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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.

T. rex

Checking

31151 T. rex

626 pieces in 151 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

Olive Green 168 pieces

  • Brick 1 x 2 Olive Green Part 3004 Element 6031131 or 6024722 ×7
  • Brick 1 x 4 Olive Green Part 3010 Element 6062697 or 6031133 ×3
  • Brick 1 x 6 Olive Green Part 3009 Element 6031134 or 6020143 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Olive Green Part 11477 Element 6031787 ×28
  • Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] Olive Green Part 11153 Element 6484780 or 6042961 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Olive Green Part 54200 Element 6002841 1 spare in the box ×2
  • Brick Sloped 30° 1 x 2 x 2/3 Olive Green Part 85984 Element 6016468 ×4
  • Brick Special 1 x 1 with Stud on 1 Side Olive Green Part 87087 Element 6473446 ×2
  • Brick Special 1 x 2 with 2 Studs on 1 Side Olive Green Part 11211 Element 6473447 ×2
  • Brick Wedged, Angled 4 x 2 Left Olive Green Part 41768 Element 6484786 ×3
  • Brick Wedged, Angled 4 x 2 Right Olive Green Part 41767 Element 6484787 ×3
  • Plate 1 x 1 Olive Green Part 3024 Element 6058245 or 6031105 1 spare in the box ×2
  • Plate 1 x 2 Olive Green Part 3023 Element 6016483 ×54
  • Plate 1 x 4 Olive Green Part 3710 Element 6186030 or 6031109 ×11
  • Plate 2 x 4 Olive Green Part 3020 Element 6031128 or 6020144 ×7
  • Plate Round 1 x 1 with Solid Stud Olive Green Part 6141 Element 6258990 1 spare in the box ×6
  • Wedge Plate 2 x 2 Cut Corner Olive Green Part 26601 Element 6278087 ×16
  • Wedge Plate 4 x 2 Left Olive Green Part 41770 Element 6484784 ×5
  • Wedge Plate 4 x 2 Right Olive Green Part 41769 Element 6484785 ×5
  • Wedge Plate 8 x 3, 22° Left Olive Green Part 50305 Element 6484781 ×2
  • Wedge Plate 8 x 3, 22° Right Olive Green Part 50304 Element 6484782 ×2

Dark Green 133 pieces

  • Bracket 5 x 2 x 2 1/3 with Holes, Inside Stud Holder Dark Green Part 76766 Element 6484779 ×1
  • Brick 1 x 1 Dark Green Part 3005 Element 6618073 or 4521915 ×2
  • Brick 1 x 2 Dark Green Part 3004 Element 6618072 or 4245570 ×2
  • Brick 2 x 4 Dark Green Part 3001 Element 4260493 ×3
  • Brick Arch 1 x 3 x 2 Curved Top Dark Green Part 6005 Element 6484766 or 6080443 ×2
  • Brick Curved 2 x 2 x 2/3 Dark Green Part 15068 Element 6618100 or 6101285 ×9
  • Brick Sloped 30° 1 x 2 x 2/3 Dark Green Part 85984 Element 6618117 or 6168574 ×7
  • Brick Sloped 45° 2 x 1 with Bottom Pin Dark Green Part 3040b Element 4255624 ×2
  • Brick Sloped 45° 2 x 4 x 1 1/3 Double Dark Green Part 80545 Element 6484764 ×6
  • Brick Wedged, Curved 2 x 1 with Stud Notch Left Dark Green Part 29120 Element 6618105 or 6214814 ×8
  • Brick Wedged, Curved 2 x 1 with Stud Notch Right Dark Green Part 29119 Element 6618104 or 6214813 ×8
  • Brick Wedged, Curved 4 x 4 No Top Studs Dark Green Part 47753 Element 6484783 or 6114552 ×5
  • Plate 1 x 4 Dark Green Part 3710 Element 6618083 or 6020923 ×8
  • Plate 2 x 4 Dark Green Part 3020 Element 6618075 or 4586057 ×7
  • Plate Round Half 3 x 6 with 1 x 2 Cutout Dark Green Part 18646 Element 6484765 ×8
  • Tile 1 x 1 with Groove Dark Green Part 3070b Element 6618080 or 6055171 1 spare in the box ×16
  • Tile 1 x 2 with Groove Dark Green Part 3069b Element 6618079 or 6326011 ×17
  • Tile Round 1 x 1 Quarter Dark Green Part 25269 Element 6315608 1 spare in the box ×16
  • Wedge Plate 4 x 2 Left Dark Green Part 41770 Element 4648340 ×3
  • Wedge Plate 4 x 2 Right Dark Green Part 41769 Element 6214291 or 4648342 ×3

Black 96 pieces

  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Medium Black Part 87747 Element 6270091 or 4563477 1 spare in the box ×6
  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Black Part 53451 Element 6270103 or 4568385 1 spare in the box ×6
  • Bracket 1 x 1 - 1 x 2 Inverted Black Part 73825 Element 6335317 ×4
  • Bracket 1 x 2 - 2 x 2 Black Part 44728 Element 6117973 or 6048855 ×2
  • Bracket 1 x 2 - 2 x 4 Black Part 93274 Element 6118829 or 4616245 ×6
  • Bracket 5 x 2 x 1 1/3 with Bottom Stud Holder Black Part 79180 Element 6533639 ×2
  • Brick 2 x 3 Black Part 3002 Element 300226 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Round Hollow Bottom Pin, Bar-sized Stud Holes] Black Part 76959 Element 6425507 ×1
  • Brick Special 1 x 2 with Studs on 2 Sides Black Part 52107 Element 4253815 ×2
  • Plate 2 x 2 Black Part 3022 Element 302226 Also in Dark Bluish Gray ×7
  • Plate 2 x 3 Black Part 3021 Element 302126 ×2
  • Plate Angled 3 x 3 with Heart Shape Black Part 39613 Element 6448733 ×4
  • Plate Round 1 x 1 with Open Stud Black Part 85861 Element 6168646 or 6100627 1 spare in the box ×2
  • Plate Special 1 x 1 x 2/3 Half Round with Side Stud Black Part 3386 Element 6424674 ×7
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Black Part 60470b Element 6310268 or 4556158 ×2
  • Plate Special 1 x 2 with Pin Hole Underneath Black Part 18677 Element 6192309 or 6167497 ×2
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Half Hollow Anti-stud] - Updated Version Black Part 4304 Element 6469445 ×10
  • Technic Ball Joint with Through Axle Hole Black Part 53585 Element 4286267 ×4
  • Technic Brick 1 x 1 with Pin Hole Black Part 6541 Element 654126 ×4
  • Technic Brick 1 x 10 [9 Pin Holes] Black Part 2730 Element 273026 ×2
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Black Part 32064a Element 6178922 or 4233487 ×2
  • Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 ×2
  • Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×3
  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 2 spares in the box ×11
  • Technic Rotation Joint Disk with Pin and Double Rotation Joint Ball Half Black Part 79505 Element 6365679 ×2

Dark Bluish Gray 89 pieces

  • Bar Holder with Hole and Bar Handle Dark Bluish Gray Part 23443 Element 6397633 ×4
  • Bracket 1 x 2 - 2 x 2 Inverted Dark Bluish Gray Part 99207 Element 6308045 ×4
  • Brick Curved 3 x 1 No Studs Dark Bluish Gray Part 50950 Element 4246896 ×2
  • Brick Special 1 x 1 Studs on 4 Sides Dark Bluish Gray Part 4733 Element 4210700 ×3
  • Brick Special 1 x 2 x 1 2/3 with 8 Studs on 3 Sides Dark Bluish Gray Part 67329 Element 6314192 ×3
  • Brick Special 1 x 4 with 4 Studs on One Side Dark Bluish Gray Part 30414 Element 4210725 ×2
  • Hinge Plate 1 x 2 Locking with 1 Finger On End, without Groove Dark Bluish Gray Part 44301b Element 6266225 ×1
  • Plate 1 x 5 Dark Bluish Gray Part 78329 Element 6413109 ×2
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 Also in Black ×9
  • Plate 2 x 2 Corner Dark Bluish Gray Part 2420 Element 4210635 ×4
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Bluish Gray Part 4032a Element 4211042 ×4
  • Plate Special 1 x 2 Rounded with 2 Open Studs Dark Bluish Gray Part 35480 Element 6221607 ×12
  • Plate Special 1 x 2 with 5.9mm Centre Side Towball Dark Bluish Gray Part 14417 Element 6414560 or 6338160 ×6
  • Plate Special 1 x 2 with Pin Hole on Top Dark Bluish Gray Part 11458 Element 6019987 ×2
  • Rotation Joint Socket with 2 Pins Dark Bluish Gray Part 80563 Element 6369944 ×3
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Dark Bluish Gray Part 3700 Element 4211111 ×4
  • Technic Brick 1 x 2 with Hole and Dual Beam Extensions Dark Bluish Gray Part 85943 Element 6324639 or 4547958 ×4
  • Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole, No Arm Holes Dark Bluish Gray Part 67696 Element 6338291 ×7
  • Technic Brick Special 2 x 2 with Ball and Axle Hole, with 6 Holes in Ball Dark Bluish Gray Part 57909b Element 4497253 ×3
  • Technic Pin 1/2 with Friction Dark Bluish Gray Part 89678 Element 6395635 1 spare in the box ×6
  • Wedge Plate 3 x 2 Left Dark Bluish Gray Part 43723 Element 4210872 ×1
  • Wedge Plate 3 x 2 Right Dark Bluish Gray Part 43722 Element 4210869 ×1

Tan 59 pieces

  • Brick 1 x 1 Tan Part 3005 Element 4113915 or 300505 ×1
  • Brick 1 x 2 Tan Part 3004 Element 4109995 or 300405 ×1
  • Brick 1 x 4 Tan Part 3010 Element 4113916 or 301005 ×1
  • Brick 1 x 8 Tan Part 3008 Element 4159774 or 4124002 ×2
  • Brick 2 x 4 Tan Part 3001 Element 4114319 or 300105 ×1
  • Brick 2 x 8 Tan Part 3007 Element 6037398 or 4141533 ×1
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Tan Part 11477 Element 6046922 ×4
  • Brick Curved Inverted 4 x 1 Tan Part 13547 Element 6273851 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Tan Part 54200 Element 4516055 or 4278069 1 spare in the box ×1
  • Brick Sloped 33° 3 x 1 Tan Part 4286 Element 6058090 or 4519898 ×1
  • Brick Sloped Inverted 33° 3 x 1 with Internal Stopper and No Front Stud Connection Tan Part 4287c Element 6267489 ×1
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Tan Part 3747b Element 4500453 or 4225609 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Tan Part 3660 Element 4118866 ×1
  • Plate 1 x 1 Tan Part 3024 Element 4159553 or 302405 1 spare in the box ×4
  • Plate 1 x 2 Tan Part 3023 Element 4113917 or 302305 ×9
  • Plate 2 x 2 Tan Part 3022 Element 4114084 or 302205 ×3
  • Plate 2 x 4 Tan Part 3020 Element 4114309 or 302005 ×8
  • Plate 2 x 8 Tan Part 3034 Element 4113988 or 303405 ×1
  • Plate 4 x 10 Tan Part 3030 Element 6037834 or 4609328 ×1
  • Plate Round 1 x 1 with Solid Stud Tan Part 6141 Element 4161734 or 614105 1 spare in the box ×2
  • Plate Special 3 x 2 with Rounded End, Hole Tan Part 3176 Element 6170776 or 6070377 ×1
  • Tile 1 x 1 with Groove Tan Part 3070b Element 4125253 1 spare in the box ×1
  • Tile 1 x 3 Tan Part 63864 Element 6131896 ×1
  • Tile 2 x 2 with Groove Tan Part 3068b Element 4185177 or 4114002 ×1
  • Tile Round 1 x 2 Tan Part 1126 Element 6507789 or 6397819 ×2
  • Tile Round 1 x 2 Half Circle Tan Part 1748 Element 6510069 or 6408047 1 spare in the box ×2
  • Wedge Plate 4 x 2 Left Tan Part 41770 Element 6177891 or 4545384 ×1
  • Wedge Plate 4 x 2 Right Tan Part 41769 Element 6177890 or 4616490 ×1

White 27 pieces

  • Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End Section White Part 40379 Element 6110023 or 4508454 ×2
  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Medium White Part 87747 Element 6270092 or 4613941 ×2
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×2
  • Brick Round 2 x 2 Dome Bottom [Open Stud] White Part 15395 Element 6050914 ×2
  • Brick Round 2 x 2 Dome Top, Vented Stud White Part 3262 Element 6429053 ×2
  • Brick Special 1 x 2 with Pin - Bottom Stud Holder White Part 44865 Element 6406522 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) White Part 4032a Element 6601914 or 403201 ×6
  • Plate Special 1 x 1 with Tooth White Part 49668 Element 6601935 or 4224792 ×4
  • Plate Special 1 x 2 with Three Teeth [Tri-Tooth] White Part 15208 Element 6046381 ×6

Light Bluish Gray 21 pieces

  • Bracket 1 x 2 - 2 x 2 Light Bluish Gray Part 44728 Element 6117967 or 6009014 ×2
  • Brick Special 1 x 1 with Studs on 2 Adjacent Sides Light Bluish Gray Part 26604 Element 6267495 ×2
  • Plate Special 1 x 2 5.9mm Centre Side Towball Socket Light Bluish Gray Part 14704 Element 6414561 or 6338165 ×1
  • Plate Special 1 x 2 5.9mm Towball Socket Light Bluish Gray Part 14418 Element 6414556 or 6338163 ×5
  • Technic Brick 1 x 1 with Axle Hole Light Bluish Gray Part 73230 Element 6336539 ×2
  • Technic Brick Special 1 x 2 with Pin Hole and 1 x 2 Plate Light Bluish Gray Part 73109 Element 6326478 ×6
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] Light Bluish Gray Part 65304 Element 6321747 ×2
  • Technic Rotation Joint Disk with Pin and 3L Beam Thick Light Bluish Gray Part 44225 Element 6671155 or 6332151 ×1

Red 7 pieces

  • Hinge Plate 1 x 2 Locking with 2 Fingers on Side, 7 Teeth Red Part 50340 Element 6266205 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×4
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×2

Dark Red 6 pieces

  • Brick Curved 4 x 1 Double, No Studs Dark Red Part 93273 Element 6000752 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Red Part 54200 Element 4539079 or 4531415 1 spare in the box ×1
  • Plate 1 x 2 Dark Red Part 3023 Element 4539097 or 4162582 ×2
  • Tile 1 x 6 with Groove Dark Red Part 6636 Element 4650865 or 4163776 ×2

Blue 4 pieces

  • Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot Blue Part 42924 Element 6299413 ×4

Reddish Brown 4 pieces

  • Brick Curved 2 x 1 No Studs [1/2 Bow] Reddish Brown Part 11477 Element 6069984 ×2
  • Plate 1 x 3 Reddish Brown Part 3623 Element 4211152 ×2

Sand Green 4 pieces

  • Plant, Leaves 4 x 3 Sand Green Part 2423 Element 6328339 ×4

Dark Tan 3 pieces

  • Brick Special 1 x 1 with Headlight Dark Tan Part 4070 Element 6273590 ×2
  • Plate Round 4 x 4 with Pin Hole Dark Tan Part 60474 Element 6232138 ×1

Orange 2 pieces

  • Brick and Axle Separator v2.0 Orange Part 96874 Element 6240515 or 4654448 ×1
  • Plate 1 x 3 Orange Part 3623 Element 6147047 or 4513281 ×1

Yellow 2 pieces

  • Plate 1 x 3 Yellow Part 3623 Element 362324 ×2

Trans-Bright Green 1 piece

  • Bar 4L (Lightsaber Blade / Wand) Trans-Bright Green Part 30374 Element 6507884 or 6258883 ×1

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

When a piece really is missing

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