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.

Robo Chopper

Checking

3872 Robo Chopper

22 pieces in 18 part and color combinations, plus 1 minifigure.

The piece count includes the 7 parts inside the set's minifigures, which this inventory lists separately. 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

Black 15 pieces

  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Black Part 3747b Element 4500458 or 374726 ×1
  • Equipment Camera with Side Sight [aka Space Gun] Black Part 4360 Element 436026 ×1
  • Plate 1 x 6 Black Part 3666 Element 366626 ×2
  • Plate 2 x 3 Black Part 3021 Element 302126 ×1
  • Plate 2 x 4 Black Part 3020 Element 302026 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] Black Part 4085c Element 408526 ×1
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 6mm] Black Part 4623 Element 4597267 or 462326 ×2
  • Technic Axle 6 Black Part 3706 Element 370626 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Black Part 32184 Element 6276951 or 4121667 ×1
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Black Part 32064b ×1
  • Technic Cylinder 4 x 4 with Pin Holes and Centre Bar, Closed Sides on Bar Black Part 41531 Element 6116995 or 4262615 ×2
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 1 spare in the box ×1

Trans-Red 3 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Red Part 54200 Element 6245252 or 4244363 1 spare in the box ×2
  • Cone 1 x 1 [No Top Groove] Trans-Red Part 4589 Element 618841 ×1

Light Bluish Gray 2 pieces

  • Equipment Binoculars Light Bluish Gray Part 30162 Element 4550170 or 4212313 ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×1

Yellow 2 pieces

  • Brick Curved 2 x 2 No Studs - 3 Recessed Side Ports Yellow Part 44675 Element 4185269 ×1
  • Tail Shuttle - Small Yellow Part 44661 Element 6551142 or 6253366 ×1

Minifigures 1 figure

  • Devastator with Trans-Red Torso Minifigure, checked as a whole figure ×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.