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.

Axles and Extenders

Checking

9943 Axles and Extenders

54 pieces in 9 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 42 pieces

  • Technic Axle 10 Black Part 3737 Element 373726 ×6
  • Technic Axle 12 Black Part 3708 Element 370826 ×6
  • Technic Axle 3 Black Part 4519 Element 6238084 or 451926 ×6
  • Technic Axle 4 Black Part 3705 Element 370526 ×6
  • Technic Axle 5 Black Part 32073 Element 4114740 ×6
  • Technic Axle 6 Black Part 3706 Element 370626 ×6
  • Technic Axle 8 Black Part 3707 Element 370726 ×6

Dark Gray 6 pieces

  • Technic Axle 3 with Stud Dark Gray Part 6587 Element 4113884 or 658727 ×6

Light Gray 6 pieces

  • Technic Axle Connector Ridged [with + Hole + Orientation] Light Gray Part 6538a ×6

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.