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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.

Moulding Machines

Checking

4000001 Moulding Machines

795 pieces in 188 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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

7 more look-alike pairs
  • Plate 1 x 3 Black ×3 Dark Bluish Gray ×10 Black is darker than Dark Bluish Gray.
  • Plate 2 x 2 Black ×3 Dark Bluish Gray ×5 Black is darker than Dark Bluish Gray.
  • Plate 2 x 3 Black ×2 Dark Bluish Gray ×8 Black is darker than Dark Bluish Gray.
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black ×9 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.
  • Technic Brick 1 x 4 [3 Pin Holes] Black ×2 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.
  • Tile 1 x 1 with Groove Black ×6 Dark Bluish Gray ×12 Black is darker than Dark Bluish Gray.
  • Tile 1 x 2 with Groove Black ×9 Dark Bluish Gray ×6 Black is darker than Dark Bluish Gray.
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Piece checklist

Plates 192 pieces

  • Plate 1 x 1 Black Part 3024 Element 302426 Also in Dark Bluish Gray ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 Also in Dark Bluish Gray ×7
  • Plate 1 x 3 Black Part 3623 Element 362326 Also in Dark Bluish Gray ×3
  • Plate 2 x 2 Black Part 3022 Element 302226 Also in Dark Bluish Gray ×3
  • Plate 2 x 3 Black Part 3021 Element 302126 Also in Dark Bluish Gray ×2
  • Plate 4 x 10 Black Part 3030 Element 303076 or 303026 ×1
  • Plate 1 x 1 Dark Bluish Gray Part 3024 Element 4210719 Also in Black ×7
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 Also in Black ×14
  • Plate 1 x 3 Dark Bluish Gray Part 3623 Element 4211133 Also in Black ×10
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 ×5
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 Also in Black ×5
  • Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 Also in Black ×8
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×3
  • Plate 2 x 6 Dark Bluish Gray Part 3795 Element 4211002 ×2
  • Plate 2 x 8 Dark Bluish Gray Part 3034 Element 4210997 ×4
  • Plate 6 x 14 Dark Bluish Gray Part 3456 Element 4210720 ×2
  • Plate 6 x 8 Dark Bluish Gray Part 3036 Element 4210794 ×4
  • Plate 1 x 1 Green Part 3024 Element 302428 ×2
  • Plate 1 x 2 Green Part 3023 Element 302328 ×4
  • Plate 1 x 4 Green Part 3710 Element 371028 ×20
  • Plate 1 x 6 Green Part 3666 Element 366628 ×13
  • Plate 1 x 8 Green Part 3460 Element 346028 ×11
  • Plate 2 x 2 Green Part 3022 Element 302228 ×3
  • Plate 2 x 2 Corner Green Part 2420 Element 4157120 or 242028 ×4
  • Plate 2 x 3 Green Part 3021 Element 302128 ×1
  • Plate 2 x 4 Green Part 3020 Element 302028 ×5
  • Plate 2 x 6 Green Part 3795 Element 379528 ×3
  • Plate 6 x 8 Green Part 3036 Element 4507311 or 303678 ×1
  • Plate 1 x 1 Light Bluish Gray Part 3024 Element 4211399 ×3
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×3
  • Plate 1 x 6 Light Bluish Gray Part 3666 Element 4211438 ×2
  • Plate 1 x 8 Light Bluish Gray Part 3460 Element 4211425 ×9
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×3
  • Plate 2 x 6 Light Bluish Gray Part 3795 Element 4211452 or 3795194 ×3
  • Plate 2 x 8 Light Bluish Gray Part 3034 Element 4211406 ×3
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×2
  • Plate 1 x 1 Trans-Clear Part 3024 Element 6513962 or 6252041 ×2
  • Plate 1 x 2 Trans-Clear Part 3023 Element 6514001 or 6240204 ×2
  • Plate 1 x 1 Yellow Part 3024 Element 302424 ×2
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×7
  • Plate 2 x 3 Yellow Part 3021 Element 302124 ×1
  • Plate 4 x 4 Yellow Part 3031 Element 4243817 or 303124 ×1

Bricks 153 pieces

  • Brick 1 x 3 Black Part 3622 Element 362226 Also in Dark Bluish Gray ×8
  • Brick 1 x 1 Dark Bluish Gray Part 3005 Element 4211098 ×2
  • Brick 1 x 2 Dark Bluish Gray Part 3004 Element 4211088 ×5
  • Brick 1 x 3 Dark Bluish Gray Part 3622 Element 4211104 Also in Black ×3
  • Brick 1 x 4 Dark Bluish Gray Part 3010 Element 4211103 ×2
  • Brick 2 x 2 Corner Dark Bluish Gray Part 2357 Element 4211109 ×4
  • Brick 2 x 3 Dark Bluish Gray Part 3002 Element 4211105 ×2
  • Brick 1 x 1 Green Part 3005 Element 300528 ×4
  • Brick 1 x 2 Green Part 3004 Element 4107736 or 300428 ×10
  • Brick 1 x 3 Green Part 3622 Element 4109679 or 362228 ×4
  • Brick 1 x 4 Green Part 3010 Element 4112838 or 301028 ×6
  • Brick 1 x 6 Green Part 3009 Element 4111844 or 300928 ×11
  • Brick 1 x 8 Green Part 3008 Element 4143953 or 4112839 ×7
  • Brick 2 x 4 Green Part 3001 Element 4106356 or 300128 ×7
  • Brick 2 x 6 Green Part 2456 Element 4181135 or 4142867 ×1
  • Brick 1 x 1 Light Bluish Gray Part 3005 Element 4211389 ×11
  • Brick 1 x 2 Light Bluish Gray Part 3004 Element 4211388 ×17
  • Brick 1 x 6 Light Bluish Gray Part 3009 Element 4211393 ×11
  • Brick 1 x 8 Light Bluish Gray Part 3008 Element 4211392 ×16
  • Brick 2 x 2 Corner Light Bluish Gray Part 2357 Element 4211349 ×3
  • Brick 2 x 6 Light Bluish Gray Part 2456 Element 4274668 or 4211795 ×1
  • Brick 2 x 3 Tan Part 3002 Element 4159739 or 300205 ×5
  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×13

Tiles 134 pieces

  • Tile 1 x 1 with Groove Black Part 3070b Element 307026 Also in Dark Bluish Gray ×6
  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 Also in Dark Bluish Gray ×9
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×3
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×8
  • Tile 2 x 4 with Groove Black Part 87079 Element 4560182 ×8
  • Tile 1 x 1 with Groove Dark Bluish Gray Part 3070b Element 4210848 Also in Black ×12
  • Tile 1 x 2 with Groove Dark Bluish Gray Part 3069b Element 4211052 Also in Black ×6
  • Tile 1 x 3 Dark Bluish Gray Part 63864 Element 4568734 ×3
  • Tile 1 x 1 with Groove Green Part 3070b Element 4558593 or 4238528 ×4
  • Tile 1 x 2 with Groove Green Part 3069b Element 306928 ×14
  • Tile 1 x 4 with Groove Green Part 2431 Element 243128 ×8
  • Tile 1 x 8 with Groove Green Part 4162 Element 4296081 or 4238505 ×5
  • Tile 2 x 2 with Groove Green Part 3068b Element 4107762 or 306828 ×4
  • Tile 1 x 2 with Groove Light Bluish Gray Part 3069b Element 4211414 ×4
  • Tile 1 x 4 with Groove Light Bluish Gray Part 2431 Element 4211356 or 2431194 ×4
  • Tile 1 x 6 with Groove Light Bluish Gray Part 6636 Element 4211549 ×7
  • Tile 2 x 4 with Groove Light Bluish Gray Part 87079 Element 4560183 ×2
  • Tile 1 x 2 with Groove Trans-Clear Part 3069b Element 6514223 or 6251294 ×14
  • Tile 2 x 4 with Groove White Part 87079 Element 6548271 or 4560178 ×7
  • Tile 1 x 8 with Groove Yellow Part 4162 Element 6388482 or 4189400 ×2
  • Tile 2 x 4 with Groove Yellow Part 87079 Element 6388490 or 4560181 ×4

Bricks Sloped 55 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 Also in Dark Bluish Gray ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Bluish Gray Part 54200 Element 4504378 or 4244373 Also in Black ×5
  • Brick Sloped 30° 1 x 2 x 2/3 Dark Bluish Gray Part 85984 Element 4567887 ×2
  • Brick Sloped 45° 2 x 2 Dark Bluish Gray Part 3039 Element 4211054 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Green Part 54200 Element 4546705 or 4503118 ×19
  • Brick Sloped 33° 3 x 1 Green Part 4286 Element 4107637 or 428628 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Green Part 3040b Element 4121969 or 4109668 ×1
  • Brick Sloped 45° 2 x 2 Green Part 3039 Element 303928 ×2
  • Brick Sloped 75° 2 x 2 x 3 [Hollow Studs] Green Part 3684 Element 4248067 or 4220027 ×4
  • Brick Sloped Inverted 45° 2 x 1 Green Part 3665 Element 4142989 or 4119659 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Green Part 3660 Element 4142717 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Light Bluish Gray Part 3660 Element 4211436 ×9
  • Brick Sloped 45° 2 x 4 Yellow Part 3037 Element 4219911 or 303724 ×4

Plates Round Curved and Dishes 54 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 Also in Dark Bluish Gray ×9
  • Plate Round 1 x 1 with Solid Stud Blue Part 6141 Element 614123 ×6
  • Plate Round 1 x 1 with Solid Stud Dark Bluish Gray Part 6141 Element 4210633 ×6
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Bluish Gray Part 4032a Element 4211042 Also in Black ×2
  • Plate Round 1 x 1 with Solid Stud Orange Part 6141 Element 4157103 Also in Trans-Neon Orange ×16
  • Plate Round 1 x 1 with Solid Stud Red Part 6141 Element 614121 Also in Trans-Red ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Clear Part 6141 Element 6514052 or 6240030 ×4
  • Plate Round 1 x 1 with Solid Stud Trans-Dark Blue Part 6141 Element 6514055 or 6240214 ×3
  • Plate Round 1 x 1 with Solid Stud Trans-Neon Orange Part 6141 Element 6240218 or 3005747 Also in Orange ×3
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 Also in Red ×3

Plates Special 44 pieces

  • Plate Special 1 x 2 [Side Handle Closed Ends] Black Part 48336 Element 4225201 ×1
  • Bracket 1 x 2 - 2 x 2 Dark Bluish Gray Part 44728 Element 6117972 or 6048854 ×2
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Dark Bluish Gray Part 60897 Element 6489464 or 6296892 ×14
  • Plate Special 1 x 2 Side Handle [Free Ends] Dark Bluish Gray Part 2540 Element 4210660 ×3
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm] Dark Bluish Gray Part 88072 Element 6261355 or 4611703 ×1
  • Bracket 1 x 2 - 2 x 2 Green Part 44728 Element 6117971 or 6048853 ×4
  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) Green Part 3794b Element 379428 ×2
  • Bracket 2 x 2 - 2 x 2 Light Bluish Gray Part 3956 Element 6254807 or 6019212 ×1
  • Plate Special 1 x 2 with Clip Horizontal on End Light Bluish Gray Part 63868 Element 6319336 or 4535738 ×2
  • Plate Special 1 x 4 with Bar Down Light Bluish Gray Part 30043 Element 6173095 or 4261605 ×1
  • Plate Special 2 x 8 with Door Rail Light Bluish Gray Part 30586 Element 4222019 ×6
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Red Part 4081b Element 6281994 or 4632572 ×2
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Red Part 60897 Element 6337002 or 4588003 ×1
  • Bracket 1 x 2 - 2 x 2 Yellow Part 44728 Element 6117938 or 4615642 ×4

Technic Bricks 22 pieces

  • Technic Brick 1 x 16 [15 Pin Holes] Black Part 3703 Element 370326 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×1
  • Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 Also in Dark Bluish Gray ×2
  • Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×2
  • Technic Brick 1 x 8 [7 Pin Holes] Black Part 3702 Element 370226 ×1
  • Technic Brick 1 x 4 [3 Pin Holes] Dark Bluish Gray Part 3701 Element 4213607 or 370127 Also in Black ×2
  • Technic Brick 1 x 1 with Pin Hole Green Part 6541 Element 4542190 or 4522678 ×2
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Green Part 32064b ×2
  • Technic Brick 1 x 4 [3 Pin Holes] Light Bluish Gray Part 3701 Element 4211441 ×7
  • Technic Brick 1 x 8 [7 Pin Holes] Light Bluish Gray Part 3702 Element 4211442 ×2

Panels 21 pieces

  • Panel 1 x 1 x 1 Corner Red Part 6231 Element 4190219 or 623121 ×4
  • Panel 1 x 2 x 2 [Hollow Studs] Trans-Clear Part 4864b Element 4113028 ×12
  • Panel 1 x 4 x 3 [Side Supports / Hollow Studs] Trans-Clear Part 60581 Element 6514156 or 6344088 ×1
  • Panel 1 x 6 x 5 Trans-Clear Part 59349 Element 6514106 or 6245253 ×2
  • Panel 1 x 4 x 1 with Rounded Corners [Thick Wall] White Part 43337 Element 4173477 ×2

Technic Pins 20 pieces

  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×5
  • Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×2
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×4
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×4
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 ×1
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×4

Bars, Ladders and Fences 14 pieces

  • Bar 4L (Lightsaber Blade / Wand) Black Part 30374 Element 6116604 or 4140303 ×2
  • Lever Small Base with Black Lever Black Part 298c02 Element 73587 ×1
  • Bar 4L (Lightsaber Blade / Wand) Light Bluish Gray Part 30374 Element 6116608 or 4211628 ×3
  • Bar 6L with Stop Ring Light Bluish Gray Part 63965 Element 6170418 or 6081975 ×4
  • Antenna 1 x 4 with Rounded Top Trans-Neon Green Part 3957a ×4

Bricks Round and Cones 13 pieces

  • Brick Round 2 x 2 with Axle Hole Green Part 3941 Element 4251378 or 4239200 ×2
  • Brick Round 2 x 2 [Grill] Light Bluish Gray Part 92947 Element 4650645 or 4610816 ×2
  • Cone 1 x 1 [Top Groove] Light Bluish Gray Part 59900 Element 4529241 ×3
  • Cone 2 x 2 x 2, Open Stud Light Bluish Gray Part 3942c Element 6404367 or 6057616 ×1
  • Brick Round 2 x 2 with Axle Hole Orange Part 3941 Element 4141089 ×1
  • Brick Round 1 x 1 Open Stud Trans-Clear Part 3062b Element 6514232 or 6223655 ×2
  • Brick Round 2 x 2 with Axle Hole Trans-Clear Part 3941 Element 6514281 or 6273152 ×2

Bricks Special 13 pieces

  • Brick Special 1 x 1 with Stud on 1 Side Black Part 87087 Element 4558954 ×4
  • Brick Special 1 x 4 with 4 Studs on One Side Dark Bluish Gray Part 30414 Element 4210725 ×3
  • Brick Special 1 x 1 with Stud on 1 Side White Part 87087 Element 6550190 or 4558952 ×4
  • Brick Special 1 x 1 x 3 with 2 Clips Vertical [Solid Stud, Thick U Clips] Yellow Part 60583a ×2

Technic Bushes 13 pieces

  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 ×10
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 ×3

Technic Axles 10 pieces

  • Technic Axle 12 Black Part 3708 Element 370826 ×2
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×5
  • Technic Axle 5.5 with Stop [Rounded Short End] Dark Bluish Gray Part 59426 Element 4508553 ×2
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×1

Tiles Special 9 pieces

  • Tile Special 1 x 1 with Clip and Straight Tips Black Part 2555 Element 255526 ×8
  • Tile Special 2 x 2 with Bar, Hollow Stud with Stop Ring (Flag Pole) Light Bluish Gray Part 98549 Element 6170708 or 6003098 ×1

Technic Beams 8 pieces

  • Technic Beam 1 x 4 Thin Dark Bluish Gray Part 32449 Element 6327561 or 4210749 ×2
  • Technic Beam 3 x 3 T-Shape Thick Dark Bluish Gray Part 60484 Element 4552349 or 4535773 ×1
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Light Bluish Gray Part 60483 Element 6265089 or 6004888 ×1
  • Technic Beam 1 x 3 Thin Light Bluish Gray Part 6632 Element 6360043 or 4211566 ×2
  • Technic Beam 1 x 4 Thin Red Part 32449 Element 6330205 or 4141811 ×2

Technic Connectors 5 pieces

  • Technic Axle Connector Smooth [with x Hole + Orientation] Black Part 59443 Element 6084612 or 4512363 ×1
  • Technic Axle Connector with Axle Hole Light Bluish Gray Part 32039 Element 4211553 ×1
  • Technic Axle and Pin Connector Angled #3 - 157.5° Light Bluish Gray Part 32016 Element 6261387 or 4211552 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Light Bluish Gray Part 32184 Element 6276969 or 4211621 ×2

Hinges, Arms and Turntables 4 pieces

  • Hinge Brick 2 x 2 Top Plate Thin Blue Part 6134 Element 4195007 or 4118900 ×2
  • Hinge Brick 1 x 2 Base Red Part 3937 Element 393721 ×2

Minifig Accessories 4 pieces

  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Black Part 64644 Element 4538456 ×1
  • Tap 1 x 1 without Hole in Spout Black Part 4599b Element 459926 ×3

Windows and Doors 2 pieces

  • Door 1 x 3 x 4 Left - Open Between Top and Bottom Hinge Light Bluish Gray Part 58381 Element 6608289 or 4617109 ×1
  • Door 1 x 3 x 4 Right - Open Between Top and Bottom Hinge Light Bluish Gray Part 58380 Element 6608287 or 4617168 ×1

Containers 1 piece

  • Box / Crate with Handholds 3 x 4 x 1 2/3 Yellow Part 30150 Element 4599378 ×1

Minifig Neckwear 1 piece

  • Minifig Neckwear Bracket [One Stud] Dark Bluish Gray Part 42446 Element 4210469 ×1

Stickers 1 piece

  • Sticker Sheet for Set 4000001-1 [No Color/Any Color] Part 74454 Element 4657324 ×1

String, Bands and Reels 1 piece

  • Rubber Belt Small [15mm ID] [Round Cross Section] White Part 85543 Element 6699001 or 4580665 ×1

Tiles Round and Curved 1 piece

  • Tile Round 2 x 2 with Fine Mesh Grill Print Light Bluish Gray Part 4150pr0022 Element 4221881 ×1

Tick each piece as you find it, or mark it missing.

When a piece really is missing

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