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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.

Control Centre / Control II

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8485 Control Centre / Control II

1,067 pieces in 143 part and color combinations.

LEGO counts 1,079 pieces. This inventory comes from a separate parts catalog and lists 1,067; 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 239 pieces

  • Plate 1 x 1 Black Part 3024 Element 302426 ×2
  • Plate 1 x 10 Black Part 4477 Element 447726 ×8
  • Plate 1 x 2 Black Part 3023 Element 302326 ×38
  • Plate 1 x 3 Black Part 3623 Element 362326 ×9
  • Plate 1 x 4 Black Part 3710 Element 371026 ×27
  • Plate 1 x 6 Black Part 3666 Element 366626 ×14
  • Plate 1 x 8 Black Part 3460 Element 346026 ×5
  • Plate 2 x 12 Black Part 2445 Element 244526 ×1
  • Plate 2 x 16 Black Part 4282 Element 428276 or 428226 ×3
  • Plate 2 x 2 Black Part 3022 Element 302226 ×4
  • Plate 2 x 3 Black Part 3021 Element 302126 ×4
  • Plate 2 x 6 Black Part 3795 Element 379526 ×1
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×4
  • Plate 1 x 1 Light Gray Part 3024 Element 302402 ×2
  • Plate 1 x 10 Light Gray Part 4477 Element 447702 ×6
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×32
  • Plate 1 x 3 Light Gray Part 3623 Element 362302 ×10
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×15
  • Plate 1 x 6 Light Gray Part 3666 Element 366602 ×9
  • Plate 1 x 8 Light Gray Part 3460 Element 346002 ×2
  • Plate 2 x 10 Light Gray Part 3832 Element 383202 ×1
  • Plate 2 x 12 Light Gray Part 2445 Element 244502 ×1
  • Plate 2 x 16 Light Gray Part 4282 Element 428202 ×4
  • Plate 2 x 2 Light Gray Part 3022 Element 302202 ×3
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×2
  • Plate 1 x 2 Red Part 3023 Element 302321 ×4
  • Plate 1 x 3 Red Part 3623 Element 362321 ×4
  • Plate 2 x 10 Red Part 3832 Element 383221 ×2
  • Plate 2 x 12 Red Part 2445 Element 4255035 or 4161545 ×2
  • Plate 2 x 4 Red Part 3020 Element 302021 ×4
  • Plate 1 x 10 Yellow Part 4477 Element 6079138 or 6078095 ×2
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×1
  • Plate 1 x 3 Yellow Part 3623 Element 362324 ×2
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×4
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×4
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×3

Technic Bricks 213 pieces

  • Technic Brick 1 x 1 with Pin Hole Black Part 6541 Element 654126 ×20
  • Technic Brick 1 x 10 [9 Pin Holes] Black Part 2730 Element 273026 ×8
  • Technic Brick 1 x 12 [11 Pin Holes] Black Part 3895 Element 389526 ×21
  • Technic Brick 1 x 16 [15 Pin Holes] Black Part 3703 Element 370326 ×12
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×33
  • Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 ×15
  • Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×15
  • Technic Brick 1 x 8 [7 Pin Holes] Black Part 3702 Element 370226 ×12
  • Technic Slope Long 1 x 6 with 3 Pin Holes Black Part 2744 Element 6311889 or 274426 ×4
  • Technic Brick 1 x 1 with Pin Hole Light Gray Part 6541 Element 654102 ×4
  • Technic Brick 1 x 10 [9 Pin Holes] Light Gray Part 2730 Element 273002 ×4
  • Technic Brick 1 x 12 [11 Pin Holes] Light Gray Part 3895 Element 4195006 or 389502 ×8
  • Technic Brick 1 x 16 [15 Pin Holes] Light Gray Part 3703 Element 370302 ×6
  • Technic Brick 1 x 2 [1 Pin Hole] Light Gray Part 3700 Element 370002 ×27
  • Technic Brick 1 x 4 [3 Pin Holes] Light Gray Part 3701 Element 370102 ×10
  • Technic Brick 1 x 6 [5 Pin Holes] Light Gray Part 3894 Element 389402 ×6
  • Technic Brick 1 x 8 [7 Pin Holes] Light Gray Part 3702 Element 370202 ×6
  • Technic Slope Long 1 x 6 with 3 Pin Holes Light Gray Part 2744 Element 274402 ×2

Technic Pins 160 pieces

  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×28
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×90
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×17
  • Technic Pin 1/2 without Friction Ridges Light Gray Part 4274 Element 427402 1 spare in the box ×17
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×8

Technic Bushes 115 pieces

  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 1 spare in the box ×18
  • Technic Bush 1/2 Toothed Type II [X Opening] Light Gray Part 4265b Element 4100501 or 657702 3 spares in the box ×97

Technic Axles 66 pieces

  • Technic Axle 10 Black Part 3737 Element 373726 ×2
  • Technic Axle 12 Black Part 3708 Element 370826 ×4
  • Technic Axle 2 Black Part 3704 Element 370426 ×6
  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×11
  • Technic Axle 4 Black Part 3705 Element 370526 ×11
  • Technic Axle 6 Black Part 3706 Element 370626 ×19
  • Technic Axle 8 Black Part 3707 Element 370726 ×7
  • Technic Axle 3 with Stud Dark Gray Part 6587 Element 4113884 or 658727 ×6

Technic Special 44 pieces

  • Technic Flex Cable End - Ball Connection with Cage Black Part 6644 Element 664426 ×2
  • Technic Plate 1 x 4 with Toothed Ends Black Part 4263 Element 4251466 or 4225509 ×4
  • Technic Plate 1 x 5 with Toothed Ends, 2 Studs and Center Axle Hole Black Part 2711 Element 4279391 or 4195722 ×7
  • Technic Plate 1 x 6 with Toothed Ends Black Part 4262 Element 4225507 or 4189329 ×2
  • Technic Plate Rotor 3 Blade with Toothed Ends and 3 Studs (Propeller) Black Part 2712 Element 271226 ×2
  • Technic Flex Cable End with Pin Connection Dark Gray Part 6643 Element 664327 ×12
  • Technic Cam Light Gray Part 6575 Element 657502 ×2
  • Technic Flex Cable 11L Light Gray Part flex08c11 ×1
  • Technic Flex Cable 16L Light Gray Part flex08c16 ×1
  • Technic Flex Cable 23L Light Gray Part flex08c23 ×4
  • Technic Flex Cable 9L Light Gray Part flex08c09 ×1
  • Technic Gearbox 2 x 4 x 3 1/3 Light Gray Part 6588 Element 658802 ×2
  • Technic Plate 1 x 8 with Toothed Ends Light Gray Part 4442 Element 444252 or 444202 ×2
  • Technic Cable Holder White Part 70376 Element 70376 ×2

Technic Connectors 32 pieces

  • Technic Axle Connector Ridged [with + Hole + Orientation] Light Gray Part 6538a ×7
  • Technic Axle and Pin Connector Light Gray Part 3651 Element 4105243 or 365102 ×8
  • Technic Axle and Pin Connector Perpendicular Light Gray Part 6536 Element 4173667 or 653602 ×8
  • Technic Axle and Pin Connector Toggle Joint Toothed [with Slots] Light Gray Part 4273b Element 427302 ×9

Plates Special 30 pieces

  • Technic Plate 2 x 4 [3 Holes] Black Part 3709 Element 370926 ×7
  • Technic Plate 2 x 8 [7 Holes] Black Part 3738 Element 373826 ×6
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Light Gray Part 2444 Element 244402 ×4
  • Technic Plate 2 x 4 [3 Holes] Light Gray Part 3709 Element 370902 ×8
  • Technic Plate 2 x 8 [7 Holes] Light Gray Part 3738 Element 373802 ×4
  • Technic Plate 2 x 4 [3 Holes] Yellow Part 3709 Element 370924 ×1

Technic Gears 28 pieces

  • Technic Worm Gear Black Part 4716 Element 6037533 or 471626 ×3
  • Technic Gear 12 Tooth Bevel Light Gray Part 6589 Element 658902 ×8
  • Technic Gear 24 Tooth Crown with Reinforcements [New Style] Light Gray Part 3650c Element 365002 ×1
  • Technic Gear 24 Tooth [Old Style - Three axle holes] Light Gray Part 3648a ×4
  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 ×4
  • Technic Gear Rack 1 x 4 Light Gray Part 3743 Element 374302 ×8

Bricks Sloped 23 pieces

  • Brick Sloped 33° 3 x 1 Black Part 4286 Element 428626 ×2
  • Brick Sloped 33° 3 x 2 Black Part 3298 Element 329826 ×1
  • Brick Sloped 45° 2 x 1 Triple with Ovoid Bottom Pin Black Part 3048c Element 304826 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Black Part 3040b Element 4121966 or 304026 ×2
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Black Part 3747b Element 4500458 or 374726 ×1
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper Black Part 4287a ×2
  • Brick Sloped Inverted 45° 2 x 1 Black Part 3665 Element 366526 ×4
  • Brick Sloped 45° 2 x 1 with Bottom Pin Light Gray Part 3040b Element 4121933 or 304002 ×4
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper Light Gray Part 4287a Element 428702 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Light Gray Part 3660 Element 366002 ×1

Technic Beams 22 pieces

  • Technic Beam 1 x 4 Thin with Stud Connector Black Part 2825 Element 6331570 or 4107136 ×14
  • Technic Beam Triangle Thin [Type I] Black Part 2905 Element 4142543 or 290526 ×4
  • Technic Beam 1 x 4 Thin with Stud Connector Light Gray Part 2825 Element 4107133 or 282502 ×4

Tiles 20 pieces

  • Tile 1 x 1 with Groove Black Part 3070b Element 307026 1 spare in the box ×2
  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×4
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×4
  • Tile 1 x 2 with Groove Light Gray Part 3069b Element 306902 ×4
  • Tile 1 x 1 with Groove Yellow Part 3070b Element 307024 1 spare in the box ×3
  • Tile 1 x 2 with Groove Yellow Part 3069b Element 306924 ×3

Wheels and Tyres 20 pieces

  • Tyre 30.4 x 14 VR Black Part 6578 Element 4561806 or 657826 ×3
  • Tyre Offset Tread 24 x 8 Black Part 3483 Element 4501048 or 348326 ×2
  • Technic Wedge Belt Wheel [aka Pulley] Light Gray Part 4185 Element 4100502 or 418502 ×10
  • Wheel with Split Axle hole Light Gray Part 3482 Element 348202 ×2
  • Wheel Rim 24 x 14 VR with Center Axle Hole White Part 2994 Element 4496671 or 299401 ×3

Hinges, Arms and Turntables 15 pieces

  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Black Part 73983 Element 6102782 or 74011 ×11
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Light Gray Part 73983 Element 74066 ×2
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Yellow Part 73983 Element 6102768 or 4205196 ×2

Electronics 11 pieces

  • Electric Adapter / Transformer, 120V 60Hz, Train Speed Regulator 9V Black Part 70931 Element 4236496 or 4227582 ×1
  • Hub / Controller, Technic Control Center II Black Part 2840c02 Element 71104 ×1
  • Wire with Brick 2 x 2 x 2/3 Pair, 15L Black Part 5306bc015 Element 75565 ×2
  • Wire with Brick 2 x 2 x 2/3 Pair, 69L Black Part 5306bc069 Element 75782 ×4
  • Motor, 9V 5 x 4 x 2 1/3, Dark Gray Bottom Light Gray Part 2838c01 Element 4494210 or 74569 ×3

Plates Wedged 8 pieces

  • Wedge Plate 3 x 3 Cut Corner Black Part 2450 Element 4227684 or 245026 ×4
  • Wedge, Plate 7 x 12 Wing Left Red Part 3586 Element 4125403 or 358621 ×2
  • Wedge, Plate 7 x 12 Wing Right Red Part 3585 Element 4125402 or 358521 ×2

String, Bands and Reels 8 pieces

  • Technic Rubber Belt Medium [26mm ID] [Round Cross Section] Blue Part 85545 Element 6049730 or 4544147 2 spares in the box ×2
  • Technic Rubber Belt Medium [26mm ID] [Round Cross Section] Red Part 85545 2 spares in the box ×4
  • Rubber Belt Small [15mm ID] [Round Cross Section] White Part 85543 Element 6699001 or 4580665 2 spares in the box ×2

Tiles Special 6 pieces

  • Tile Special 1 x 1 with Clip and Straight Tips Black Part 2555 Element 255526 ×6

Technic Steering, Suspension and Engine 3 pieces

  • Technic Steering Arm Large with Towballs Black Part 2737 Element 273726 ×1
  • Technic Engine Crankshaft Light Gray Part 2853 Element 4119475 or 285302 ×2

Tubes and Hoses 2 pieces

  • Hose Rigid 3mm D. 10L / 8.0cm Dark Gray Part 75c10 Element 4173690 ×2

Gear Parts 1 piece

  • User Guide for Technic Control Centre II [8485] [No Color/Any Color] Part 4100204 ×1

Stickers 1 piece

  • Sticker Sheet for Set 8485-1 [No Color/Any Color] Part 169755 ×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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