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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.

Special Elements for Simple Machines Set

Checking

970669 Special Elements for Simple Machines Set

49 pieces in 20 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.

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Piece checklist

Plates 9 pieces

  • Plate 1 x 2 Blue Part 3023 Element 302323 ×6
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×2
  • Plate 6 x 8 Blue Part 3036 Element 303673 or 303623 ×1

Technic Bricks 8 pieces

  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Green Part 32064b ×4
  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×4

Bricks 6 pieces

  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×4
  • Brick 2 x 4 Red Part 3001 Element 300121 ×2

Technic Special 5 pieces

  • Technic Plate 1 x 5 with Smooth Ends, 4 Studs and Centre Axle Hole Blue Part 32124 Element 6280384 or 4112874 ×2
  • Technic Cam Light Gray Part 6575 Element 657502 ×2
  • Technic Gearbox 2 x 4 x 3 1/3 Yellow Part 6588 Element 658824 ×1

Bricks Sloped 4 pieces

  • Brick Sloped 45° 2 x 1 with Bottom Pin Red Part 3040b Element 4121934 or 304021 ×4

Technic Connectors 4 pieces

  • Technic Axle and Pin Connector Angled #1 Blue Part 32013 Element 6332570 or 4107797 ×4

Technic Steering, Suspension and Engine 3 pieces

  • Technic Engine Crankshaft Center Light Gray Part 2854 Element 285402 ×2
  • Technic Steering Pulley Large Light Gray Part 3736 Element 373602 ×1

Bricks Round and Cones 2 pieces

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

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 40 Tooth Light Gray Part 3649 Element 364902 ×2

Tiles 2 pieces

  • Tile 1 x 4 with Groove Blue Part 2431 Element 243123 ×2

Baseplates 1 piece

  • Baseplate 16 x 16 Green Part 3867 Element 4217115 or 609828 ×1

Supports, Girders and Cranes 1 piece

  • Hook, Technic - Large Black Part 70496 Element 70644 ×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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