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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.

TECHNIC Universal Set

Checking

8090 TECHNIC Universal Set

274 pieces in 55 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

Light Gray 127 pieces

  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×2
  • Plate 2 x 2 Light Gray Part 3022 Element 302202 ×18
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×10
  • Technic Axle and Pin Connector Light Gray Part 3651 Element 4105243 or 365102 ×8
  • Technic Axle and Pin Connector Toggle Joint Toothed [with Slots] Light Gray Part 4273b Element 427302 ×16
  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×9
  • Technic Bush 1/2 Toothed Type I [+ Opening] Light Gray Part 4265a Element 426502 1 spare in the box ×8
  • Technic Engine Piston Square 2 x 2 - Old Light Gray Part 3652 Element 365202 ×3
  • Technic Gear 14 Tooth Bevel Light Gray Part 4143 Element 414352 or 414302 ×4
  • Technic Gear 16 Tooth with Round Holes [Old Style] Light Gray Part 4019 Element 4107176 or 401902 ×1
  • Technic Gear 24 Tooth Crown with Flat Teeth Light Gray Part 3650a ×2
  • Technic Gear 24 Tooth [Old Style - Three axle holes] Light Gray Part 3648a ×4
  • Technic Gear 40 Tooth Light Gray Part 3649 Element 364902 ×1
  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 ×2
  • Technic Gear Differential [Old Style, 28 Teeth] Light Gray Part 73071 ×1
  • Technic Gear Rack 1 x 4 Light Gray Part 3743 Element 374302 ×2
  • Technic Pin 1/2 without Friction Ridges Light Gray Part 4274 Element 427402 1 spare in the box ×8
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 1 spare in the box ×6
  • Technic Plate 1 x 4 with Toothed Ends Light Gray Part 4263 Element 4225508 or 4189319 ×3
  • Technic Plate 1 x 6 with Toothed Ends Light Gray Part 4262 Element 4240413 or 4109661 ×3
  • Technic Plate 2 x 4 [3 Holes] Light Gray Part 3709 Element 370902 ×1
  • Technic Plate 2 x 8 [7 Holes] Light Gray Part 3738 Element 373802 ×1
  • Technic Shock Absorber 6.5L with Normal Spring [Complete Assembly] Light Gray Part 73129 Element 73129 ×2
  • Technic Steering Arm Light Gray Part 4261 Element 4225506 or 4189316 ×2
  • Technic Steering Pulley Large Light Gray Part 3736 Element 373602 ×1
  • Technic Universal Joint 4L [Complete Assembly] Light Gray Part 9244 Element 9244 ×2
  • Technic Wedge Belt Wheel [aka Pulley] Light Gray Part 4185 Element 4100502 or 418502 ×1
  • Tile 1 x 2 with Groove Light Gray Part 3069b Element 306902 ×2
  • Wheel 20 x 30 Technic Light Gray Part 4266 Element 4179392 or 426602 ×4

Yellow 73 pieces

  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×16
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×6
  • Plate 1 x 6 Yellow Part 3666 Element 366624 ×5
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×4
  • Technic Brick 1 x 12 [11 Pin Holes] Yellow Part 3895 Element 6262393 or 389524 ×4
  • Technic Brick 1 x 16 [15 Pin Holes] Yellow Part 3703 Element 370324 ×10
  • Technic Brick 1 x 2 [1 Pin Hole] Yellow Part 3700 Element 370024 ×8
  • Technic Brick 1 x 4 [3 Pin Holes] Yellow Part 3701 Element 370124 ×8
  • Technic Brick 1 x 6 [5 Pin Holes] Yellow Part 3894 Element 389424 ×4
  • Technic Brick 1 x 8 [7 Pin Holes] Yellow Part 3702 Element 370224 ×4
  • Technic Plate 2 x 4 [3 Holes] Yellow Part 3709 Element 370924 ×2
  • Technic Plate 2 x 8 [7 Holes] Yellow Part 3738 Element 4624216 or 373824 ×2

Black 70 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 ×12
  • Plate 4 x 8 Black Part 3035 Element 303526 ×6
  • String Cord Medium Thickness 50cm Black Part 7916c50 ×1
  • Technic Axle 10 Black Part 3737 Element 373726 ×2
  • Technic Axle 12 Black Part 3708 Element 370826 ×2
  • Technic Axle 2 Black Part 3704 Element 370426 ×10
  • Technic Axle 4 Black Part 3705 Element 370526 ×5
  • Technic Axle 6 Black Part 3706 Element 370626 ×4
  • Technic Axle 8 Black Part 3707 Element 370726 ×4
  • Technic Pin with Friction Ridges Lengthwise, without Center Slots Black Part 4459 ×18
  • Tyre 30 x 20 Technic Black Part 4267 Element 4259804 or 426726 ×4

Trans-Red 2 pieces

  • Plate 1 x 1 Trans-Red Part 3024 Element 6513963 or 6252042 ×2

Trans-Yellow 2 pieces

  • Plate 1 x 1 Trans-Yellow Part 3024 Element 6513966 or 6252045 ×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.

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