BlockTalk Find Your Set

Free tool

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.

Auto Service Truck

Checking

646 Auto Service Truck

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

The official 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.

Show

Piece checklist

Plates 12 pieces

  • Plate 1 x 1 Red Part 3024 Element 302421 ×1
  • Plate 1 x 4 Red Part 3710 Element 371021 ×4
  • Plate 4 x 4 Red Part 3031 Element 4243814 or 303121 ×1
  • Plate 1 x 1 Yellow Part 3024 Element 302424 ×2
  • Plate 1 x 3 Yellow Part 3623 Element 362324 ×2
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×2

Bricks 7 pieces

  • Brick 1 x 4 Red Part 3010 Element 301021 ×4
  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×2
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×1

Wheels and Tyres 6 pieces

  • Plate Special 2 x 2 with Wheels Red Black Part 122c01 ×2
  • Tyre 15 x 6 Offset Tread Small Black Part 3641 Element 4501046 or 364126 ×4

Windows and Doors 5 pieces

  • Window 1 x 2 x 3 Shutter Red Part 3856 Element 4189092 or 385621 ×2
  • Window 1 x 4 x 3 Red Part 3853 Element 385321 ×1
  • 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

Transportation - Land 4 pieces

  • Vehicle Base 4 x 10 x 2/3 with 2 x 2 Recessed Center with Center Hole, 1 x 2 Cutouts (Early Version) Black Part 4212a ×1
  • Steering Stand 1 x 2 with Black Steering Wheel Yellow Part 3829c01 Element 9553 ×1
  • Wheel Arch, Mudguard 2 x 4 Studded Yellow Part 3788 Element 378824 ×2

Bricks Round and Cones 2 pieces

  • Brick Round 1 x 1 Solid Stud Trans-Yellow Part 3062a ×2

Minifig Shields, Weapons, & Tools 1 piece

  • Tool Screwdriver and Spanner / Wrench Black Part 4006 Element 6034000 or 4569095 ×1

Stickers 1 piece

  • Sticker Sheet for Set 646-1 [No Color/Any Color] Part 190435 ×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 Shirt with Buttons and Pockets, Black Legs, Black Hat 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.

We value your privacy

We use cookies 🍪 for analytics and to improve your experience. Read our privacy policy