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The Workshop Sheet 10 of 19

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.

Mobile Police Truck

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6450 Mobile Police Truck

80 pieces in 48 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

Black 38 pieces

  • Equipment Radio [Compact Handle] Black Part 3962a ×1
  • Hinge Vehicle Roof 4 x 4 Black Part 4213 Element 421326 ×1
  • Hinge Vehicle Roof Holder 1 x 4 x 2 Black Part 4214 Element 421426 ×1
  • Lever Small Base with Light Gray Lever Black Part 298c03 Element 73667 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 1 x 3 Black Part 3623 Element 362326 ×4
  • Plate 1 x 4 Black Part 3710 Element 371026 ×3
  • Plate 1 x 6 Black Part 3666 Element 366626 ×2
  • Plate 2 x 10 Black Part 3832 Element 383226 ×1
  • Plate 2 x 3 Black Part 3021 Element 302126 ×3
  • Plate 2 x 6 Black Part 3795 Element 379526 ×1
  • Plate 2 x 8 Black Part 3034 Element 303426 ×1
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thin U Clip] Black Part 4085b ×6
  • Plate Special 2 x 2 with Wheel Holders Black Part 4600 Element 460026 ×2
  • Sound Brick, Round, 9V 2 x 2 x 1 1/3 with Two Town Police Noises Black Part 4774c01 ×1
  • Tyre 21 x 8 Offset Tread Medium Black Part 4084 ×4
  • Vehicle Base 4 x 5 with Wheel Arches, 2 x 2 Opening Black Part 4211 Element 4125515 or 421126 ×1
  • Wheel Arch, Mudguard 2 x 4 Studded Black Part 3788 Element 4195378 or 378826 ×1
  • Window 1 x 4 x 3 Black Part 3853 Element 4216388 or 4189082 ×1

White 25 pieces

  • Bar 1 x 4 x 2 with Studs White Part 4083 Element 408301 ×2
  • Battery Box, 9V Small [Complete Assembly] White Part 4760c01 ×1
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×2
  • Brick Special 1 x 1 with Headlight White Part 4070 Element 6548267 or 407001 ×2
  • Door 1 x 3 x 1 Left White Part 3822 Element 4527637 or 4161547 ×1
  • Door 1 x 3 x 1 Right White Part 3821 Element 4537987 or 4527638 ×1
  • Light Brick 1 x 4 [Two Bulbs] White Part 4771 ×1
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×2
  • Plate 1 x 2 with Electric Contacts White Part 4755 Element 475501 or 73532 ×1
  • Plate 1 x 8 White Part 3460 Element 6550141 or 346001 ×2
  • Plate 2 x 4 with Electric Contacts White Part 4757 Element 475701 or 73534 ×1
  • Plate 2 x 8 with Electric Contacts White Part 4758 Element 475801 or 73535 ×1
  • Tile 2 x 2 with Red Warning Triangle Print White Part 3068bpr0030 Element 4140790 ×1
  • Tile 2 x 2 with White Arrow on Blue Disc Print White Part 3068bpr0029 Element 80175 ×1
  • Wheel 8 x 6 White Part 4624 Element 462401 ×4
  • Window 1 x 2 x 3 Shutter White Part 3856 Element 4177767 or 385601 ×2

Blue 4 pieces

  • Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Blue Part 4349 Element 4111858 ×1
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×2
  • Plate Special 1 x 2 with Ladder Blue Part 4175 Element 4519966 or 4218295 ×1

Trans-Yellow 4 pieces

  • Brick Round 1 x 1 x 2/3 Light Bulb Cover Trans-Yellow Part 4770 Element 477044 1 spare in the box ×2
  • Plate 1 x 1 Trans-Yellow Part 3024 Element 6513966 or 6252045 ×2

Red 3 pieces

  • Equipment Signal Paddle Red Part 3900 Element 390021 ×1
  • Seat / Chair 2 x 2 Red Part 4079 ×1
  • Steering Stand 1 x 2 with Black Steering Wheel Red Part 3829c01 Element 9552 ×1

Trans-Dark Blue 2 pieces

  • Brick Round 1 x 1 x 2/3 Light Bulb Cover Trans-Dark Blue Part 4770 Element 477043 1 spare in the box ×2

Trans-Red 2 pieces

  • Brick Round 1 x 1 x 2/3 Light Bulb Cover Trans-Red Part 4770 Element 4226863 or 477041 1 spare in the box ×2

Trans-Light Blue 1 piece

  • Windscreen 2 x 4 x 2 Trans-Light Blue Part 3823 Element 6581802 or 6253682 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 6450-1 [No Color/Any Color] Part 196715 Element 196715 ×1

Minifigures 1 figure

  • Policeman, Black Suit with Pocket and Badge, White Hat (3626a 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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