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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.

United States Capitol Building

Checking

21030 United States Capitol Building

1,032 pieces in 99 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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Tiles 251 pieces

  • Tile 1 x 8 with 'United States Capitol Building' Print Black Part 4162pr0047 Element 6146728 ×1
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×17
  • Tile 1 x 1 with Groove Dark Bluish Gray Part 3070b Element 4210848 1 spare in the box ×46
  • Tile 1 x 2 with Groove Dark Bluish Gray Part 3069b Element 4211052 ×10
  • Tile 1 x 6 with Groove Dark Bluish Gray Part 6636 Element 4210651 ×4
  • Tile 2 x 4 with Groove Dark Bluish Gray Part 87079 Element 4560184 ×8
  • Tile 1 x 1 with Groove Dark Tan Part 3070b Element 6055172 2 spares in the box Also in Tan ×12
  • Tile 1 x 1 with Groove Light Bluish Gray Part 3070b Element 4211415 2 spares in the box ×12
  • Tile 1 x 2 with Groove Light Bluish Gray Part 3069b Element 4211414 ×14
  • Tile 1 x 6 with Groove Light Bluish Gray Part 6636 Element 4211549 ×7
  • Tile 1 x 8 with Groove Light Bluish Gray Part 4162 Element 4211481 ×5
  • Tile 1 x 3 Olive Green Part 63864 Element 6046903 ×8
  • Tile 1 x 6 with Groove Olive Green Part 6636 Element 6016484 ×4
  • Tile 1 x 2 with Groove Sand Green Part 3069b Element 4616578 or 4504803 ×28
  • Tile 2 x 4 with Groove Sand Green Part 87079 Element 4633693 ×10
  • Tile 1 x 1 with Groove Tan Part 3070b Element 4125253 2 spares in the box Also in Dark Tan ×12
  • Tile 1 x 1 with Groove White Part 3070b Element 6550138 or 307001 1 spare in the box ×19
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×18
  • Tile 1 x 3 White Part 63864 Element 6552134 or 6548270 ×6
  • Tile 1 x 6 with Groove White Part 6636 Element 6548296 or 663601 ×4
  • Tile 1 x 8 with Groove White Part 4162 Element 6552110 or 416201 ×4
  • Tile 2 x 2 Corner White Part 14719 Element 6550151 or 6058329 ×2

Plates 214 pieces

  • Plate 2 x 4 Black Part 3020 Element 302026 ×3
  • Plate 2 x 8 Black Part 3034 Element 303426 ×22
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 ×4
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×2
  • Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 ×4
  • Plate 3 x 3 Dark Bluish Gray Part 11212 Element 6039176 ×2
  • Plate 6 x 8 Dark Bluish Gray Part 3036 Element 4210794 ×6
  • Plate 8 x 16 Dark Bluish Gray Part 92438 Element 4654613 ×6
  • Plate 8 x 8 Dark Bluish Gray Part 41539 Element 4210802 ×2
  • Plate 1 x 1 Dark Tan Part 3024 Element 4549436 or 4497084 2 spares in the box Also in Tan ×2
  • Plate 1 x 10 Light Bluish Gray Part 4477 Element 4251149 or 4211495 ×3
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×17
  • Plate 1 x 3 Light Bluish Gray Part 3623 Element 4211429 or 3623194 ×8
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×4
  • Plate 1 x 6 Light Bluish Gray Part 3666 Element 4211438 ×10
  • Plate 1 x 8 Light Bluish Gray Part 3460 Element 4211425 ×15
  • Plate 2 x 10 Light Bluish Gray Part 3832 Element 4211462 ×4
  • Plate 2 x 2 Corner Light Bluish Gray Part 2420 Element 4211353 ×10
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×2
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×8
  • Plate 2 x 6 Light Bluish Gray Part 3795 Element 4211452 or 3795194 ×4
  • Plate 1 x 2 Sand Green Part 3023 Element 4655080 or 4642428 ×8
  • Plate 1 x 1 Tan Part 3024 Element 4159553 or 302405 1 spare in the box Also in Dark Tan ×2
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 1 spare in the box ×26
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×22
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×8
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×5
  • Plate 6 x 8 White Part 3036 Element 303651 or 303601 ×1
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×4

Bricks Special 184 pieces

  • Brick Special 1 x 1 Studs on 4 Sides Black Part 4733 Element 473326 ×4
  • Brick Special 1 x 1 with Headlight White Part 4070 Element 6548267 or 407001 ×178
  • Brick Special 1 x 1 with Stud on 1 Side White Part 87087 Element 6550190 or 4558952 ×2

Bricks Sloped 110 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Sand Green Part 54200 Element 4652205 2 spares in the box ×32
  • Brick Sloped 33° 3 x 1 Sand Green Part 4286 Element 4598531 or 4155045 ×36
  • Brick Sloped 33° 3 x 3 Double Convex Sand Green Part 3675 Element 4598532 or 4221752 ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) White Part 54200 Element 6550179 or 4504369 2 spares in the box ×10
  • Brick Sloped 30° 1 x 2 x 2/3 White Part 85984 Element 6550189 or 4547489 ×28

Technic Bricks 46 pieces

  • Technic Brick 1 x 1 with Pin Hole White Part 6541 Element 6609542 or 654101 ×28
  • Technic Brick 1 x 2 [2 Pin Holes] White Part 32000 Element 6564911 or 3200001 ×18

Bricks 43 pieces

  • Brick 1 x 2 Sand Green Part 3004 Element 4642425 or 4623925 ×4
  • Brick 1 x 1 x 3 White Part 14716 Element 6548277 or 6055541 ×2
  • Brick 1 x 3 White Part 3622 Element 6550143 or 362201 ×14
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×3
  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×3
  • Brick 1 x 8 White Part 3008 Element 6550134 or 300801 ×10
  • Brick 2 x 2 Corner White Part 2357 Element 6552088 or 6548253 ×4
  • Brick 2 x 6 White Part 2456 Element 6552122 or 4249698 ×3

Plates Round Curved and Dishes 42 pieces

  • Plate Round 6 x 6 with Hole Light Bluish Gray Part 11213 Element 6015349 ×1
  • Dish 6 x 6 Inverted (Radar) with Solid Studs Sand Green Part 44375b Element 6146199 ×2
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 1 spare in the box ×18
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) White Part 4032a Element 6601914 or 403201 ×7
  • Plate Round 4 x 4 with Pin Hole White Part 60474 Element 6564904 or 4515347 ×1
  • Plate Round 6 x 6 with Hole White Part 11213 Element 6601923 or 6109817 ×1
  • Plate Round Corner 3 x 3 White Part 30357 Element 6550165 or 4550745 ×8
  • Plate Round Corner 4 x 4 White Part 30565 Element 4178429 ×4

Plates Special 25 pieces

  • Plate Special 1 x 8 with Door Rail Light Bluish Gray Part 4510 Element 4211498 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Tan Part 15573 Element 6092587 ×4
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) White Part 15573 Element 6550152 or 6051511 ×18
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) White Part 18674 Element 6615555 or 6093053 ×1

Bars, Ladders and Fences 23 pieces

  • Fence Spindled 1 x 4 x 2 [4 Top Studs] White Part 15332 Element 6615529 or 6047813 ×15
  • Fence Spindled 4 x 4 x 2 Quarter Round with 3 Studs White Part 21229 Element 6146188 ×8

Bricks Round and Cones 23 pieces

  • Cone 1 x 1 [Top Groove] Dark Bluish Gray Part 59900 Element 4529240 ×1
  • Brick Round 1 x 1 Open Stud White Part 3062b Element 6619283 or 306201 ×12
  • Brick Round 2 x 2 [Grill] White Part 92947 Element 6615536 or 4650644 ×1
  • Brick Round 4 x 4 Centre Hole White Part 87081 Element 6619304 or 4558956 ×1
  • Brick Round Corner 3 x 3 x 2 Dome Top White Part 88293 Element 4586275 ×4
  • Brick Round Corner 4 x 4 Macaroni Wide with 3 Studs White Part 48092 Element 6550183 or 6337627 ×4

Tiles Round and Curved 22 pieces

  • Tile Round 1 x 1 Light Bluish Gray Part 98138 Element 6284071 or 4650260 1 spare in the box ×4
  • Tile Round 1 x 1 Olive Green Part 98138 Element 6284595 or 6047015 2 spares in the box ×18

Minifig Accessories 12 pieces

  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 White Part 64644 Element 6615569 or 6070327 2 spares in the box ×12

Bricks Curved 11 pieces

  • Brick Arch 1 x 3 White Part 4490 Element 6619289 or 4520970 ×3
  • Brick Curved 2 x 2 x 2/3 White Part 15068 Element 6552147 or 6047220 ×8

Minifigs 9 pieces

  • Minifig Trophy Statuette Dark Bluish Gray Part 90398 Element 6299494 or 6146192 1 spare in the box ×5
  • Minifig Trophy Statuette White Part 90398 Element 6551374 or 6299492 2 spares in the box ×4

Panels 8 pieces

  • Panel 1 x 1 x 1 Corner Light Bluish Gray Part 6231 Element 4215513 ×8

Plates Wedged 8 pieces

  • Wedge Plate 3 x 3 Cut Corner White Part 2450 Element 6601842 or 4280148 ×8

Tools 1 piece

  • Brick and Axle Separator v2.0 Orange Part 96874 Element 6240515 or 4654448 ×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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