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.

TunerX

Checking

8666 TunerX

61 pieces in 26 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

Plates 16 pieces

  • Plate 1 x 1 Black Part 3024 Element 302426 ×4
  • Plate 1 x 2 Black Part 3023 Element 302326 ×1
  • Plate 2 x 3 Black Part 3021 Element 302126 ×1
  • Plate 2 x 4 Black Part 3020 Element 302026 ×1
  • Plate 2 x 6 Black Part 3795 Element 379526 ×1
  • Plate 4 x 4 Dark Bluish Gray Part 3031 Element 4243831 or 4211089 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×1
  • Plate 1 x 1 Trans-Red Part 3024 Element 6513963 or 6252042 ×2
  • Plate 2 x 2 Corner Yellow Part 2420 Element 242074 or 242024 ×4

Bricks Curved 9 pieces

  • Brick Curved 2 x 2 No Studs - 3 Recessed Side Ports Black Part 44675 Element 6021752 or 4185272 ×1
  • Brick Curved 3 x 1 No Studs Black Part 50950 Element 4251161 ×8

Wheels and Tyres 8 pieces

  • Tyre 14 x 6 Solid Smooth Black Part 50951 Element 4246901 ×4
  • Wheel 11 x 6 mm with Five Spokes and Silver Print Black Part 50944pr0001 Element 6022424 or 4248538 ×4

Bricks Sloped 6 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Yellow Part 54200 Element 4504381 or 4283095 ×6

Plates Special 6 pieces

  • Plate Special 2 x 2 with Wheels Holder Wide Black Part 6157 Element 615726 ×2
  • Bracket 1 x 2 - 1 x 4 [Square Corners] Yellow Part 2436 Element 4282745 or 243624 ×4

Tiles 3 pieces

  • Tile 1 x 4 with Groove Yellow Part 2431 Element 243124 ×3

Transportation - Land 3 pieces

  • Grille / Spoiler with 1 x 2 Plate, 2 x 2 Anti-studs (Racers Car) Yellow Part 50949 Element 4248536 ×1
  • Mudguard 2 x 4 with Molded Headlights Yellow Part 44674 Element 6327696 or 6172120 ×1
  • Wheel Arch, Mudguard 2 x 4 Studded Yellow Part 3788 Element 378824 ×1

Bricks 2 pieces

  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×2

Bricks Special 2 pieces

  • Brick Special 1 x 1 with Headlight Yellow Part 4070 Element 407024 ×2

Panels 2 pieces

  • Panel 1 x 1 x 1 Corner Black Part 6231 Element 4106347 or 4101709 ×2

Plates Round Curved and Dishes 2 pieces

  • Plate Round 1 x 1 with Solid Stud Dark Bluish Gray Part 6141 Element 4210633 1 spare in the box ×2

Stickers 1 piece

  • Sticker Sheet for Set 8666-1 [No Color/Any Color] Part 54395 Element 4284043 ×1

Tiles Special 1 piece

  • Tile Special 1 x 2 Grille with Bottom Groove Metallic Silver Part 2412b Element 6051422 or 4579833 ×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.