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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.

LEGO Factory AGV

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4000037 LEGO Factory AGV

803 pieces in 184 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.

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Piece checklist

Tiles 192 pieces

  • Tile 1 x 3 Black Part 63864 Element 4558170 Also in Dark Bluish Gray ×6
  • Tile 1 x 6 with Groove Black Part 6636 Element 663626 Also in Dark Blue ×1
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 Also in Dark Blue ×6
  • Tile 2 x 3 Black Part 26603 Element 6162892 ×2
  • Tile 1 x 1 with Groove Blue Part 3070b Element 4206330 or 307073 ×2
  • Tile 1 x 2 with Groove Blue Part 3069b Element 306923 ×8
  • Tile 2 x 2 with Groove Blue Part 3068b Element 306823 ×21
  • Tile 2 x 3 Blue Part 26603 Element 6196596 ×7
  • Tile 2 x 4 with Groove Blue Part 87079 Element 4654678 or 4560180 ×2
  • Tile 1 x 1 with Groove Dark Blue Part 3070b Element 6554193 or 4631385 ×2
  • Tile 1 x 6 with Groove Dark Blue Part 6636 Element 4252437 Also in Black ×4
  • Tile 1 x 8 with Groove Dark Blue Part 4162 Element 4507080 or 4264587 Also in Black ×4
  • Tile 1 x 2 with Groove Dark Bluish Gray Part 3069b Element 4211052 ×33
  • Tile 1 x 3 Dark Bluish Gray Part 63864 Element 4568734 Also in Black ×2
  • Tile 2 x 2 Corner Dark Bluish Gray Part 14719 Element 6247784 ×8
  • Tile 2 x 2 with Groove Dark Bluish Gray Part 3068b Element 4211055 ×10
  • Tile 2 x 4 with Groove Dark Bluish Gray Part 87079 Element 4560184 ×23
  • Tile 1 x 2 with Groove Light Bluish Gray Part 3069b Element 4211414 ×3
  • Tile 2 x 2 with Groove Light Bluish Gray Part 3068b Element 4211413 ×2
  • Tile 2 x 3 Red Part 26603 Element 6189130 ×2
  • Tile 2 x 4 with Groove Red Part 87079 Element 4560179 ×2
  • Tile 1 x 1 with Groove Tan Part 3070b Element 4125253 ×12
  • Tile 1 x 2 with Groove Tan Part 3069b Element 4114026 ×6
  • Tile 1 x 1 with Groove Trans-Orange Part 3070b Element 6514258 or 6254252 ×8
  • Tile 1 x 4 with Groove White Part 2431 Element 6548255 or 243101 ×1
  • Tile 1 x 1 with Groove Yellow Part 3070b Element 307024 ×4
  • Tile 1 x 4 with Black Diagonal Stripes Print Yellow Part 2431pr0158 Element 6329661 ×7
  • Tile 1 x 8 with Groove Yellow Part 4162 Element 6388482 or 4189400 ×4

Plates 176 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 Blue ×7
  • Plate 1 x 4 Black Part 3710 Element 371026 Also in Dark Blue ×2
  • Plate 1 x 6 Black Part 3666 Element 366626 ×2
  • Plate 2 x 2 Black Part 3022 Element 302226 ×4
  • Plate 2 x 3 Black Part 3021 Element 302126 ×2
  • Plate 1 x 1 Blue Part 3024 Element 302423 ×4
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×7
  • Plate 1 x 8 Blue Part 3460 Element 346023 ×4
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×10
  • Plate 6 x 12 Blue Part 3028 Element 6186644 or 302823 ×1
  • Plate 8 x 16 Blue Part 92438 Element 4610354 ×1
  • Plate 1 x 2 Dark Blue Part 3023 Element 6554191 or 4528981 Also in Black ×5
  • Plate 1 x 4 Dark Blue Part 3710 Element 4502089 or 4177739 Also in Black ×1
  • Plate 1 x 1 Dark Bluish Gray Part 3024 Element 4210719 Also in Black ×8
  • Plate 16 x 16 Dark Bluish Gray Part 91405 Element 6004927 ×1
  • Plate 8 x 16 Dark Bluish Gray Part 92438 Element 4654613 ×1
  • Plate 1 x 1 Light Bluish Gray Part 3024 Element 4211399 ×2
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×4
  • Plate 1 x 3 Light Bluish Gray Part 3623 Element 4211429 or 3623194 ×1
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×1
  • Plate 2 x 2 Corner Light Bluish Gray Part 2420 Element 4211353 ×4
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×2
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×2
  • Plate 1 x 1 Red Part 3024 Element 302421 ×5
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 1 x 4 Red Part 3710 Element 371021 ×2
  • Plate 2 x 10 Red Part 3832 Element 383221 ×2
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×8
  • Plate 2 x 4 Red Part 3020 Element 302021 ×3
  • Plate 1 x 1 Tan Part 3024 Element 4159553 or 302405 ×12
  • Plate 1 x 2 Tan Part 3023 Element 4113917 or 302305 ×12
  • Plate 1 x 6 Tan Part 3666 Element 4124067 or 366605 ×12
  • Plate 1 x 8 Tan Part 3460 Element 4114324 or 346005 ×12
  • Plate 2 x 2 Tan Part 3022 Element 4114084 or 302205 ×3
  • Plate 2 x 6 Tan Part 3795 Element 4113993 or 379505 ×6
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 ×4
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×3
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×3
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×1
  • Plate 4 x 10 White Part 3030 Element 6550137 or 4503008 ×2
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×2
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×2
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×2

Plates Special 77 pieces

  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Black Part 15573 Element 6092585 ×8
  • Plate Special 1 x 2 with Pin Hole on Top Black Part 11458 Element 6114987 ×8
  • Plate Special 2 x 2 with Only 2 studs Black Part 33909 Element 6192346 ×4
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Blue Part 15573 Element 6092582 ×4
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Blue Part 87580 Element 6126049 or 4565319 ×1
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Dark Blue Part 4081b Element 6328107 ×2
  • Bracket 1 x 2 - 2 x 2 Light Bluish Gray Part 44728 Element 6117967 or 6009014 ×4
  • Bracket 2 x 2 with 1 x 2 Vertical Studs Light Bluish Gray Part 41682 Element 6258820 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Light Bluish Gray Part 15573 Element 6066097 or 4211451 ×11
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm] Light Bluish Gray Part 88072 Element 6261353 or 4611702 ×1
  • Plate Special 1 x 4 with 2 Studs with Groove [New Underside] Light Bluish Gray Part 41740 Element 6257593 ×2
  • Plate Special 1 x 8 with Door Rail Light Bluish Gray Part 4510 Element 4211498 ×6
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Light Bluish Gray Part 87580 Element 6126082 or 4565393 ×3
  • Plate Special 3 x 4 with 1 x 4 Center Studs [Plain] Light Bluish Gray Part 88646 Element 6122124 or 6079461 ×16
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Red Part 87580 Element 6126048 or 4581308 ×1
  • Bracket 1 x 2 - 2 x 2 White Part 44728 Element 6619296 or 6117940 ×1
  • Plate Special 1 x 2 with Pin Hole on Top White Part 11458 Element 6632146 or 6057414 ×1
  • Plate Special 2 x 2 with 1 Pin Hole [Complete Underside Rib] White Part 10247 Element 6552149 or 6061024 ×1
  • Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper) Yellow Part 34103 Element 6228602 ×2

Plates Round Curved and Dishes 49 pieces

  • Plate Round 1 x 1 with Open Stud Black Part 85861 Element 6168646 or 6100627 ×4
  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 ×4
  • Plate Special 1 x 2 Rounded with 2 Open Studs Black Part 35480 Element 6210270 ×4
  • Plate Round 1 x 1 with Solid Stud Light Bluish Gray Part 6141 Element 4211525 ×24
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Light Bluish Gray Part 2654 Element 4278273 or 4276273 ×1
  • Plate Special 1 x 2 Rounded with 2 Open Studs Light Bluish Gray Part 35480 Element 6248890 ×2
  • Plate Round 1 x 1 with Open Stud White Part 85861 Element 6168642 or 4547649 ×2
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 ×3
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) White Part 4032a Element 6601914 or 403201 ×1
  • Plate Round 4 x 4 with Pin Hole White Part 60474 Element 6564904 or 4515347 ×1
  • Plate Special 1 x 2 Rounded with 2 Open Studs White Part 35480 Element 6552167 or 6550175 ×3

Technic Pins 48 pieces

  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 ×8
  • Technic Axle Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3749 Element 6485968 or 4211808 ×1
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 ×26
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 ×13

Bricks 38 pieces

  • Brick 1 x 1 x 3 Black Part 14716 Element 6065496 ×4
  • Brick 1 x 6 Black Part 3009 Element 300926 ×1
  • Brick 1 x 1 Blue Part 3005 Element 300523 ×6
  • Brick 1 x 10 Blue Part 6111 Element 6057905 or 4497172 ×2
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×2
  • Brick 1 x 2 x 2 with Inside Stud Holder Blue Part 3245c Element 6133724 ×10
  • Brick 1 x 4 Blue Part 3010 Element 301023 ×4
  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×2
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×1
  • Brick 2 x 8 Blue Part 3007 Element 6037384 or 300723 ×2
  • Brick 2 x 3 Yellow Part 3002 Element 300224 ×4

Bricks Special 38 pieces

  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×8
  • Brick Special 1 x 1 with Stud on 1 Side Blue Part 87087 Element 4583862 ×10
  • Brick Special 1 x 2 with Groove Blue Part 4216 Element 4519910 or 4264361 ×20

Technic Connectors 30 pieces

  • Technic Axle Connector Smooth [with x Hole + Orientation] Black Part 59443 Element 6084612 or 4512363 ×4
  • Technic Pin Connector Round 1L [Beam] Black Part 18654 Element 6121485 ×1
  • Technic Axle Connector Hub with 4 Bars at 90° Dark Bluish Gray Part 48723 Element 4222192 ×1
  • Technic Pin Connector Round [Slotted] Metallic Silver Part 62462 Element 6542283 or 6204673 ×24

Bricks Sloped 25 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Blue Part 54200 Element 4504380 or 4296154 ×6
  • Brick Sloped 45° 2 x 1 with Bottom Pin Blue Part 3040b Element 4121936 or 304023 ×2
  • Brick Sloped 45° 2 x 2 Blue Part 3039 Element 303923 ×4
  • Brick Sloped 65° 2 x 2 x 2 with Bottom Tube Blue Part 3678b Element 4653712 or 4549797 ×2
  • Brick Sloped Inverted 45° 2 x 1 Light Bluish Gray Part 3665 Element 4211437 ×1
  • Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no stud Red Part 28192 Element 6275178 ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Clear Part 54200 Element 6245250 or 4244362 ×2
  • Brick Sloped 30° 1 x 2 x 2/3 White Part 85984 Element 6550189 or 4547489 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin White Part 3040b Element 6552115 or 4121932 ×1
  • Brick Sloped Inverted 45° 2 x 1 White Part 3665 Element 6552106 or 366501 ×1

Technic Beams 16 pieces

  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×8
  • Technic Beam 1 x 3 Thin White Part 6632 Element 6360038 or 4107826 ×8

Tiles Round and Curved 15 pieces

  • Tile Round 1 x 1 Quarter Black Part 25269 Element 6172383 ×6
  • Tile Round 1 x 1 Blue Part 98138 Element 6284575 or 6009460 ×4
  • Tile Round 2 x 2 with Bottom Stud Holder Blue Part 14769 Element 6133844 ×3
  • Tile Round 1 x 1 White Part 98138 Element 6564903 or 6284572 ×1
  • Tile Round 2 x 2 with Bottom Stud Holder White Part 14769 Element 6601846 or 6044691 ×1

Containers 14 pieces

  • Box / Crate with Handholds 3 x 4 x 1 2/3 Bright Light Blue Part 30150 ×6
  • Box / Crate with Handholds 3 x 4 x 1 2/3 Dark Red Part 30150 Element 6310874 ×5
  • Box / Crate with Handholds 3 x 4 x 1 2/3 Red Part 30150 Element 6501669 or 4153878 ×1
  • Box / Crate with Handholds 3 x 4 x 1 2/3 Yellow Part 30150 Element 4599378 ×2

Tiles Special 12 pieces

  • Tile Special 1 x 1 with Clip with Rounded Edges Dark Bluish Gray Part 15712 Element 6344022 or 6071226 ×6
  • Tile Special 1 x 1 with Clip with Rounded Edges Light Bluish Gray Part 15712 Element 6308012 or 6071229 ×1
  • Tile Special Round 1 x 1 with Hollow Bar Light Bluish Gray Part 20482 Element 6258831 ×4
  • Tile Special 1 x 1 with Clip with Rounded Edges Red Part 15712 Element 6348058 or 6072998 ×1

Windows and Doors 10 pieces

  • Window 1 x 4 x 3 without Shutter Tabs Black Part 60594 Element 4530589 or 4520620 ×2
  • Door Frame 1 x 4 x 6 Type 2 Blue Part 60596 Element 6262960 or 6055101 ×4
  • Glass for Window 1 x 4 x 6 Blue Part 57895 ×4

Bricks Round and Cones 8 pieces

  • Brick Round 2 x 2 [Grill] Black Part 92947 Element 6024730 ×1
  • Brick Round 1 x 1 Open Stud Light Bluish Gray Part 3062b Element 4211412 ×4
  • Brick Round 2 x 2 Dome Top, Vented Stud Light Bluish Gray Part 3262 Element 6429052 ×1
  • Brick Round 2 x 2 [Grill] Light Bluish Gray Part 92947 Element 4650645 or 4610816 ×1
  • Brick Round 2 x 2 with Axle Hole Trans-Clear Part 3941 Element 6514281 or 6273152 ×1

Technic Axles 8 pieces

  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×8

Bars, Ladders and Fences 7 pieces

  • Bar 3L Black Part 87994 Element 6185316 or 6093525 ×1
  • Bar 4L (Lightsaber Blade / Wand) Black Part 30374 Element 6116604 or 4140303 ×1
  • Bar Holder with Clip Black Part 11090 Element 6315887 or 6015891 ×1
  • Bar Holder with Hole and Bar Handle Black Part 23443 Element 6321194 or 6143318 ×1
  • Light Cover with Internal Bar / Bionicle Barraki Eye with Hole in Bar Black Part 4278 Element 6448948 ×2
  • Bar 3L Light Bluish Gray Part 87994 Element 6093527 or 6064033 ×1

Hinges, Arms and Turntables 7 pieces

  • Hinge Brick 1 x 2 Base Black Part 3937 Element 393726 ×1
  • Hinge Brick 1 x 2 Top Plate Thin Black Part 3938 Element 393826 ×1
  • Turntable 4 x 4 Square Base, Locking Black Part 61485 Element 4517986 ×1
  • Hinge Brick 1 x 4 Locking with 1 Finger Vertical End and 2 Fingers Vertical End, 7 Teeth White Part 54661 ×2
  • Hinge Plate 1 x 2 Locking with 1 Finger On Top White Part 30383 Element 6265695 or 4262011 ×1
  • Hinge Plate 1 x 2 Locking with 2 Fingers on Side, 7 Teeth White Part 50340 Element 6266201 ×1

Transportation - Land 6 pieces

  • Grille Bar 1 x 4 x 1 2/3 Bull Bar, Squared Black Part 77083 Element 6359942 ×1
  • Wheel Holder 2 x 2 Thin with Clips, Plane Single Light Bluish Gray Part 2415 Element 6321198 or 4211351 ×1
  • Wheel Holder, Plate, Round 2 x 2 Thin with Clips Light Bluish Gray Part 2655 Element 6152344 or 4211373 ×4

Wheels and Tyres 5 pieces

  • Wheel Skateboard / Trolley Black Part 2496 Element 6223673 or 4569104 ×4
  • Wheel Centre Small with Stub Axles (Pulley Wheel) Dark Bluish Gray Part 3464 Element 6005463 ×1

Bricks Wedged 4 pieces

  • Brick Wedged, Curved 2 x 1 with Stud Notch Left Red Part 29120 Element 6177505 ×2
  • Brick Wedged, Curved 2 x 1 with Stud Notch Right Red Part 29119 Element 6177507 ×2

Plates Wedged 4 pieces

  • Wedge Plate 2 x 2 Cut Corner Dark Blue Part 26601 Element 6164071 ×4

Technic Bricks 4 pieces

  • Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 ×2
  • Technic Brick 1 x 8 [7 Pin Holes] Black Part 3702 Element 370226 ×2

Technic Special 4 pieces

  • Technic Plate 1 x 5 with Smooth Ends, 4 Studs and Centre Axle Hole Blue Part 32124 Element 6280384 or 4112874 ×4

Bricks Curved 3 pieces

  • Brick Curved 2 x 1 No Studs [1/2 Bow] White Part 11477 Element 6552145 or 6548276 ×3

Minifig Accessories 2 pieces

  • Sports Roller Skate Light Bluish Gray Part 11253 Element 6217791 ×2

Tubes and Hoses 1 piece

  • Flexible Hose 8.5L with Tabless Ends Black (Fixed Ends different color than Tube) Yellow Part 73590c03b Element 6327403 or 6289605 ×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

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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.

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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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