BlockTalk Find Your Set

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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.

All Kinds of Animals

Checking

4121 All Kinds of Animals

174 pieces in 64 part and color combinations.

LEGO counts 171 pieces. This inventory comes from a separate parts catalog and lists 174; the two do not always count the same elements, so their totals differ. 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

Bricks 96 pieces

  • Brick 1 x 2 Black Part 3004 Element 300426 ×2
  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×4
  • Brick 2 x 3 Black Part 3002 Element 300226 ×2
  • Brick 2 x 4 Black Part 3001 Element 300126 ×2
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×6
  • Brick 1 x 4 Blue Part 3010 Element 301023 ×4
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×2
  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×4
  • Brick 2 x 3 Blue Part 3002 Element 300223 ×4
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×4
  • Brick 2 x 6 Blue Part 2456 Element 4181139 or 245623 ×2
  • Brick 1 x 2 Brown Part 3004 Element 300425 ×6
  • Brick 1 x 4 Brown Part 3010 Element 4143915 or 301025 ×4
  • Brick 2 x 2 Brown Part 3003 Element 4140745 or 300325 ×4
  • Brick 2 x 4 Brown Part 3001 Element 4124052 or 4112546 ×2
  • Brick 1 x 1 with Simple Eye Black and White Print Red Part 3005pr9996 Element 4107819 ×2
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×6
  • Brick 1 x 4 Red Part 3010 Element 301021 ×2
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×4
  • Brick 2 x 3 Red Part 3002 Element 300271 or 300221 ×4
  • Brick 2 x 4 Red Part 3001 Element 300121 ×2
  • Brick 1 x 1 with Simple Eye Black and White Print Yellow Part 3005pr9996 Element 82357 ×2
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×6
  • Brick 1 x 2 with Black and White Squinting Eyes and Hair Print Yellow Part 3004pr9980 Element 4143432 ×1
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×4
  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×4
  • Brick 2 x 3 Yellow Part 3002 Element 300224 ×4
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×2
  • Brick 2 x 4 with Snout, Fangs, and Whiskers Print Yellow Part 3001pr0011 Element 4143431 ×1

Bricks Sloped 36 pieces

  • Brick Sloped 33° 3 x 2 with Red on Yellow Triangles Print Blue Part 3298pr0005 Element 4107821 ×2
  • Brick Sloped 45° 2 x 2 Blue Part 3039 Element 303923 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Blue Part 3660 Element 366023 ×4
  • Brick Sloped 45° 2 x 2 Brown Part 3039 Element 4124058 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Brown Part 3660 Element 4143260 ×4
  • Brick Sloped 45° 2 x 2 Red Part 3039 Element 303921 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Red Part 3660 Element 366021 ×4
  • Brick Sloped 33° 3 x 1 Yellow Part 4286 Element 428624 ×2
  • Brick Sloped 45° 2 x 2 Yellow Part 3039 Element 303924 ×4
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Yellow Part 3747b Element 4500459 or 374724 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Yellow Part 3660 Element 366024 ×2

Plates 12 pieces

  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×2
  • Plate 2 x 8 Blue Part 3034 Element 303423 ×2
  • Plate 2 x 3 Red Part 3021 Element 302121 ×2
  • Plate 2 x 4 Red Part 3020 Element 302021 ×2
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×2
  • Plate 2 x 6 Yellow Part 3795 Element 379524 ×2

Wheels and Tyres 8 pieces

  • Tyre 30.4 x 14 Offset Tread Black Part 30391 Element 4140670 or 3039126 ×4
  • Wheel 18 x 14 with Tread Small Hub White Part 30285 Element 4116774 ×4

Plants & Trees 6 pieces

  • Plant, 1 x 1 x 2/3 - 3 Large Leaves Green Part 6255 Element 6269046 or 4106895 ×1
  • Plant, Bush 2 x 2 x 4 Green Part 6064 Element 6269009 or 606428 ×1
  • Plant, Flower 2 x 2 Leaves - Angular Green Part 4727 Element 472728 ×2
  • Plant, Flower 2 x 2 - Round [Open Stud] Red Part 4728 Element 472821 ×1
  • Plant, Flower 2 x 2 - Round [Open Stud] Yellow Part 4728 Element 472824 ×1

Bars, Ladders and Fences 4 pieces

  • Picket Fence 1 x 4 x 2 White Part 33303 Element 4141607 ×4

Windows and Doors 4 pieces

  • Door Frame 2 x 6 x 6 Freestyle Red Part 6235 Element 623521 or 75620 ×1
  • Window 2 x 4 x 3 Frame with Solid Studs Red Part 4132 Element 413221 ×1
  • Door 1 x 6 x 6 Freestyle White Part 600 Element 623401 ×1
  • Window 2 x 4 x 3 Pane White Part 4133 Element 4113220 or 413301 ×1

Baseplates 2 pieces

  • Baseplate 16 x 32 Green Part 3857 Element 4219615 or 274828 ×2

Bricks Special 2 pieces

  • Brick Special 2 x 4 with Pins Red Part 6249 Element 4143668 or 4107561 ×2

Minifigs 2 pieces

  • Juniors Midifig, Max, Blue Torso, Black Legs Blue Part 76519pr0002 ×1
  • Juniors Midifig, Tina, Orange Torso, Light Gray Legs Orange Part 76520pr0003 ×1

Gear Parts 1 piece

  • Playtable 40 x 64 with Handle and Two Bins Red Part 30341 ×1

Tiles Special 1 piece

  • Tile Special 1 x 2 with Handle Black Part 2432 Element 243226 ×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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