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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.

Renewable Energy Set II

Checking

9684 Renewable Energy Set II

717 pieces in 99 part and color combinations, plus 4 minifigures.

LEGO counts 729 pieces. This inventory comes from a separate parts catalog and lists 733, including the 16 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

Black 277 pieces

  • Brick Special 1 x 4 with Groove Black Part 2653 Element 265326 ×4
  • Brick Special 2 x 6 x 2 Weight with Sealed Bottom and Dimples on Ends Black Part 73090b Element 6094053 or 73843 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×20
  • Plate 1 x 4 Black Part 3710 Element 371026 ×16
  • Plate 1 x 6 Black Part 3666 Element 366626 ×6
  • Plate 2 x 10 Black Part 3832 Element 383226 ×2
  • Plate 2 x 2 Black Part 3022 Element 302226 ×4
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×2
  • Plate Special 3 x 2 with Rounded End, Hole Black Part 3176 Element 317676 or 317626 ×1
  • String Cord Medium Thickness 50cm Black Part 7916c50 ×1
  • Technic Axle 10 Black Part 3737 Element 373726 ×6
  • Technic Axle 12 Black Part 3708 Element 370826 ×6
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×12
  • Technic Axle 4 Black Part 3705 Element 370526 ×6
  • Technic Axle 6 Black Part 3706 Element 370626 ×6
  • Technic Axle 8 Black Part 3707 Element 370726 ×7
  • Technic Link Black Part 3711a Element 371126 ×72
  • Technic Pin Double with Axle Hole Black Part 32138 Element 4130597 or 4119589 ×4
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×10
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×44
  • Technic Plate 2 x 4 [3 Holes] Black Part 3709 Element 370926 ×10
  • Technic Plate 2 x 6 [5 Holes] Black Part 32001 Element 3200126 ×6
  • Technic Plate 2 x 8 [7 Holes] Black Part 3738 Element 373826 ×4
  • Technic Wedge Belt Wheel Tire Black Part 2815 Element 6028041 or 281526 ×2
  • Technic Worm Gear Black Part 4716 Element 6037533 or 471626 ×1
  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×5
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×4
  • Tyre 30 x 10.5 Offset Tread Black Part 2346 Element 234676 or 234626 ×4
  • Tyre 43 x 17 Black Part 3634 Element 4523564 or 363426 ×2
  • Tyre 81.6 x 15 Motorcycle Black Part 2902 Element 6226880 or 4562873 ×3
  • Tyre Offset Tread 24 x 8 Black Part 3483 Element 4501048 or 348326 ×2
  • Wire with Brick 2 x 2 x 2/3 Pair, 162L Black Part 5306bc162 Element 75656 ×1
  • Wire with Brick 2 x 2 x 2/3 Pair, 20L Black Part 5306bc020 Element 4100355 ×2
  • Wire with Brick 2 x 2 x 2/3 Pair, 36L Black Part 5306bc036 Element 75652 ×1

Light Bluish Gray 214 pieces

  • Motor, 9V Mini [Lightweight New Style] Light Bluish Gray Part 43362c01 Element 4274900 ×2
  • Plate Special 1 x 2 with Door Rail Light Bluish Gray Part 32028 Element 4211568 ×4
  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Light Bluish Gray Part 6553 Element 4211536 ×6
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×6
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×6
  • Technic Axle Connector Ridged [with x Hole x Orientation] Light Bluish Gray Part 6538b Element 4211543 ×6
  • Technic Axle Connector with Axle Hole Light Bluish Gray Part 32039 Element 4211553 ×6
  • Technic Axle and Pin Connector Angled #2 - 180° Light Bluish Gray Part 32034 Element 6346487 or 4211567 ×4
  • Technic Axle and Pin Connector Angled #5 - 112.5° Light Bluish Gray Part 32015 Element 6271347 or 4211551 ×4
  • Technic Axle and Pin Connector Perpendicular Light Bluish Gray Part 6536 Element 6261375 or 4211775 ×6
  • Technic Beam 1 x 3 Thin Light Bluish Gray Part 6632 Element 6360043 or 4211566 ×6
  • Technic Beam 1 x 4 Thin with Stud Connector Light Bluish Gray Part 2825 Element 6331574 or 4211561 ×2
  • Technic Beam 1 x 5 Thin Light Bluish Gray Part 32017 Element 4503416 or 4211554 ×5
  • Technic Beam Triangle Thin [Type I] Light Bluish Gray Part 2905 Element 4211653 ×4
  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 ×60
  • Technic Bush 1/2 Smooth with Axle Hole Reduced Light Bluish Gray Part 32123a ×24
  • Technic Gear 24 Tooth Crown with Reinforcements [New Style] Light Bluish Gray Part 3650c Element 4211434 ×1
  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Light Bluish Gray Part 3648b Element 4211565 ×6
  • Technic Gear 40 Tooth Light Bluish Gray Part 3649 Element 6195314 or 4285634 ×3
  • Technic Gear 8 Tooth Light Bluish Gray Part 3647 Element 4211432 or 3647194 ×2
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 ×12
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 ×36
  • Technic Steering Pulley Large Light Bluish Gray Part 3736 Element 4597262 or 4542736 ×1
  • Technic Wedge Belt Wheel [aka Pulley] Light Bluish Gray Part 4185 Element 6321743 or 4494222 ×2

Red 65 pieces

  • Brick 2 x 4 Red Part 3001 Element 300121 ×4
  • Technic Brick 1 x 12 [11 Pin Holes] Red Part 3895 Element 389521 ×4
  • Technic Brick 1 x 16 [15 Pin Holes] Red Part 3703 Element 370321 ×14
  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×16
  • Technic Brick 1 x 4 [3 Pin Holes] Red Part 3701 Element 370121 ×4
  • Technic Brick 1 x 6 [5 Pin Holes] Red Part 3894 Element 389421 ×4
  • Technic Brick 1 x 8 [7 Pin Holes] Red Part 3702 Element 370221 ×14
  • Tile 1 x 2 with Groove Red Part 3069b Element 4178178 or 306921 ×5

Dark Bluish Gray 50 pieces

  • Brick Round 4 x 4 with 4 Side Pin Holes and Center Axle Hole Dark Bluish Gray Part 6222 Element 4211097 ×2
  • Brick Special 1 x 2 with Pin Dark Bluish Gray Part 2458 Element 4211087 ×8
  • Brick Special 2 x 2 with 2 Pins and Axle Hole Dark Bluish Gray Part 30000 Element 6405646 or 4211024 ×2
  • Hook with Towball Dark Bluish Gray Part 30395 Element 30395199 or 6347464 ×1
  • Technic Axle 3 with Stud Dark Bluish Gray Part 6587 Element 6587199 or 6129590 ×6
  • Technic Cam Dark Bluish Gray Part 6575 Element 6575199 or 4210759 ×2
  • Technic Engine Crankshaft Center Dark Bluish Gray Part 2854 Element 6007058 or 4210987 ×2
  • Technic Pin 3/4 Dark Bluish Gray Part 32002 Element 32002199 or 4211050 ×26
  • Technic Reel 3 x 2 Dark Bluish Gray Part 32012 Element 32012199 or 4239891 ×1

Yellow 40 pieces

  • Technic Brick 1 x 12 [11 Pin Holes] Yellow Part 3895 Element 6262393 or 389524 ×4
  • Technic Brick 1 x 16 [15 Pin Holes] Yellow Part 3703 Element 370324 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Yellow Part 3700 Element 370024 ×4
  • Technic Brick 1 x 4 [3 Pin Holes] Yellow Part 3701 Element 370124 ×4
  • Technic Brick 1 x 6 [5 Pin Holes] Yellow Part 3894 Element 389424 ×2
  • Technic Brick 1 x 8 [7 Pin Holes] Yellow Part 3702 Element 370224 ×2
  • Technic Rubber Belt Large [33mm ID] [Round Cross Section] Yellow Part 85546 Element 4544151 or 70905 ×8
  • Tipper Bed 4 x 6, Open Studs Yellow Part 4080 Element 408024 ×4
  • Wheel with Split Axle hole Yellow Part 3482 Element 348224 ×10

Tan 32 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×32

Blue 15 pieces

  • Technic Axle and Pin Connector Angled #1 Blue Part 32013 Element 6332570 or 4107797 ×6
  • Technic Axle and Pin Connector Angled #3 - 157.5° Blue Part 32016 Element 6261397 or 6177396 ×4
  • Technic Axle and Pin Connector Angled #6 - 90° Blue Part 32014 Element 4112205 ×5

White 12 pieces

  • Light Brick 1 x 2 with Single Side Light White Part 6035 Element 4603220 or 74880 ×1
  • Sail, Triangular, 15 x 22 with Blue Thin Stripes Print White Part 71308pr0001 Element 4125488 or 4100347 ×4
  • Seat / Chair 2 x 2 with Center Sprue Mark White Part 4079b Element 407901 ×4
  • Wheel 61.6 x 13.6 Motorcycle White Part 2903 Element 290301 ×3

Green 11 pieces

  • Baseplate 16 x 32 Green Part 3857 Element 4219615 or 274828 ×1
  • Brick 2 x 4 Green Part 3001 Element 4106356 or 300128 ×2
  • Plate 1 x 4 Green Part 3710 Element 371028 ×2
  • Solar Cell / Panel Green Part 22578c01 Element 4125481 ×1
  • Technic Capacitor with Clear Top Green Part 32342c01 Element 4140322 ×1
  • Tile 1 x 4 with Groove Green Part 2431 Element 243128 ×4

Trans-Clear 1 piece

  • Technic Gearbox 2 x 4 x 3 1/3 Trans-Clear Part 6588 Element 6507887 or 6254290 ×1

Minifigures 4 figures

  • Blue Jacket, White Legs, Black Hair Minifigure, checked as a whole figure ×1
  • Woman - Red Torso, Black Legs Minifigure, checked as a whole figure ×1
  • White Torso Octan, Blue Legs, Blue Cap Minifigure, checked as a whole figure ×1
  • White Torso, Red Legs, Black Hair, Freckles 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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