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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.

Construct-a-Zurg

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7591 Construct-a-Zurg

115 pieces in 56 part and color combinations, plus 1 minifigure.

The official piece count includes the 3 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

Dark Purple 33 pieces

  • Brick Curved 3 x 1 No Studs Dark Purple Part 50950 Element 6103449 or 4578772 ×4
  • Brick Sloped 45° 2 x 1 with Bottom Pin Dark Purple Part 3040b Element 6109814 or 4225265 ×2
  • Brick Sloped 45° 2 x 2 Double Convex Dark Purple Part 3045 Element 6107202 or 4224871 ×2
  • Cone 4 x 4 x 2, Axle Hole with Yellow Teeth Print Dark Purple Part 3943bpr0001 Element 4565968 ×1
  • Cylinder Half 3 x 6 x 6 with 1 x 2 Cutout Dark Purple Part 87926 Element 4566270 ×4
  • Dish 6 x 6 Inverted (Radar) with Hollow Studs Dark Purple Part 44375a Element 4566525 ×1
  • Dish 8 x 8 Inverted [Radar], Solid Studs, Rounded Anti-stud Underside Dark Purple Part 3961 Element 4569082 ×1
  • Large Figure Helmet with Silver Horns Print (Zurg) Dark Purple Part 88059pr0001 Element 4589910 ×1
  • Plate 2 x 3 Dark Purple Part 3021 Element 4225142 ×9
  • Plate Round 1 x 1 with Solid Stud Dark Purple Part 6141 Element 4566522 1 spare in the box ×2
  • Technic Brick Special 2 x 2 with Ball Socket Reinforced and Axle Hole Dark Purple Part 62712 Element 4566613 ×2
  • Wedge Plate 4 x 2 Left Dark Purple Part 41770 Element 6211334 or 4225170 ×2
  • Wedge Plate 4 x 2 Right Dark Purple Part 41769 Element 6211336 or 4225145 ×2

Dark Bluish Gray 30 pieces

  • Bracket 1 x 2 - 2 x 2 Dark Bluish Gray Part 44728 Element 6117972 or 6048854 ×2
  • Brick 1 x 1 Dark Bluish Gray Part 3005 Element 4211098 ×2
  • Brick 1 x 3 Dark Bluish Gray Part 3622 Element 4211104 ×2
  • Brick Curved 3 x 1 No Studs Dark Bluish Gray Part 50950 Element 4246896 ×4
  • Brick Special 1 x 2 with Grille Dark Bluish Gray Part 2877 Element 4210636 ×2
  • Brick Wedged, Curved 2 x 3 x 2/3 Two Studs, Wing End Dark Bluish Gray Part 47456 Element 6478108 or 6063277 ×4
  • Large Figure Hand, Fist with Axle Hole, 3 Fingers Dark Bluish Gray Part 64251 Element 4541458 ×2
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×2
  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Dark Bluish Gray Part 6553 Element 4210665 ×1
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×1
  • Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×2
  • Technic Brick Special 2 x 2 with Solid Ball and Axle Hole Dark Bluish Gray Part 57909a ×4
  • Tile 2 x 2 with Groove Dark Bluish Gray Part 3068b Element 4211055 ×2

Black 19 pieces

  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×3
  • Brick Sloped 30° 1 x 2 x 2/3 Black Part 85984 Element 4548180 ×2
  • Plate 1 x 10 Black Part 4477 Element 447726 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×3
  • Plate Round 4 x 4 with Pin Hole Black Part 60474 Element 4515350 ×3
  • Technic Axle and Pin Connector Angled #4 - 135° Black Part 32192 Element 6262897 or 4121610 ×1
  • Technic Disc 3 x 3 with Numbers 1 to 11 Print Black Part 2723pr0001 Element 4578066 ×1
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×1
  • Technic Wedge Belt Wheel Tire Black Part 2815 Element 6028041 or 281526 ×4

Red 13 pieces

  • Brick 2 x 4 Red Part 3001 Element 300121 ×1
  • Brick Round 2 x 2 with Axle Hole Red Part 3941 Element 614321 or 394121 ×1
  • Brick Sloped 45° 2 x 1 Double / Inverted with Bottom Stud Holder Red Part 3049d Element 6602160 or 6426620 ×2
  • Hinge Brick 1 x 2 Base Red Part 3937 Element 393721 ×2
  • Hinge Brick 2 x 2 Top Plate Thin Red Part 6134 Element 613421 ×2
  • Large Figure Cape, Pointed Collar with Black Back (Zurg) Red Part 87785 Element 4562067 ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×2
  • Technic Brick 1 x 8 [7 Pin Holes] Red Part 3702 Element 370221 ×1
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×1

Light Bluish Gray 6 pieces

  • Plate Special 2 x 2 with 2 Pin Holes Light Bluish Gray Part 2817 Element 4211376 ×1
  • Technic Wedge Belt Wheel [aka Pulley] Light Bluish Gray Part 4185 Element 6321743 or 4494222 ×4
  • Tile Round 2 x 2 with Yellow 'Z' (Zurg Logo) Print Light Bluish Gray Part 4150pr0004 Element 4566260 ×1

White 4 pieces

  • Support 2 x 2 x 11 Solid Pillar White Part 75347 Element 4100331 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] White Part 3700 Element 6619284 or 370001 ×3

Yellow 4 pieces

  • Projectile, Large Figure Weapon, Zamor Sphere / Ball Yellow Part 54821 Element 4545434 1 spare in the box ×3
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 1 spare in the box ×1

Trans-Red 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×2

Blue 1 piece

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×1

Dark Tan 1 piece

  • Technic Axle 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×1

Flat Silver 1 piece

  • Hose, Ribbed 7mm D. 18L / 14.4cm Flat Silver Part 78c18 Element 6491958 or 4620068 ×1

Pearl Light Gray 1 piece

  • Launcher, Large Figure Weapon Cannon, Midak Skyblaster with Black Housing [Complete Assembly] Pearl Light Gray Part 62233 Element 4521177 ×1

Minifigures 1 figure

  • Alien 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.

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