BlockTalk Find Your Set

Free tool

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.

Thwomp Drop Expansion Set

Checking

71376 Thwomp Drop Expansion Set

393 pieces in 159 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.

Show

Piece checklist

Light Bluish Gray 149 pieces

  • Bracket 1 x 2 - 2 x 2 Inverted Light Bluish Gray Part 99207 Element 4654580 ×4
  • Bracket 1 x 2 - 2 x 4 Light Bluish Gray Part 93274 Element 6118827 or 4613165 ×3
  • Brick 1 x 1 Light Bluish Gray Part 3005 Element 4211389 ×2
  • Brick 1 x 4 Light Bluish Gray Part 3010 Element 4211394 ×2
  • Brick 1 x 8 Light Bluish Gray Part 3008 Element 4211392 ×1
  • Brick 2 x 8 Light Bluish Gray Part 3007 Element 6037399 or 4211391 ×1
  • Brick Arch 1 x 4 Light Bluish Gray Part 3659 Element 4211435 ×2
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Light Bluish Gray Part 6091 Element 6285778 or 4211519 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Light Bluish Gray Part 11477 Element 6028813 ×2
  • Brick Curved 2 x 2 x 2/3 Light Bluish Gray Part 15068 Element 6102357 ×2
  • Brick Round 2 x 2, Pin Holes Light Bluish Gray Part 17485 Element 6372076 or 6078985 ×6
  • Brick Sloped 45° 2 x 1 Triple with Inside Stud Holder Light Bluish Gray Part 15571 Element 6075075 ×10
  • Brick Sloped Inverted 45° 2 x 1 Light Bluish Gray Part 3665 Element 4211437 ×4
  • Brick Special 1 x 2 with 2 Pins, Square Pin Holes Light Bluish Gray Part 53540 Element 6276874 ×1
  • Brick Special 1 x 2 with 2 Studs on 1 Side Light Bluish Gray Part 11211 Element 6015344 ×2
  • Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side Light Bluish Gray Part 22885 Element 6123809 ×2
  • Brick Special 1 x 4 with Groove Light Bluish Gray Part 2653 Element 4211613 ×7
  • Hinge Plate 2 x 4 with Pin Hole with 2 Holes - Bottom Light Bluish Gray Part 43056 Element 6258903 ×1
  • Panel 1 x 2 x 1 [Rounded Corners] Light Bluish Gray Part 4865b Element 6146223 ×2
  • Panel 1 x 3 x 1 Light Bluish Gray Part 23950 Element 6210581 ×4
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×3
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×1
  • Plate 1 x 6 Light Bluish Gray Part 3666 Element 4211438 ×12
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×3
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×2
  • Plate 4 x 6 Light Bluish Gray Part 3032 Element 4211404 ×1
  • Plate Round 1 x 1 with Solid Stud Light Bluish Gray Part 6141 Element 4211525 ×6
  • Plate Round Corners 4 x 4 x 2/3 Circle with Reduced Knobs Light Bluish Gray Part 66792 Element 6294703 ×2
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Light Bluish Gray Part 4081b Element 6281998 or 4632575 ×2
  • Plate Special 2 x 6 x 2/3 with 4 Studs on Side, 1 Support Wall on Bottom Light Bluish Gray Part 87609 Element 6102575 ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×2
  • Technic Axle Towball Light Bluish Gray Part 2736 Element 6443149 or 4211375 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Light Bluish Gray Part 3700 Element 4211440 ×9
  • Technic Brick 1 x 6 [5 Pin Holes] Light Bluish Gray Part 3894 Element 4211466 ×1
  • Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls] Light Bluish Gray Part 42195 Element 6273212 ×1
  • Technic Pin Connector Round 1L [Beam] Light Bluish Gray Part 18654 Element 6183784 ×1
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Light Bluish Gray Part 32054 Element 4211865 ×2
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 ×6
  • Tile 1 x 3 Light Bluish Gray Part 63864 Element 4558169 ×2
  • Tile 1 x 4 with Groove Light Bluish Gray Part 2431 Element 4211356 or 2431194 ×2
  • Tile 1 x 6 with Groove Light Bluish Gray Part 6636 Element 4211549 ×2
  • Tile 1 x 8 with Groove Light Bluish Gray Part 4162 Element 4211481 ×3
  • Tile 2 x 2 with Groove Light Bluish Gray Part 3068b Element 4211413 ×8
  • Tile 2 x 2 with Thwomp and Barcode Print (Sticker) Light Bluish Gray Part 3068bpr0057 Element 6320481 ×1
  • Tile 2 x 3 Light Bluish Gray Part 26603 Element 6171894 ×2
  • Tile 2 x 4 with Angry Eyes (Thwomp) Print Light Bluish Gray Part 87079pr0229 Element 6318698 ×1
  • Tile 2 x 4 with Angry Mouth with Teeth (Thwomp) Print Light Bluish Gray Part 87079pr0230 Element 6318699 ×1
  • Tile 6 x 6 with Bottom Tubes Light Bluish Gray Part 10202 Element 6014617 ×3
  • Tile Special 2 x 2 with Top Pin Light Bluish Gray Part 2460 Element 4211365 ×4
  • Tile Special Round 1 x 1 with Hollow Bar Light Bluish Gray Part 20482 Element 6258831 ×4

Dark Bluish Gray 47 pieces

  • Bracket 1 x 2 - 2 x 2 Dark Bluish Gray Part 44728 Element 6117972 or 6048854 ×2
  • Brick 1 x 2 Dark Bluish Gray Part 3004 Element 4211088 ×3
  • Brick 1 x 2 x 2 with Inside Stud Holder Dark Bluish Gray Part 3245c Element 4210978 ×6
  • Brick 1 x 2 x 5 with Hollow Studs Dark Bluish Gray Part 2454b Element 4211075 ×1
  • Brick 2 x 4 Dark Bluish Gray Part 3001 Element 4211085 ×2
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Dark Bluish Gray Part 3747b Element 4211064 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Dark Bluish Gray Part 3660 Element 4211000 ×3
  • Hinge 1 x 3 Triangle with Two Pins, 1 Locking Finger, Squared Pin Holes Dark Bluish Gray Part 57359 Element 6270795 ×1
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 Also in Black ×4
  • Plate 1 x 6 Dark Bluish Gray Part 3666 Element 4211056 ×5
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×1
  • Plate 2 x 2 Corner Dark Bluish Gray Part 2420 Element 4210635 ×2
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×1
  • Plate 2 x 8 Dark Bluish Gray Part 3034 Element 4210997 ×2
  • Plate 4 x 4 Dark Bluish Gray Part 3031 Element 4243831 or 4211089 ×1
  • Plate 4 x 8 Dark Bluish Gray Part 3035 Element 4211061 ×1
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Dark Bluish Gray Part 18674 Element 6115080 ×2
  • Technic Beam 1 x 5 Thick Dark Bluish Gray Part 32316 Element 32316199 or 4210686 ×2
  • Tile 1 x 2 with Groove Dark Bluish Gray Part 3069b Element 4211052 ×4

Red 42 pieces

  • Bracket 1 x 2 - 1 x 2 Inverted Red Part 99780 Element 6089698 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Red Part 11477 Element 6029946 ×2
  • Brick Special 1 x 2 with 2 Studs on 1 Side Red Part 11211 Element 6019155 ×1
  • Brick Special 1 x 4 with 4 Studs on One Side Red Part 30414 Element 4177991 or 4157223 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 2 x 3 Red Part 3021 Element 302121 ×2
  • Plate 2 x 6 Red Part 3795 Element 379521 ×2
  • Plate 4 x 8 Red Part 3035 Element 303521 ×2
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Red Part 2654 Element 4617080 or 4278275 ×1
  • Plate Round Corners 4 x 4 x 2/3 Circle with Reduced Knobs Red Part 66792 Element 6301842 ×2
  • Plate Round Corners 6 x 6 x 2/3 Circle with Reduced Knobs Red Part 66789 Element 6294705 ×3
  • Plate Round Corners 8 x 8 x 2/3 Circle with Reduced Knobs Red Part 66790 Element 6294706 ×1
  • Plate Special 1 x 2 with Door Rail Red Part 32028 Element 4612575 or 4239063 ×4
  • Technic Axle and Pin Connector Angled #1 Red Part 32013 Element 6332580 or 4254606 ×5
  • Technic Axle and Pin Connector Angled #2 - 180° Red Part 32034 Element 6351572 or 4234429 ×1
  • Technic Beam 3 x 5 L-Shape Thick Red Part 32526 Element 4143154 ×1
  • Tile 1 x 2 with Groove Red Part 3069b Element 4178178 or 306921 ×1
  • Tile 1 x 8 with Groove Red Part 4162 Element 416221 ×3
  • Tile 2 x 3 Red Part 26603 Element 6189130 ×1
  • Tile Round 1 x 1 Red Part 98138 Element 6284574 or 6063445 ×1
  • Tile Special 2 x 2 with Top Pin Red Part 2460 Element 246021 ×1
  • Tile Special Round 1 x 1 with Hollow Bar Red Part 20482 Element 6215539 or 6188827 ×3

Black 40 pieces

  • Brick Curved 2 x 2 x 2/3 Black Part 15068 Element 6053077 ×4
  • Brick Curved 4 x 2 No Studs Black Part 93606 Element 4647286 ×1
  • Brick Sloped 33° 3 x 1 Black Part 4286 Element 428626 ×2
  • Brick Sloped 33° 3 x 2 Black Part 3298 Element 329826 ×1
  • Hinge Plate 2 x 4 with Pin Hole with 2 Holes - Top Black Part 43045 Element 6256116 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 Also in Dark Bluish Gray ×2
  • Plate 2 x 12 Black Part 2445 Element 244526 ×4
  • Plate 2 x 16 Black Part 4282 Element 428276 or 428226 ×2
  • Plate 2 x 6 Black Part 3795 Element 379526 ×2
  • Plate Round Corners 4 x 4 x 2/3 Circle with Reduced Knobs Black Part 66792 Element 6312482 ×1
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×1
  • Technic Axle 32 Black Part 50450 Element 6210821 or 4233937 ×1
  • Technic Axle Connector Double Flexible [Rubber] Black Part 45590 Element 4198367 ×2
  • Technic Axle Connector Smooth [with x Hole + Orientation] Black Part 59443 Element 6084612 or 4512363 ×1
  • Technic Axle Connector with Axle Hole [Reinforced] Black Part 42135 Element 6331716 ×1
  • Technic Pin Connector Hub with 2 Perpendicular Axles Black Part 10197 Element 6099801 or 6098801 ×2
  • Technic Pin Connector Plate with One Hole (Single on Bottom) Black Part 32529 Element 4144023 ×2
  • Technic Pin Connector Round [Slotted] Black Part 62462 Element 6173119 or 4526982 ×2
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×2
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×4
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×2

White 21 pieces

  • Bracket 1 x 2 - 2 x 4 White Part 93274 Element 6552163 or 6158058 ×2
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×1
  • Brick 2 x 6 White Part 2456 Element 6552122 or 4249698 ×1
  • Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side White Part 22885 Element 6603759 or 6218823 ×4
  • Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 7 Teeth White Part 57360 Element 6615540 or 6271540 ×1
  • Plate 1 x 6 White Part 3666 Element 6552107 or 6548265 ×1
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×1
  • Plate Round Corners 4 x 4 x 2/3 Circle with Reduced Knobs and Double Arrows and Barcode Print (Sticker) White Part 66792pr0058 Element 6320484 ×1
  • Plate Round Half 3 x 6 with 1 x 2 Cutout White Part 18646 Element 6609538 or 6192352 ×1
  • Plate Special 3 x 5 Cloud with 3 Center Studs White Part 35470 Element 6223667 ×1
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin White Part 32064a Element 6548286 or 6178921 ×2
  • Tile Round 2 x 2 with Skull Print White Part 14769pr1171 Element 6424432 or 6318700 ×4
  • Tile Round Corners 4 x 4 x 2/3 with Double Arrows and Barcode Print (Sticker) White Part 68869pr0067 Element 6321212 ×1

Yellow 21 pieces

  • Brick Special 1 x 2 x 1 2/3 with 8 Studs on 3 Sides Yellow Part 67329 Element 6310247 ×4
  • Plate 1 x 1 Yellow Part 3024 Element 302424 ×6
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Yellow Part 4032a Element 403224 ×2
  • Technic Beam 1 x 5 Thick Yellow Part 32316 Element 4142133 or 4128590 ×1
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 ×2
  • Tile 2 x 2 with Lava Bubble and Barcode Print (Sticker) Yellow Part 3068bpr0056 Element 6320359 ×2
  • Tile 2 x 2 with Two Black Ovals (Lava Bubble Eyes) Print Yellow Part 3068bpr0433 Element 6308990 ×2
  • Tile 2 x 4 with Groove Yellow Part 87079 Element 6388490 or 4560181 ×2

Orange 18 pieces

  • Brick 1 x 4 Orange Part 3010 Element 4118827 ×2
  • Plate 1 x 2 Orange Part 3023 Element 4177932 or 4163009 Also in Trans-Orange ×4
  • Plate 1 x 6 Orange Part 3666 Element 4173332 or 4122466 ×4
  • Plate 2 x 10 Orange Part 3832 Element 6264183 or 4497178 ×1
  • Plate 2 x 6 Orange Part 3795 Element 4121741 ×3
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Orange Part 15573 Element 6092599 ×2
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Orange Part 60483 Element 6265128 or 6057526 ×2

Trans-Orange 18 pieces

  • Brick Sloped 45° 1 x 1 x 2/3 Quadruple Convex [Pyramid] Trans-Orange Part 22388 Element 6581704 or 6250584 ×6
  • Flame / Headwear Accessory Plume / Feather, Triple Point Trans-Orange Part 64647 Element 6314353 or 6100044 ×2
  • Plate 1 x 2 Trans-Orange Part 3023 Element 6514005 or 6240217 Also in Orange ×8
  • Tile Round 1 x 1 Trans-Orange Part 98138 Element 6514197 or 6274747 ×2

Tan 12 pieces

  • Brick 1 x 3 Tan Part 3622 Element 4162465 or 4113920 ×4
  • Plate 1 x 2 Tan Part 3023 Element 4113917 or 302305 ×5
  • Technic Axle 4 with Centre Stop Tan Part 99008 Element 4666999 ×1
  • Technic Pin Long without Friction Ridges, with Anti-Roll Notch Tan Part 39888 Element 6321305 ×2

Blue 8 pieces

  • Brick Sloped Inverted 45° 2 x 1 Blue Part 3665 Element 366523 ×1
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×2
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×1
  • Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 ×2
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×2

Bright Light Yellow 6 pieces

  • Technic Brick 1 x 1 with Pin Hole Bright Light Yellow Part 6541 Element 6316263 ×6

Green 6 pieces

  • Brick Sloped 45° 2 x 1 with Bottom Pin Green Part 3040b Element 4121969 or 4109668 ×1
  • Plate Round 1 x 1 with Solid Stud Green Part 6141 Element 4569058 or 4519965 ×5

Lime 2 pieces

  • Tile 1 x 2 with Groove Lime Part 3069b Element 4500125 or 4164025 ×2

Medium Blue 2 pieces

  • Brick 1 x 1 Medium Blue Part 3005 Element 4179830 or 4165452 ×2

Reddish Brown 1 piece

  • Plate 1 x 4 Reddish Brown Part 3710 Element 4211190 ×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.

We value your privacy

We use cookies 🍪 for analytics and to improve your experience. Read our privacy policy