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.

Helicopter

Checking

412402 Helicopter

56 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

Technic Connectors 11 pieces

  • Technic Axle Connector Hub with 3 Axles at 120° Black Part 57585 Element 6390386 ×1
  • Technic Axle Connector with Axle Hole [Reinforced] Black Part 42135 Element 6331716 ×2
  • Technic Axle and Pin Connector Angled #6 - 90° Bright Green Part 32014 Element 6476581 ×2
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Dark Bluish Gray Part 42003 Element 6273715 or 4210857 ×4
  • Technic Pin Connector Hub with 1 Axle Dark Bluish Gray Part 22961 Element 6135014 ×2

Technic Axles 10 pieces

  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×5
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×2
  • Technic Axle 3 with Stop Reddish Brown Part 24316 Element 6135494 ×1
  • Technic Axle 5 Yellow Part 32073 Element 6130008 ×1

Technic Beams 9 pieces

  • Technic Beam 1 x 4 Thin with Stud Connector Black Part 2825 Element 6331570 or 4107136 ×2
  • Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin Black Part 32250 Element 6327162 or 4128557 ×2
  • Technic Beam 1 x 9 Bent (6 - 4) Thick Bright Green Part 6629 Element 6476570 ×1
  • Technic Beam 1 x 7 Thick Reddish Orange Part 32524 Element 6483774 ×1
  • Technic Beam 1 x 5 Thin with Axle Holes on Ends White Part 11478 Element 6360069 or 6259826 ×3

Wheels and Tyres 6 pieces

  • Tyre 14 x 6 Solid Smooth Black Part 50951 Element 4246901 ×3
  • Wheel 11 x 8 with Center Groove Light Bluish Gray Part 42610 Element 4211758 ×3

Technic Pins 5 pieces

  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Dark Bluish Gray Part 11214 Element 6015356 ×1
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×3
  • Technic Axle Pin 3L without Friction Ridges and 2L Axle White Part 65249 Element 6289797 ×1

Technic Bushes 4 pieces

  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced White Part 32123b Element 6634562 or 6360263 ×4

Technic Gears 4 pieces

  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×3
  • Technic Gear 20 Tooth Bevel Tan Part 32198 Element 6031962 or 4514557 ×1

Technic Special 3 pieces

  • Technic Rotor Blade Small with Hole and Axle Connector End Dark Bluish Gray Part 99012 Element 6271639 or 4651820 ×3

String, Bands and Reels 2 pieces

  • Chain 16L [21 Links] Dark Bluish Gray Part 60169 Element 6258887 or 4516456 ×1
  • String Reel 2 x 2 Drum with Stud Light Bluish Gray Part 78333 Element 6343889 ×1

Technic Steering, Suspension and Engine 1 piece

  • Technic Steering Arm with 2 Pins Black Part 32069 Element 6278276 or 4114671 ×1

Transportation - Sea and Air 1 piece

  • Propeller 3 Blades 5 Diameter, Pin Hole Black Part 92842 Element 6360206 or 4599984 ×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.