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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.

eLAB Renewable Energy Set

Checking

9681 eLAB Renewable Energy Set

709 pieces in 94 part and color combinations, plus 1 minifigure.

LEGO counts 721 pieces. This inventory comes from a separate parts catalog and lists 713, including the 4 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 292 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
  • Rubber Band Medium (Square Cross Section) Thin Cut Black Part 70012 Element 70012 ×5
  • String Cord Medium Thickness 100cm Black Part 14728c100 Element 6003316 or 4500573 ×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 3 Black Part 4519 Element 6238084 or 451926 ×6
  • Technic Axle 4 Black Part 3705 Element 370526 ×6
  • Technic Axle 5 Black Part 32073 Element 4114740 ×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
  • 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 ×4
  • Tyre Offset Tread 24 x 8 Black Part 3483 Element 4501048 or 348326 ×2
  • Wire with Brick 2 x 2 x 2/3 Pair, 20L Black Part 5306bc020 Element 4100355 ×1
  • Wire with Brick 2 x 2 x 2/3 Pair, 36L Black Part 5306bc036 Element 75652 ×1

Light Gray 239 pieces

  • Baseplate 16 x 32 Light Gray Part 3857 Element 4219612 or 274802 ×1
  • Hook, Plate 1 x 2 with Crane Hook Left Light Gray Part 3127 Element 312702 ×1
  • Motor, 9V Mini [Old Style] Light Gray Part 71427c01 Element 4107786 ×1
  • Plate Special 1 x 2 with Door Rail Light Gray Part 32028 Element 4109642 ×4
  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Light Gray Part 6553 Element 655302 ×6
  • Technic Axle Connector Ridged [with x Hole x Orientation] Light Gray Part 6538b Element 4113804 or 4100408 ×6
  • Technic Axle Connector with Axle Hole Light Gray Part 32039 Element 4106469 ×6
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×32
  • Technic Axle and Pin Connector Angled #2 - 180° Light Gray Part 32034 Element 4107830 ×4
  • Technic Axle and Pin Connector Angled #5 - 112.5° Light Gray Part 32015 Element 4106378 ×4
  • Technic Axle and Pin Connector Perpendicular Light Gray Part 6536 Element 4173667 or 653602 ×6
  • Technic Beam 1 x 3 Thin Light Gray Part 6632 Element 4107825 ×6
  • Technic Beam 1 x 4 Thin with Stud Connector Light Gray Part 2825 Element 4107133 or 282502 ×2
  • Technic Beam 1 x 5 Thin Light Gray Part 32017 Element 4106885 ×5
  • Technic Beam Triangle Thin [Type I] Light Gray Part 2905 Element 4142539 or 290502 ×4
  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×60
  • Technic Bush 1/2 Smooth with Axle Hole Reduced Light Gray Part 32123a ×24
  • Technic Cam Light Gray Part 6575 Element 657502 ×2
  • Technic Engine Crankshaft Center Light Gray Part 2854 Element 285402 ×2
  • Technic Gear 24 Tooth Crown with Reinforcements [New Style] Light Gray Part 3650c Element 365002 ×1
  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Light Gray Part 3648b Element 4107543 or 364802 ×6
  • Technic Gear 40 Tooth Light Gray Part 3649 Element 364902 ×3
  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 ×2
  • Technic Pin 1/2 without Friction Ridges Light Gray Part 4274 Element 427402 ×12
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×36
  • Technic Steering Pulley Large Light Gray Part 3736 Element 373602 ×1
  • Technic Wedge Belt Wheel [aka Pulley] Light Gray Part 4185 Element 4100502 or 418502 ×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 Gray 44 pieces

  • Brick Round 4 x 4 with 4 Side Pin Holes and Center Axle Hole Dark Gray Part 6222 Element 4114075 ×2
  • Brick Special 1 x 2 with Pin Dark Gray Part 2458 Element 4113907 or 245827 ×8
  • Brick Special 2 x 2 with 2 Pins and Axle Hole Dark Gray Part 30000 Element 3000027 ×2
  • Technic Axle 3 with Stud Dark Gray Part 6587 Element 4113884 or 658727 ×6
  • Technic Pin 3/4 Dark Gray Part 32002 Element 4109854 ×26

Yellow 32 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
  • Tipper Bed 4 x 6, Open Studs Yellow Part 4080 Element 408024 ×4
  • Wheel with Split Axle hole Yellow Part 3482 Element 348224 ×10

Blue 16 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
  • Technic Reel 3 x 2 Blue Part 32012 Element 4107179 ×1

White 12 pieces

  • Sail, Triangular, 15 x 22 with Blue Thin Stripes Print White Part 71308pr0001 Element 4125488 or 4100347 ×4
  • Seat / Chair 2 x 2 White Part 4079 ×4
  • Wheel 61.6 x 13.6 Motorcycle White Part 2903 Element 290301 ×4

Green 9 pieces

  • 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
  • Tile 1 x 4 with Groove Green Part 2431 Element 243128 ×4

Minifigures 1 figure

  • Blue Jacket, White Legs, Black Hair 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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