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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.

Robot

Checking

40128 Robot

50 pieces in 28 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.

Show

Piece checklist

Light Bluish Gray 23 pieces

  • Brick 1 x 2 Light Bluish Gray Part 3004 Element 4211388 ×4
  • Brick Special 1 x 1 with Stud on 1 Side Light Bluish Gray Part 87087 Element 4558953 ×4
  • Brick Special 1 x 4 with 4 Studs on One Side Light Bluish Gray Part 30414 Element 4211636 ×2
  • Dish 2 x 2 Inverted [Radar] Light Bluish Gray Part 4740 Element 4211512 ×1
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×1
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×1
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×1
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×2
  • Plate Special 1 x 2 5.9mm Towball Socket Light Bluish Gray Part 14418 Element 6414556 or 6338163 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Light Bluish Gray Part 15573 Element 6066097 or 4211451 ×3
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Light Bluish Gray Part 87580 Element 6126082 or 4565393 ×1
  • Turntable 2 x 2 Plate - Top Light Bluish Gray Part 3679 Element 4540203 or 4495467 ×1

Dark Bluish Gray 9 pieces

  • Brick 1 x 1 Dark Bluish Gray Part 3005 Element 4211098 ×2
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×1
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×1
  • Plate Special 1 x 2 with 5.9mm Centre Side Towball Dark Bluish Gray Part 14417 Element 6414560 or 6338160 ×2
  • Plate Special 1 x 2 with Clip Horizontal on End Dark Bluish Gray Part 63868 Element 6336990 or 4581225 ×2
  • Tile 1 x 4 with Train Controls Print Dark Bluish Gray Part 2431pr0028 Element 6020825 or 4215740 ×1

Flat Silver 7 pieces

  • Equipment Winder Key [Toy] Flat Silver Part 98375 Element 6363150 or 6176749 1 spare in the box ×1
  • Plate Round 1 x 1 with Solid Stud Flat Silver Part 6141 Element 4633691 1 spare in the box ×5
  • Tile Special 1 x 2 Grille with Bottom Groove Flat Silver Part 2412b Element 4619636 ×1

Red 6 pieces

  • Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] Red Part 15672 Element 6053011 or 4603263 ×2
  • Plate 1 x 1 Red Part 3024 Element 302421 1 spare in the box ×2
  • Plate 1 x 3 Red Part 3623 Element 362321 ×2

Black 2 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×1
  • Turntable 2 x 2 Plate, Base Black Part 3680 Element 368076 or 368026 ×1

Trans-Light Blue 2 pieces

  • Tile Round 1 x 1 Trans-Light Blue Part 98138 Element 6514192 or 6274739 1 spare in the box ×2

Blue 1 piece

  • Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 1 spare in the box ×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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