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The Workshop Sheet 10 of 22

LEGO Missing Piece Checker

Enter a set number, mark each piece found or missing, and leave with a list of what is missing, the element IDs LEGO asks for and links to buy the parts. It is free and needs no account. Rule out the usual hiding places first.

A World of LEGO Mosaic 9 in 1

Checking

6163 A World of LEGO Mosaic 9 in 1

598 pieces in 38 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.

  • Brick 1 x 1 Black ×48 Dark Bluish Gray ×26 Black is darker than Dark Bluish Gray.
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Piece checklist

Bricks 543 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 Also in Dark Bluish Gray ×48
  • Brick 1 x 1 Blue Part 3005 Element 300523 ×77
  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×1
  • Brick 1 x 1 Dark Bluish Gray Part 3005 Element 4211098 Also in Black ×26
  • Brick 1 x 1 Dark Pink Part 3005 Element 4492224 or 4245297 ×19
  • Brick 1 x 1 Green Part 3005 Element 300528 ×35
  • Brick 1 x 1 Lime Part 3005 Element 4220634 or 4122446 ×40
  • Brick 1 x 1 Medium Blue Part 3005 Element 4179830 or 4165452 ×52
  • Brick 1 x 1 Orange Part 3005 Element 4173805 or 4119645 ×47
  • Brick 1 x 1 Red Part 3005 Element 300521 ×84
  • Brick 1 x 1 Reddish Brown Part 3005 Element 4211242 ×20
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×38
  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×56

Bricks Sloped 17 pieces

  • Brick Sloped 33° 3 x 1 Black Part 4286 Element 428626 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Blue Part 3660 Element 366023 ×1
  • Brick Sloped 33° 3 x 1 Red Part 4286 Element 428621 ×2
  • Brick Sloped 45° 2 x 1 Double with Ovoid Bottom Pin Red Part 3044b Element 304421 ×4
  • Brick Sloped 45° 2 x 1 with Bottom Pin Red Part 3040b Element 4121934 or 304021 ×8

Plates Round Curved and Dishes 12 pieces

  • Dish 4 x 4 Inverted [Radar] Black Part 3960 Element 396026 ×2
  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 1 spare in the box ×3
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×1
  • Plate Round 1 x 1 with Solid Stud Metallic Silver Part 6141 Element 51809301 or 6546105 1 spare in the box ×2
  • Plate Round 1 x 1 with Solid Stud Red Part 6141 Element 614121 1 spare in the box ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Neon Green Part 6141 Element 6240223 or 3005749 1 spare in the box ×2

Plates Special 11 pieces

  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Black Part 3839b Element 383926 ×1
  • Plate Special 3 x 2 with Rounded End, Hole Black Part 3176 Element 317676 or 317626 ×1
  • Plate Special 3 x 2 with Rounded End, Hole Blue Part 3176 Element 317673 or 317623 ×1
  • Plate Special 1 x 1 with Tooth White Part 49668 Element 6601935 or 4224792 ×8

Bricks Special 3 pieces

  • Brick Special 1 x 1 with Studs on 2 Sides Black Part 47905 Element 4214559 ×2
  • Brick Special 1 x 1 with Headlight Blue Part 4070 Element 407023 ×1

Baseplates 2 pieces

  • Baseplate 16 x 16 Trans-Clear Part 3867 Element 4497482 ×2

Bricks Curved 2 pieces

  • Brick Curved 6 x 1 Black Part 42022 Element 4160393 ×2

Bricks Round and Cones 2 pieces

  • Brick Round 2 x 2 Dome Top, Blocked Open Stud, Bottom Axle Holder White Part 30367b ×2

Hinges, Arms and Turntables 2 pieces

  • Hinge Brick 1 x 2 Base White Part 3937 Element 6619287 or 393701 ×1
  • Hinge Brick 1 x 2 Top Plate Thin White Part 3938 Element 393801 ×1

Plates 2 pieces

  • Plate 1 x 4 Red Part 3710 Element 371021 ×2

Bars, Ladders and Fences 1 piece

  • Antenna 1 x 4 with Rounded Top Black Part 3957a ×1

Tiles Special 1 piece

  • Tile Special 1 x 2 Grille with Bottom Groove White Part 2412b Element 6601902 or 241201 ×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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