 6048853 ×1
  • Plate Special 1 x 4 with 2 Studs with Groove [New Underside] Medium Azure Part 41740 Element 6252704 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Red Part 15573 Element 6092565 ×1
  • Bracket 1 x 2 - 1 x 2 White Part 99781 Element 6552141 or 6548275 ×1
  • Plate Special 1 x 2 with Three Teeth [Tri-Tooth] White Part 15208 Element 6046381 ×1

Bricks 4 pieces

  • Brick 1 x 2 Bright Light Orange Part 3004 Element 6003003 or 4490695 ×1
  • Brick 2 x 2 Dark Purple Part 3003 Element 4653960 or 4589613 ×1
  • Brick 1 x 4 Red Part 3010 Element 301021 ×1
  • Brick 1 x 2 without Bottom Tube Trans-Clear Part 3065 Element 6514262 or 6244904 ×1

Plates 4 pieces

  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×1
  • Plate 1 x 4 Green Part 3710 Element 371028 ×1
  • Plate 2 x 6 Magenta Part 3795 Element 6186656 or 6015126 ×1
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×1

Tiles Round and Curved 3 pieces

  • Tile Round 1 x 1 Quarter Dark Turquoise Part 25269 Element 6240467 ×1
  • Tile Round 1 x 1 with Curved Black Eye with Central Pupil Partially Closed Print White Part 98138pr0082 Element 6329607 ×1
  • Tile Round 1 x 1 with Offset Black Eye Print White Part 98138pr0008 Element 6284599 or 6029156 ×1

Bricks Round and Cones 2 pieces

  • Brick Round 2 x 2 with Axle Hole Dark Turquoise Part 3941 Element 6290502 ×1
  • Brick Round 1 x 1 Open Stud White Part 3062b Element 6619283 or 306201 ×1

Bricks Sloped 2 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Orange Part 54200 Element 6104342 or 6087167 ×1

Bricks Curved 1 piece

  • Brick Arch 1 x 3 x 2 Reddish Brown Part 88292 Element 6186577 ×1

Panels 1 piece

  • Panel 1 x 1 x 1 Corner Medium Azure Part 6231 Element 4618645 ×1

Plates Round Curved and Dishes 1 piece

  • Dish 2 x 2 Inverted [Radar] Black Part 4740 Element 474026 ×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.