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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.

Hopper Wagon

Checking

10017 Hopper Wagon

228 pieces in 45 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

Black 92 pieces

  • Brick 1 x 2 Black Part 3004 Element 300426 ×2
  • Brick Sloped 33° 3 x 2 Black Part 3298 Element 329826 ×8
  • Magnet Cylindrical Black Part 73092 Element 73092 ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 ×6
  • Plate 1 x 6 Black Part 3666 Element 366626 ×4
  • Plate 2 x 4 Black Part 3020 Element 302026 ×3
  • Plate 2 x 6 Black Part 3795 Element 379526 ×2
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×2
  • Plate Special 1 x 2 with Ladder Black Part 4175 Element 6285241 or 6179557 ×6
  • Plate Special 1 x 6 with Train Wagon End Fence Black Part 6583 Element 6271649 or 658326 ×2
  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Black Part 6553 Element 4107765 or 655326 ×12
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×4
  • Technic Axle 6 Black Part 3706 Element 370626 ×4
  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×4
  • Technic Beam 1 x 4 Thin Black Part 32449 Element 6327548 or 4142236 ×4
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×4
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×4
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×4
  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×4
  • Tile Special 6 x 4 with Beveled Edges and 5mm Pin (Train Bogie Plate) Black Part 4025 Element 6096842 or 6051914 ×2
  • Train Buffer Beam Black Part 4022 Element 4109853 or 402276 ×2
  • Train Coupling New Black Part 2920 Element 4299239 or 292076 ×2
  • Vehicle Base, Train 6 x 24 with Two 1 x 2 Cutouts and 3 Round Holes Each End Black Part 6584 Element 4159942 or 658476 ×1
  • Wheel Holder, Train with Wheels [Complete Assembly] Black Part 2878c01 Element 4207401 or 74784 ×4

Tan 92 pieces

  • Brick 1 x 1 Tan Part 3005 Element 4113915 or 300505 ×8
  • Brick 1 x 2 Tan Part 3004 Element 4109995 or 300405 ×14
  • Brick 1 x 6 Tan Part 3009 Element 4112982 or 300905 ×4
  • Brick 2 x 2 Corner Tan Part 2357 Element 4124455 or 4112541 ×8
  • Brick Sloped 45° 2 x 1 with Bottom Pin Tan Part 3040b Element 4121972 or 4113989 ×4
  • Brick Sloped 45° 2 x 2 Tan Part 3039 Element 4114322 ×30
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Tan Part 3660 Element 4118866 ×14
  • Brick Special 1 x 2 with Vertical Clip [Thick U Clip] Tan Part 30237a Element 4125237 ×2
  • Technic Brick 1 x 2 [2 Pin Holes] Tan Part 32000 Element 4523145 or 4143352 ×8

Blue 25 pieces

  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×2
  • Brick 1 x 3 Blue Part 3622 Element 362223 ×4
  • Brick 1 x 4 Blue Part 3010 Element 301023 ×2
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×6
  • Brick Sloped 33° 2 x 2 Double Blue Part 3300 Element 330023 ×5
  • Brick Sloped 33° 3 x 2 Blue Part 3298 Element 6294307 or 6141996 ×2
  • Brick Special 1 x 2 with Grille Blue Part 2877 Element 6289241 or 4279392 ×4

Dark Gray 14 pieces

  • Brick Round 1 x 1 Open Stud Dark Gray Part 3062b Element 4113912 or 306227 ×11
  • Equipment Shovel [Rounded Handle End] Dark Gray Part 3837 Element 383727 ×1
  • Plate 2 x 8 Dark Gray Part 3034 Element 303427 ×2

Light Gray 4 pieces

  • Technic Pin 1/2 without Friction Ridges Light Gray Part 4274 Element 427402 1 spare in the box ×4

Brown 1 piece

  • Equipment Brush / Push Broom Brown Part 3836 Element 383625 ×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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