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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.

Aqua Dozer

Checking

2161 Aqua Dozer

132 pieces in 56 part and color combinations, plus 1 minifigure.

LEGO counts 136 pieces. This inventory comes from a separate parts catalog and lists 137, including the 5 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.

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Piece checklist

Plates 24 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×5
  • Plate 1 x 4 Black Part 3710 Element 371026 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×2
  • Plate 1 x 2 Green Part 3023 Element 302328 ×12
  • Plate 2 x 2 Green Part 3022 Element 302228 ×3
  • Plate 2 x 4 Green Part 3020 Element 302028 ×1

Bricks Special 17 pieces

  • Brick Special 2 x 4 with Pins Dark Gray Part 6249 Element 4143669 or 4100411 ×2
  • Brick Special 1 x 1 with Headlight Green Part 4070 Element 4187334 or 4109676 ×4
  • Brick Special 1 x 2 with Grille Green Part 2877 Element 6078096 or 287728 ×2
  • Brick Special Octagonal 2 x 2 x 3 1/3 with Side Studs Green Part 6042 Element 4247907 or 4109671 ×5
  • Brick Special Octagonal 2 x 3 x 1 2/3 Sloped Green Part 6032 Element 4247918 or 4109672 ×4

Transportation - Sea and Air 14 pieces

  • Cockpit 6 x 6 x 1 Cabin Base Black Part 4597 Element 4167781 or 459726 ×1
  • Wing, Tail 4 x 1 x 3 Black Part 2340 Element 6591863 or 4651541 ×4
  • Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders] Green Part 3475b Element 4109677 or 347528 ×2
  • Propeller Housing Green Part 6040 Element 4109664 or 604028 ×2
  • Propeller 3 Blade 3 Diameter with Axle Cross Trans-Neon Green Part 6041 Element 4143702 or 4109665 ×5

Bricks Sloped 12 pieces

  • Brick Sloped 33° 3 x 2 Black Part 3298 Element 329826 ×1
  • Brick Sloped 45° 2 x 1 with Bottom Pin Black Part 3040b Element 4121966 or 304026 ×2
  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×3
  • Brick Sloped 45° 2 x 2 with Horizon Screen Print Black Part 3039pr9973 Element 4240154 or 82056 ×2
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Black Part 3747a ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Yellow Part 3660 Element 366024 ×3

Tiles Special 10 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Trans-Neon Green Part 2412b Element 4272661 or 4109766 ×9
  • Tile Special 2 x 2 with Top Pin Yellow Part 2460 Element 246024 ×1

Plates Special 9 pieces

  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] Black Part 4085c Element 408526 ×2
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 6mm] Black Part 4623 Element 4597267 or 462326 ×2
  • Plate Special 10 x 10 Octagonal Opening Black Part 6063 Element 4107535 ×1
  • Wedge Plate 8 x 6 x 2/3 with Grille Black Part 30036 Element 6534034 or 4160752 ×2
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Yellow Part 2444 Element 244424 ×2

Bricks 7 pieces

  • Brick 1 x 12 Black Part 6112 Element 611226 ×2
  • Brick 1 x 16 Green Part 2465 Element 6390362 or 4162401 ×1
  • Brick 1 x 3 Green Part 3622 Element 4109679 or 362228 ×4

Technic Pins 6 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×2
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×4

Plates Wedged 5 pieces

  • Wedge Plate 10 x 10 with 4x4 Cutout and Cut Corner Black Part 2401 Element 240126 ×2
  • Wedge Plate 3 x 6 Cut Corners Black Part 2419 Element 241926 ×1
  • Wedge Plate 6 x 6 Cut Corner Black Part 6106 Element 4106977 or 610626 ×2

Hinges, Arms and Turntables 4 pieces

  • Hinge Brick 1 x 2 Base Black Part 3937 Element 393726 ×3
  • Hinge Brick 1 x 2 Top Plate Thin Yellow Part 3938 Element 6078086 or 393824 ×1

Minifig Shields, Weapons, & Tools 4 pieces

  • Weapon Dagger / Knife Chrome Silver Part 37 Element 70749 ×2
  • Weapon Harpoon [4 Grooves on Shaft] Chrome Silver Part 57467 ×2

Minifig Accessories 3 pieces

  • Equipment Compass with White Lines, Yellow Letters Print Black Part 70001pr0001 Element 75171 ×1
  • Minifig Footwear Flipper [Thin] Black Part 59275 ×2

Bricks Round and Cones 2 pieces

  • Cone 2 x 2 x 1 2/3 Octagonal, Open Stud Green Part 6039 Element 4247942 or 4109669 ×2

Stickers 2 pieces

  • Sticker Sheet 1 for Set 2160-1, 2161-1, 2162-1 [No Color/Any Color] Part 71625 Element 4109655 ×1
  • Sticker Sheet 2 for Set 2161-1 [No Color/Any Color] Part 71627 Element 4109653 ×1

String, Bands and Reels 2 pieces

  • Chain 17L [21 Links] Dark Gray Part 30104 Element 4106728 ×2

Technic Axles 2 pieces

  • Technic Axle 3 with Stud Dark Gray Part 6587 Element 4113884 or 658727 ×2

Technic Bricks 2 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×2

Tiles 2 pieces

  • Tile 1 x 2 with Blue Screen, Red and Silver Panel Print Black Part 3069bpr0040 Element 82058 ×1
  • Tile 2 x 2 with Blue Screen, Silver and Red Panel Print Black Part 3068bpr0059 Element 82117 ×1

Rock 1 piece

  • Rock 1 x 1 Crystal 5 Point Chrome Silver Part 30385 Element 4119342 ×1

Technic Connectors 1 piece

  • Technic Axle Connector Ridged [with x Hole x Orientation] Light Gray Part 6538b Element 4113804 or 4100408 ×1

Technic Special 1 piece

  • Technic Digger Bucket 8 x 10 Black Part 2951 Element 6023352 or 4288259 ×1

Tubes and Hoses 1 piece

  • Flexible Hose 8.5L with Tabbed Ends (Ends same color as Tube) Black Part 73590c02a Element 4540890 or 621130 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 10 x 10 x 4 Octagonal Canopy Trans-Neon Green Part 2598 Element 4109764 ×1

Minifigures 1 figure

  • Aquaraider 2 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.

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