Free tool

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.

Special Elements for Mini Sets

Checking

9954 Special Elements for Mini Sets

55 pieces in 23 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

Technic Pins 14 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×6
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×4
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×4

Technic Bushes 11 pieces

  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×7
  • Technic Bush 1/2 Toothed Type II [X Opening] Light Gray Part 4265b Element 4100501 or 657702 ×4

Plates 8 pieces

  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×2
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×2
  • Plate 1 x 3 Yellow Part 3623 Element 362324 ×2
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×2

String, Bands and Reels 6 pieces

  • Rubber Band Large [Square Cross Section] Black Part 70158 ×4
  • Rubber Band Medium (Square Cross Section) Thin Cut Black Part 70012 Element 70012 ×2

Technic Axles 4 pieces

  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×1
  • Technic Axle 3 with Stud Dark Gray Part 6587 Element 4113884 or 658727 ×1

Technic Beams 2 pieces

  • Technic Beam 1 x 4 Thin with Stud Connector Light Gray Part 2825 Element 4107133 or 282502 ×2

Technic Gears 2 pieces

  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 ×2

Tiles 2 pieces

  • Tile 2 x 2 with Groove Yellow Part 3068b Element 6388487 or 306824 ×2

Bricks Round and Cones 1 piece

  • Brick Round 2 x 2 with Axle Hole Red Part 3941 Element 614321 or 394121 ×1

Plates Special 1 piece

  • Technic Plate 2 x 4 [3 Holes] Yellow Part 3709 Element 370924 ×1

Supports, Girders and Cranes 1 piece

  • Hook, Plate 1 x 2 with Crane Hook Left Light Gray Part 3127 Element 312702 ×1

Technic Bricks 1 piece

  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×1

Technic Connectors 1 piece

  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Light Gray Part 6553 Element 655302 ×1

Technic Steering, Suspension and Engine 1 piece

  • Technic Engine Crankshaft Center Light Gray Part 2854 Element 285402 ×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.