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.

Universal Building Set

Checking

8054 Universal Building Set

197 pieces in 61 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 Bricks 32 pieces

  • Technic Brick 1 x 12 [11 Pin Holes] Light Gray Part 3895 Element 4195006 or 389502 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Light Gray Part 3700 Element 370002 ×4
  • Technic Brick 1 x 4 [3 Pin Holes] Light Gray Part 3701 Element 370102 ×2
  • Technic Brick 1 x 6 [5 Pin Holes] Light Gray Part 3894 Element 389402 ×2
  • 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 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Yellow Part 3700 Element 370024 ×6
  • Technic Brick 1 x 4 [3 Pin Holes] Yellow Part 3701 Element 370124 ×4
  • 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 ×2

Plates 30 pieces

  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×4
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×2
  • Plate 1 x 6 Light Gray Part 3666 Element 366602 ×4
  • Plate 2 x 2 Corner Light Gray Part 2420 Element 242052 or 242002 ×4
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×6
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×2
  • Plate 1 x 6 Yellow Part 3666 Element 366624 ×2
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×2
  • Plate 2 x 6 Yellow Part 3795 Element 379524 ×4

Technic Pins 26 pieces

  • Technic Pin with Friction Ridges Lengthwise, without Center Slots Black Part 4459 ×10
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×4
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×12

Technic Bushes 18 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 ×10

Technic Axles 16 pieces

  • Technic Axle 10 Black Part 3737 Element 373726 ×4
  • Technic Axle 12 Black Part 3708 Element 370826 ×2
  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×2
  • Technic Axle 6 Black Part 3706 Element 370626 ×4
  • Technic Axle 8 Black Part 3707 Element 370726 ×2

Wheels and Tyres 15 pieces

  • Tyre 30 x 10.5 Offset Tread Black Part 2346 Element 234676 or 234626 ×6
  • Technic Wedge Belt Wheel [aka Pulley] Light Gray Part 4185 Element 4100502 or 418502 ×3
  • Wheel with Split Axle hole Yellow Part 3482 Element 348224 ×6

Technic Gears 12 pieces

  • Technic Worm Gear Black Part 4716 Element 6037533 or 471626 ×1
  • Technic Gear 14 Tooth Bevel Light Gray Part 4143 Element 414352 or 414302 ×2
  • 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 ×1
  • Technic Gear 24 Tooth [Old Style - Three axle holes] Light Gray Part 3648a ×2
  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 ×4
  • Technic Gear Rack 1 x 4 Light Gray Part 3743 Element 374302 ×1

Bricks Sloped 8 pieces

  • Brick Sloped 45° 2 x 1 with Bottom Pin Light Gray Part 3040b Element 4121933 or 304002 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Yellow Part 3040b Element 4121965 or 304024 ×6

Hinges, Arms and Turntables 8 pieces

  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Yellow Part 4276b Element 4256398 or 4189095 ×4
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] Yellow Part 4275b Element 4256391 or 4225510 ×4

Plates Special 8 pieces

  • Technic Plate 2 x 4 [3 Holes] Light Gray Part 3709 Element 370902 ×2
  • Technic Plate 2 x 8 [7 Holes] Light Gray Part 3738 Element 373802 ×2
  • Technic Plate 2 x 4 [3 Holes] Yellow Part 3709 Element 370924 ×4

Electronics 6 pieces

  • Battery Box, 4.5V, 2 x 4, 3 x C-Cell Polarity Switch Light Gray Part 4352 Element 73261 ×1
  • Battery Box, 4.5V, 4 x 24, 3 x C-Cell with Switch [Complete Assembly] Light Gray Part 4350c02 ×1
  • Electric Connector, 2 Way Male Squared Narrow Long [Complete Assembly] Light Gray Part 766c01 ×2
  • Motor, 4.5V Type 2 for 2-Prong Connectors with Middle Pin Light Gray Part 6216b ×1
  • Wire 12V / 4.5V with Two Leads [Undetermined Length] Light Gray Part 74503 ×1

Technic Connectors 6 pieces

  • Technic Axle and Pin Connector Light Gray Part 3651 Element 4105243 or 365102 ×4
  • Technic Axle and Pin Connector Toggle Joint Toothed [with Slots] Light Gray Part 4273b Element 427302 ×2

String, Bands and Reels 4 pieces

  • Rubber Band Medium (Square Cross Section) Black Part 71156 Element 71156 ×1
  • Rubber Band Medium (Square Cross Section) Thin Cut Black Part 70012 Element 70012 ×2
  • String Cord Medium Thickness 50cm Black Part 7916c50 ×1

Technic Special 3 pieces

  • Technic Plate 1 x 10 with Toothed Ends Light Gray Part 2719 Element 4225499 or 4189328 ×3

Technic Steering, Suspension and Engine 3 pieces

  • Technic Steering Arm Light Gray Part 4261 Element 4225506 or 4189316 ×2
  • Technic Universal Joint 4L [Complete Assembly] Light Gray Part 9244 Element 9244 ×1

Tiles 2 pieces

  • Tile 1 x 2 with Groove Light Gray Part 3069b Element 306902 ×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