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

8035 Universal Building Set

174 pieces in 49 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

Light Gray 64 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×4
  • Technic Axle and Pin Connector Light Gray Part 3651 Element 4105243 or 365102 ×10
  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×13
  • Technic Gear 24 Tooth Crown with Flat Teeth Light Gray Part 3650a ×3
  • Technic Gear 24 Tooth [Old Style - Three axle holes] Light Gray Part 3648a ×1
  • Technic Gear 40 Tooth Light Gray Part 3649 Element 364902 ×2
  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 ×3
  • Technic Gear Rack 1 x 4 Light Gray Part 3743 Element 374302 ×1
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×13
  • Technic Plate 1 x 6 with Toothed Ends Light Gray Part 4262 Element 4240413 or 4109661 ×3
  • Technic Steering Arm Light Gray Part 4261 Element 4225506 or 4189316 ×2
  • Technic Wedge Belt Wheel [aka Pulley] Light Gray Part 4185 Element 4100502 or 418502 ×3
  • Wheel with Split Axle hole Light Gray Part 3482 Element 348202 ×6

Blue 58 pieces

  • Hinge Brick 1 x 2 Base Blue Part 3937 Element 393723 ×1
  • Hinge Brick 1 x 2 Top Plate Thin Blue Part 3938 Element 4279389 or 393823 ×1
  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Blue Part 4276b Element 4238854 or 4114247 ×2
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] Blue Part 4275b Element 4239024 or 427523 ×2
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×2
  • Plate 1 x 3 Blue Part 3623 Element 362323 ×4
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×6
  • Plate 1 x 6 Blue Part 3666 Element 366623 ×6
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×1
  • Plate 2 x 6 Blue Part 3795 Element 379523 ×2
  • Technic Brick 1 x 12 [11 Pin Holes] Blue Part 3895 Element 389523 ×2
  • Technic Brick 1 x 16 [15 Pin Holes] Blue Part 3703 Element 370323 ×4
  • Technic Brick 1 x 2 [1 Pin Hole] Blue Part 3700 Element 370023 ×8
  • Technic Brick 1 x 4 [3 Pin Holes] Blue Part 3701 Element 370123 ×6
  • Technic Brick 1 x 6 [5 Pin Holes] Blue Part 3894 Element 389423 ×4
  • Technic Brick 1 x 8 [7 Pin Holes] Blue Part 3702 Element 370223 ×2
  • Technic Plate 2 x 4 [3 Holes] Blue Part 3709 Element 370923 ×4
  • Tile 2 x 2 with Groove Blue Part 3068b Element 306823 ×1

Black 28 pieces

  • String Cord Thin (0.5mm) 75cm Black Part 56823c75 Element 7909 ×1
  • Technic Axle 10 Black Part 3737 Element 373726 ×2
  • 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 ×4
  • Technic Axle 6 Black Part 3706 Element 370626 ×5
  • Technic Axle 8 Black Part 3707 Element 370726 ×2
  • Technic Pin with Friction Ridges Lengthwise, without Center Slots Black Part 4459 ×4
  • Tyre 30 x 10.5 Offset Tread Black Part 2346 Element 234676 or 234626 ×6

Red 24 pieces

  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Red Part 4276b Element 4238277 or 427621 ×2
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] Red Part 4275b Element 4179194 or 427521 ×2
  • Plate 1 x 4 Red Part 3710 Element 371021 ×4
  • Plate 2 x 6 Red Part 3795 Element 379521 ×4
  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×4
  • Technic Brick 1 x 6 [5 Pin Holes] Red Part 3894 Element 389421 ×2
  • Technic Brick 1 x 8 [7 Pin Holes] Red Part 3702 Element 370221 ×2
  • Technic Plate 2 x 4 [3 Holes] Red Part 3709 Element 370921 2 spares in the box ×2
  • Technic Plate 2 x 8 [7 Holes] Red Part 3738 Element 373821 ×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.