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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.

Sungnyemun

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21016 Sungnyemun

325 pieces in 50 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

Light Bluish Gray 115 pieces

  • Brick 1 x 4 Light Bluish Gray Part 3010 Element 4211394 ×4
  • Brick Arch 1 x 4 Light Bluish Gray Part 3659 Element 4211435 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Light Bluish Gray Part 54200 Element 4521921 or 4244372 1 spare in the box ×12
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Light Bluish Gray Part 73983 Element 6102769 or 4219256 ×2
  • Panel 1 x 1 x 1 Corner Light Bluish Gray Part 6231 Element 4215513 ×4
  • Panel 1 x 2 x 1 [Square Corners] Light Bluish Gray Part 4865a Element 4211515 ×2
  • Panel 1 x 4 x 1 with Rounded Corners [Thick Wall] Light Bluish Gray Part 43337 Element 4211769 ×6
  • Plate 1 x 1 Light Bluish Gray Part 3024 Element 4211399 ×14
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×16
  • Plate 1 x 3 Light Bluish Gray Part 3623 Element 4211429 or 3623194 ×14
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×10
  • Plate 1 x 6 Light Bluish Gray Part 3666 Element 4211438 ×2
  • Plate 1 x 8 Light Bluish Gray Part 3460 Element 4211425 ×2
  • Plate 2 x 6 Light Bluish Gray Part 3795 Element 4211452 or 3795194 ×2
  • Plate 4 x 8 Light Bluish Gray Part 3035 Element 4211407 ×5
  • Plate 6 x 6 Light Bluish Gray Part 3958 Element 4211474 ×2
  • Tile 1 x 1 with Groove Light Bluish Gray Part 3070b Element 4211415 1 spare in the box ×10
  • Tile 1 x 8 with Groove Light Bluish Gray Part 4162 Element 4211481 ×2
  • Tile 2 x 2 with Groove Light Bluish Gray Part 3068b Element 4211413 ×4

Dark Bluish Gray 61 pieces

  • Hinge Brick 1 x 2 Base Dark Bluish Gray Part 3937 Element 4211066 ×2
  • Plate 1 x 1 Dark Bluish Gray Part 3024 Element 4210719 ×24
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×9
  • Plate 2 x 10 Dark Bluish Gray Part 3832 Element 4210678 Also in Black ×3
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×4
  • Plate 4 x 12 Dark Bluish Gray Part 3029 Element 4210706 ×1
  • Plate Special 1 x 2 Side Handle [Free Ends] Dark Bluish Gray Part 2540 Element 4210660 ×18

Black 58 pieces

  • Cone 1 x 1 [Top Groove] Black Part 59900 Element 4529236 ×2
  • Plate 2 x 10 Black Part 3832 Element 383226 Also in Dark Bluish Gray ×9
  • Plate 2 x 2 Black Part 3022 Element 302226 ×4
  • Plate 2 x 6 Black Part 3795 Element 379526 ×13
  • Plate 2 x 8 Black Part 3034 Element 303426 ×3
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Black Part 6019 Element 601976 or 601926 ×9
  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) Black Part 3794b Element 379426 ×6
  • Tile 1 x 3 Black Part 63864 Element 4558170 ×4
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×4
  • Tile 1 x 8 with "Sungnyemun" Print Black Part 4162pr0022 Element 6024587 ×1
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×3

Dark Green 34 pieces

  • Plate 1 x 2 Dark Green Part 3023 Element 6618076 or 6013797 ×10
  • Plate 1 x 6 Dark Green Part 3666 Element 6618082 or 4245566 ×4
  • Plate 2 x 3 Dark Green Part 3021 Element 6013801 or 4650244 ×2
  • Plate 2 x 4 Dark Green Part 3020 Element 6618075 or 4586057 ×6
  • Tile 1 x 4 with Groove Dark Green Part 2431 Element 4543949 or 4248267 ×10
  • Wedge Plate 4 x 2 Left Dark Green Part 41770 Element 4648340 ×1
  • Wedge Plate 4 x 2 Right Dark Green Part 41769 Element 6214291 or 4648342 ×1

White 29 pieces

  • Hinge Brick 2 x 2 Top Plate Thin White Part 6134 Element 6548272 or 4612342 ×2
  • Plate 2 x 10 White Part 3832 Element 6552109 or 383201 ×1
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 1 spare in the box ×24
  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) White Part 3794b ×2

Dark Red 18 pieces

  • Plate 1 x 2 Dark Red Part 3023 Element 4539097 or 4162582 ×18

Dark Tan 10 pieces

  • Plate 1 x 2 Dark Tan Part 3023 Element 4528604 or 4497082 ×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.

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