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.

Extreme Engines

Checking

31072 Extreme Engines

109 pieces in 53 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 Special 19 pieces

  • Bracket 1 x 2 - 2 x 2 Black Part 44728 Element 6117973 or 6048855 ×4
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Light Bluish Gray Part 15573 Element 6066097 or 4211451 ×1
  • Plate Special 1 x 2 with Door Rail Light Bluish Gray Part 32028 Element 4211568 ×2
  • Plate Special 1 x 2 with Handles on Ends Light Bluish Gray Part 18649 Element 6093058 ×3
  • Bracket 1 x 2 - 1 x 2 Inverted White Part 99780 Element 6548278 or 6070698 ×4
  • Plate Special 1 x 2 [Side Handle Closed Ends] White Part 48336 Element 6552125 or 4222017 ×1
  • Plate Special 1 x 2, Top Clip [Split] White Part 92280 Element 4598527 ×2
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Solid Anti-stud] White Part 99206 Element 6046979 ×2

Plates 18 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate 2 x 4 Black Part 3020 Element 302026 ×1
  • Plate 1 x 6 Bright Light Orange Part 3666 Element 6020074 ×1
  • Plate 2 x 6 Bright Light Orange Part 3795 Element 6097509 ×2
  • Plate 1 x 2 Dark Azure Part 3023 Element 4653988 ×2
  • Plate 2 x 16 Light Bluish Gray Part 4282 Element 4211486 ×1
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×4
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×4
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×1

Bricks Sloped 8 pieces

  • Brick Sloped 30° 1 x 2 x 2/3 Dark Azure Part 85984 Element 6151663 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Light Bluish Gray Part 54200 Element 4521921 or 4244372 1 spare in the box ×1
  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate White Part 61409 Element 6552142 or 6023804 ×2
  • Brick Sloped 30° 1 x 2 x 2/3 White Part 85984 Element 6550189 or 4547489 ×1
  • Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] White Part 15672 Element 6552150 or 6550153 ×2

Wheels and Tyres 8 pieces

  • Tyre 24 x 14 Shallow Tread (Tread Small Hub), Band Around Center of Tread Black Part 89201 Element 6132299 or 4639695 ×4
  • Wheel 18mm x 14mm with Axle Hole, Fake Bolts and Shallow Spokes White Part 55982 Element 6092256 or 4490128 ×4

Bricks Curved 7 pieces

  • Brick Curved 2 x 1 No Studs [1/2 Bow] Bright Light Orange Part 11477 Element 6099728 ×2
  • Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] Dark Azure Part 11153 Element 6151667 ×4
  • Brick Curved 2 x 2 x 2/3 White Part 15068 Element 6552147 or 6047220 ×1

Plates Round Curved and Dishes 7 pieces

  • Plate Round 1 x 1 with Solid Stud Flat Silver Part 6141 Element 4633691 1 spare in the box ×4
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 1 spare in the box ×2
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] White Part 2654 Element 6601843 or 6552259 ×1

Tiles Special 7 pieces

  • Tile Special 1 x 2 with Handle Dark Azure Part 2432 Element 6209772 ×2
  • Tile Special 1 x 1 with Clip with Rounded Edges Dark Bluish Gray Part 15712 Element 6344022 or 6071226 ×4
  • Tile Special 2 x 3 with 2 Clips [Thick Open O Clips] White Part 30350b Element 4599983 or 4142078 ×1

Plates Wedged 6 pieces

  • Wedge Plate 3 x 2 Left Bright Light Orange Part 43723 Element 6020145 ×1
  • Wedge Plate 3 x 2 Right Bright Light Orange Part 43722 Element 6020146 ×1
  • Wedge Plate 2 x 2 Left Dark Azure Part 24299 Element 6145416 ×2
  • Wedge Plate 2 x 2 Right Dark Azure Part 24307 Element 6145418 ×2

Bricks 4 pieces

  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×4

Bricks Special 4 pieces

  • Bracket 5 x 2 x 1 1/3 with Holes, Pin Bottom White Part 11215 Element 6053026 ×2
  • Brick Special 1 x 2 with Grille White Part 2877 Element 6552093 or 287701 ×2

Technic Bricks 4 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Dark Bluish Gray Part 3700 Element 4211111 ×2
  • Technic Brick 1 x 4 [3 Pin Holes] Dark Bluish Gray Part 3701 Element 4213607 or 370127 ×2

Technic Bushes 4 pieces

  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×4

Bars, Ladders and Fences 2 pieces

  • Bar 1 x 3 [Clip / Anti-Stud] Black Part 4735 Element 4141580 or 473576 ×2

Bricks Wedged 2 pieces

  • Brick Wedged, Curved 4 x 2 x 1 1/3 with 1 x 4 Base [Plain] White Part 93589 Element 6208569 or 4613126 ×1
  • Brick Wedged, Sloped 45° 2 x 4 Triple White Part 47759 Element 6160214 or 4622545 ×1

Technic Axles 2 pieces

  • Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×2

Technic Pins 2 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×2

Tiles 2 pieces

  • Tile 1 x 2 with Groove Dark Azure Part 3069b Element 6151659 ×2

Transportation - Land 2 pieces

  • Steering Wheel Small, 2 x 2 [Reinforced] Black Part 16091 Element 6057397 ×1
  • Engine / Air Scoop 2 x 2 Flat Silver Part 50943 Element 6076604 ×1

Pneumatics 1 piece

  • Pneumatic T-Piece (T Bar) [New Style] Light Bluish Gray Part 4697b Element 4211508 1 spare in the box ×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.