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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.

Technic Racer

Checking

TSUPER Technic Racer

263 pieces in 72 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

Red 107 pieces

  • Brick Sloped 45° 2 x 1 with Bottom Pin Red Part 3040b Element 4121934 or 304021 ×4
  • Hinge Brick 1 x 2 Base Red Part 3937 Element 393721 ×1
  • Hinge Brick 1 x 2 Top Plate Thin Red Part 3938 Element 6534944 or 6078079 ×1
  • Plate 1 x 1 Red Part 3024 Element 302421 ×2
  • Plate 1 x 2 Red Part 3023 Element 302321 ×13
  • Plate 1 x 4 Red Part 3710 Element 371021 ×5
  • Plate 1 x 6 Red Part 3666 Element 366621 ×7
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×1
  • Plate 2 x 2 Corner Red Part 2420 Element 242071 or 242021 ×8
  • Plate 2 x 3 Red Part 3021 Element 302121 ×1
  • Plate 2 x 4 Red Part 3020 Element 302021 ×4
  • Plate 2 x 6 Red Part 3795 Element 379521 ×2
  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] Red Part 4085c Element 408521 ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Red Part 3794a ×2
  • Technic Brick 1 x 10 [9 Pin Holes] Red Part 2730 Element 273021 ×2
  • 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 ×12
  • Technic Brick 1 x 4 [3 Pin Holes] Red Part 3701 Element 370121 ×7
  • Technic Brick 1 x 6 [5 Pin Holes] Red Part 3894 Element 389421 ×13
  • Technic Brick 1 x 8 [7 Pin Holes] Red Part 3702 Element 370221 ×6
  • Technic Plate 1 x 6 with Toothed Ends Red Part 4262 Element 4189283 or 4109659 ×1
  • Technic Plate 2 x 4 [3 Holes] Red Part 3709 Element 370921 ×4
  • Technic Plate 2 x 8 [7 Holes] Red Part 3738 Element 373821 ×5
  • Wedge Plate 3 x 3 Cut Corner Red Part 2450 Element 245021 ×2

Light Gray 83 pieces

  • Brick Round 1 x 1 Open Stud Light Gray Part 3062b Element 306202 ×1
  • Brick Special 1 x 1 with Headlight Light Gray Part 4070 Element 407002 ×1
  • Cone 1 x 1 [No Top Groove] Light Gray Part 4589 Element 458902 ×1
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×1
  • 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 ×6
  • Technic Axle and Pin Connector Toggle Joint Toothed [with Slots] Light Gray Part 4273b Element 427302 ×4
  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×12
  • Technic Bush 1/2 Toothed Type I [+ Opening] Light Gray Part 4265a Element 426502 ×15
  • Technic Engine Connecting Rod Light Gray Part 2852 Element 285202 ×1
  • Technic Engine Crankshaft Light Gray Part 2853 Element 4119475 or 285302 ×1
  • Technic Engine Cylinder with Side Slots Light Gray Part 2850a ×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 ×1
  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 ×2
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×24
  • Technic Steering Arm Light Gray Part 4261 Element 4225506 or 4189316 ×4
  • Technic Steering Gear Holder Light Gray Part 2791 Element 279002 ×1
  • Technic Steering Rack Light Gray Part 2790 Element 4143357 or 279102 ×1
  • Technic Wedge Belt Wheel [aka Pulley] Light Gray Part 4185 Element 4100502 or 418502 ×1

Black 56 pieces

  • Bracket 1 x 2 - 1 x 4 [Square Corners] Black Part 2436 Element 4282746 or 243626 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×1
  • Plate 1 x 3 Black Part 3623 Element 362326 ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 ×6
  • Technic Axle 10 Black Part 3737 Element 373726 ×2
  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×4
  • 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 ×3
  • Technic Brick 1 x 12 [11 Pin Holes] Black Part 3895 Element 389526 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×3
  • Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 ×2
  • Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×4
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×4
  • Technic Plate 1 x 8 with Toothed Ends Black Part 4442 Element 444276 or 444226 ×3
  • Technic Plate 2 x 4 [3 Holes] Black Part 3709 Element 370926 ×2
  • Technic Seat / Chair [3 x 2 Base] Black Part 2717 Element 271726 ×1
  • Technic Steering Rack Top - Modified 1 x 8 Technic Plate with Toothed Ends Black Part 2792 Element 279226 ×1
  • Tyre 30 x 10.5 Offset Tread Black Part 2346 Element 234676 or 234626 ×6

White 9 pieces

  • Tile 2 x 2 with Number 1 Print White Part 3068bpr0078 ×1
  • Tile Round 2 x 2 with Black Grid Large Print White Part 4150pr0014 Element 81571 ×2
  • Wheel with Split Axle Hole White Part 3482 Element 4279395 or 4194244 ×6

Blue 7 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
  • Plate 1 x 3 Blue Part 3623 Element 362323 ×2
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×2
  • Technic Seat / Chair [3 x 2 Base] Blue Part 2717 Element 4252489 or 4225498 ×1

Dark Gray 1 piece

  • Technic Engine Piston Round Dark Gray Part 2851 Element 4160859 or 285127 ×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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