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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.

Arachnoid Star Base

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6977 Arachnoid Star Base

420 pieces in 133 part and color combinations, plus 4 minifigures.

The piece count includes the 18 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

Plates 104 pieces

  • Plate 1 x 10 Black Part 4477 Element 447726 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 ×14
  • Plate 1 x 6 Black Part 3666 Element 366626 ×2
  • Plate 2 x 2 Black Part 3022 Element 302226 ×11
  • Plate 2 x 2 Corner Black Part 2420 Element 242026 ×2
  • Plate 2 x 4 Black Part 3020 Element 302026 ×5
  • Plate 6 x 10 Black Part 3033 Element 303326 ×1
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×13
  • Plate 1 x 3 Blue Part 3623 Element 362323 ×3
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×3
  • Plate 1 x 6 Blue Part 3666 Element 366623 ×4
  • Plate 2 x 16 Blue Part 4282 Element 6481432 or 4595188 ×2
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×4
  • Plate 2 x 2 Corner Blue Part 2420 Element 242073 or 242023 ×4
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×3
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×2
  • Plate 4 x 10 Blue Part 3030 Element 303073 or 303023 ×2
  • Plate 6 x 16 Blue Part 3027 Element 4611373 or 4107589 ×2
  • Plate 6 x 6 Blue Part 3958 Element 4199519 or 395823 ×4
  • Plate 1 x 2 Dark Gray Part 3023 Element 4111983 or 302327 ×4
  • Plate 1 x 8 Dark Gray Part 3460 Element 346027 ×8
  • Plate 2 x 2 Dark Gray Part 3022 Element 4114003 or 302227 ×2
  • Plate 2 x 6 Dark Gray Part 3795 Element 379527 ×2
  • Plate 1 x 2 Trans-Neon Green Part 3023 Element 6240224 or 6102038 ×4

Bricks 50 pieces

  • Brick 1 x 12 Black Part 6112 Element 611226 ×1
  • Brick 1 x 3 Black Part 3622 Element 362226 ×4
  • Brick 2 x 10 Black Part 3006 Element 4617860 or 300626 ×1
  • Brick 2 x 8 Black Part 3007 Element 6037390 or 300726 ×2
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×3
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×1
  • Brick 2 x 10 Blue Part 3006 Element 4615600 or 300623 ×1
  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×4
  • Brick 1 x 1 Dark Gray Part 3005 Element 4114079 or 300527 ×2
  • Brick 1 x 2 Dark Gray Part 3004 Element 4113909 or 300427 ×9
  • Brick 1 x 4 Dark Gray Part 3010 Element 4114308 or 301027 ×8
  • Brick 1 x 8 Dark Gray Part 3008 Element 4114081 or 300827 ×4
  • Brick 2 x 2 Dark Gray Part 3003 Element 4110008 or 300327 ×4
  • Brick 2 x 6 Dark Gray Part 2456 Element 4181136 or 4114252 ×4
  • Brick 2 x 2 Corner Yellow Part 2357 Element 235774 or 235724 ×2

Hinges, Arms and Turntables 37 pieces

  • Arm Piece with Pin, 2 Fingers Black Part 6048a Element 604826 ×2
  • Hinge Bar with 3 Fingers and End Stud (Control Lever) Black Part 2433 Element 4497182 or 243326 ×2
  • Turntable 4 x 4 Square Base with Top, Complete Assembly Black Part 3403c01 Element 4221663 or 4143677 ×2
  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Blue Part 4276b Element 4238854 or 4114247 ×7
  • Hinge Plate 1 x 2 with 3 Fingers On Side Blue Part 2452 Element 4239013 or 4112883 ×1
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] Blue Part 4275b Element 4239024 or 427523 ×4
  • Hinge Plate 2 x 5 with Large Hole [Complete Assembly] Blue Part 3149bc01 Element 4106944 ×2
  • Turntable 2 x 2 Plate, Base Blue Part 3680 Element 368023 ×1
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Dark Gray Part 73983 Element 4143378 or 4111851 ×10
  • Hinge Tile 1 x 4 Dark Gray Part 4625 Element 4256576 or 4160046 ×2
  • Turntable 2 x 2 Plate - Top Light Gray Part 3679 Element 367952 or 367902 ×1
  • Wing Insectoid Small with Arm Hinge and Circuitry Print Left (Print on Top, Tip at Left, Logo at Back Edge) Trans-Dark Blue Part 30231pr0002 Element 4114648 ×1
  • Wing Insectoid Small with Arm Hinge and Circuitry Print Right (Print on Top, Tip at Right, Logo at Back Edge) Trans-Dark Blue Part 30231pr0001 Element 4114647 ×1
  • Hinge Panel 2 x 4 x 3 1/3 Trans-Green Part 2582 Element 4114172 ×1

Plates Round Curved and Dishes 35 pieces

  • Dish 6 x 6 Inverted, Radar / Webbed [Anti-studs at 90°] Black Part 4285b Element 6603362 or 4509865 ×1
  • Plate Round 1 x 1 with Solid Stud Blue Part 6141 Element 614123 ×8
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Blue Part 4032a Element 403223 ×2
  • Dish 2 x 2 Inverted [Radar] Dark Gray Part 4740 Element 474027 ×1
  • Dish 2 x 2 Inverted [Radar] Trans-Neon Green Part 4740 Element 6245297 or 4112517 ×1
  • Dish 2 x 2 with Angled Bar Trans-Neon Green Part 6919 Element 4114694 ×5
  • Plate Round 1 x 1 with Solid Stud Trans-Neon Green Part 6141 Element 6240223 or 3005749 ×17

Bricks Sloped 33 pieces

  • Brick Sloped 33° 3 x 1 Black Part 4286 Element 428626 ×2
  • Brick Sloped 53° 3 x 1 x 3 1/3 with Studs on Slope Black Part 6044 Element 604426 ×4
  • Brick Sloped Inverted 45° 2 x 1 Black Part 3665 Element 366526 ×2
  • Brick Sloped 45° 2 x 2 Blue Part 3039 Element 303923 ×2
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper Blue Part 4287a ×2
  • Brick Sloped 33° 3 x 1 Dark Gray Part 4286 Element 4108045 or 428627 ×4
  • Brick Sloped 33° 3 x 2 with Insectoid Scope Print Dark Gray Part 3298pr0035 Element 4114638 ×1
  • Brick Sloped 45° 2 x 1 with Bottom Pin Dark Gray Part 3040b Element 4121970 or 4109985 ×8
  • Brick Sloped 45° 2 x 1 with Bottom pin, with Black Crosshairs and Green Insectoid Print Dark Gray Part 3040bpr0012 Element 4121977 or 4114639 ×3
  • Brick Sloped 45° 2 x 2 Dark Gray Part 3039 Element 4109984 ×4
  • Brick Sloped 45° 2 x 2 with Blue/Copper Radar Display Print Dark Gray Part 3039pr9952 Element 4114637 ×1

Plates Special 28 pieces

  • Bracket 1 x 2 - 1 x 4 [Square Corners] Black Part 2436 Element 4282746 or 243626 ×2
  • Plate Special 1 x 4 Offset with Bar Holes Black Part 4590 Element 6002559 or 4278029 ×4
  • Plate Special 1 x 8 with Door Rail Black Part 4510 Element 4286009 or 451026 ×2
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Black Part 2444 Element 244426 ×2
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Blue Part 6019 Element 601973 or 601923 ×3
  • Plate Special 1 x 2 Side Handle [Free Ends] Blue Part 2540 Element 4140586 or 254023 ×4
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Blue Part 3794a ×2
  • Plate Special 1 x 2 with 4 x 4 disk at 90 degrees Blue Part 30209 Element 4114691 ×3
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Blue Part 3839b Element 4286615 or 383923 ×2
  • Plate Special 2 x 2 with Pin on Bottom Blue Part 2476a Element 4237078 or 4170321 ×2
  • Bracket 3 x 2 - 2 x 2 [aka Space Seat] Dark Gray Part 4598 Element 4112237 or 459827 ×2

Bricks Round and Cones 24 pieces

  • Cone 1 x 1 [No Top Groove] Black Part 4589 Element 4518219 or 458926 ×6
  • Panel 10 x 10 x 2 2/3 Quarter Saucer Base Black Part 30201 Element 4110001 ×2
  • Brick Round 2 x 2 with Axle Hole Blue Part 3941 Element 614373 or 614323 ×5
  • Dome Hemisphere 4 x 4 Multifaceted Trans-Green Part 30208 Element 4114687 ×3
  • Cone 1 x 1 [No Top Groove] Trans-Neon Green Part 4589 Element 618849 or 458949 ×8

Bricks Special 19 pieces

  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×4
  • Brick Special 1 x 2 with Grille Black Part 2877 Element 287726 ×4
  • Brick Special 1 x 4 with Groove Black Part 2653 Element 265326 ×4
  • Brick Special 1 x 2 with Pin Dark Gray Part 2458 Element 4113907 or 245827 ×3
  • Brick Special 2 x 4 with Pins Dark Gray Part 6249 Element 4143669 or 4100411 ×4

Tiles 14 pieces

  • Tile 1 x 2 with Mars Orbit Display Print Black Part 3069bpr0044 Element 4114640 ×2
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×1
  • Tile 2 x 2 with Insectoid Logo in Triangle Print Black Part 3068bpr0353 Element 4114641 ×4
  • Tile 1 x 2 with Groove Dark Gray Part 3069b Element 4109959 or 306927 ×3
  • Tile 1 x 4 with Groove Dark Gray Part 2431 Element 4109979 ×4

Supports, Girders and Cranes 13 pieces

  • Support 2 x 4 x 5 Stanchion Inclined [5mm wide posts] Dark Gray Part 4476b Element 4143360 or 4142129 ×5
  • Support Leg Large [Insectoids] Dark Gray Part 30212 Element 4114698 ×6
  • Support Leg Small [Insectoids] Trans-Green Part 30211 Element 4114697 ×2

Tiles Special 7 pieces

  • Tile Special 1 x 1 with Clip and Straight Tips Dark Gray Part 2555 Element 4112884 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Trans-Neon Green Part 2412b Element 4272661 or 4109766 ×6

Bars, Ladders and Fences 6 pieces

  • Bar, 4 Top Bars, Palm Tree Top Black Part 2566 Element 4532220 or 4159103 ×2
  • Lever Small Base with Black Lever Black Part 298c02 Element 73587 ×1
  • Antenna 8H Whip Trans-Neon Green Part 2569 Element 6265159 or 6164380 ×3

Magnets and Holders 6 pieces

  • Magnet Cylindrical Black Part 73092 Element 73092 ×3
  • Magnet Holder 2 x 3 Dark Gray Part 2607 Element 4111984 ×3

Plates Wedged 6 pieces

  • Wedge Plate 7 x 6 Boat Bow without Stud Notches Black Part 2625 ×1
  • Wedge Plate 9 x 10 Boat Bow Black Part 2621 Element 4299386 or 4112910 ×1
  • Wedge Plate 3 x 6 Cut Corners Blue Part 2419 Element 241923 ×2
  • Wedge Plate 4 x 4 Wing Left Blue Part 3936 Element 4248131 or 4112909 ×1
  • Wedge Plate 4 x 4 Wing Right Blue Part 3935 Element 4248121 or 4112818 ×1

Wheels and Tyres 6 pieces

  • Wheel Hard Plastic Medium (35mm D. x 31mm) Blue Part 2593 Element 4112231 ×4
  • Wheel Hard Plastic Small (22mm D. x 24mm) Blue Part 6118 Element 4111938 ×2

Rock 4 pieces

  • Rock 2 x 2 Crystal 3 Point Trans-Neon Green Part 30213 Element 4114434 ×4

Stickers 4 pieces

  • Sticker Sheet for Sets 2964-1, 2965-1, 5316-1, 6817-1, 6837-1, 6903-1, 6905-1, 6907-1, 6909-1, 6919-1, 6969-1, 6977-1 [No Color/Any Color] Part stickerupn0038 Element 4114700 ×4

Tiles Round and Curved 4 pieces

  • Tile Round 2 x 2 with Bottom Cross Black Part 4150 Element 415076 or 415026 ×4

Transportation - Sea and Air 4 pieces

  • Cockpit 6 x 6 x 3 1/3 Octagonal Canopy Base Black Part 30200 Element 4124388 or 4109932 ×2
  • Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders] Black Part 3475b Element 347526 ×2

Minifig Accessories 3 pieces

  • Equipment Radio [Extended Handle, Compact Speaker Grille] Black Part 3962b Element 396226 ×1
  • Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Black Part 4349 Element 434926 ×2

Panels 3 pieces

  • Panel 1 x 4 x 3 [Hollow Studs] Blue Part 4215b Element 4226902 or 4105205 ×1
  • Panel 10 x 10 x 2 1/3 Quarter Saucer Top with Insectoid Print Left Trans-Green Part 30117pr0004 Element 4112964 ×1
  • Panel 10 x 10 x 2 1/3 Quarter Saucer Top with Insectoid Print Right Trans-Green Part 30117pr0005 Element 4112965 ×1

Technic Bricks 3 pieces

  • Technic Brick 1 x 1 with Pin Hole Black Part 6541 Element 654126 ×2
  • Technic Brick 1 x 10 [9 Pin Holes] Black Part 2730 Element 273026 ×1

Windscreens and Fuselage 3 pieces

  • Windscreen 4 x 4 x 3 Canopy Trans-Green Part 2620 Element 4190481 or 4109973 ×1
  • Windscreen 6 x 6 Octagonal Canopy with Axle Hole and Insectoids Print Trans-Neon Green Part 2418bpr0002 Element 4114646 ×1
  • Windscreen 6 x 6 Octagonal Canopy with Axle hole Trans-Neon Green Part 2418b Element 4107181 ×1

Technic Pins 2 pieces

  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×2

Electronics 1 piece

  • Light and Sound Unit, Insectoid Tail 4 x 20 x 3 Dark Gray Part 71603 Element 4111802 ×1

Transportation - Land 1 piece

  • Handlebars Black Part 30031 Element 3003126 ×1

Minifigures 4 figures

  • Insectoids Droid / Gigabot Minifigure, checked as a whole figure ×2
  • Danny Longlegs / Corporal Steel with Airtanks Minifigure, checked as a whole figure ×1
  • Professor Webb / Locust with Shoulder Armor 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

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