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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.

Mini Sub

Checking

30042 Mini Sub

32 pieces in 19 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

Black 10 pieces

  • Arm Mechanical with 2 Clips [Battle Droid] Black Part 30377 Element 6330086 or 4223247 1 spare in the box ×3
  • Bar 1 x 4 x 2 with Studs Black Part 4083 Element 408326 ×2
  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×1
  • Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Black Part 4349 Element 434926 ×1
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Black Part 6019 Element 601976 or 601926 ×2
  • Propeller 3 Blade 3 Diameter with Axle Cross Black Part 6041 Element 604126 ×1

Lime 6 pieces

  • Minifig Footwear Flipper [Thin] Lime Part 59275 ×2
  • Plate Round 1 x 1 with Solid Stud Lime Part 6141 Element 4183133 1 spare in the box ×4

Red 6 pieces

  • Brick Round 1 x 1 Open Stud Red Part 3062b Element 306221 ×4
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×2

Dark Bluish Gray 5 pieces

  • Handlebars Dark Bluish Gray Part 30031 Element 4261908 or 4210644 ×1
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] Dark Bluish Gray Part 4085c Element 4210632 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] Dark Bluish Gray Part 2540 Element 4210660 ×1

Trans-Clear 2 pieces

  • Equipment Crystal Ball Globe 2 x 2 x 2 Trans-Clear Part 30106 Element 6507889 or 6274736 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Clear Part 6141 Element 6514052 or 6240030 1 spare in the box Also in White ×1

Light Bluish Gray 1 piece

  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 1 spare in the box ×1

Trans-Yellow 1 piece

  • Rock 1 x 1 Jewel / Gem 24 Facet Trans-Yellow Part 30153 Element 6513974 or 6247795 ×1

White 1 piece

  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 1 spare in the box Also in Trans-Clear ×1

Minifigures 1 figure

  • Lance Spears, Trans-Bright Green Visor 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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