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The Workshop Sheet 10 of 22

LEGO Missing Piece Checker

Enter a set number, mark each piece found or missing, and leave with a list of what is missing, the element IDs LEGO asks for and links to buy the parts. It is free and needs no account. Rule out the usual hiding places first.

Scuba / Sub Slizer

Checking

8503 Scuba / Sub Slizer

39 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

Technic Connectors 12 pieces

  • Technic Connector Block 3 x 3 Triangular with Axle, and Pin Hole Blue Part 32175 Element 4203488 or 4119335 ×2
  • Technic Gearbox Half Blue Part 32166 Element 4119292 ×2
  • Technic Axle Connector 2 x 3 with Ball Socket, Open Sides Medium Blue Part 32174 Element 4257225 or 4119332 ×5
  • Technic Block 3 x 6 x 1 & 2/3 Medium Blue Part 32165 Element 4130590 or 4119289 ×1
  • Technic Pin Connector Block 3 x 3 x 1 Medium Blue Part 32172 Element 4119319 ×2

Large Buildable Figures 5 pieces

  • Large Figure Skeletal, Arm Forked with Flexible Center and Ball Joint Blue Part 32168 Element 4119301 ×1
  • Large Figure Skeletal, Limb, Angular, 2 x 7 with 2 Ball Joints Blue Part 32173 Element 4119325 ×3
  • Large Figure Visor / Limb Cover, Armour with Scuba / Sub Print Blue Part 32169pr0011 Element 4119585 ×1

Technic Axles 4 pieces

  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×1
  • Technic Axle 5 Black Part 32073 Element 4114740 ×1
  • Technic Axle 6 Black Part 3706 Element 370626 ×2

Technic Bushes 4 pieces

  • Technic Bush 1/2 Smooth with Axle Hole Reduced Light Gray Part 32123a ×4

Technic Gears 3 pieces

  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Blue Part 3648b Element 4120110 ×1
  • Technic Gear 8 Tooth Blue Part 3647 Element 4120103 1 spare in the box ×1
  • Technic Worm Gear Yellow Part 4716 Element 4120101 ×1

Gear Parts 2 pieces

  • Packaging, Case, Bottom, Throwbot / Slizer 'Flying' Blue Part 32194 ×1
  • Packaging, Case, Lid, Throwbot / Slizer 'Flying' Medium Blue Part 32176 ×1

Projectiles / Launchers 2 pieces

  • Large Figure Throwing Disk, Turbo / City, 3 Pips, Turbo Throwing Disk Print Dark Turquoise Part 32171pr0020 Element 4120046 ×1
  • Large Figure Throwing Disk, Scuba / Sub, 2 Pips, Waterdrop Logo Print Yellow Part 32171pr0025 Element 4120033 ×1

Technic Pins 2 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×2

Minifig Shields, Weapons, & Tools 1 piece

  • Weapon Spear Gun with Rounded Trigger and Thin Spear Base Yellow Part 30088 Element 4106936 ×1

Plates 1 piece

  • Plate 1 x 2 Blue Part 3023 Element 302323 ×1

Plates Special 1 piece

  • Plate Special 1 x 2 Side Handle [Free Ends] Yellow Part 2540 Element 4140587 or 254024 ×1

Transportation - Sea and Air 1 piece

  • Propeller 3 Blade 3 Diameter with Axle Cross Yellow Part 6041 Element 604124 ×1

Tubes and Hoses 1 piece

  • Hose Soft 3mm D. 12L Yellow Part 46215c12 Element 4119593 ×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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