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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.

Millennium/Millennia

Checking

8520 Millennium/Millennia

137 pieces in 50 part and color combinations.

LEGO counts 135 pieces. This inventory comes from a separate parts catalog and lists 137; 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 85 pieces

  • Hose, Ribbed 7mm D. 10L / 8.0cm Black Part 78c10 Element 4523639 or 4287632 ×2
  • Large Figure Throwing Disk, Millennia / Jet / Judge, 8 Pips, Multi-color Sectioned Globe Print Black Part 32171pr0036 Element 4120032 ×1
  • Large Figure Visor / Limb Cover, Armour with Millennia Gold V Print Black Part 32169pr0010 Element 4141341 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×2
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×3
  • Technic Axle 4 Black Part 3705 Element 370526 ×5
  • Technic Axle 5 Black Part 32073 Element 4114740 ×6
  • Technic Axle 6 Black Part 3706 Element 370626 ×4
  • Technic Axle 8 Black Part 3707 Element 370726 ×1
  • Technic Axle Connector 2 x 3 with Ball Socket, Open Sides Black Part 32174 Element 4119328 ×4
  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 2 spares in the box ×6
  • Technic Axle and Pin Connector Angled #3 - 157.5° Black Part 32016 Element 6261386 or 4107082 ×2
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×7
  • Technic Beam 1 x 11.5 Double Bent Thick Black Part 32009 Element 6271152 or 4111998 ×2
  • Technic Beam 1 x 5 Thin Black Part 32017 Element 6114935 or 4503423 ×2
  • Technic Beam 1 x 7 with Fan Black Part 32177 Element 4586837 or 4260659 ×2
  • Technic Beam 1 x 9 Bent (6 - 4) Thick Black Part 6629 Element 6279881 or 4119800 ×2
  • Technic Beam Triangle Thin [Type I] Black Part 2905 Element 4142543 or 290526 ×2
  • Technic Disc 3 x 3 Black Part 2723 Element 4218868 or 4121619 ×2
  • Technic Panel Fairing # 1 Large Short, Large Holes, Side A Black Part 32190 Element 4121673 ×1
  • Technic Panel Fairing # 2 Large Short, Large Holes, Side B Black Part 32191 Element 4121674 ×1
  • Technic Pin Connector Block 3 x 3 x 1 Black Part 32172 Element 4119317 ×2
  • Technic Pin Double with Axle Hole Black Part 32138 Element 4130597 or 4119589 ×2
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×1
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×12
  • Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×6
  • Technic Worm Gear Black Part 4716 Element 6037533 or 471626 ×1
  • Tile Round 2 x 2 with Bottom Cross Black Part 4150 Element 415076 or 415026 ×1
  • Tyre 49.6 x 28 VR Black Part 6594 Element 75778 ×2

Light Gray 24 pieces

  • Technic Axle Connector Ridged [with x Hole x Orientation] Light Gray Part 6538b Element 4113804 or 4100408 ×2
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×2
  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×10
  • Technic Bush 1/2 Smooth with Axle Hole Reduced Light Gray Part 32123a ×6
  • Technic Gear 8 Tooth Light Gray Part 3647 Element 364702 ×2
  • Technic Pin 1/2 without Friction Ridges Light Gray Part 4274 Element 427402 ×2

Dark Gray 13 pieces

  • Large Figure Skeletal, Arm Forked with Flexible Center and Ball Joint Dark Gray Part 32168 Element 4120149 ×2
  • Large Figure Skeletal, Limb, Angular, 2 x 7 with 2 Ball Joints Dark Gray Part 32173 Element 4289780 or 4199475 ×2
  • Technic Axle 3 with Stud Dark Gray Part 6587 Element 4113884 or 658727 ×2
  • Technic Connector Block 3 x 3 Triangular with Axle, and Pin Hole Dark Gray Part 32175 Element 4141309 ×2
  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Dark Gray Part 3648b Element 4179753 or 4141308 ×1
  • Technic Gearbox Half Dark Gray Part 32166 Element 4140505 ×2
  • Wheel 49.6 x 28 VR (36.8 x 26) with Axle Hole Dark Gray Part 6595 Element 4179490 or 4141310 ×2

Red 10 pieces

  • Hose, Ribbed 7mm D. 2L / 1.6cm Red Part 78c02 Element 4268657 or 4128607 ×2
  • Technic Beam 1 x 9 Bent (6 - 4) Thick Red Part 6629 Element 6534282 or 6394730 ×6
  • Technic Panel Fairing # 1 Large Short, Large Holes, Side A Red Part 32190 Element 4235709 or 4125181 ×1
  • Technic Panel Fairing # 2 Large Short, Large Holes, Side B Red Part 32191 Element 4235710 or 4125182 ×1

Metallic Gold 2 pieces

  • Large Figure Throwing Disk, Millennia, 9 Pips, Motorcycle and Throwing Disk Print Metallic Gold Part 32171pr0061 Element 4141340 ×1
  • Technic Block 3 x 6 x 1 & 2/3 Metallic Gold Part 32165 Element 4141312 ×1

Trans-Red 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 ×2

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 8520-1 [No Color/Any Color] Part 22953 Element 4141337 ×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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