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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.

SPIKE Prime

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45678 SPIKE Prime

524 pieces in 104 part and color combinations, plus 2 minifigures.

LEGO counts 528 pieces. This inventory comes from a separate parts catalog and lists 532, including the 8 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

Technic Pins 167 pieces

  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×15
  • Technic Pin with Friction Ridges Lengthwise and Towball - Round Pin Hole Black Part 66906 Element 6344752 ×6
  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 3 spares in the box ×92
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×14
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Light Bluish Gray Part 32054 Element 4211865 ×10
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×30

Technic Beams 87 pieces

  • Technic Beam 1 x 11.5 Double Bent Thick Black Part 32009 Element 6271152 or 4111998 ×5
  • Technic Beam 1 x 15 Thick Black Part 32278 Element 4542573 or 4128603 ×6
  • Technic Beam 1 x 7 Bent (4 - 4) Thick Black Part 32348 Element 6278125 or 4128593 ×5
  • Technic Beam 1 x 9 Thick Black Part 40490 Element 4645732 or 4542788 ×5
  • Technic Beam 3 x 3 T-Shape Thick Black Part 60484 Element 4552347 or 4535771 ×5
  • Technic Connector Beam 3 x 3 Black Part 39793 Element 6265644 ×6
  • Technic Beam 1 x 11 Thick Magenta Part 32525 Element 6261634 ×5
  • Technic Beam 1 x 5 Thick Magenta Part 32316 Element 6261642 ×5
  • Technic Connector Beam 3 x 3 Magenta Part 39793 Element 6252656 ×8
  • Technic Beam 1 x 13 Thick Medium Azure Part 41239 Element 6261643 or 6133901 ×4
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Medium Azure Part 60483 Element 6344813 or 6173004 ×4
  • Technic Beam 1 x 7 Thick Medium Azure Part 32524 Element 6261638 or 6133891 ×7
  • Technic Beam 3 x 5 L-Shape Thick Medium Azure Part 32526 Element 6173003 ×5
  • Technic Beam 1 x 3 Thick Yellow Part 32523 Element 4153707 ×8
  • Technic Beam 1 x 9 Bent (7 - 3) Thick Yellow Part 32271 Element 6276838 or 4544005 ×4
  • Technic Beam 2 x 4 L-Shape Thick Yellow Part 32140 Element 6271828 or 4141628 ×5

Technic Connectors 70 pieces

  • Technic Axle Connector Double Flexible [Rubber] Black Part 45590 Element 4198367 ×6
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×5
  • Wire Clip with Axle Hole Blue Part 49283 Element 6263071 ×3
  • Wire Clip with Axle Hole Green Part 49283 Element 6263072 ×3
  • Technic Axle and Pin Connector Angled #1 Light Bluish Gray Part 32013 Element 6296859 or 4211550 ×5
  • Technic Pin Connector Hub Perpendicular 3 x 3 Bent with 4 Pins (Pin Ridges Across Part) Light Bluish Gray Part 55615 Element 4296059 ×4
  • Technic Pin Connector Hub Perpendicular 3L with 4 Pins Light Bluish Gray Part 48989 Element 4225033 ×12
  • Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes] Light Bluish Gray Part 87082 Element 4560175 ×2
  • Wire Clip with Axle Hole Magenta Part 49283 Element 6263193 ×3
  • Wire Clip with Axle Hole Medium Azure Part 49283 Element 6263192 ×2
  • Wire Clip with Axle Hole Red Part 49283 Element 6263067 ×3
  • Technic Axle Connector Smooth [with x Hole + Orientation] White Part 59443 Element 6212049 ×3
  • Technic Axle and Pin Connector Angled #4 - 135° White Part 32192 Element 6262904 or 6137758 ×5
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole White Part 32184 Element 6276981 or 6114940 ×4
  • Technic Axle and Pin Connector Angled #6 - 90° Yellow Part 32014 Element 6268925 or 6072968 ×5
  • Technic Pin Connector Round [Slotted] Yellow Part 62462 Element 6173122 or 4526983 ×2
  • Wire Clip with Axle Hole Yellow Part 49283 Element 6263069 ×3

Technic Axles 53 pieces

  • Technic Axle 4 Black Part 3705 Element 370526 ×4
  • Technic Axle 8 Black Part 3707 Element 370726 ×6
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×6
  • Technic Axle 9 Light Bluish Gray Part 60485 Element 4535768 ×6
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×12
  • Technic Axle 11 Yellow Part 23948 Element 6130012 ×3
  • Technic Axle 3 Yellow Part 4519 Element 6130007 ×10
  • Technic Axle 7 Yellow Part 44294 Element 6130009 ×6

Bricks Special 15 pieces

  • Brick Special 2 x 4 with 3 Axle Holes Blue Part 39789 Element 6244916 ×3
  • Brick Special 2 x 4 with 3 Axle Holes Green Part 39789 Element 6244915 ×3
  • Brick Special 2 x 4 with 3 Axle Holes Magenta Part 39789 Element 6252647 ×3
  • Brick Special 2 x 4 with 3 Axle Holes Red Part 39789 Element 6244918 ×3
  • Brick Special 2 x 4 with 3 Axle Holes Yellow Part 39789 Element 6244914 ×3

Technic Gears 14 pieces

  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×3
  • Technic Gear 36 Tooth Double Bevel Black Part 32498 Element 4255563 or 4177434 ×3
  • Technic Gear Rack 1 x 13 with Axle and Pin Holes Black Part 64781 Element 6302830 or 4540906 ×2
  • Technic Gear 28 Tooth Double Bevel Light Bluish Gray Part 46372 Element 6259270 ×3
  • Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] Tan Part 18575 Element 6346517 or 6084724 ×3

Wheels and Tyres 14 pieces

  • Technic Wedge Belt Wheel Tire Black Part 2815 Element 6028041 or 281526 ×2
  • Technic Wedge Belt Wheel [aka Pulley] Black Part 4185 Element 6323668 or 6192130 ×2
  • Tyre Offset Tread with Center Band 23 x 7 Black Part 61254 Element 4541455 ×3
  • Wheel 57 x 14 with 4 Black Spokes with 2 Holes and Medium Azure Integral Tire Black Part 39367pat0001 Element 6460453 or 6253244 ×4
  • Wheel 18 x 8 with Fake Bolts and Shallow Spokes and Axle Hole White Part 56903 Element 6013484 ×3

Technic Beams Special 12 pieces

  • Technic Beam Frame 5 x 7 with 3 x 5 Opening Thick Black Part 64179 Element 6016154 ×2
  • Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] Light Bluish Gray Part 14720 Element 6055519 ×4
  • Technic Beam Frame 7 x 11 Magenta Part 39794 Element 6252663 ×2
  • Technic Beam Frame 11 x 15 Medium Azure Part 39790 Element 6245375 ×2
  • Technic Base Frame 11 x 19 Yellow Part 39369 Element 6252630 ×2

Technic Bushes 10 pieces

  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 2 spares in the box ×10

Tiles Round and Curved 10 pieces

  • Tile Round 1 x 1 with White Circle Print Black Part 98138pr0076 Element 6284079 or 6182792 2 spares in the box ×4
  • Tile Round 1 x 1 with Squinted Eye, Top Side Pupil Print White Part 98138pr0062 Element 6285616 or 6173629 2 spares in the box ×4
  • Tile Round 2 x 2 with Black Spiral Print White Part 14769pr0080 Element 6215018 ×2

Electronics 9 pieces

  • Motor, Large Angular, SPIKE, White Housing, White Wire Medium Azure Part 54675 Element 6384811 or 6265698 ×1
  • Motor, Medium Servo SPIKE Medium Azure Part 54696 Element 6266099 ×2
  • Cable, USB, SPIKE / Mindstorms Robot Inventor White Part 39881 Element 6322774 or 6277572 ×1
  • Sensor, Color, SPIKE White Part 37308 Element 6217705 ×1
  • Sensor, Distance, SPIKE White Part 37316 Element 6302968 or 6217717 ×1
  • Sensor, Force, SPIKE White Part 37312 Element 6217712 ×1
  • Battery Pack, Rechargeable, SPIKE, 7.3V Yellow Part 55422 Element 6482346 or 6412889 ×1
  • Hub, Programmable, SPIKE 6-Port Yellow Part 45601 Element 6504653 or 6464165 ×1

Bricks Curved 8 pieces

  • Brick Curved 6 x 2 Black Part 44126 Element 4180548 ×4
  • Brick Curved 3 x 2 No Studs Yellow Part 24309 Element 6198024 ×4

Plates Round Curved and Dishes 8 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Medium Azure Part 4032a Element 6109752 ×6
  • Dish 6 x 6 Inverted (Radar) with Solid Studs Trans-Clear Part 44375b Element 6507944 or 6220743 ×2

Bricks Round and Cones 6 pieces

  • Brick Round 2 x 2 with Axle Hole White Part 3941 Element 6601920 or 614351 ×6

Plates Special 6 pieces

  • Technic Plate 2 x 8 [7 Holes] Black Part 3738 Element 373826 ×4
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) White Part 18674 Element 6615555 or 6093053 ×2

Bricks Sloped 4 pieces

  • Brick Sloped 30° 1 x 2 x 2/3 Yellow Part 85984 Element 4550348 ×4

Gear Parts 4 pieces

  • Storage / Sorting Tray, SPIKE Prime, Upper Tray - 4 Cups [For New Style Storage Bins] White Part 902097 ×2
  • Storage Bin Lid, Dacta [For New Style Trays] White Part 54190 ×1
  • Storage Bin, Dacta, Medium [New Style] Yellow Part 54187 ×1

String, Bands and Reels 4 pieces

  • Technic Rubber Belt Large [33mm ID] [Round Cross Section] Yellow Part 85546 Element 4544151 or 70905 ×4

Technic Panels 4 pieces

  • Technic Panel 3 x 11 x 1 Black Part 15458 Element 6080356 ×2
  • Technic Panel Curved 11 x 3 with 10 Pin Holes through Panel Surface Medium Azure Part 11954 Element 6133928 ×2

Technic Steering, Suspension and Engine 4 pieces

  • Technic Link 1 x 6 without Stoppers Black Part 32005a Element 4629921 or 4530733 ×3
  • Technic Beam 3 x 5 with Ball And Castor Joint Medium Azure Part 39370 Element 6261590 ×1

Tiles Special 4 pieces

  • Tile Special Round 2 x 2 with Hole Black Part 15535 Element 6143850 ×4

Technic Special 3 pieces

  • Ball 19mm White Part 52629 Element 6261647 ×1
  • Technic Tooth 1 x 3 with Axle Hole [Hollow Underside] White Part 48267 Element 6288218 ×2

Bricks Wedged 2 pieces

  • Brick Wedged, Curved 8 x 3 x 2 Open Left Medium Azure Part 41750 Element 6223316 ×1
  • Brick Wedged, Curved 8 x 3 x 2 Open Right Medium Azure Part 41749 Element 6223317 ×1

Plates 2 pieces

  • Plate 2 x 16 Magenta Part 4282 Element 6173062 ×2

Tubes and Hoses 2 pieces

  • Flexible Ribbed Hose 8mm Ends 19L Flat Silver Part 57539 Element 6044636 or 4615232 ×2

Stickers 1 piece

  • Sticker Sheet for Set 45678-1 [No Color/Any Color] Part 57277 Element 6268046 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 8 x 6 x 2 Curved Medium Azure Part 41751 Element 6258445 ×1

Minifigures 2 figures

  • Dark Azure Torso, Black Legs, Black Hair Minifigure, checked as a whole figure ×1
  • Bright Light Blue Torso, Bright Light Orange Legs, Dark Brown 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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