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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.

Birthday Cupcake

Checking

40905 Birthday Cupcake

170 pieces in 48 part and color combinations, plus 1 minifigure.

The official piece count includes the 4 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

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

Reddish Brown 37 pieces

  • Brick 1 x 2 Reddish Brown Part 3004 Element 4613963 or 4211149 ×4
  • Brick Curved 1 x 2 x 2/3 Double Curved Top, No Studs Reddish Brown Part 3563 Element 6433392 ×4
  • Brick Sloped 18° 4 x 2 Reddish Brown Part 30363 Element 4225869 ×4
  • Brick Sloped 45° 2 x 1 with Bottom Pin Reddish Brown Part 3040b Element 4211199 ×8
  • Brick Wedged, Sloped 4 x 2 Triple Left Reddish Brown Part 43710 Element 6469996 or 6020149 ×4
  • Brick Wedged, Sloped 4 x 2 Triple Right Reddish Brown Part 43711 Element 6469995 or 6020148 ×4
  • Plate 1 x 6 Reddish Brown Part 3666 Element 4221590 ×2
  • Plate 2 x 4 Reddish Brown Part 3020 Element 4211186 ×4
  • Plate 4 x 6 Reddish Brown Part 3032 Element 4271874 or 4211213 ×3

Bright Pink 24 pieces

  • Brick 2 x 4 Bright Pink Part 3001 Element 4520632 or 4497168 ×2
  • Brick Round, Curved 2 x 2 x 1, Corner Bright Pink Part 5846 Element 6583817 ×12
  • Plate 2 x 2 Bright Pink Part 3022 Element 6096589 or 4245314 ×2
  • Plate Round Corner 4 x 4 Bright Pink Part 30565 Element 6544045 or 6213793 ×4
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Bright Pink Part 15573 Element 6264994 ×4

White 16 pieces

  • Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side White Part 22885 Element 6603759 or 6218823 ×2
  • Dish 3 x 3 Inverted [Radar] White Part 43898 Element 4179580 ×1
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×2
  • Plate Round Corner 2 x 2 with 1 x 1 Cutout White Part 79491 Element 6564910 or 6499714 ×6
  • Plate Special 1 x 2 Rounded with 2 Open Studs White Part 35480 Element 6552167 or 6550175 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] White Part 2540 Element 4140583 or 254051 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) White Part 87580 Element 6550157 or 6126046 ×2

Medium Azure 15 pieces

  • Brick Round 1 x 1 Open Stud Medium Azure Part 3062b Element 4620909 ×8
  • Plate 1 x 6 Medium Azure Part 3666 Element 6603312 or 4625036 ×2
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Medium Azure Part 18674 Element 6136419 ×1
  • Tile Round 1 x 1 Quarter Medium Azure Part 25269 Element 6603341 or 6150370 1 spare in the box ×4

Yellow 13 pieces

  • Bar 7 x 3 with Double Clips (Ladder) [Round Clips] Yellow Part 5630 Element 6529090 ×1
  • Plate Round 1 x 1 with Solid Stud Yellow Part 6141 Element 614124 1 spare in the box ×4
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Half Hollow Anti-stud] - Updated Version Yellow Part 4304 Element 6469455 ×4
  • Tile Round 1 x 1 Quarter Yellow Part 25269 Element 6195183 1 spare in the box ×4

Red 11 pieces

  • Brick Round 2 x 2 Dome Top, Vented Stud Red Part 3262 Element 6429055 ×1
  • Plate 1 x 4 Red Part 3710 Element 371021 ×6
  • Tile 1 x 1 Heart Red Part 39739 Element 6518541 or 6435651 1 spare in the box ×4

Medium Nougat 10 pieces

  • Plate 1 x 4 Medium Nougat Part 3710 Element 6167700 ×6
  • Tile Round 1 x 1 Quarter Medium Nougat Part 25269 Element 6248536 1 spare in the box ×4

Light Bluish Gray 8 pieces

  • Brick Special 1 x 2 x 1 2/3 with 8 Studs on 3 Sides Light Bluish Gray Part 67329 Element 6301870 ×4
  • Plate Special 1 x 2 Rounded with 2 Open Studs Light Bluish Gray Part 35480 Element 6248890 ×2
  • Plate Special 4 x 4 with 2 x 2 Opening Light Bluish Gray Part 64799 Element 4612621 ×2

Lime 8 pieces

  • Brick Special 1 x 4 with 4 Studs on One Side Lime Part 30414 Element 6146888 ×4
  • Tile Round 1 x 1 Quarter Lime Part 25269 Element 6211875 1 spare in the box ×4

Trans-Orange 8 pieces

  • Wave / Flame Small with Pin Trans-Orange Part 37775 Element 6514274 or 6357747 1 spare in the box ×8

Orange 5 pieces

  • Brick and Axle Separator v2.0 Orange Part 96874 Element 6240515 or 4654448 ×1
  • Tile Round 1 x 1 Quarter Orange Part 25269 Element 6173925 1 spare in the box ×4

Dark Pink 4 pieces

  • Plate Round 1 x 1 with Solid Stud Dark Pink Part 6141 Element 6195315 or 4243576 1 spare in the box ×4

Medium Lavender 4 pieces

  • Tile Round 1 x 1 Quarter Medium Lavender Part 25269 Element 6199893 1 spare in the box ×4

Pearl Gold 4 pieces

  • Tile, Star with Stud Holder, Pin Hole Pearl Gold Part 11609 Element 6651230 or 6184647 1 spare in the box ×4

Bright Green 1 piece

  • Food Hot Dog / Sausage Bright Green Part 33078 Element 6430093 1 spare in the box ×1

Green 1 piece

  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Green Part 24866 Element 6135287 1 spare in the box ×1

Trans-Dark Blue 1 piece

  • Balloon Dog Trans-Dark Blue Part 35692 Element 6660799 or 6326484 ×1

Minifigures 1 figure

  • Chef, White Short Legs Minifigure, checked as a whole figure ×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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