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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.

Crater Cruiser

Checking

1787 Crater Cruiser

171 pieces in 85 part and color combinations, plus 2 minifigures.

The official piece count includes the 12 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

Plates 34 pieces

  • 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 ×1
  • Plate 1 x 8 Black Part 3460 Element 346026 ×2
  • Plate 2 x 10 Black Part 3832 Element 383226 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×2
  • Plate 2 x 4 Black Part 3020 Element 302026 ×3
  • Plate 2 x 8 Black Part 3034 Element 303426 ×1
  • Plate 4 x 8 Black Part 3035 Element 303526 ×1
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×2
  • Plate 1 x 3 Blue Part 3623 Element 362323 ×2
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×1
  • Plate 2 x 2 Corner Blue Part 2420 Element 242073 or 242023 ×2
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×1
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×1
  • Plate 2 x 10 Light Gray Part 3832 Element 383202 ×1
  • Plate 2 x 2 Light Gray Part 3022 Element 302202 ×2
  • Plate 2 x 3 Light Gray Part 3021 Element 302102 ×2
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×2
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×1

Plates Round Curved and Dishes 21 pieces

  • Dish 4 x 4 Inverted [Radar] Black Part 3960 Element 396026 ×1
  • Dish 6 x 6 Inverted, Radar / Webbed [Anti-studs at 90°] Black Part 4285b Element 6603362 or 4509865 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Gray Part 4032a Element 403202 ×1
  • Dish 4 x 4 Inverted [Radar] Trans-Dark Blue Part 3960 Element 4218661 or 3006543 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Dark Blue Part 6141 Element 6514055 or 6240214 ×2
  • Dish 2 x 2 Inverted [Radar] Trans-Neon Green Part 4740 Element 6245297 or 4112517 ×4
  • Plate Round 1 x 1 with Solid Stud Trans-Neon Green Part 6141 Element 6240223 or 3005749 ×10

Bricks Sloped 18 pieces

  • Brick Sloped 33° 3 x 1 Black Part 4286 Element 428626 ×2
  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×1
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Black Part 3747a ×5
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper Blue Part 4287a ×2
  • Brick Sloped Inverted 45° 2 x 1 Blue Part 3665 Element 366523 ×2
  • Brick Sloped 33° 3 x 1 Light Gray Part 4286 Element 428602 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Light Gray Part 3040b Element 4121933 or 304002 ×2
  • Brick Sloped 45° 2 x 2 Light Gray Part 3039 Element 303902 ×2

Bricks 14 pieces

  • Brick 1 x 12 Black Part 6112 Element 611226 ×1
  • Brick 1 x 2 Black Part 3004 Element 300426 ×2
  • Brick 1 x 4 Black Part 3010 Element 301026 ×3
  • Brick 2 x 4 Black Part 3001 Element 300126 ×1
  • Brick 1 x 12 Blue Part 6112 Element 6305460 or 6175821 ×2
  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×1
  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×2
  • Brick 1 x 4 Light Gray Part 3010 Element 301002 ×1
  • Brick 2 x 6 Light Gray Part 2456 Element 4271438 or 4259892 ×1

Hinges, Arms and Turntables 14 pieces

  • Hinge Bar with 3 Fingers and End Stud (Control Lever) Black Part 2433 Element 4497182 or 243326 ×2
  • Hinge Brick 1 x 2 Base Black Part 3937 Element 393726 ×1
  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Black Part 4276b Element 4264363 or 4256402 ×2
  • Hinge Plate 1 x 2 with 3 Fingers On Side Black Part 2452 Element 245226 ×1
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] Black Part 4275b Element 427526 ×2
  • Hinge Tile 1 x 2 1/2 with 2 Fingers on Top Black Part 4531 Element 453126 ×1
  • Hinge Vehicle Roof Holder 1 x 4 Black Part 4315 Element 4250225 or 431576 ×2
  • Hinge Brick 1 x 2 Top Plate Thin Light Gray Part 3938 Element 393802 ×1
  • Hinge Tile 1 x 2 1/2 with 2 Fingers on Top Light Gray Part 4531 Element 4256463 or 4163772 ×2

Plates Special 14 pieces

  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Black Part 6019 Element 601976 or 601926 ×4
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Black Part 3794a ×2
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Black Part 2444 Element 244426 ×6
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Light Gray Part 3794a Element 379402 ×2

Bricks Round and Cones 9 pieces

  • Brick Round 2 x 2 x 2 with Axle Hole and Fins Black Part 4591 Element 459126 ×1
  • Cone 4 x 4 x 2, Axle Hole [Plain] Black Part 3943b Element 4143243 or 394326 ×1
  • Brick Round 2 x 2 with Axle Hole Light Gray Part 3941 Element 614302 or 394102 ×1
  • Cone 1 x 1 [No Top Groove] Trans-Neon Green Part 4589 Element 618849 or 458949 ×6

Tiles 8 pieces

  • Tile 2 x 2 with Blue Screen, Silver and Red Panel Print Black Part 3068bpr0059 Element 82117 ×2
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×1
  • Tile 1 x 4 with Groove Light Gray Part 2431 Element 243102 ×1
  • Tile 1 x 8 with Groove Light Gray Part 4162 Element 416202 ×2
  • Tile 1 x 1 with Groove Trans-Dark Blue Part 3070b Element 4541723 or 4218438 ×2

Plates Wedged 7 pieces

  • Wedge Plate 3 x 4 without Stud Notches Black Part 4859 ×2
  • Wedge Plate 3 x 6 Cut Corners Black Part 2419 Element 241926 ×2
  • Wedge Plate 3 x 4 without Stud Notches Light Gray Part 4859 ×1
  • Wedge Plate 3 x 6 Cut Corners Light Gray Part 2419 Element 241902 ×1
  • Wedge Plate 8 x 8 with 3 x 4 Cutout Light Gray Part 6104 Element 610402 ×1

Bars, Ladders and Fences 6 pieces

  • Antenna 1 x 4 with Rounded Top Black Part 3957a ×2
  • Antenna 8H Whip Trans-Neon Green Part 2569 Element 6265159 or 6164380 ×4

Technic Pins 6 pieces

  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×6

Tiles Special 6 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×4
  • Tile Special 1 x 2 Grille with Bottom Groove Light Gray Part 2412b Element 241202 ×2

Wheels and Tyres 6 pieces

  • Wheel Hard Plastic Large (54mm D. x 30mm) Black Part 2515 Element 6468516 or 6097664 ×2
  • Wheel Hard Plastic Medium (35mm D. x 31mm) Black Part 2593 Element 4106931 or 259376 ×2
  • Wheel Hard Plastic Small (22mm D. x 24mm) Black Part 6118 Element 4106928 or 611876 ×2

Transportation - Sea and Air 2 pieces

  • Engine, Strakes, 2 x 2 Thin Top Plate Black Part 4229 Element 4552040 or 4163480 ×2

Windscreens and Fuselage 2 pieces

  • Windscreen 10 x 4 x 2 1/3 Canopy Trans-Dark Blue Part 2507 Element 250793 or 250743 ×2

Bricks Special 1 piece

  • Bracket 8 x 2 x 1 1/3 Blue Part 4732 Element 473223 ×1

Bricks Wedged 1 piece

  • Brick Wedged, Sloped Inverted 6 x 4 with 2 Stud Connections Black Part 4856a Element 4585334 or 4226506 ×1

Panels 1 piece

  • Panel 1 x 2 x 1 [Square Corners] Light Gray Part 4865a Element 486502 ×1

Technic Bricks 1 piece

  • Technic Brick 1 x 2 [1 Pin Hole] Blue Part 3700 Element 370023 ×1

Minifigures 2 figures

  • Unitron Minifigure, checked as a whole figure ×1
  • Unitron Chief 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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