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.

Aqua Res-Q Transport

Checking

4606 Aqua Res-Q Transport

40 pieces in 27 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

Wheels and Tyres 12 pieces

  • Tyre 30.4 x 14 Offset Tread Black Part 30391 Element 4140670 or 3039126 ×6
  • Wheel 18 x 14 with Tread Small Hub Yellow Part 30285 Element 4140734 ×6

Transportation - Land 5 pieces

  • Steering Wheel Small, 2 x 2 Black Part 30663 Element 4153044 ×1
  • Vehicle Base 4 x 14 x 2 1/3, 2 x 12 Recessed Center, Pins, Pin Holes Black Part 30642 Element 4153093 ×1
  • Grille 6 x 4 x 3 [2 Pins & 2 Pin Holes] Light Gray Part 30632 Element 4153070 ×1
  • Cockpit 6 x 6 x 5 with Hinge Yellow Part 30619 Element 4153641 ×1
  • Vehicle Base, Trailer 6 x 12 x 1 1/3 Yellow Part 30263 Element 4550448 or 4116802 ×1

Hinges, Arms and Turntables 4 pieces

  • Hinge 1 x 2 Locking with 2 Fingers and Towball Socket, 9 Teeth Black Part 30396 Element 4144567 or 4143351 ×1
  • Technic Connector 3 x 1 x 4 with Two Pins and Click Hinge Black Part 30624 Element 4153116 ×1
  • Hinge Brick 1 x 4 Locking with 1 Finger Vertical End and 2 Fingers Vertical End, 9 Teeth Light Gray Part 30387 Element 4144571 or 4142993 ×1
  • Hinge Brick 1 x 6 Locking with 1 Finger Vertical End and 2 Fingers Vertical End, 9 Teeth Light Gray Part 30388 Element 4144578 ×1

Bars, Ladders and Fences 2 pieces

  • Plate Special 1 x 6 with Train Wagon End Fence Dark Gray Part 6583 Element 4109788 or 658327 ×2

Bricks Sloped 2 pieces

  • Brick Sloped 45° 10 x 2 x 2 Double Yellow Part 30180 Element 4655572 or 4112090 ×2

Minifig Accessories 2 pieces

  • Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Blue Part 4349 Element 4111858 ×1
  • Equipment Radio [Extended Handle, Compact Speaker Grille] Dark Gray Part 3962b Element 4118707 ×1

Minifigs 2 pieces

  • Juniors Midifig, Jack Stone with Black Jacket, Blue Legs and Blue Vest Black Part 40513pr0005 Element 4154689 ×1
  • Juniors Midifig, Aqua Res-Q Pilot with Closed Face Helmet Dark Gray Part 40510pr0001 Element 4154566 ×1

Plates 2 pieces

  • Plate 1 x 10 Black Part 4477 Element 447726 ×2

Bricks 1 piece

  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×1

Bricks Curved 1 piece

  • Brick Curved 1 x 4 with Sloped Ends and Two Top Studs Trans-Neon Green Part 40996 Element 4154081 ×1

Bricks Special 1 piece

  • Brick Special 1 x 2 with Vertical Clip [Thick U Clip] Yellow Part 30237a ×1

Flags, Banners and Signs 1 piece

  • Antenna 8H Whip with Flag Blue Part 30322 Element 4116851 ×1

Supports, Girders and Cranes 1 piece

  • Hook with Towball Dark Gray Part 30395 Element 4140702 ×1

Technic Bricks 1 piece

  • Technic Brick 4 x 4 with 2 x 2 Opening Light Gray Part 32324 Element 4141499 ×1

Tiles Special 1 piece

  • Tile Special Round 2 x 2 - Thin Lifting Ring Blue Part 2376 Element 4155651 or 237623 ×1

Transportation - Sea and Air 1 piece

  • Boat / Rubber Raft / Dinghy 6 x 10 Black Part 30086c01 Element 6093110 or 4154872 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 4 x 6 x 4 Canopy with Hinge and Res-Q Print Trans-Brown Part 30633pr0003 Element 4193746 or 4153069 ×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.