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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.

Level One - Kit 3, Robot Designer

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20202 Level One - Kit 3, Robot Designer

155 pieces in 57 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

Black 55 pieces

  • Bar 1 x 8 with Brick 1 x 2 Curved Top End (Axle Holder Inside Small End) Black Part 30359b Element 4164067 ×4
  • Bracket 1 x 2 - 2 x 2 Black Part 44728 Element 6117973 or 6048855 ×5
  • Brick Arch 1 x 3 x 2 Curved Top Black Part 6005 Element 4618880 or 4188168 ×2
  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×6
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 1 spare in the box ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Black Part 3040b Element 4121966 or 304026 ×2
  • Brick Sloped 65° 2 x 1 x 2 Black Part 60481 Element 4515373 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×2
  • Brick Special 1 x 1 Studs on 4 Sides Black Part 4733 Element 473326 ×1
  • Brick Wedged, Angled 3 x 2 Left Black Part 6565 Element 4527766 or 656526 ×1
  • Brick Wedged, Angled 3 x 2 Right Black Part 6564 Element 4526931 or 656426 ×1
  • Brick Wedged, Curved 6 x 2 Left, Inner Ridges Black Part 41748 Element 4160130 ×1
  • Brick Wedged, Curved 6 x 2 Right, Inner Ridges Black Part 41747 Element 4160108 ×1
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Black Part 73983 Element 6102782 or 74011 ×4
  • Hinge Plate 1 x 8 Locking with Angled Side Extensions, Rounded Plate Underside, 9 Teeth Black Part 30407 Element 4192456 ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 ×5
  • Plate 2 x 2 Black Part 3022 Element 302226 ×3
  • Tap 1 x 1 without Hole in Spout Black Part 4599b Element 459926 ×2
  • Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole Black Part 92013 Element 4619763 ×6
  • Tile 1 x 2 with Avionics Copper, Red & Silver Controls Print Black Part 3069bpr0070 Element 6021512 or 4162982 ×1
  • Tile Special 1 x 1 with Clip with Rounded Tips Black Part 12825 Element 6030718 ×2

Lime 33 pieces

  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Lime Part 6091 Element 6411328 or 4212446 ×4
  • Brick Curved 4 x 1 No Studs [Stud Holder with Asymmetric Ridges] Lime Part 61678 Element 4537927 ×4
  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Lime Part 61409 Element 6370977 or 4540385 ×2
  • Plate 1 x 2 Lime Part 3023 Element 4164037 or 4122439 ×6
  • Plate 1 x 4 Lime Part 3710 Element 4187743 or 4122441 ×3
  • Plate 1 x 6 Lime Part 3666 Element 4534665 or 4529160 ×2
  • Plate 2 x 2 Lime Part 3022 Element 4613977 or 4537937 ×1
  • Plate Round 1 x 1 with Solid Stud Lime Part 6141 Element 4183133 1 spare in the box ×4
  • Tile 1 x 4 with Groove Lime Part 2431 Element 4164021 ×2
  • Tile 2 x 2 with Groove Lime Part 3068b Element 4518611 or 4184857 ×5

Dark Purple 14 pieces

  • Plate 2 x 3 Dark Purple Part 3021 Element 4225142 ×4
  • Plate Round 1 x 1 with Solid Stud Dark Purple Part 6141 Element 4566522 1 spare in the box ×10

Light Bluish Gray 14 pieces

  • Bracket 5 x 2 x 2 1/3 with Holes, Smooth Bottom Light Bluish Gray Part 6087 Element 4258455 ×2
  • Brick 1 x 2 Light Bluish Gray Part 3004 Element 4211388 ×1
  • Hinge Plate 1 x 2 Locking with 1 Finger on Side, with Groove Light Bluish Gray Part 44567a Element 4211814 ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Bluish Gray Part 4032a Element 4211475 ×2
  • Plate Special 1 x 2 with Clips Horizontal [Thick U-Clips] Light Bluish Gray Part 60470a Element 4537900 ×1
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Light Bluish Gray Part 60478 Element 4515369 ×2
  • Plate Special 1 x 2, Top Clip [Split] Light Bluish Gray Part 92280 Element 4598526 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Light Bluish Gray Part 2412b Element 4211350 ×2

Metallic Silver 11 pieces

  • Cone 1 x 1 [Top Groove] Metallic Silver Part 59900 Element 6051385 or 4529351 ×4
  • Headwear Accessory Visor with Horizontal Slit Metallic Silver Part 87777 Element 6051390 or 4569374 ×1
  • Plate Round 1 x 1 with Solid Stud Metallic Silver Part 6141 Element 51809301 or 6546105 1 spare in the box ×6

Green 8 pieces

  • Brick Round 1 x 1 Open Stud Green Part 3062b Element 306228 ×4
  • Plate 2 x 4 Green Part 3020 Element 302028 ×4

White 8 pieces

  • Brick Round 1 x 1 Open Stud White Part 3062b Element 6619283 or 306201 ×4
  • Brick Special 1 x 2 with Handle White Part 30236 Element 4140626 ×2
  • Cone 1 x 1 [Top Groove] White Part 59900 Element 6601844 or 4518400 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) White Part 4032a Element 6601914 or 403201 ×1

Dark Bluish Gray 5 pieces

  • Technic Brick Special 2 x 2 with 10.2mm Balls [Center Mold Indention] Dark Bluish Gray Part 57908 Element 4498096 ×1
  • Technic Brick Special 2 x 2 with Solid Ball and Axle Hole Dark Bluish Gray Part 57909a ×4

Trans-Light Blue 3 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Light Blue Part 6141 Element 6514058 or 6240225 1 spare in the box ×2
  • Windscreen 6 x 4 x 2 1/3 Bubble Canopy with Handle Trans-Light Blue Part 87752 Element 6507953 or 6254264 ×1

Trans-Red 2 pieces

  • Tile 1 x 1 with Groove Trans-Red Part 3070b Element 6581817 or 6254248 1 spare in the box ×2

Flat Silver 1 piece

  • Helmet, Standard Flat Silver Part 2446 Element 4632099 ×1

Trans-Neon Green 1 piece

  • Antenna 1 x 4 with Rounded Top Trans-Neon Green Part 3957a ×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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