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.

Happy Hummingbird

Checking

5010173 Happy Hummingbird

156 pieces in 73 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 23 pieces

  • Plate 1 x 4 Blue Part 3710 Element 371023 ×2
  • Plate 2 x 2 Bright Pink Part 3022 Element 6096589 or 4245314 ×4
  • Plate 2 x 6 Medium Azure Part 3795 Element 6603340 or 6146926 ×1
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×1
  • Plate 1 x 6 Yellow Part 3666 Element 366624 ×8
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×1
  • Plate 2 x 8 Yellow Part 3034 Element 303424 ×2
  • Plate 3 x 3 Corner Yellow Part 77844 Element 6518941 ×2
  • Plate 4 x 6 Yellow Part 3032 Element 303224 ×2

Bricks Curved 20 pieces

  • Brick Curved 1 x 2 x 1 2/3 with 1 Cutout Bright Pink Part 5907 Element 6540392 ×8
  • Brick Curved Inverted 2 x 2 with 1 x 2 Cutouts Bright Pink Part 1750 Element 6476741 ×4
  • Brick Curved Inverted 2 x 2 x 2/3 Dark Azure Part 32803 Element 6382585 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Sand Green Part 11477 Element 6196591 ×1
  • Brick Curved Inverted 2 x 1 Sand Green Part 24201 Element 6278553 ×1
  • Brick Curved 4 x 6 Double, 2 x 4 Cutout Yellow Part 78522 Element 6430293 ×4

Plates Special 17 pieces

  • Plate Special 1 x 1 with Handle on 2 Ends Black Part 78257 Element 6398391 ×1
  • Plate Special 1 x 2 with Angled Handles on Side Black Part 92692 Element 4604304 ×1
  • Technic Plate 2 x 8 [7 Holes] Black Part 3738 Element 373826 ×1
  • Plate Special 1 x 2 with Clip Horizontal on Side Blue Part 11476 Element 6313131 or 6213381 ×3
  • Plate Special 1 x 2 with Clip Horizontal on Side Bright Pink Part 11476 Element 6437704 ×4
  • Plate Special 1 x 1 Rounded with Handle Green Part 26047 Element 6253140 ×2
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Green Part 61252 Element 6535693 or 4597272 ×3
  • Plate Special 2 x 2 with Bar Frame Octagonal, Reinforced, Completely Round Studs Reddish Orange Part 75937 Element 6510511 ×1
  • Plate Special Round 2 x 2 with Pin Hole and 4 Bars Up Sand Green Part 98284 Element 6329274 ×1

Bricks Sloped 12 pieces

  • Brick Sloped 30° 1 x 2 x 2/3 Bright Pink Part 85984 Element 4649749 ×4
  • Brick Sloped Inverted 45° 2 x 1 Bright Pink Part 3665 Element 6424111 or 6061686 ×8

Bricks Special 10 pieces

  • Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side Dark Blue Part 22885 Element 6429965 or 6224469 ×4
  • Brick Special 1 x 4 with 4 Studs on One Side Dark Bluish Gray Part 30414 Element 4210725 ×4
  • Brick Special 2 x 4 with 3 Axle Holes Reddish Brown Part 39789 Element 6365882 ×1
  • Brick Special 1 x 1 Studs on 4 Sides White Part 4733 Element 4111971 or 473301 ×1

Panels 9 pieces

  • Panel 1 x 2 x 3 [Side Supports / Hollow Studs] Tan Part 87544 Element 6300317 ×3
  • Panel 1 x 4 x 2 with Side Supports - Hollow Studs Yellow Part 14718 Element 6299765 ×6

Bricks Round and Cones 7 pieces

  • Brick Round 2 x 2 D. Tube with 45° Elbow and Axle Holes (Crossholes) at Each End [LONG] Bright Green Part 5489 Element 6549669 or 6478784 ×2
  • Cone 1 x 1 [Top Groove] Bright Green Part 59900 Element 6331100 ×1
  • Brick Round 2 x 2 Dome Bottom [Open Stud] Bright Pink Part 15395 Element 6541655 ×3
  • Cone 3 x 3 x 2 Bright Pink Part 6233 Element 6469822 ×1

Bricks Wedged 6 pieces

  • Brick Wedged, Curved 2 x 1 with Stud Notch Left Green Part 29120 Element 6290602 ×3
  • Brick Wedged, Curved 2 x 1 with Stud Notch Right Green Part 29119 Element 6290601 ×3

Plates Round Curved and Dishes 5 pieces

  • Plate Round 1 x 1 with Open Stud Dark Green Part 85861 Element 6230571 1 spare in the box ×1
  • Plate Round Corner 3 x 3 Green Part 30357 Element 6062166 or 4541187 ×2
  • Plate Round 1 x 1 with Open Stud White Part 85861 Element 6168642 or 4547649 1 spare in the box ×1
  • Plate Special 1 x 2 Rounded with 2 Open Studs White Part 35480 Element 6552167 or 6550175 ×1

Technic Bushes 5 pieces

  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×1
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellowish Green Part 32123b Element 6553342 1 spare in the box ×4

Tiles 5 pieces

  • Tile 1 x 3 Green Part 63864 Element 6023083 ×1
  • Tile 1 x 4 with Groove Yellow Part 2431 Element 243124 ×2
  • Tile 1 x 8 with Groove Yellow Part 4162 Element 6388482 or 4189400 ×2

Bricks 4 pieces

  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×2
  • Brick 1 x 8 Yellow Part 3008 Element 300824 ×2

Technic Axles 4 pieces

  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×2
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×1
  • Technic Axle 6 Red Part 3706 Element 6130002 or 4191526 ×1

Technic Connectors 4 pieces

  • Technic Axle and Pin Connector Angled Triple [120° Offset] Red Part 10288 Element 6532099 ×1
  • Technic Pin Connector Hub with 1 Axle White Part 22961 Element 6179606 ×2
  • Technic Pin Connector Round 1L [Beam] Yellow Part 18654 Element 6431481 1 spare in the box ×1

Technic Pins 4 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×4

Tiles Special 4 pieces

  • Tile Special Round 2 x 2 with Hole Bright Green Part 15535 Element 6536988 ×2
  • Tile Special Round 2 x 2 with Hole Reddish Brown Part 15535 Element 6092568 ×1
  • Tile Special 1 x 3 Inverted with Center Hole White Part 35459 Element 6548289 or 6223491 ×1

Bars, Ladders and Fences 3 pieces

  • Bar 3L Black Part 87994 Element 6185316 or 6093525 1 spare in the box ×1
  • Bar Curved with Axle End and 1 x 1 Round Plate Sand Green Part 4042 Element 6525748 ×1
  • Bar 1 x 12 with 1 x 2 Plate End with Solid Studs and 1 x 1 Round Plate End Trans-Clear Part 42445 Element 6276993 or 4169199 ×1

Plants & Trees 3 pieces

  • Plant, Leaf/Petal 4 x 6 x 1 1 / 3 Bright Green Part 7096 Element 6559758 ×2
  • Plant, Flower, Peony Rose with 2 Layers Orange Part 5904 Element 6550815 or 6515227 ×1

Technic Bricks 3 pieces

  • Technic Brick 1 x 1 with Axle Hole Sand Green Part 73230 Element 6359069 ×1
  • Technic Brick 1 x 8 [7 Pin Holes] Yellow Part 3702 Element 370224 ×2

Tiles Round and Curved 3 pieces

  • Tile Round 1 x 1 Half Circle Green Part 24246 Element 6250600 or 6174154 1 spare in the box ×1
  • Tile Round 1 x 1 with Thin Black Halve Circle / Closed Eye Print White Part 98138pr9977 Element 6433502 1 spare in the box ×2

Plates Wedged 2 pieces

  • Wedge Plate 3 x 2 Left Dark Azure Part 43723 Element 6565473 or 6167074 ×1
  • Wedge Plate 3 x 2 Right Dark Azure Part 43722 Element 6565474 or 6167073 ×1

Technic Steering, Suspension and Engine 2 pieces

  • Technic Engine Crankshaft Light Bluish Gray Part 2853 Element 6640384 or 4211609 ×1
  • Technic Engine Crankshaft Center Tan Part 2854 Element 6355727 or 6013937 ×1

Technic Beams 1 piece

  • Technic Beam 1 x 3 Thin Lime Part 6632 Element 6364449 or 6149985 ×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.