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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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7748 Corporate Alliance Tank Droid

196 pieces in 50 part and color combinations, plus 4 minifigures.

The official piece count includes the 20 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

Black 105 pieces

  • Bar 6L with Stop Ring Black Part 63965 Element 6170421 or 6081988 ×4
  • Brick Special 1 x 2 with Studs on 2 Sides Black Part 52107 Element 4253815 ×2
  • Cone 1 x 1 [Top Groove] Black Part 59900 Element 4529236 ×6
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×4
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Black Part 2654 Element 4617551 or 4278359 ×6
  • Technic Axle 10 Black Part 3737 Element 373726 ×1
  • Technic Axle 4 Black Part 3705 Element 370526 ×2
  • Technic Axle Connector Smooth [with x Hole + Orientation] Black Part 59443 Element 6084612 or 4512363 ×2
  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×3
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black Part 42003 Element 6273708 or 4200326 ×2
  • Technic Beam 1 x 4 Thin Black Part 32449 Element 6327548 or 4142236 ×6
  • Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 ×2
  • Technic Link Tread Black Part 3873 Element 387326 1 spare in the box ×56
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×4
  • Technic Plate 2 x 8 [7 Holes] Black Part 3738 Element 373826 ×1
  • Weapon Gun / Blaster Short (Star Wars) Black Part 58247 Element 4498713 ×4

Light Bluish Gray 50 pieces

  • Arm Mechanical with 2 Clips [Battle Droid] Light Bluish Gray Part 30377 Element 6319333 or 4211658 1 spare in the box ×4
  • Brick Round 2 x 2 with Axle Hole Light Bluish Gray Part 3941 Element 4211526 ×3
  • Brick Sloped 33° 3 x 2 Light Bluish Gray Part 3298 Element 4211421 ×2
  • Brick Sloped 45° 2 x 2 Light Bluish Gray Part 3039 Element 4211410 ×2
  • Brick Special 1 x 4 Palisade [aka Log] Light Bluish Gray Part 30137 Element 4211833 ×2
  • Dish 10 x 10 Inverted (Radar) with SW Tank Droid Print Light Bluish Gray Part 50990apr0003 Element 4549191 ×2
  • Dish 4 x 4 Inverted [Radar] Light Bluish Gray Part 3960 Element 4211664 ×2
  • Lever Small Base with Black Lever Light Bluish Gray Part 298c02 Element 4221775 1 spare in the box ×2
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×3
  • Plate 2 x 10 Light Bluish Gray Part 3832 Element 4211462 ×1
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×2
  • Plate Round 4 x 4 with Pin Hole Light Bluish Gray Part 60474 Element 4515351 ×2
  • Pneumatic T-Piece (T Bar) [New Style] Light Bluish Gray Part 4697b Element 4211508 1 spare in the box ×4
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×7
  • Technic Beam 1 x 4 Thin with Stud Connector Light Bluish Gray Part 2825 Element 6331574 or 4211561 ×2
  • Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin Light Bluish Gray Part 32250 Element 4234247 ×2
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Light Bluish Gray Part 32064a Element 6206249 or 4233493 ×4
  • Technic Pin 1/2 with 2L Bar Extension Light Bluish Gray Part 61184 Element 6347715 or 4520320 ×2
  • Wheel 11 x 8 with Center Groove Light Bluish Gray Part 42610 Element 4211758 ×2

Dark Bluish Gray 32 pieces

  • Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End Dark Bluish Gray Part 47457 Element 4218696 ×2
  • Brick Sloped 18° 4 x 2 Dark Bluish Gray Part 30363 Element 4210637 ×1
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Dark Bluish Gray Part 3747b Element 4211064 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Dark Bluish Gray Part 3660 Element 4211000 ×3
  • Dish 2 x 2 Inverted [Radar] Dark Bluish Gray Part 4740 Element 4211010 ×2
  • Minifig Neckwear Bracket [One Stud] Dark Bluish Gray Part 42446 Element 4210469 ×4
  • Plate 2 x 6 Dark Bluish Gray Part 3795 Element 4211002 ×4
  • Plate 2 x 8 Dark Bluish Gray Part 3034 Element 4210997 ×1
  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Dark Bluish Gray Part 3648b Element 6133119 or 4514558 ×3
  • Tile 1 x 2 with Groove Dark Bluish Gray Part 3069b Element 4211052 ×6
  • Tile 1 x 6 with Groove Dark Bluish Gray Part 6636 Element 4210651 ×4

Red 5 pieces

  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×3
  • Technic Beam 1 x 2 Thin Red Part 41677 Element 6371442 or 4186678 ×2

Blue 2 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×2

Trans-Yellow 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 1 spare in the box ×2

Minifigures 4 figures

  • Battle Droid, One Bent Arm, One Straight Arm Minifigure, checked as a whole figure ×2
  • Clone Trooper, Phase I Armor, Brown Eyes, Jetpack Minifigure, checked as a whole figure ×2

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.

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