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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.

Shrunken Headquarters

Checking

30378 Shrunken Headquarters

44 pieces in 25 part and color combinations, plus 1 minifigure.

The official piece count includes the 4 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.

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Piece checklist

Plates Special 8 pieces

  • Plate Special 2 x 2 with Wheel Holders Black Part 4600 Element 460026 ×3
  • Plate Special 1 x 2 with 5.9mm Centre Side Towball Dark Bluish Gray Part 14417 Element 6414560 or 6338160 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Light Bluish Gray Part 15573 Element 6066097 or 4211451 ×1
  • Plate Special 1 x 2 with Pin Hole Underneath Light Bluish Gray Part 18677 Element 6168633 or 6089147 ×2
  • Plate Special 2 x 2 with Towball Socket, Short, Flattened with Holes and Axle Hole in Center Light Bluish Gray Part 63082 Element 6273227 or 4530469 ×1

Wheels and Tyres 8 pieces

  • Wheel 14mm D. x 9.9mm with Centre Groove, Fake Bolts and 6 Spokes Light Bluish Gray Part 11208 Element 6029209 ×6
  • Wheel 18 x 14 with Pin Hole, Fake Bolts and Shallow Spokes Light Bluish Gray Part 55981 Element 6109684 or 4299119 ×2

Technic Pins 5 pieces

  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×2
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×3

Bricks Round and Cones 4 pieces

  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×1
  • Brick Round 1 x 1 Open Stud Trans-Light Blue Part 3062b Element 6514238 or 6238677 ×3

Plates 4 pieces

  • Plate 2 x 4 Black Part 3020 Element 302026 ×2
  • Plate 2 x 3 Dark Purple Part 3021 Element 4225142 ×2

Technic Connectors 3 pieces

  • Technic Axle and Pin Connector Perpendicular Double Split Black Part 41678 Element 4162857 ×1
  • Technic Pin Connector Round 1L [Beam] Black Part 18654 Element 6121485 1 spare in the box ×2

Bricks Curved 2 pieces

  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Bluish Gray Part 11477 Element 6029948 ×1
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Purple Part 11477 Element 6057390 ×1

Plates Round Curved and Dishes 2 pieces

  • Plate Round 1 x 1 with Solid Stud Yellow Part 6141 Element 614124 1 spare in the box ×2

Technic Beams 2 pieces

  • Technic Beam 1 x 3 Thick Dark Bluish Gray Part 32523 Element 32523199 or 4210751 ×2

Bricks Special 1 piece

  • Brick Special 1 x 2 with 2 Pins, Round Pin Holes Dark Bluish Gray Part 30526 Element 4210697 ×1

Minifig Shields, Weapons, & Tools 1 piece

  • Weapon Sword / Greatsword Pointed with Thick Crossguard Pearl Titanium Part 18031 Element 6093534 ×1

Projectiles / Launchers 1 piece

  • Launcher, 1 x 4 with 1 x 2 Plate with Pin Hole and Bucket (Catapult) Dark Brown Part 88289 Element 4568951 ×1

Technic Axles 1 piece

  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×1

Tiles Special 1 piece

  • Tile Special 1 x 1 with Clip with Rounded Edges Black Part 15712 Element 6335388 or 6066102 ×1

Transportation - Land 1 piece

  • Handlebars Dark Bluish Gray Part 30031 Element 4261908 or 4210644 ×1

Minifigures 1 figure

  • Shrunken 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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