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The Workshop Sheet 10 of 22

LEGO Missing Piece Checker

Enter a set number, mark each piece found or missing, and leave with a list of what is missing, the element IDs LEGO asks for and links to buy the parts. It is free and needs no account. Rule out the usual hiding places first.

Universal Building Set

Checking

8024 Universal Building Set

114 pieces in 37 part and color combinations.

LEGO counts 113 pieces. This inventory comes from a separate parts catalog and lists 114; the two do not always count the same elements, so their totals differ. 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 24 pieces

  • Plate 1 x 3 Blue Part 3623 Element 362323 ×3
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×2
  • Plate 1 x 2 Red Part 3023 Element 302321 ×7
  • Plate 1 x 4 Red Part 3710 Element 371021 ×4
  • Plate 1 x 6 Red Part 3666 Element 366621 ×4
  • Plate 2 x 2 Corner Red Part 2420 Element 242071 or 242021 ×2
  • Plate 2 x 6 Red Part 3795 Element 379521 ×2

Technic Pins 24 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×6
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×18

Technic Bricks 22 pieces

  • Technic Brick 1 x 12 [11 Pin Holes] Red Part 3895 Element 389521 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×8
  • Technic Brick 1 x 4 [3 Pin Holes] Red Part 3701 Element 370121 ×2
  • Technic Brick 1 x 6 [5 Pin Holes] Red Part 3894 Element 389421 ×6
  • Technic Brick 1 x 8 [7 Pin Holes] Red Part 3702 Element 370221 ×4

Wheels and Tyres 9 pieces

  • Tyre 30 x 10.5 Offset Tread Black Part 2346 Element 234676 or 234626 ×4
  • Technic Wedge Belt Wheel [aka Pulley] Light Gray Part 4185 Element 4100502 or 418502 ×1
  • Wheel with Split Axle Hole Yellow Part 3482 Element 348224 ×4

Plates Special 6 pieces

  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Red Part 3794a ×2
  • Technic Plate 2 x 4 [3 Holes] Red Part 3709 Element 370921 ×2
  • Technic Plate 2 x 8 [7 Holes] Red Part 3738 Element 373821 ×2

Technic Axles 5 pieces

  • Technic Axle 10 Black Part 3737 Element 373726 ×1
  • Technic Axle 4 Black Part 3705 Element 370526 ×2
  • Technic Axle 6 Black Part 3706 Element 370626 ×2

Technic Gears 5 pieces

  • Technic Gear 24 Tooth Crown with Flat Teeth Light Gray Part 3650a ×1
  • Technic Gear 24 Tooth [Old Style - Three Axle Holes] Light Gray Part 3648a ×1
  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 ×3

Technic Steering, Suspension and Engine 5 pieces

  • Technic Steering Rack Top - Modified 1 x 8 Technic Plate with Toothed Ends Black Part 2792 Element 279226 ×1
  • Technic Steering Arm Light Gray Part 4261 Element 4225506 or 4189316 ×2
  • Technic Steering Gear Holder Light Gray Part 2791 Element 279002 ×1
  • Technic Steering Rack Light Gray Part 2790 Element 4143357 or 279102 ×1

Technic Bushes 4 pieces

  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×4

Technic Connectors 4 pieces

  • Technic Axle and Pin Connector Light Gray Part 3651 Element 4105243 or 365102 ×4

Bricks Sloped 2 pieces

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

Hinges, Arms and Turntables 2 pieces

  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Blue Part 4276b Element 4238854 or 4114247 ×1
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] Blue Part 4275b Element 4239024 or 427523 ×1

Technic Special 2 pieces

  • Technic Plate 1 x 8 with Toothed Ends Black Part 4442 Element 444276 or 444226 ×1
  • Technic Plate Rotor 3 Blade with Toothed Ends and 3 Studs (Propeller) Light Gray Part 2712 Element 271252 or 271202 ×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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