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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.

Extreme Team Challenge

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6584 Extreme Team Challenge

343 pieces in 131 part and color combinations, plus 4 minifigures.

LEGO counts 350 pieces. This inventory comes from a separate parts catalog and lists 364, including the 21 parts inside the minifigures; the two do not always count the same elements, so their totals differ. 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 74 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×18
  • Plate 1 x 3 Black Part 3623 Element 362326 ×4
  • Plate 2 x 12 Black Part 2445 Element 244526 ×4
  • Plate 2 x 2 Black Part 3022 Element 302226 ×3
  • Plate 2 x 6 Black Part 3795 Element 379526 ×2
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×6
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×10
  • Plate 2 x 3 Light Gray Part 3021 Element 302102 ×2
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×3
  • Plate 2 x 8 Light Gray Part 3034 Element 303402 ×2
  • Plate 2 x 6 Red Part 3795 Element 379521 ×1
  • Plate 4 x 12 Red Part 3029 Element 4514717 or 302921 ×1
  • Plate 1 x 1 Trans-Red Part 3024 Element 6513963 or 6252042 ×2
  • Plate 1 x 1 Trans-Yellow Part 3024 Element 6513966 or 6252045 ×6
  • Plate 1 x 8 White Part 3460 Element 6550141 or 346001 ×1
  • Plate 1 x 6 Yellow Part 3666 Element 366624 ×7
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×2

Plates Special 43 pieces

  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] Blue Part 4085c Element 408523 ×8
  • Bracket 1 x 2 - 1 x 4 [Square Corners] Light Gray Part 2436 Element 4282741 or 243602 ×2
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Light Gray Part 6019 Element 601952 or 601902 ×20
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Light Gray Part 2444 Element 244402 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] Red Part 2540 Element 4140585 or 254021 ×1
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 6mm] Red Part 4623 Element 462321 ×1
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] White Part 4081b Element 6281990 or 4632566 ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) White Part 3794a ×2
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 6mm] White Part 4623 Element 462301 ×1
  • Plate Special 1 x 4 with Towball White Part 3184 Element 4109712 or 318401 ×4

Bricks 34 pieces

  • Brick 1 x 4 Black Part 3010 Element 301026 ×1
  • Brick 1 x 8 Black Part 3008 Element 300826 ×2
  • Brick 2 x 4 Black Part 3001 Element 300126 ×4
  • Brick 2 x 8 Black Part 3007 Element 6037390 or 300726 ×1
  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×6
  • Brick 2 x 2 Light Gray Part 3003 Element 4103591 or 300352 ×3
  • Brick 2 x 3 Light Gray Part 3002 Element 300252 or 300202 ×4
  • Brick 1 x 4 Red Part 3010 Element 301021 ×4
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×2
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×4
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×1
  • Brick 2 x 2 Corner White Part 2357 Element 6552088 or 6548253 ×2

Bricks Sloped 28 pieces

  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×8
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed Black Part 4871 Element 4188534 or 487126 ×2
  • Brick Sloped Inverted 75° 2 x 1 x 3 Black Part 2449 Element 4636202 or 4561789 ×3
  • Brick Sloped 33° 3 x 2 Light Gray Part 3298 Element 329802 ×3
  • Brick Sloped 45° 2 x 2 Light Gray Part 3039 Element 303902 ×4
  • Brick Sloped 45° 2 x 4 Light Gray Part 3037 Element 303702 ×1
  • Brick Sloped 75° 2 x 1 x 3 with Open Stud Light Gray Part 4460a Element 446002 ×6
  • Brick Sloped 75° 2 x 2 x 3 [Hollow Studs] Light Gray Part 3684 Element 4248057 or 4143978 ×1

Tiles 24 pieces

  • Tile 1 x 2 with Groove Light Gray Part 3069b Element 306902 ×3
  • Tile 1 x 4 with Groove Light Gray Part 2431 Element 243102 ×2
  • Tile 1 x 6 with Groove Light Gray Part 6636 Element 4106326 ×4
  • Tile 2 x 2 with Groove Light Gray Part 3068b Element 306802 ×4
  • Tile 1 x 4 with Groove Red Part 2431 Element 243121 ×1
  • Tile 1 x 6 with Wood Grain Print Yellow Part 6636pr0005 Element 4113877 ×10

Wheels and Tyres 22 pieces

  • Tyre 20 x 30 Balloon Medium 49.6 x 20 Black Part 6581 Element 658126 ×4
  • Tyre 21 x 12 with Offset Tread Small Wide Black Part 6015 Element 601526 ×7
  • Wheel 11 x 12 with Hole Round for Wheels Holder Pin White Part 6014a Element 601401 ×6
  • Wheel 20 x 30 Balloon Medium White Part 6582 Element 4193785 or 658201 ×4
  • Wheel Centre Wide with Stub Axles [Tricycle] White Part 30190 Element 4113820 ×1

Hinges, Arms and Turntables 19 pieces

  • Hinge Brick 1 x 2 Base Black Part 3937 Element 393726 ×3
  • Plate Special 6 x 8 Trap Door Frame Horizontal Black Part 30041 Element 3004126 ×1
  • Turntable 2 x 2 Plate, Base Black Part 3680 Element 368076 or 368026 ×1
  • Turntable 4 x 4 Square Base with Top, Complete Assembly Black Part 3403c01 Element 4221663 or 4143677 ×1
  • Hinge Brick 1 x 2 Top Plate Thin Blue Part 3938 Element 4279389 or 393823 ×3
  • Hinge Plate 1 x 2 with 2 Fingers and Hollow Studs Light Gray Part 4276b Element 427602 ×4
  • Hinge Plate 1 x 2 with 3 Fingers [Hollow Studs] Light Gray Part 4275b Element 427502 ×4
  • Plate Special 4 x 6 x 2/3 with Trap Door Hinge Light Gray Part 30042 Element 4106975 ×1
  • Turntable 2 x 2 Plate - Top Light Gray Part 3679 Element 367952 or 367902 ×1

Transportation - Land 10 pieces

  • Wheel Arch, Mudguard 2 x 4 [Smooth] Blue Part 3787 Element 4114243 ×1
  • Exhaust Pipe Twin Inlet 11L Left Chrome Silver Part 4466 Element 70972 ×1
  • Exhaust Pipe Twin Inlet 11L Right Chrome Silver Part 4467 Element 70969 ×1
  • Steering Stand 1 x 2 with Black Steering Wheel Light Gray Part 3829c01 Element 9556 ×1
  • Handlebars Red Part 30031 Element 3003121 ×1
  • Wheel Holder, Sprung 2 x 2 Red Part 2484c01 Element 74321 ×2
  • Wheel Arch, Mudguard 2 x 4 [Smooth] White Part 3787 Element 4258362 or 378701 ×1
  • Tricycle Body Front Fork / Handlebars Yellow Part 30189 Element 4113818 ×1
  • Vehicle Body, Tricycle Body Top with Dark Gray Chassis Yellow Part 30187a Element 4113821 ×1

Technic Pins 9 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×4
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×4
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×1

String, Bands and Reels 8 pieces

  • String Cord Thin (0.5mm) [Undetermined Length] Black Part 56823 Element 7009426 ×1
  • String Reel 2 x 2 Winch Drum Black Part 2585 Element 4188195 or 4160809 ×2
  • String with End Studs and Minifig Grips 21L Green Part 14210 Element 6411972 or 6195813 ×3
  • String Reel 2 x 2 Winch Holder Light Gray Part 2584 Element 4194007 or 4160808 ×2

Bars, Ladders and Fences 7 pieces

  • Antenna 1 x 4 with Rounded Top Black Part 3957a ×3
  • Bar 1 x 4 x 2 with Studs Black Part 4083 Element 408326 ×1
  • Antenna 8H Whip Trans-Neon Green Part 2569 Element 6265159 or 6164380 ×3

Minifig Accessories 7 pieces

  • Equipment Camera Handheld with Right-Aligned Viewfinder Black Part 30089a ×1
  • Equipment Radio [Extended Handle, Compact Speaker Grille] Black Part 3962b Element 396226 ×2
  • Equipment Binoculars Dark Gray Part 30162 Element 4109923 ×1
  • Equipment Zip Line Handle Dark Gray Part 30229 Element 4113835 ×1
  • Equipment Oar / Paddle Red Part 2542 Element 4189099 or 4106939 ×1
  • Tent with Extreme Team Print Yellow Part 61880pr0003 ×1

Bricks Round and Cones 6 pieces

  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×1
  • Brick Round 2 x 2 with Axle Hole Brown Part 3941 Element 614325 ×2
  • Brick Round 1 x 1 Open Stud Light Gray Part 3062b Element 306202 ×2
  • Cone 1 x 1 [No Top Groove] Trans-Yellow Part 4589 Element 618844 ×1

Plates Round Curved and Dishes 6 pieces

  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Neon Green Part 6141 Element 6240223 or 3005749 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 ×2

Technic Bricks 6 pieces

  • Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Light Gray Part 3700 Element 370002 ×5

Tiles Special 6 pieces

  • Tile Special 1 x 1 with Clip and Straight Tips Black Part 2555 Element 255526 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Light Gray Part 2412b Element 241202 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Yellow Part 2412b Element 241224 ×3

Bricks Special 5 pieces

  • Brick Special 1 x 2 with Pin Light Gray Part 2458 Element 245802 ×1
  • Brick Special 1 x 1 with Headlight Red Part 4070 Element 407021 ×4

Minifig Headwear 4 pieces

  • Hat / Cap Long Peak [Plain] Blue Part 4485 Element 448523 ×1
  • Hat / Cap Long Peak [Plain] Green Part 4485 Element 4109733 ×1
  • Hat / Cap Long Peak [Plain] Red Part 4485 Element 448521 ×1
  • Hat / Cap Long Peak [Plain] White Part 4485 Element 4547253 or 448501 ×1

Technic Connectors 4 pieces

  • Technic Pin Connector Round [No Slot] Yellow Part 75535 Element 75644 ×4

Technic Axles 3 pieces

  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×2
  • Technic Axle 6 Black Part 3706 Element 370626 ×1

Animals / Creatures 2 pieces

  • Animal, Snake, Small Black Part 30115 Element 4107585 ×1
  • Animal, Bird, Parrot [Plain] Dark Gray Part 2546 Element 4161066 or 254627 ×1

Minifig Shields, Weapons, & Tools 2 pieces

  • Tool Grappling Hook Dark Gray Part 30192 Element 4113833 ×1
  • Tool Ice Axe [6-Rib Handle] Dark Gray Part 30193 Element 4113836 ×1

Rock 2 pieces

  • Rock Panel Rectangular 4 x 10 x 6 Dark Gray Part 6082 Element 608227 ×1
  • Rock Panel Triangular 3 x 8 x 7 Dark Gray Part 6083 Element 608327 ×1

Technic Beams 2 pieces

  • Technic Beam 1 x 4 Thin with Stud Connector Black Part 2825 Element 6331570 or 4107136 ×2

Windows and Doors 2 pieces

  • Door 1 x 3 x 1 Left Red Part 3822 Element 4288209 or 4188202 ×1
  • Door 1 x 3 x 1 Right Red Part 3821 Element 4537986 or 4288208 ×1

Baseplates 1 piece

  • Baseplate Raised 32 x 32 Canyon with Brown and Green Mountain and River Rapids Print Light Gray Part 6024pr0005 Element 4114125 ×1

Flags, Banners and Signs 1 piece

  • Flag 4 x 1 Wavy [First Wave Left] Blue Part 4495a ×1

Minifig Neckwear 1 piece

  • Minifig Neckwear Backpack Non-Opening Brown Part 2524 Element 252425 ×1

Plants & Trees 1 piece

  • Plant, Leaves 4 x 3 Green Part 2423 Element 6268814 or 242328 ×1

Technic Bushes 1 piece

  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×1

Tiles Round and Curved 1 piece

  • Tile Round 2 x 2 with Bottom Cross Black Part 4150 Element 415076 or 415026 ×1

Transportation - Sea and Air 1 piece

  • Boat / Rubber Raft / Dinghy 6 x 10 Yellow Part 30086c01 Element 6099480 or 4501130 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 3 x 4 x 1 1/3 with 2 Studs on Top Trans-Light Blue Part 2437 Element 6507914 or 6253361 ×1

Minifigures 4 figures

  • Racer, Extreme Team, Black Jacket, Black Legs, White Helmet with Flames and Visor, Blue Sunglasses Minifigure, checked as a whole figure ×1
  • Racer, Extreme Team, Black Jacket, Blue Helmet with Flames and Visor Minifigure, checked as a whole figure ×1
  • Racer, Extreme Team, Black Jacket, Black Legs, Green Helmet with Visor, Yellow Life Vest, Blue Sunglasses Minifigure, checked as a whole figure ×1
  • Racer, Extreme Team, Black Jacket, Red Helmet with Flames and Visor, Sunglasses 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.

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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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