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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.

Muscle Slammer Bike

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8645 Muscle Slammer Bike

126 pieces in 51 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.

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Piece checklist

Black 52 pieces

  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×3
  • Technic Axle 4 Black Part 3705 Element 370526 ×2
  • Technic Axle 6 Black Part 3706 Element 370626 ×3
  • Technic Axle 8 Black Part 3707 Element 370726 ×1
  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×1
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×2
  • Technic Axle and Pin Connector Angled #5 - 112.5° Black Part 32015 Element 6271346 or 4107084 ×2
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×1
  • Technic Beam 1 x 11 Thick Black Part 32525 Element 6029578 or 4534909 ×2
  • Technic Beam 1 x 15 Thick Black Part 32278 Element 4542573 or 4128603 ×2
  • Technic Beam 1 x 3 Thick Black Part 32523 Element 4142822 or 3252326 ×2
  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×4
  • Technic Beam 1 x 4 Thin Black Part 32449 Element 6327548 or 4142236 ×2
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 ×2
  • Technic Beam 1 x 7 Thin Black Part 32065 Element 6271573 or 6253293 ×2
  • Technic Beam 1 x 9 Bent (7 - 3) Thick Black Part 32271 Element 6276835 or 4140327 ×2
  • Technic Beam 1 x 9 Thick Black Part 40490 Element 4645732 or 4542788 ×1
  • Technic Beam Triangle Thin [Type I] Black Part 2905 Element 4142543 or 290526 ×2
  • Technic Pin Double with Axle Hole Black Part 32138 Element 4130597 or 4119589 ×1
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×8
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×4
  • Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×2
  • Tyre 43.2 x 22 ZR Black Part 44309 Element 4184286 ×1

Light Bluish Gray 38 pieces

  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×5
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×5
  • Technic Beam 1 x 3 Thin Light Bluish Gray Part 6632 Element 6360043 or 4211566 ×2
  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 2 spares in the box ×11
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×6
  • Technic Pin Long without Friction Ridges - Single Slot Light Bluish Gray Part 32556a Element 4211709 ×7
  • Wheel 30.4 x 20 with 3 Pinholes Light Bluish Gray Part 44292 Element 4211809 ×1
  • Wheel 36.8 x 14 ZR with Axle Hole, 3 Pin Holes, and Black Rubber Tyre Glued On Light Bluish Gray Part 44293c01 Element 4275422 ×1

Red 20 pieces

  • Large Figure Chest Cover (Toa Metru) Red Part 49423 Element 4253829 ×1
  • Large Figure Weapon Sword, Toa Flame 2 x 12 with Two Holes Red Part 32558 Element 4520004 or 4260041 ×2
  • Technic Beam 1 x 2 Thin Red Part 41677 Element 6371442 or 4186678 ×2
  • Technic Beam 1 x 3 Thick Red Part 32523 Element 4153718 ×1
  • Technic Beam 1 x 5 Thin Red Part 32017 Element 4503419 or 4163978 ×4
  • Technic Beam 1 x 7 Thick Red Part 32524 Element 4495933 or 4162098 ×1
  • Technic Beam 1 x 9 Bent (6 - 4) Thick Red Part 6629 Element 6534282 or 6394730 ×1
  • Technic Beam 1 x 9 Thick Red Part 40490 Element 4645733 or 4192225 ×1
  • Technic Beam 3 x 5 L-Shape Thick Red Part 32526 Element 4143154 ×1
  • Technic Beam Triangle Thin [Type I] Red Part 2905 Element 4142540 or 290521 ×2
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×2
  • Technic Rubber Belt Medium [24mm ID] [Round Cross Section] Red Part 85544 Element 4544145 or 4544143 ×2

Pearl Light Gray 6 pieces

  • Large Figure Foot, Toa Metru Pearl Light Gray Part 47298 Element 4227050 ×2
  • Technic Beam Triangle Thin [Type I] Pearl Light Gray Part 2905 Element 4227598 ×2
  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] Pearl Light Gray Part 41669 Element 4284480 or 4177440 ×2

Glow In Dark Trans 4 pieces

  • Technic Disc 3 x 3 Glow In Dark Trans Part 2723 Element 4263240 or 4260440 ×2
  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] Glow In Dark Trans Part 41669 Element 4528345 or 4260439 ×2

Blue 3 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×3

Pearl Dark Gray 2 pieces

  • Technic Beam 2 x 4 L-Shape Thick Pearl Dark Gray Part 32140 Element 4177982 ×2

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 8645-1 [No Color/Any Color] Part 52167 Element 4254496 ×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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