BlockTalk Find Your Set

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.

Batcave Challenge

Checking

10842 Batcave Challenge

73 pieces in 41 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.

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Piece checklist

Duplo, Quatro and Primo 69 pieces

  • Duplo Batman Bat-a-Rang / Boomerang Black Part 16701 Element 6303358 or 6064124 ×1
  • Duplo Brick 1 x 3 x 2 Round Top, Cut Away Sides with Batman Logo Print Black Part 14222pr0005 Element 6171064 or 6070649 ×1
  • Duplo Brick 2 x 3 with Curved Top Black Part 2302 Element 6475449 or 6172448 ×2
  • Duplo Brick 3 x 2 x 2 Slope Black Part 63871 Element 6172447 or 6001662 ×2
  • Duplo Cannon, Shooting with Axle Hole and Red Firing Button, with Batman Logo Print Black Part 17178c01pr0001 Element 6172148 or 6069193 ×1
  • Duplo Cape with Elastic Loop Black Part 17478 Element 6145269 ×1
  • Duplo Car Base 2 x 4 with Fixed Axles - 27.5 Yellow Wheels and Black Tires Black Part 12592c02 Element 6246959 or 6201043 ×1
  • Duplo Car Body, Batmobile with Batman Logo Print Black Part 17317pr0001 Element 6303085 or 6070190 ×1
  • Duplo Motorcycle with Rubber Wheels, Windscreen and Batman Logo, Headlights Print Black Part 93702c03pr0003 Element 6174451 ×1
  • Duplo Train Crossing Gate Base / Crane Base with Bottom Hole Black Part 13358 Element 6036717 ×2
  • Duplo Brick 1 x 2 x 2 with Bottom Tube Blue Part 76371 Element 6040229 ×2
  • Duplo Brick 2 x 2 Slope 45° Blue Part 6474 Element 4548880 or 647423 ×1
  • Duplo Brick 2 x 2 Slope 45° with Display Batmobile Print Blue Part 6474pr0001 Element 6170930 ×1
  • Duplo Brick 2 x 4 Blue Part 3011 Element 4290075 or 301123 ×4
  • Duplo Plate 2 x 4 Blue Part 40666 Element 4170804 ×2
  • Duplo Plate 2 x 6 Blue Part 98233 Element 6172227 ×2
  • Duplo Plate Round 4 x 4 Blue Part 98222 Element 6001660 ×1
  • Duplo Brick 2 x 2 Light Bluish Gray Part 3437 Element 4583794 or 4266228 ×8
  • Duplo Plate 2 x 4 Light Bluish Gray Part 40666 Element 4506364 or 4289611 ×2
  • Duplo Plate 6 x 12 Light Bluish Gray Part 4196 Element 6139232 or 6100459 ×2
  • Duplo Brick 2 x 2 - Grooved Pin on Side Lime Part 22881 Element 6127191 ×1
  • Duplo Brick 1 x 2 x 2 Brick Effect Medium Azure Part 25550 Element 6172452 ×2
  • Duplo Brick 1 x 2 x 2 with Bottom Tube Medium Azure Part 76371 Element 6101124 ×6
  • Duplo Brick 2 x 2 Medium Azure Part 3437 Element 6054619 ×5
  • Duplo Door Frame 2 x 4 x 5 Medium Azure Part 92094 Element 6172356 ×2
  • Duplo Chair with 4 Studs and Rounded Back Red Part 12651 Element 6194391 or 6040235 ×1
  • Duplo Fire Extinguisher Red Part 60770 Element 6249394 or 6172446 ×1
  • Duplo Brick 1 x 2 x 2 Trans-Light Blue Part 4066 Element 4164500 ×2
  • Duplo Brick 1 x 2 x 2 with Goblet, Jewelry and Coins Print Trans-Light Blue Part 76371pr0108 Element 6213775 or 6174108 ×1
  • Duplo Wave (Fire, Water, Flame) 2 x 1 x 5 with Non-Marbled Tip Trans-Light Blue Part 51703 Element 6270048 or 4500461 ×1
  • Duplo Door 1 x 4 x 4 with Nine Panes White Part 31171 Element 6122488 ×2
  • Duplo Brick 1 x 2 x 2 with Blue Screen and Number Pad Print Yellow Part 76371pr0102 Element 6170882 ×1
  • Duplo Brick 1 x 2 x 2 with The Joker Print Yellow Part 76371pr0101 Element 6170881 ×1
  • Duplo Cannon Ball 1/2 with Axle Connector and 4 Holes in Top Yellow Part 54043b Element 6172112 ×2
  • Duplo Cape with Elastic Loop Yellow Part 17478 Element 6203539 ×1
  • Duplo Fence Railing 1 x 6, with 6 Posts Yellow Part 12602 Element 6036418 ×1
  • Duplo Ladder with Base Locking Ring, Short (Fire) Yellow Part 19663 Element 6172451 ×1

Non-Buildable Figures (Duplo, Fabuland, etc) 4 pieces

  • Duplo Figure with Long Hair Section in Front, Lime Legs, Lime Hands, Green Leaves Print (Poison Ivy) Bright Green Part 35515pr9999 ×1
  • Duplo Figure Batman with Mask / Cowl Black, with Batman Logo Print Dark Bluish Gray Part 16856pr0016 Element 6206082 or 6107850 ×1
  • Duplo Figure with Thick Hair Combed Forward, Purple Legs and Arms, White Hands, with White Clown Face and Lime Bow on Chest Print (Joker) Dark Purple Part 35516pr0034 Element 6210515 or 6171102 ×1
  • Duplo Figure with Thick Hair Combed Forward, with Bright Green Legs and Hand, Black Arms, and Robin Logo Print Red Part 35516pr0045 Element 6210552 or 6175599 ×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.

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