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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.

Tri-Wheeled Tyrax

Checking

6851 Tri-Wheeled Tyrax

32 pieces in 22 part and color combinations, plus 1 minifigure.

LEGO counts 39 pieces. This inventory comes from a separate parts catalog and lists 38, including the 6 parts inside the minifigures; 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.

Show

Piece checklist

Plates 8 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×1
  • Plate 2 x 3 Black Part 3021 Element 302126 ×2
  • Plate 2 x 6 Black Part 3795 Element 379526 ×1
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×1
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×1
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×2

Bricks 6 pieces

  • Brick 1 x 2 Black Part 3004 Element 300426 ×1
  • Brick 1 x 6 Black Part 3009 Element 300926 ×2
  • Brick 2 x 8 Black Part 3007 Element 6037390 or 300726 ×1
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×2

Bricks Special 3 pieces

  • Brick Special 2 x 2 with Pin and No Axle Hole Black Part 4730 Element 473026 ×3

Tiles Special 3 pieces

  • Tile Special 1 x 2 with Handle Black Part 2432 Element 243226 ×1
  • Tile Special 1 x 1 with Clip and Straight Tips White Part 2555 Element 255501 ×2

Wheels and Tyres 3 pieces

  • Wheel Hard Plastic Medium (35mm D. x 31mm) Black Part 2593 Element 4106931 or 259376 ×3

Bars, Ladders and Fences 2 pieces

  • Antenna 8H Whip Trans-Neon Green Part 2569 Element 6265159 or 6164380 ×2

Bricks Sloped 2 pieces

  • Brick Sloped 33° 3 x 2 Black Part 3298 Element 329826 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×1

Hinges, Arms and Turntables 2 pieces

  • Hinge Brick 1 x 2 Base Black Part 3937 Element 393726 ×1
  • Hinge Brick 1 x 2 Top Plate Thin White Part 3938 Element 393801 ×1

Panels 1 piece

  • Panel 3 x 2 x 6 Trans-Neon Green Part 2466 Element 4109867 or 246649 ×1

Plates Special 1 piece

  • Plate Special 1 x 4 Offset with Bar Holes Black Part 4590 Element 6002559 or 4278029 ×1

Tiles 1 piece

  • Tile 1 x 2 with Red and Yellow Control Panel Print (Original) White Part 3069bpr0048 Element 4264367 or 81515 ×1

Minifigures 1 figure

  • Blacktron II - 3626b Head Minifigure, checked as a whole figure ×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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