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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.

Jet / Judge Slizer

Checking

8504 Jet / Judge Slizer

44 pieces in 25 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 20 pieces

  • Large Figure Throwing Disk, Jet / Judge, 2 Pips, Radiating Arrows Logo Print Black Part 32171pr0031 Element 4120027 ×1
  • Packaging, Case, Bottom, Throwbot / Slizer 'Flying' Black Part 32194 ×1
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×1
  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×1
  • Technic Axle Connector 2 x 3 with Ball Socket, Open Sides Black Part 32174 Element 4119328 ×4
  • Technic Beam 1 x 7 with Fan Black Part 32177 Element 4586837 or 4260659 ×2
  • Technic Block 3 x 6 x 1 & 2/3 Black Part 32165 Element 4130588 or 4119352 ×1
  • Technic Connector Block 3 x 3 Triangular with Axle, and Pin Hole Black Part 32175 Element 4287635 or 4249261 ×2
  • Technic Gear 8 Tooth Black Part 3647 Element 4120181 ×2
  • Technic Gear Rack Double with Ball Joint Black Part 32170 Element 4119305 ×1
  • Technic Pin Connector Block 3 x 3 x 1 Black Part 32172 Element 4119317 ×2
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×2

Yellow 12 pieces

  • Large Figure Skeletal, Arm Forked with Flexible Center and Ball Joint Yellow Part 32168 Element 4119296 ×2
  • Large Figure Skeletal, Limb, Angular, 2 x 7 with 2 Ball Joints Yellow Part 32173 Element 4528082 or 4193775 ×2
  • Large Figure Visor / Limb Cover, Armour with Jet / Judge Print Yellow Part 32169pr0007 Element 4119584 ×1
  • Packaging, Case, Lid, Throwbot / Slizer 'Flying' Yellow Part 32176 ×1
  • Propeller 3 Blade 5.5 Diameter with Hole for Technic Pin Yellow Part 4617b Element 461774 or 461724 ×2
  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Yellow Part 6553 Element 655324 ×1
  • Technic Axle Connector 2 x 3 with Ball Socket, Open Sides Yellow Part 32174 Element 4120123 ×1
  • Technic Rectangular Gearbox Half Yellow Part 32167 Element 4119294 ×2

Light Gray 9 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×4
  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×1
  • Technic Bush 1/2 Smooth with Axle Hole Reduced Light Gray Part 32123a ×4

Dark Gray 2 pieces

  • Technic Axle 3 with Stud Dark Gray Part 6587 Element 4113884 or 658727 ×2

Tan 1 piece

  • Large Figure Throwing Disk, Granite / Rock, 3 Pips, Granite Throwing Disk Print Tan Part 32171pr0044 Element 4120052 ×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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