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.

Lava

Checking

8510 Lava

33 pieces in 18 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.

Show

Piece checklist

Black 19 pieces

  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×4
  • Technic Axle 4 Black Part 3705 Element 370526 ×1
  • Technic Axle 5 Black Part 32073 Element 4114740 ×1
  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×2
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×1
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 ×2
  • Technic Beam 3 x 7 x 2 Fork 3 Fingers Black Part 32308 Element 4140423 ×1
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×4
  • Technic Wheel Holder 7 x 3 Black Part 32306 Element 4140415 ×1
  • Weapon Halberd / Axe Elaborate Black Part 6123 Element 4140508 ×2

Red 10 pieces

  • Packaging Lid, Canister Top, RoboRider Red Part upn0324 ×1
  • Technic Axle Connector Block 3 x 6 with 6 Axleholes Red Part 32307 Element 4140419 ×2
  • Technic Beam 3 x 3 L-Shape Thin Red Part 32056 Element 6609332 or 6271816 ×4
  • Technic Beam 3 x 7 x 2 Fork 3 Fingers Red Part 32308 Element 4140493 ×1
  • Technic Block 3 x 5 x 1 2/3 with RoboRider Lava Print Red Part 32310pr0005 Element 4141016 ×1
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Red Part 32054 Element 4140806 or 4125198 ×1

Light Gray 4 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×2
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×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.