Free tool

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.

Red & Blue Player

Checking

3559 Red & Blue Player

39 pieces in 21 part and color combinations.

LEGO counts 40 pieces. This inventory comes from a separate parts catalog and lists 39; 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.

Show

Piece checklist

Technic Pins 12 pieces

  • Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×4
  • Technic Pin 3/4 Dark Gray Part 32002 Element 4109854 1 spare in the box ×4
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 1 spare in the box ×4

Technic Beams 8 pieces

  • Technic Beam 1 x 2 Thin Black Part 41677 Element 6338428 or 4167726 ×1
  • Technic Beam 1 x 5 Thick Blue Part 32316 Element 4142134 or 4128591 ×2
  • Technic Beam 1 x 3 Thick Pearl Light Gray Part 32523 Element 4201554 ×1
  • Technic Beam 1 x 2 Thin Red Part 41677 Element 6371442 or 4186678 ×1
  • Technic Beam 1 x 5 Thick Red Part 32316 Element 4142132 or 4128589 ×2
  • Technic Beam 1 x 3 Thick Yellow Part 32523 Element 4153707 ×1

Technic Connectors 8 pieces

  • Technic Connector Block 3 x 3 Triangular with Axle, and Pin Hole Blue Part 32175 Element 4203488 or 4119335 ×1
  • Technic Axle Connector with Axle Hole Red Part 32039 Element 4118897 ×1
  • Technic Axle and Pin Connector Perpendicular Red Part 6536 Element 6261373 or 4188298 ×2
  • Technic Connector Block 3 x 3 Triangular with Axle, and Pin Hole Red Part 32175 Element 4249268 or 4186853 ×1
  • Technic Axle Connector with Axle Hole Yellow Part 32039 Element 4107800 or 3203924 ×2
  • Technic Axle and Pin Connector Angled #3 - 157.5° Yellow Part 32016 Element 6430834 or 4285186 ×1

Large Buildable Figures 7 pieces

  • Large Figure Accessory, Hockey Puck [No Axlehole] Black Part 44848 Element 4196746 or 4185389 ×1
  • Large Figure Shoulder Cover, Armour Black Part 43559 Element 4201224 ×1
  • Large Figure Shoulder Cover, Armour Blue Part 43559 Element 4201206 ×1
  • Large Figure Weapon, Claw / Tooth / Hook 2 x 3 with Axle and Hole Pearl Light Gray Part 42074 Element 4175943 ×4

String, Bands and Reels 2 pieces

  • Rubber Band 15mm [Square Cross Section] Black Part 23229 Element 4141604 2 spares in the box ×2

Technic Axles 2 pieces

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

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.