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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.

Introducing Crater Critters

Checking

1785 Introducing Crater Critters

146 pieces in 66 part and color combinations.

LEGO counts 143 pieces. This inventory comes from a separate parts catalog and lists 146; the two do not always count the same elements, so their totals differ. 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

Hinges, Arms and Turntables 34 pieces

  • Hinge Bar 2.5L with 2 and 3 Fingers on Ends (Pantograph Shoe Holder) Black Part 2923 Element 292326 ×4
  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Black Part 4276b Element 4264363 or 4256402 ×4
  • 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 ×4
  • Turntable 2 x 2 Plate, Base Black Part 3680 Element 368076 or 368026 ×2
  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Blue Part 4276b Element 4238854 or 4114247 ×6
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] Blue Part 4275b Element 4239024 or 427523 ×4
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Light Gray Part 73983 Element 74066 ×2
  • Turntable 2 x 2 Plate - Top Light Gray Part 3679 Element 367952 or 367902 ×2
  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Red Part 4276b Element 4238277 or 427621 ×3
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Red Part 73983 Element 6102786 or 74230 ×2

Bricks Sloped 20 pieces

  • Brick Sloped 33° 3 x 4 Black Part 3297 Element 6435854 or 329726 ×1
  • Brick Sloped 45° 2 x 1 with Bottom pin, with 9 Large + 3 Small White Buttons Print Black Part 3040bpr0011 Element 4251811 or 4121975 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×1
  • Brick Sloped 75° 2 x 2 x 3 [Hollow Studs] Blue Part 3684 Element 4248061 or 4219959 ×1
  • Brick Sloped 45° 2 x 2 Light Gray Part 3039 Element 303902 ×1
  • Brick Sloped 75° 2 x 2 x 3 [Hollow Studs] Light Gray Part 3684 Element 4248057 or 4143978 ×3
  • Brick Sloped Inverted 45° 2 x 1 Light Gray Part 3665 Element 366502 ×2
  • Brick Sloped Inverted 45° 2 x 2 Double Convex Light Gray Part 3676 Element 4186669 or 367602 ×4
  • Brick Sloped Inverted 75° 2 x 1 x 3 Light Gray Part 2449 Element 4160952 or 244952 ×2
  • Brick Sloped 33° 3 x 2 Red Part 3298 Element 329821 ×1
  • Brick Sloped Inverted 75° 2 x 1 x 3 Red Part 2449 Element 4501534 or 4280141 ×2

Plates Round Curved and Dishes 18 pieces

  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 ×2
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Black Part 2654 Element 4617551 or 4278359 ×2
  • Dish 2 x 2 Inverted [Radar] Light Gray Part 4740 Element 474002 ×2
  • Dish 4 x 4 Inverted [Radar] Light Gray Part 3960 Element 4143013 or 396002 ×2
  • Plate Round 1 x 1 with Solid Stud Red Part 6141 Element 614121 ×4
  • Dish 2 x 2 Inverted [Radar] Trans-Neon Green Part 4740 Element 6245297 or 4112517 ×3
  • Plate Round 1 x 1 with Solid Stud Trans-Neon Green Part 6141 Element 6240223 or 3005749 ×3

Plates Special 13 pieces

  • Plate Special 1 x 2 Side Handle [Free Ends] Black Part 2540 Element 4140588 or 254026 ×2
  • Plate Special 1 x 2 with Long Stud Receptacle (Space Wing) Black Part 4596 Element 459626 ×2
  • Plate Special 1 x 4 Offset with Bar Holes Black Part 4590 Element 6002559 or 4278029 ×1
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Black Part 2444 Element 244426 ×4
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Blue Part 3794a ×1
  • Bracket 2 x 2 - 2 x 2 Light Gray Part 3956 Element 395602 ×3

Plates Wedged 13 pieces

  • Wedge Plate 3 x 3 Cut Corner Black Part 2450 Element 4227684 or 245026 ×5
  • Wedge Plate 3 x 6 Cut Corners Black Part 2419 Element 241926 ×2
  • Wedge Plate 3 x 6 Cut Corners Blue Part 2419 Element 241923 ×2
  • Wedge Plate 3 x 3 Cut Corner Light Gray Part 2450 Element 245002 ×4

Plates 11 pieces

  • Plate 1 x 4 Black Part 3710 Element 371026 ×2
  • Plate 2 x 4 Black Part 3020 Element 302026 ×2
  • Plate 1 x 6 Blue Part 3666 Element 366623 ×1
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×2
  • Plate 2 x 3 Light Gray Part 3021 Element 302102 ×1
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×1
  • Plate 4 x 6 Light Gray Part 3032 Element 303202 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×1

Bars, Ladders and Fences 6 pieces

  • Bar 1 x 3 [Clip / Anti-Stud] Black Part 4735 Element 4141580 or 473576 ×4
  • Lever Small Base with Black Lever Black Part 298c02 Element 73587 ×2

Bricks Round and Cones 6 pieces

  • Cone 4 x 4 x 2, Axle Hole [Plain] Black Part 3943b Element 4143243 or 394326 ×2
  • Brick Round 2 x 2 with Axle Hole Light Gray Part 3941 Element 614302 or 394102 ×4

Minifig Accessories 5 pieces

  • Equipment Camera with Side Sight [aka Space Gun] Light Gray Part 4360 Element 4143342 or 436002 ×1
  • Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Red Part 4349 Element 434921 ×4

Technic Pins 4 pieces

  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×4

Tiles 4 pieces

  • Tile 1 x 2 with Blue Screen, Red and Silver Panel Print Black Part 3069bpr0040 Element 82058 ×1
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×1
  • Tile 2 x 2 with Blue Screen, Silver and Red Panel Print Black Part 3068bpr0059 Element 82117 ×1
  • Tile 2 x 2 with Groove Red Part 3068b Element 306821 ×1

Wheels and Tyres 4 pieces

  • Wheel Hard Plastic Small (22mm D. x 24mm) Black Part 6118 Element 4106928 or 611876 ×4

Panels 2 pieces

  • Panel 1 x 2 x 3 - Solid Studs Light Gray Part 2362a Element 4113023 ×2

Tiles Special 2 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×1
  • Tile Special 1 x 2 with Handle Black Part 2432 Element 243226 ×1

Bricks 1 piece

  • Brick 2 x 6 Light Gray Part 2456 Element 4271438 or 4259892 ×1

Bricks Special 1 piece

  • Brick Special 2 x 4 x 2 with Studs on Sides Black Part 2434 Element 4494850 or 4201520 ×1

Supports, Girders and Cranes 1 piece

  • Hook, Plate 1 x 2 with Crane Hook Left Light Gray Part 3127 Element 312702 ×1

Transportation - Sea and Air 1 piece

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