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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.

Checking

70611 Water Strider

473 pieces in 130 part and color combinations, plus 4 minifigures.

The official piece count includes the 21 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.

Every bag and the box. Shake out each bag, check its corners and seams, and look inside the empty box.
Inside what you have built. Small pieces lodge inside tubes, under plates and between studs. Turn the model over and look.
The last few steps. Compare each recent step with its parts callout. A piece used in the wrong place earlier leaves you one short later.
Look-alike colors. 3 parts in this set come in two colors that are easy to mix up; they are listed below.
The spare pieces. This set comes with 19 spare pieces, marked on each row of the checklist. One may be the piece you need.
The floor and your building area. Check under furniture, the chair and the edges of your building surface.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

Brick Curved 1 x 2 x 1 1/3 with Curved Top Black ×8 Dark Bluish Gray ×4 Black is darker than Dark Bluish Gray.
Plate 1 x 6 Black ×2 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.
Plate Round 4 x 4 with Pin Hole Black ×2 Dark Bluish Gray ×4 Black is darker than Dark Bluish Gray.

Piece checklist

Technic Pins 84 pieces

Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 2 spares in the box ×28
Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×2
Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×6
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×4
Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 3 spares in the box ×44

Bricks Curved 44 pieces

Brick Curved 1 x 2 x 1 1/3 with Curved Top Black Part 6091 Element 6383142 or 6184784 Also in Dark Bluish Gray ×8
Brick Curved 10 x 1 [Symmetric Inside Ridges] Black Part 13731 Element 6037664 ×8
Brick Curved 2 x 2 x 2/3 Black Part 15068 Element 6053077 ×6
Brick Curved 4 x 2 No Studs Black Part 93606 Element 4647286 ×6
Brick Curved 1 x 2 x 1 1/3 with Curved Top Dark Bluish Gray Part 6091 Element 6411327 or 4210797 Also in Black ×4
Brick Curved 2 x 1 No Studs [1/2 Bow] Light Bluish Gray Part 11477 Element 6028813 ×8
Brick Curved 2 x 2 x 2/3 Light Bluish Gray Part 15068 Element 6102357 ×4

Technic Axles 18 pieces

Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×4
Technic Axle 6 Black Part 3706 Element 370626 ×1
Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×1
Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×1
Technic Axle 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×4
Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×2
Technic Axle 4 Red Part 3705 Element 6129995 or 4265797 ×1
Technic Axle 3 with Stop Reddish Brown Part 24316 Element 6135494 ×4

Bricks 14 pieces

Brick 1 x 4 Black Part 3010 Element 301026 ×1
Brick 1 x 4 Blue Part 3010 Element 301023 ×4
Brick 1 x 2 Tan Part 3004 Element 4109995 or 300405 ×1
Brick 1 x 1 Trans-Light Blue Part 3005 Element 6514210 or 6240551 ×8

Technic Bushes 14 pieces

Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 2 spares in the box ×14

Tiles 14 pieces

Tile 1 x 6 with Groove Black Part 6636 Element 663626 ×4
Tile 2 x 2 Corner Blue Part 14719 Element 6129747 ×2
Tile 1 x 4 with Groove Trans-Light Blue Part 2431 Element 6510178 or 6252049 ×8

Technic Connectors 13 pieces

Technic Pin Connector Round [Slotted] Black Part 62462 Element 6173119 or 4526982 ×4
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Dark Bluish Gray Part 42003 Element 6273715 or 4210857 ×4
Technic Pin Connector Round [Slotted] Flat Silver Part 62462 Element 6245499 or 6054858 ×2
Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Light Bluish Gray Part 6553 Element 4211536 ×2
Technic Axle Connector Smooth [with x Hole + Orientation] Red Part 59443 Element 4513174 ×1

Bricks Sloped 11 pieces

Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] Black Part 15672 Element 6069000 or 4653087 ×8
Brick Sloped Inverted 45° 6 x 2 Double with 2 x 4 Recessed Black Part 22889 Element 6131571 ×1
Brick Sloped 30° 1 x 2 x 2/3 Blue Part 85984 Element 4651236 ×1
Brick Sloped 30° 1 x 2 x 2/3 Tan Part 85984 Element 4624086 ×1

Bars, Ladders and Fences 10 pieces

Bar 6L with Stop Ring Black Part 63965 Element 6170421 or 6081988 ×3
Bar Holder with Clip Black Part 11090 Element 6315887 or 6015891 ×3
Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip] Dark Bluish Gray Part 48729b Element 6278155 or 4579234 1 spare in the box ×4

Technic Beams Special 10 pieces

Technic Pin Connector Double with Bar [2 Holes] Black Part 85940 Element 6173124 or 4562148 ×2
Technic Rotation Joint Disk with Pin Hole and 3L Beam Thick Dark Bluish Gray Part 44224 Element 4182751 ×4
Technic Rotation Joint Disk with Pin and 3L Beam Thick Light Bluish Gray Part 44225 Element 6671155 or 6332151 ×4

Bricks Round and Cones 8 pieces

Brick Round 2 x 2 Truncated Cone Black Part 98100 Element 4653822 ×1
Brick Round 4 x 4 Centre Hole Black Part 87081 Element 4558957 ×1
Brick Round 2 x 2 [Grill] Light Bluish Gray Part 92947 Element 4650645 or 4610816 ×1
Cone 1 x 1 [Top Groove] Trans-Dark Blue Part 59900 Element 6514018 or 6301313 ×3
Cylinder Half 2 x 4 x 5 with 1 x 2 cutout Trans-Light Blue Part 85941 Element 6514133 or 6246874 ×2

Technic Special 8 pieces

Technic Brick Special 2 x 2 with Ball and Axle Hole, with 6 Holes in Ball Dark Bluish Gray Part 57909b Element 4497253 ×4
Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole Trans-Light Blue Part 92013 Element 6045980 ×4

Tiles Round and Curved 8 pieces

Tile Round 2 x 2 with Bottom Stud Holder Black Part 14769 Element 6070695 ×4
Tile Round 1 x 1 Light Bluish Gray Part 98138 Element 6284071 or 4650260 1 spare in the box ×4

Bricks Special 7 pieces

Brick Special 2 x 2 with Grooves and Axle Hole Dark Bluish Gray Part 90258 Element 6236949 or 4583879 ×1
Brick Special 2 x 4 x 1 1/3 with Pin Holes and 2 x 2 Recessed Dark Bluish Gray Part 18975 Element 6150297 or 6105731 ×1
Brick Special 1 x 1 Studs on 4 Sides Light Bluish Gray Part 4733 Element 4211511 ×1
Brick Special 1 x 1 with Clip Horizontal Light Bluish Gray Part 60476 Element 6320306 or 4535764 ×4

Technic Beams 7 pieces

Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Black Part 60483 Element 6265091 or 6006140 ×2
Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 ×1
Technic Beam 1 x 9 Thick Black Part 40490 Element 4645732 or 4542788 ×4

Technic Bricks 6 pieces

Technic Brick 1 x 10 [9 Pin Holes] Black Part 2730 Element 273026 ×4
Technic Brick 4 x 6 with 2 x 4 Opening Black Part 32531 Element 6456527 or 4162508 ×1
Technic Brick 1 x 4 [3 Pin Holes] Light Bluish Gray Part 3701 Element 4211441 ×1

Tubes and Hoses 6 pieces

Hose, Ribbed 7mm D. 9L / 7.2cm Black Part 78c09 Element 6443871 or 6420612 ×2
Flexible Ribbed Hose 8mm Ends 10L Flat Silver Part 27328 Element 6194553 ×4

Technic Gears 5 pieces

Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×2
Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] Black Part 18575 Element 6346535 or 6093977 ×1
Technic Knob Wheel Black Part 32072 Element 6284188 or 4248204 ×1
Technic Gear 20 Tooth Bevel with Pin Hole Light Bluish Gray Part 87407 Element 4558690 ×1

Flags, Banners and Signs 4 pieces

Flag 2 x 2 Square, Flat Clip Edge [Thick Clips] Blue Part 11055 Element 6011816 ×4

Technic Steering, Suspension and Engine 4 pieces

Technic Motorcycle Pivot Black Part 2904 Element 6181757 or 4543263 ×4

Transportation - Land 4 pieces

Exhaust Pipe with Technic Pin - Flat End, Rounded Hole Light Bluish Gray Part 14682 Element 6044706 ×4

Wheels and Tyres 4 pieces

Technic Wedge Belt Wheel [aka Pulley] Dark Bluish Gray Part 4185 Element 6321744 or 4587275 ×4

Hinges, Arms and Turntables 3 pieces

Turntable 4 x 4 Square Base, Locking Black Part 61485 Element 4517986 ×1
Hinge Brick 1 x 2 Base Blue Part 3937 Element 393723 ×1
Hinge Brick 1 x 2 Top Plate Thin Light Bluish Gray Part 3938 Element 4211470 ×1

Minifig Accessories 3 pieces

Tassel with 1 x 1 Round Stud Black Part 25375 Element 6274710 or 6169986 ×1
Equipment Hose Nozzle / Gun with Side String Hole Simplified Light Bluish Gray Part 60849 Element 6641461 or 4515897 1 spare in the box ×2

Minifig Shields, Weapons, & Tools 3 pieces

Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] Flat Silver Part 21459 Element 6116593 1 spare in the box ×2
Weapon Pike / Spear Elaborate with Flat Silver Tip Reddish Brown Part 90391pr0003 Element 6199199 ×1

Plates Wedged 3 pieces

Wedge Plate 2 x 2 Left Black Part 24299 Element 6141554 ×1
Wedge Plate 2 x 2 Right Black Part 24307 Element 6141556 ×1
Wedge Plate 2 x 4 Light Bluish Gray Part 51739 Element 4507056 or 4252368 ×1

Animals / Creatures 2 pieces

Animal, Fish [Hollow Stud Mouth] Bright Light Blue Part 64648 Element 6195347 ×2

Projectiles / Launchers 2 pieces

Launcher, Weapon Rapid Shooter Six Barrel, 3 Fingers Black Part 18588 Element 6100104 ×1
Launcher Trigger, Weapon Rapid Shooter, Flat Axle Hole Light Bluish Gray Part 18587 Element 6097090 ×1

Technic Panels 2 pieces

Technic Panel Fairing # 3 Small Smooth Long, Side A Black Part 64683 Element 4541924 ×1
Technic Panel Fairing # 4 Small Smooth Long, Side B Black Part 64391 Element 4541325 ×1

Tiles Special 2 pieces

Tile Special Round 2 x 2 with Hole Dark Bluish Gray Part 15535 Element 6055313 ×2

Animal / Creature Body Parts 1 piece

Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Flat Silver Part 53451 Element 6270108 or 4612901 1 spare in the box ×1

Bricks Wedged 1 piece

Brick Wedged, Curved 4 x 3 No Studs [Plain] Black Part 64225 Element 6009018 or 4539743 ×1

Stickers 1 piece

Sticker Sheet for Set 70611-1 [No Color/Any Color] Part 33389 Element 186789 ×1

Windscreens and Fuselage 1 piece

Windscreen 6 x 10 x 4 Curved Trans-Clear Part 18729 Element 6261341 or 6187664 ×1

Minifigures 4 figures

Kai (LEGO Ninjago Movie) Minifigure, checked as a whole figure ×1
Puffer Minifigure, checked as a whole figure ×1
Shark Army Thug Minifigure, checked as a whole figure ×1
Nya with Cloth Skirt (LEGO Ninjago Movie) 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.