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.

Concept Sampler Kit

Checking

2000404 Concept Sampler Kit

1,700 pieces in 71 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 800 pieces

  • Brick 2 x 4 Black Part 3001 Element 300126 ×30
  • Brick 2 x 2 x 3 Blue Part 30145 Element 6425989 or 4107573 ×20
  • Brick 2 x 2 Dark Turquoise Part 3003 Element 6314091 or 4120399 ×80
  • Brick 2 x 4 Dark Turquoise Part 3001 Element 6249422 or 6235115 ×100
  • Brick 1 x 1 with Simple Eye Black and White Print Green Part 3005pr9996 Element 4107722 ×20
  • Brick 2 x 4 Green Part 3001 Element 4106356 or 300128 ×30
  • Brick 8 x 8 Light Lilac Part 4201 Element 4268413 ×10
  • Brick 1 x 2 Medium Green Part 3004 Element 4129824 ×40
  • Brick 8 x 8 Medium Green Part 4201 Element 4181130 or 4129854 ×10
  • Brick 2 x 4 Orange Part 3001 Element 4153827 or 4119641 ×80
  • Brick 2 x 4 Red Part 3001 Element 300121 ×30
  • Brick 2 x 4 Sand Green Part 3001 Element 6075626 or 4642412 ×40
  • Brick 2 x 2 without Inside Ridges Trans-Dark Blue Part 6223 Element 6514091 or 6238043 ×80
  • Brick 2 x 2 without Inside Ridges Trans-Green Part 6223 Element 6514090 or 6219774 ×80
  • Brick 1 x 1 with Simple Black Eye with White Pupil Print White Part 3005pr0003 Element 4569080 ×20
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×20
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×20
  • Brick 1 x 1 with Simple Black Eye with White Pupil Print Yellow Part 3005pr0003 Element 4569076 ×40
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×10
  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×10
  • Brick 2 x 2 with Eye with White Print on Two Sides, White Circle in Pupil, Offset Yellow Part 3003pr0001 Element 4569077 ×10
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×10
  • Brick 2 x 4 with Smile and Frown Print on Opposite Sides Yellow Part 3001pr0043 Element 80141 ×10

Plates 140 pieces

  • Plate 2 x 2 Black Part 3022 Element 302226 ×30
  • Plate 2 x 8 Black Part 3034 Element 303426 ×10
  • Plate 4 x 8 Brown Part 3035 Element 4129998 or 303525 ×10
  • Plate 2 x 6 Green Part 3795 Element 379528 ×10
  • Plate 2 x 6 Orange Part 3795 Element 4121741 ×30
  • Plate 4 x 4 Orange Part 3031 Element 6384647 or 4243825 ×20
  • Plate 2 x 3 Red Part 3021 Element 302121 ×10
  • Plate 2 x 4 Red Part 3020 Element 302021 ×10
  • Plate 2 x 16 Yellow Part 4282 Element 6207377 or 428224 ×10

Bricks Curved 120 pieces

  • Brick Arch 1 x 6 x 2 Curved Top Blue Part 6183 Element 618323 ×20
  • Brick Curved 2 x 3 Green Part 6215 Element 621528 ×20
  • Brick Curved 2 x 3 Tan Part 6215 Element 4143362 or 4112588 ×60
  • Brick Curved 2 x 3 Yellow Part 6215 Element 621524 ×20

Plates Special 80 pieces

  • Plate Special 2 x 2 with Towball Black Part 3729 Element 4124111 or 4107856 ×40
  • Plate Special 2 x 2 with Towball Socket, Short, Flattened with Holes and Axle Hole in Center Black Part 63082 Element 6273226 or 4529064 ×30
  • Plate Special Round 8 x 8 with 2 x 2 Center Studs with Groove Magenta Part 6177b Element 6081485 or 4142680 ×10

Bricks Sloped 70 pieces

  • Brick Sloped 45° 2 x 1 with Bottom Pin Orange Part 3040b Element 4121967 or 4118901 ×20
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Orange Part 3747a Element 4121737 ×10
  • Brick Sloped 45° 2 x 2 Trans-Neon Green Part 3039 Element 4140789 ×40

Bricks Round and Cones 60 pieces

  • Brick Round 1 x 1 Open Stud White Part 3062b Element 6619283 or 306201 ×40
  • Cone 1 x 1 [No Top Groove] White Part 4589 Element 458901 ×20

Bricks Special 60 pieces

  • Brick Special 2 x 2 with 2 Pins and Axle Hole Green Part 30000 Element 4141647 ×40
  • Brick Special 2 x 4 with Pins Light Gray Part 6249 Element 4143670 or 4107104 ×20

Duplo, Quatro and Primo 60 pieces

  • Duplo Brick 2 x 2 Medium Dark Pink Part 3437 Element 4143061 ×20
  • Duplo Brick 2 x 4 Trans-Light Blue Part 3011 Element 6507904 or 6202108 ×20
  • Duplo Brick 2 x 2 x 2 White Part 31110 Element 4143308 ×20

Minifig Accessories 50 pieces

  • Money / Coin with "10" Sans-serif Type Chrome Gold Part 57503 ×10
  • Money / Coin with "20" Sans-serif Type Chrome Gold Part 57504 ×10
  • Money / Coin with "30" Sans-serif Type Chrome Gold Part 57505 ×10
  • Money / Coin with "40" Sans-serif Type Chrome Gold Part 57506 ×10
  • Equipment Whip [aka Plant Vine] Green Part 2488 Element 6268825 or 6055462 ×10

Plates Wedged 40 pieces

  • Wedge Plate 7 x 6 Boat Bow with Stud Notches Black Part 50303 Element 4550190 or 4239365 ×20
  • Wedge Plate 3 x 6 Cut Corners Sand Green Part 2419 Element 4143042 ×20

Wheels and Tyres 40 pieces

  • Tyre Offset Tread 24 x 8 Black Part 3483 Element 4501048 or 348326 ×40

Minifig Headwear 20 pieces

  • Top Hat Black Part 3878 Element 4569092 or 4105175 ×10
  • Helmet, Standard Blue Part 2446 Element 6013414 or 4569132 ×10

Panels 20 pieces

  • Panel 1 x 4 x 3 [Hollow Studs] Trans-Dark Blue Part 4215b Element 4118738 ×20

String, Bands and Reels 20 pieces

  • String with End Studs and Minifig Grips 21L Green Part 14210 Element 6411972 or 6195813 ×20

Technic Special 20 pieces

  • Technic Link 1 x 16 Light Gray Part 2637 Element 4106932 or 263702 ×20

Tiles Special 20 pieces

  • Tile Special 2 x 2 with Top Pin Yellow Part 2460 Element 246024 ×20

Windscreens and Fuselage 20 pieces

  • Windscreen 2 x 4 x 2 Trans-Clear Part 3823 Element 6581801 or 6253681 ×10
  • Windscreen 2 x 4 x 2 Trans-Light Blue Part 3823 Element 6581802 or 6253682 ×10

Bars, Ladders and Fences 10 pieces

  • Ladder 14 x 2.5 White Part 4207 Element 420751 or 420701 ×10

Minifig Heads 10 pieces

  • Minifig Head Standard Grin Print [Blocked Open Stud] Yellow Part 3626bpr0001 Element 6020398 ×10

Minifig Lower Body 10 pieces

  • Hips and White Legs White Part 970c27 Element 6551364 or 4570434 ×10

Minifig Upper Body 10 pieces

  • Torso, Red Arms, Yellow Hands [Plain] Red Part 973c22h01 Element 4582740 or 4275872 ×10

Plants & Trees 10 pieces

  • Plant, Bush 2 x 2 x 4 Green Part 6064 Element 6269009 or 606428 ×10

Technic Axles 10 pieces

  • Technic Axle 12 Red Part 3708 Element 6147702 or 4125190 ×10

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.