BlockTalk Find Your Set

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.

Go-Cart

Checking

1972 Go-Cart

98 pieces in 35 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

Plates 21 pieces

  • Plate 1 x 2 Blue Part 3023 Element 302323 ×2
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×4
  • Plate 2 x 8 Blue Part 3034 Element 303423 ×1
  • Plate 6 x 6 Blue Part 3958 Element 4199519 or 395823 ×1
  • Plate 2 x 3 Light Gray Part 3021 Element 302102 ×2
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×3
  • Plate 1 x 3 Red Part 3623 Element 362321 ×3
  • Plate 1 x 4 Red Part 3710 Element 371021 ×2
  • Plate 2 x 3 Red Part 3021 Element 302121 ×3

Wheels and Tyres 17 pieces

  • Tyre Offset Tread 24 x 8 Black Part 3483 Element 4501048 or 348326 ×8
  • Technic Wedge Belt Wheel [aka Pulley] Light Gray Part 4185 Element 4100502 or 418502 ×1
  • Wheel with Split Axle hole Light Gray Part 3482 Element 348202 ×8

Technic Bushes 13 pieces

  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×8
  • Technic Bush 1/2 Toothed Type I [+ Opening] Light Gray Part 4265a Element 426502 ×5

Technic Axles 9 pieces

  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×1
  • Technic Axle 4 Black Part 3705 Element 370526 ×4
  • Technic Axle 6 Black Part 3706 Element 370626 ×2
  • Technic Axle 8 Black Part 3707 Element 370726 ×2

Technic Connectors 8 pieces

  • Technic Axle and Pin Connector Light Gray Part 3651 Element 4105243 or 365102 ×8

Technic Bricks 7 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Blue Part 3700 Element 370023 ×3
  • Technic Brick 1 x 6 [5 Pin Holes] Blue Part 3894 Element 389423 ×2
  • Technic Brick 1 x 8 [7 Pin Holes] Blue Part 3702 Element 370223 ×2

Hinges, Arms and Turntables 4 pieces

  • Hinge Brick 1 x 2 Base Light Gray Part 3937 Element 393702 ×1
  • Hinge Brick 1 x 2 Top Plate Thin Light Gray Part 3938 Element 393802 ×1
  • Hinge Plate 1 x 2 with 2 Fingers and Solid Studs Red Part 4276a ×1
  • Hinge Plate 1 x 2 with 3 Fingers [Solid Studs] Red Part 4275a ×1

Technic Pins 4 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×4

Technic Special 3 pieces

  • Technic Plate 1 x 8 with Toothed Ends Light Gray Part 4442 Element 444252 or 444202 ×3

Minifig Shields, Weapons, & Tools 2 pieces

  • Weapon Gun / Torch (Space) [with Grooves] Light Gray Part 3959 Element 4254948 or 395952 ×2

Plates Special 2 pieces

  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Light Gray Part 3794a Element 379402 ×2

Technic Gears 2 pieces

  • Technic Gear 16 Tooth with Round Holes [Old Style] Light Gray Part 4019 Element 4107176 or 401902 ×1
  • Technic Gear Rack 1 x 4 Light Gray Part 3743 Element 374302 ×1

Technic Steering, Suspension and Engine 2 pieces

  • Technic Steering Arm Light Gray Part 4261 Element 4225506 or 4189316 ×2

Tiles 2 pieces

  • Tile 1 x 2 with Groove Blue Part 3069b Element 306923 ×2

Tubes and Hoses 2 pieces

  • Hose, Classic 4mm D. 12L Black Part upn0258c12 ×2

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.

We value your privacy

We use cookies 🍪 for analytics and to improve your experience. Read our privacy policy