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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.

Corporate Alliance Tank Droid

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75015 Corporate Alliance Tank Droid

255 pieces in 63 part and color combinations, plus 3 minifigures.

The official piece count includes the 16 parts inside the set's minifigures, which this inventory lists separately. 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

Technic Special 60 pieces

  • Technic Link Tread Black Part 3873 Element 387326 2 spares in the box ×60

Plates Round Curved and Dishes 26 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Blue Part 4032a Element 403223 ×8
  • Dish 10 x 10 Inverted (Radar) with Solid Studs Dark Bluish Gray Part 50990b Element 6037784 ×2
  • Dish 4 x 4 Inverted [Radar] Dark Bluish Gray Part 3960 Element 4223981 ×2
  • Dish 2 x 2 Inverted [Radar] Light Bluish Gray Part 4740 Element 4211512 ×2
  • Dish 6 x 6 Inverted (Radar) with Solid Studs Light Bluish Gray Part 44375b Element 4211796 ×2
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Light Bluish Gray Part 2654 Element 4278273 or 4276273 ×6
  • Plate Round 4 x 4 with Pin Hole Light Bluish Gray Part 60474 Element 4515351 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Orange Part 6141 Element 6514059 or 6240227 1 spare in the box ×2

Bricks Special 18 pieces

  • Brick Special 1 x 2 x 2/3 with Studs on Sides Black Part 4595 Element 6681661 or 4523339 ×2
  • Brick Special 1 x 1 with Headlight Dark Bluish Gray Part 4070 Element 4211044 ×4
  • Brick Special 1 x 2 with Grille Dark Bluish Gray Part 2877 Element 4210636 ×6
  • Brick Special 1 x 1 with Stud on 1 Side Light Bluish Gray Part 87087 Element 4558953 ×6

Technic Pins 17 pieces

  • Technic Pin Double with Axle Hole Black Part 32138 Element 4130597 or 4119589 ×2
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×3
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×2
  • Technic Pin 1/2 with 2L Bar Extension Light Bluish Gray Part 61184 Element 6347715 or 4520320 ×4
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 1 spare in the box ×6

Plates 16 pieces

  • Plate 2 x 10 Black Part 3832 Element 383226 ×1
  • Plate 2 x 6 Black Part 3795 Element 379526 ×4
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×3
  • Plate 1 x 2 Trans-Orange Part 3023 Element 6514005 or 6240217 ×8

Technic Beams 14 pieces

  • Technic Beam 1 x 3 Thick Black Part 32523 Element 4142822 or 3252326 ×2
  • Technic Beam 1 x 4 Thin Black Part 32449 Element 6327548 or 4142236 ×6
  • Technic Beam 1 x 5 Thin with Axle Holes on Ends Black Part 11478 Element 6327028 or 6030286 ×2
  • Technic Beam 1 x 4 Thin with Stud Connector Light Bluish Gray Part 2825 Element 6331574 or 4211561 ×2
  • Technic Beam 1 x 2 Thin Red Part 41677 Element 6371442 or 4186678 ×2

Technic Bricks 14 pieces

  • 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 2 [1 Pin Hole] Dark Bluish Gray Part 3700 Element 4211111 ×10
  • Technic Brick 1 x 2 [2 Pin Holes] Light Bluish Gray Part 32000 Element 4211541 ×2

Bars, Ladders and Fences 12 pieces

  • Bar 6L with Stop Ring Black Part 63965 Element 6170421 or 6081988 ×4
  • Bar 5L with Handle (Friction Ram) Light Bluish Gray Part 87618 Element 4565433 ×6
  • Lever Small Base with Black Lever Light Bluish Gray Part 298c02 Element 4221775 1 spare in the box ×2

Technic Axles 10 pieces

  • Technic Axle 12 Black Part 3708 Element 370826 ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×4
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×4

Bricks Curved 8 pieces

  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Bluish Gray Part 11477 Element 6029948 ×6
  • Brick Curved 4 x 2 No Studs Light Bluish Gray Part 93606 Element 4622742 ×2

Bricks Sloped 8 pieces

  • Brick Sloped 30° 1 x 2 x 2/3 Black Part 85984 Element 4548180 ×2
  • Brick Sloped 45° 2 x 2 Dark Bluish Gray Part 3039 Element 4211054 ×3
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Dark Bluish Gray Part 3747b Element 4211064 ×3

Technic Connectors 7 pieces

  • Technic Axle Connector Smooth [with x Hole + Orientation] Black Part 59443 Element 6084612 or 4512363 ×2
  • Technic Pin Connector Round [Slotted] Black Part 62462 Element 6173119 or 4526982 ×2
  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Dark Bluish Gray Part 6553 Element 4210665 ×2
  • Technic Axle Connector with Axle Hole Light Bluish Gray Part 32039 Element 4211553 ×1

Bricks Round and Cones 6 pieces

  • Cone 1 x 1 [Top Groove] Black Part 59900 Element 4529236 ×6

Tiles Special 6 pieces

  • Tile Special 1 x 1 with Clip with Rounded Tips Dark Bluish Gray Part 12825 Element 6030710 ×6

Plates Special 5 pieces

  • Plate Special 1 x 4 with 2 Studs, 3 Bottom Tubes Light Bluish Gray Part 92593 Element 4599498 ×4
  • Technic Plate 2 x 6 [5 Holes] Light Bluish Gray Part 32001 Element 4211542 ×1

Technic Bushes 5 pieces

  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×1
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 1 spare in the box ×4

Technic Gears 5 pieces

  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Dark Bluish Gray Part 3648b Element 6133119 or 4514558 ×3
  • Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 1 spare in the box ×2

Minifig Upper Body 4 pieces

  • Arm Mechanical with 2 Clips [Battle Droid] Black Part 30377 Element 6330086 or 4223247 1 spare in the box ×4

Pneumatics 4 pieces

  • Pneumatic T-Piece (T Bar) [New Style] Light Bluish Gray Part 4697b Element 4211508 ×4

Tiles 4 pieces

  • Tile 1 x 2 with Groove Dark Bluish Gray Part 3069b Element 4211052 ×2
  • Tile 1 x 3 Dark Bluish Gray Part 63864 Element 4568734 ×2

Bricks 2 pieces

  • Brick 2 x 4 Dark Bluish Gray Part 3001 Element 4211085 ×1
  • Brick 2 x 3 Light Bluish Gray Part 3002 Element 4211386 ×1

Minifig Accessories 2 pieces

  • Equipment Hose Nozzle / Gun with Side String Hole Simplified Light Bluish Gray Part 60849 Element 6641461 or 4515897 1 spare in the box ×2

Minifig Shields, Weapons, & Tools 2 pieces

  • Weapon Gun / Blaster Long (Star Wars) Black Part 57899 Element 4498712 ×1
  • Weapon Gun / Blaster Short (Star Wars) Black Part 58247 Element 4498713 ×1

Minifigures 3 figures

  • Clone Trooper, Phase I Armor, Angry, Plain Legs Minifigure, checked as a whole figure ×1
  • Battle Droid, Dark Orange, One Straight Arm, One Bent Arm, 1 x 2 Plate on Back Minifigure, checked as a whole figure ×1
  • Jango Fett, Dark Bluish Gray Torso Minifigure, checked as a whole figure ×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.