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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.

Sidorak

Checking

8756 Sidorak

211 pieces in 70 part and color combinations.

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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Black 126 pieces

  • Large Figure Foot, with 3 Holes, Visorak Black Part 50858 Element 4242035 ×2
  • Large Figure Skeletal, Connector Block 1 x 3 x 2 with 2 Pins and Axle Hole (Rhotuka) Black Part 50901 Element 4242064 ×1
  • Large Figure Skeletal, Limb, with 2 Ball Joints (Toa Metru) Black Part 47297 Element 4290015 or 4278481 ×2
  • Large Figure Skeletal, Torso with Beam, 2 Ball Joints, and 7 Tooth Half Gear Black Part 47306 Element 4278585 or 4218521 ×1
  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Black Part 6553 Element 4107765 or 655326 ×1
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×9
  • Technic Axle 4 Black Part 3705 Element 370526 ×12
  • Technic Axle 5.5 with Stop [Flat Short End] Black Part 32209 Element 4124045 ×2
  • Technic Axle 8 Black Part 3707 Element 370726 ×2
  • Technic Axle Connector 2 x 3 with Ball Socket and Axle Socket with Light Bluish Gray Rubber Insert Black Part 47326pat0003 Element 4235786 ×6
  • Technic Axle Connector 2 x 3 with Ball Socket, Open Sides Black Part 32174 Element 4119328 ×6
  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×2
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×2
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×4
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black Part 42003 Element 6273708 or 4200326 Also in Dark Bluish Gray ×3
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Black Part 32184 Element 6276951 or 4121667 ×2
  • Technic Axle and Pin Connector Perpendicular Double Black Part 32291 Element 6280394 or 4140430 ×1
  • Technic Beam 1 x 2 Thin Black Part 41677 Element 6338428 or 4167726 ×12
  • Technic Beam 1 x 4 Thin with Stud Connector Black Part 2825 Element 6331570 or 4107136 ×4
  • Technic Beam 1 x 7 Thin Black Part 32065 Element 6271573 or 6253293 ×3
  • Technic Beam 1 x 9 Bent (6 - 4) Thick Black Part 6629 Element 6279881 or 4119800 ×4
  • Technic Beam 1 x 9 Thick Black Part 40490 Element 4645732 or 4542788 ×4
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×1
  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin / Crank Black Part 33299a Element 4156980 ×1
  • Technic Connector Block 3 x 3 Triangular with Axle, and Pin Hole Black Part 32175 Element 4287635 or 4249261 ×4
  • Technic Gear 36 Tooth Double Bevel Black Part 32498 Element 4255563 or 4177434 ×2
  • Technic Pin Double with Axle Hole Black Part 32138 Element 4130597 or 4119589 ×4
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×2
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×9
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×12
  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] Black Part 41669 Element 4540065 or 4177441 ×6

Dark Red 26 pieces

  • Large Figure Chest Cover (Toa Metru) Dark Red Part 49423 Element 4540739 or 4525188 ×1
  • Large Figure Foot, Toa Metru Dark Red Part 47298 Element 4540572 or 4528182 ×2
  • Large Figure Shoulder Cover, Armour Dark Red Part 43559 Element 4250513 ×2
  • Large Figure Skeletal, Limb, with 2 Ball Joints, and 3 Holes (Rahkshi) Dark Red Part 45749 Element 4540568 or 4294578 ×4
  • Large Figure Skeletal, Torso with 6 Holes (Matoran) Dark Red Part 47295 Element 4219214 ×1
  • Technic Beam 1 x 3 Thin Dark Red Part 6632 Element 4250521 ×4
  • Technic Beam Triangle Thin [Type I] Dark Red Part 2905 Element 4250512 ×2
  • Technic Connector Block 3 x 3 Triangular with Axle, and Pin Hole Dark Red Part 32175 Element 4250469 ×6
  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] Dark Red Part 41669 Element 6133131 or 4250515 ×4

Pearl Light Gray 25 pieces

  • Axle Hose, Soft 7L Pearl Light Gray Part 32580 Element 4287618 or 4163389 ×1
  • Hose, Ribbed 7mm D. 10L / 8.0cm Pearl Light Gray Part 78c10 Element 4495210 or 4275395 ×2
  • Hose, Ribbed 7mm D. 6L / 4.8cm Pearl Light Gray Part 78c06 Element 4495202 or 4143468 ×2
  • Large Figure Spinner / Propeller with Code Print (Rhotuka) Pearl Light Gray Part 50899pr0002 Element 4272617 or 4256099 ×1
  • Large Figure Weapon Blade, Air Katana Pearl Light Gray Part 44033 Element 4178663 ×1
  • Large Figure Weapon, Claw Hook with Axle Pearl Light Gray Part 32551 Element 4175939 ×2
  • Technic Axle Connector with Axle Hole Pearl Light Gray Part 32039 Element 4255607 or 4177427 ×4
  • Technic Axle and Pin Connector Angled #1 Pearl Light Gray Part 32013 Element 4177425 ×1
  • Technic Axle and Pin Connector Angled #4 - 135° Pearl Light Gray Part 32192 Element 4169489 ×1
  • Technic Axle and Pin Connector Perpendicular Pearl Light Gray Part 6536 Element 4177420 ×2
  • Technic Beam 1 x 13 Thick Pearl Light Gray Part 41239 Element 4227601 ×1
  • Technic Beam 1 x 3 Thick Pearl Light Gray Part 32523 Element 4201554 ×1
  • Technic Beam 1 x 3 Thin Pearl Light Gray Part 6632 Element 4287625 or 4169492 ×2
  • Technic Beam 1 x 9 Bent (7 - 3) Thick Pearl Light Gray Part 32271 Element 4200924 ×1
  • Technic Beam 1 x 9 Thick Pearl Light Gray Part 40490 Element 4255609 or 4194053 ×1
  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin / Crank Pearl Light Gray Part 33299a Element 4177438 ×1
  • Technic Connector Block 3 x 3 Triangular with Axle, and Pin Hole Pearl Light Gray Part 32175 Element 4251745 ×1

Dark Bluish Gray 15 pieces

  • Large Figure Head Connector Block (Toa Metru) Dark Bluish Gray Part 47312 Element 4278473 or 4217832 ×1
  • Rip Cord, Rhotuka, 12L with Connector Block 1 x 3 x 5 Dark Bluish Gray Part 50900 Element 4255384 or 4242039 ×1
  • Technic Axle 3 with Stud Dark Bluish Gray Part 6587 Element 6587199 or 6129590 ×6
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Dark Bluish Gray Part 42003 Element 6273715 or 4210857 Also in Black ×1
  • Technic Cam Dark Bluish Gray Part 6575 Element 6575199 or 4210759 ×4
  • Technic Pin 3/4 Dark Bluish Gray Part 32002 Element 32002199 or 4211050 1 spare in the box ×2

Light Bluish Gray 9 pieces

  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×5
  • Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×2
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×1
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 1 spare in the box ×1

Blue 7 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×7

Trans-Red 2 pieces

  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] Trans-Red Part 41669 Element 4163567 ×2

Yellow 1 piece

  • Large Figure Spinner Rod 2.5L with Gear 8 Tooth (Rhotuka) Yellow Part 50903 Element 4263698 ×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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