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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.

Emergency Repair Truck

Checking

6521 Emergency Repair Truck

54 pieces in 27 part and color combinations, plus 1 minifigure.

The piece count includes the 4 parts inside the set's minifigures, which this inventory lists separately. 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.

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Piece checklist

Plates 12 pieces

  • Plate 1 x 1 Trans-Clear Part 3024 Element 6513962 or 6252041 ×2
  • Plate 1 x 1 Trans-Red Part 3024 Element 6513963 or 6252042 ×2
  • Plate 1 x 1 Yellow Part 3024 Element 302424 ×6
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×1
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×1

Wheels and Tyres 8 pieces

  • Tyre 15 x 6 Offset Tread Small Black Part 3641 Element 4501046 or 364126 ×4
  • Wheel 8 x 6 White Part 4624 Element 462401 ×4

Bricks Special 6 pieces

  • Brick Special 1 x 1 with Headlight Yellow Part 4070 Element 407024 ×6

Panels 6 pieces

  • Panel 1 x 2 x 1 [Square Corners] Yellow Part 4865a Element 486524 ×4
  • Panel 1 x 2 x 2 with Highway Print Yellow Part 4864apr0009 ×2

Plates Round Curved and Dishes 4 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 ×2

Plates Special 4 pieces

  • Plate Special 2 x 2 with Wheel Holders Black Part 4600 Element 460026 ×2
  • Plate Special 1 x 1 with Clip Vertical [Thin U Clip] Yellow Part 4085b ×2

Transportation - Land 4 pieces

  • Steering Stand 1 x 2 with Black Steering Wheel Yellow Part 3829c01 Element 9553 ×1
  • Vehicle Base 4 x 10 x 2/3 with 2 x 2 Recessed Center with Smooth Underside, 1 x 2 Cutouts, No Center Hole Yellow Part 4212b Element 4201255 or 421224 ×1
  • Wheel Arch, Mudguard 2 x 4 Studded Yellow Part 3788 Element 378824 ×2

Hinges, Arms and Turntables 2 pieces

  • Hinge Tile 1 x 4 Yellow Part 4625 Element 4240361 or 462524 ×1
  • Hinge Vehicle Roof 4 x 4 Yellow Part 4213 Element 4240388 or 421324 ×1

Minifig Shields, Weapons, & Tools 2 pieces

  • Tool Hammer / Mallet Large Black Part 4522 Element 452226 ×1
  • Tool Screwdriver and Spanner / Wrench Black Part 4006 Element 6034000 or 4569095 ×1

Windows and Doors 2 pieces

  • Door 1 x 3 x 1 Left Yellow Part 3822 Element 6587460 or 4190511 ×1
  • Door 1 x 3 x 1 Right Yellow Part 3821 Element 6587459 or 4537985 ×1

Bars, Ladders and Fences 1 piece

  • Lever Small Base with Black Lever Black Part 298c02 Element 73587 ×1

Tiles 1 piece

  • Tile 1 x 4 with Black Spanner / Wrench Print Yellow Part 2431pr0014 ×1

Tiles Special 1 piece

  • Tile Special 1 x 2 Grille without Bottom Groove Black Part 2412a ×1

Windscreens and Fuselage 1 piece

  • Windscreen 2 x 4 x 2 Trans-Clear Part 3823 Element 6581801 or 6253681 ×1

Minifigures 1 figure

  • Man, Blue Jacket with Highway Logo, Light Gray Legs, Red Cap 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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