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.
172 pieces in 91 part and color combinations, plus 3 minifigures.
LEGO counts 184 pieces. This inventory comes from a separate parts catalog and lists 185, including the 13 parts inside the minifigures; the two do not always count the same elements, so their totals differ. 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.
Technic Pin 1/2 with 2L Bar ExtensionLight Bluish GrayPart 61184Element 6347715 or 4520320×4
Technic Pin 1/2 without Friction RidgesLight Bluish GrayPart 4274Element 4274194 or 42114831 spare in the box×1
Technic Pin without Friction Ridges LengthwiseLight Bluish GrayPart 3673Element 4211807 or 36731941 spare in the box×1
Tile 1 x 2 with Red 82, Yellow and White Gauges PrintLight Bluish GrayPart 3069bpr0101Element 4227776×1
Wheel Holder 2 x 2 Thin with Clips, Plane SingleLight Bluish GrayPart 2415Element 6321198 or 4211351×3
Dark Bluish Gray
25 pieces
Hinge Plate 1 x 2 Locking with 1 Finger On End, without GrooveDark Bluish GrayPart 44301bElement 6266225×2
Hook with TowballDark Bluish GrayPart 30395Element 30395199 or 6347464×1
Plate Round 1 x 1 with Solid StudDark Bluish GrayPart 6141Element 42106332 spares in the box×8
Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle)Dark Bluish GrayPart 6553Element 4210665×1
Technic Axle 5.5 with Stop [Rounded Short End]Dark Bluish GrayPart 59426Element 4508553×1
Technic Axle and Pin Connector Angled #1Dark Bluish GrayPart 32013Element 32013199 or 6296856×2
Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening]Dark Bluish GrayPart 32064b×1
Tile 1 x 3Dark Bluish GrayPart 63864Element 4568734×1
Tile Special 1 x 1 with Clip with Rounded TipsDark Bluish GrayPart 12825Element 6030710×2
Tile Special Round 2 x 2 with HoleDark Bluish GrayPart 15535Element 6055313×1
Tool Grappling HookDark Bluish GrayPart 30192Element 6270008 or 4211079×2
Wheel Centre Small with Stub Axles (Pulley Wheel)Dark Bluish GrayPart 3464Element 6005463×3
Yellow
12 pieces
Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope EndYellowPart 47457Element 4218699×1
Brick Round 2 x 2 with Axle HoleYellowPart 3941Element 614324 or 394124×1
Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / GrateYellowPart 61409Element 4540384 or 4521167×2
Plate 1 x 4YellowPart 3710Element 371024×1
Plate 4 x 4YellowPart 3031Element 4243817 or 303124×1
Plate Round 1 x 1 with Solid StudYellowPart 6141Element 6141241 spare in the box×1
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)YellowPart 4032aElement 403224×3
Plate Special 2 x 2 with 1 Pin Hole [Complete Underside Rib]YellowPart 10247Element 6061025×2
Blue
7 pieces
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×2
Technic Brick 1 x 2 [1 Pin Hole]BluePart 3700Element 370023×1
Technic Pin 1/2 without Friction RidgesBluePart 4274Element 41430051 spare in the box×4
Red
7 pieces
Bracket 1 x 2 - 2 x 2 InvertedRedPart 99207Element 6001806×1
Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / GrateRedPart 61409Element 4540382 or 4535102×2
Equipment Dynamite SticksRedPart 64728Element 6270088 or 4538780×2
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]RedPart 2654Element 4617080 or 4278275×1
Wedge Plate 3 x 6 Cut CornersRedPart 2419Element 241921×1
Trans-Orange
6 pieces
Cone 1 x 1 [Top Groove]Trans-OrangePart 59900Element 6514017 or 6172233×4
Plate Round 1 x 1 with Solid StudTrans-OrangePart 6141Element 6514059 or 62402271 spare in the box×1
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]Trans-OrangePart 2654Element 6513980 or 6171727×1
Pearl Titanium
2 pieces
Arm Mechanical with Clip [Thick Support]Pearl TitaniumPart 98313Element 6276869 or 6008484×2
Trans-Yellow
2 pieces
Plate 1 x 1Trans-YellowPart 3024Element 6513966 or 62520452 spares in the box×2
[No Color/Any Color]
2 pieces
Comic Book, Super Heroes, DC Comics, Batman[No Color/Any Color]Part 6070937Element 6070939 or 6070937×1
Sticker Sheet for Set 76011-1[No Color/Any Color]Part 15871Element 6078415 or 6055636×1
Dark Tan
1 piece
Technic Axle 3 with StudDark TanPart 6587Element 6031821 or 6013821×1
Tan
1 piece
Brick Sloped 45° 2 x 2TanPart 3039Element 4114322×1
Trans-Brown
1 piece
Windscreen 8 x 4 x 2 with 4 Studs and HandleTrans-BrownPart 92579Element 6507964 or 6254293×1
Minifigures
3 figures
Batman, Black Suit, Black Cape and Cowl, Yellow Batman Logo (56630 Cape) (3626b Head)Minifigure, checked as a whole figure×1
Man-BatMinifigure, checked as a whole figure×1
Nightwing with Dark Red Eyes and Dark Red Chest SymbolMinifigure, 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.
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.