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.

Remote Controlled Decoupling

Checking

7862 Remote Controlled Decoupling

16 pieces in 13 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

Light Gray 11 pieces

  • Bracket 2 x 3 - 1 x 3 (Train Signal Stand) Light Gray Part 4169 Element 416902 ×1
  • Control Unit, Train 12V, 8 x 10 with Train Decoupler Print Light Gray Part 4707c02 ×1
  • Control Unit, Train, 12V 4 x 8 x 1 2/3 Remote Control Switch Motor Light Gray Part 70026 Element 70026 ×1
  • Plate 2 x 8 Light Gray Part 3034 Element 303402 ×2
  • Support 1 x 16 Lattice (Train Signal Mast) Light Gray Part 4168 Element 416802 ×1
  • Train, Track 12V Decoupler Base Rotor Light Gray Part upn0357 ×1
  • Vehicle Track, Train, 12V Conducting Rail Straight for 12v Remote Controlled Decoupling Light Gray Part 3242e ×1
  • Vehicle Track, Train, Slotted Rail Straight Light Gray Part 3228b Element 322802 ×2
  • Wire with 2-Prong Connectors, 12V / 4.5V 190L Light Gray Part 766c190 Element 73492 ×1

Dark Gray 3 pieces

  • Train Track Sleeper Plate 2 x 8 without Cable Grooves Dark Gray Part 767 ×2
  • Vehicle Track, Train, 12V Decoupler Base Dark Gray Part upn0380 ×1

Black 2 pieces

  • Brick 1 x 2 x 2 with Yellow Triangle Print Black Part 3245bpr0002 ×1
  • Train, Track 12V Decoupler Base Rip Cord Black Part upn0356 ×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.