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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.

Level Four - Kit 11, World Architecture

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20210 Level Four - Kit 11, World Architecture

253 pieces in 71 part and color combinations, plus 1 minifigure.

The piece count includes the 5 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.

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

White 120 pieces

  • Arm Mechanical with 2 Clips [Battle Droid] White Part 30377 Element 6321345 or 4260649 ×2
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×4
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×2
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×3
  • Brick Arch 1 x 6 Raised Arch White Part 92950 Element 6601942 or 4620761 ×1
  • Brick Round 1 x 1 Open Stud White Part 3062b Element 6619283 or 306201 ×6
  • Brick Round 2 x 2 [Grill] White Part 92947 Element 6615536 or 4650644 ×10
  • Brick Special 1 x 1 with Headlight White Part 4070 Element 6548267 or 407001 ×4
  • Brick Special 1 x 2 with Groove White Part 4216 Element 6619288 or 4264360 ×14
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 ×6
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×9
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×6
  • Plate 1 x 6 White Part 3666 Element 6552107 or 6548265 ×2
  • Plate 1 x 8 White Part 3460 Element 6550141 or 346001 ×3
  • Plate 2 x 10 White Part 3832 Element 6552109 or 383201 ×2
  • Plate 2 x 2 Corner White Part 2420 Element 6548254 or 242051 ×6
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×1
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×1
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 ×17
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] White Part 4081b Element 6281990 or 4632566 ×4
  • Plate Special 1 x 2 with Door Rail White Part 32028 Element 6550168 or 4249563 ×12
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) White Part 87580 Element 6550157 or 6126046 ×1
  • Tap 1 x 1 without Hole in Spout White Part 4599b Element 459901 ×2
  • Tile 2 x 4 with Groove White Part 87079 Element 6548271 or 4560178 ×2

Black 49 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×8
  • Brick 1 x 4 Black Part 3010 Element 301026 ×3
  • Brick 2 x 4 Black Part 3001 Element 300126 ×2
  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Black Part 61409 Element 4541191 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 Also in Dark Blue ×2
  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×6
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Black Part 73983 Element 6102782 or 74011 ×1
  • Lever Small Base with Black Lever Black Part 298c02 Element 73587 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×7
  • Plate 1 x 4 Black Part 3710 Element 371026 ×3
  • Plate 1 x 8 Black Part 3460 Element 346026 ×1
  • Plate Special 2 x 2 with 2 Pin Holes Black Part 2817 Element 281726 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×2
  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×4
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×2
  • Tile 1 x 6 with Groove Black Part 6636 Element 663626 ×2
  • Turntable 4 x 4 Square Base, Locking Black Part 61485 Element 4517986 ×1

Dark Blue 28 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Blue Part 54200 Element 4504374 or 4502092 Also in Black ×7
  • Brick Sloped 45° 2 x 1 Double with Inside Stud Holder Dark Blue Part 3044c Element 6285562 or 6171926 ×1
  • Brick Sloped 45° 2 x 2 Dark Blue Part 3039 Element 4153653 ×4
  • Brick Sloped 45° 2 x 2 Double Convex Dark Blue Part 3045 Element 4196736 ×6
  • Brick Sloped 45° 2 x 4 Dark Blue Part 3037 Element 4578094 or 4249899 ×2
  • Plate 2 x 3 Dark Blue Part 3021 Element 6554192 or 4530028 ×8

Light Bluish Gray 26 pieces

  • Brick Special 1 x 1 Studs on 4 Sides Light Bluish Gray Part 4733 Element 4211511 ×1
  • Brick Special 1 x 2 with Masonry Brick Profile Light Bluish Gray Part 98283 Element 6000066 ×3
  • Dish 2 x 2 Inverted [Radar] Light Bluish Gray Part 4740 Element 4211512 ×1
  • Plate 1 x 10 Light Bluish Gray Part 4477 Element 4251149 or 4211495 ×2
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×4
  • Plate Special 1 x 2 [Side Handle Closed Ends] Light Bluish Gray Part 48336 Element 4244627 ×1
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×2
  • Technic Brick 1 x 4 [3 Pin Holes] Light Bluish Gray Part 3701 Element 4211441 ×4
  • Tile 1 x 2 with Groove Light Bluish Gray Part 3069b Element 4211414 ×6
  • Tile 1 x 8 with Groove Light Bluish Gray Part 4162 Element 4211481 ×2

Dark Red 11 pieces

  • Brick Round 1 x 1 Open Stud Dark Red Part 3062b Element 4539099 or 4183880 ×6
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Red Part 54200 Element 4539079 or 4531415 ×2
  • Plate 1 x 6 Dark Red Part 3666 Element 4539062 or 4164108 ×1
  • Plate Round 4 x 4 with Pin Hole Dark Red Part 60474 Element 6614381 or 4631233 ×1
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Dark Red Part 3794a Element 4176959 ×1

Dark Bluish Gray 6 pieces

  • Brick 1 x 3 Dark Bluish Gray Part 3622 Element 4211104 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Dark Bluish Gray Part 3040b Element 4211135 ×2
  • Brick Sloped 45° 2 x 2 Dark Bluish Gray Part 3039 Element 4211054 ×2

Flat Silver 5 pieces

  • Plate Round 1 x 1 with Solid Stud Flat Silver Part 6141 Element 4633691 ×5

Tan 5 pieces

  • Brick 1 x 6 Tan Part 3009 Element 4112982 or 300905 ×1
  • Cone 1 x 1 [Top Groove] Tan Part 59900 Element 4529237 ×1
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Tan Part 3794a Element 379405 ×3

Dark Green 2 pieces

  • Plate 6 x 10 Dark Green Part 3033 Element 4549214 ×2

Green 1 piece

  • Plant, Round 1 x 1 - 3 Bamboo Leaves Green Part 30176 Element 6270003 or 6248461 ×1

Minifigures 1 figure

  • MBA Level Four Kit 11 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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