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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

8970 Robo Attack

388 pieces in 146 part and color combinations, plus 6 minifigures.

The official piece count includes the 26 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 15 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.

Plate 1 x 2 Black ×3 Dark Bluish Gray ×4 Black is darker than Dark Bluish Gray.
Tile 2 x 2 with Groove Black ×5 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.
Tile Special 1 x 1 with Clip and Straight Tips Black ×2 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.

Piece checklist

Tiles 22 pieces

Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×2
Tile 2 x 2 with Groove Black Part 3068b Element 306826 Also in Dark Bluish Gray ×5
Tile 1 x 4 with Train Controls Print Dark Bluish Gray Part 2431pr0028 Element 6020825 or 4215740 ×2
Tile 2 x 2 with Groove Dark Bluish Gray Part 3068b Element 4211055 Also in Black ×1
Tile 1 x 1 with White and Red Gauge Print Light Bluish Gray Part 3070bpr0007 Element 4255629 2 spares in the box ×6
Tile 1 x 2 with Red 82, Yellow and White Gauges Print Light Bluish Gray Part 3069bpr0101 Element 4227776 ×1
Tile 1 x 4 with Groove Light Bluish Gray Part 2431 Element 4211356 or 2431194 ×1
Tile 1 x 6 with Groove Metallic Silver Part 6636 Element 4528730 ×4

Bricks Wedged 18 pieces

Brick Wedged, Curved 1 x 2 x 2/3 No Studs, Wing End Black Part 47458 Element 6375706 or 4218581 ×11
Brick Wedged, Sloped 4 x 2 Triple Left Black Part 43710 Element 6040297 or 4180413 ×2
Brick Wedged, Sloped 4 x 2 Triple Right Black Part 43711 Element 6040298 or 4180423 ×2
Brick Wedged, Curved Inverted 6 x 4 Dark Blue Part 43713 Element 6109925 or 4261774 ×2
Brick Wedged, Curved 6 x 4 Triple Light Bluish Gray Part 43712 Element 6101104 or 6030574 ×1

Technic Pins 18 pieces

Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×4
Technic Rotation Joint Ball Loop with Two Perpendicular Pins with Friction Black Part 47455 Element 4272426 or 4213374 ×10
Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×2
Technic Pin 1/2 with 2L Bar Extension Light Bluish Gray Part 61184 Element 6347715 or 4520320 ×2

Bricks Curved 17 pieces

Brick Arch 1 x 6 x 2 Curved Top Black Part 6183 Element 6132770 or 4299388 ×4
Brick Curved 1 x 2 x 1 1/3 with Curved Top Black Part 6091 Element 6383142 or 6184784 ×4
Brick Curved 2 x 2 No Studs - 3 Recessed Side Ports Black Part 44675 Element 6021752 or 4185272 ×4
Brick Curved 2 x 2 with Lip, No Studs Black Part 30602 Element 6476459 or 4143875 ×2
Brick Curved 2 x 2 with Lip, No Studs Orange Part 30602 Element 4169355 ×3

Technic Special 16 pieces

Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Ball Half [Horizontal Top] Dark Bluish Gray Part 48170 Element 6279898 or 4227395 ×4
Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Ball Half [Horizontal Top], Rotation Joint Socket Dark Bluish Gray Part 47452 Element 6021206 or 4636472 ×4
Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Ball Half [Vertical Side] Dark Bluish Gray Part 48171 Element 6492115 or 6343337 ×2
Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Socket Dark Bluish Gray Part 48169 Element 6278974 or 4225973 ×6

Tiles Special 15 pieces

Tile Special 1 x 1 with Clip and Straight Tips Black Part 2555 Element 255526 Also in Dark Bluish Gray ×2
Tile Special 2 x 3 with 2 Clips [Thick U Clips] Black Part 30350c ×2
Tile Special 1 x 1 with Clip and Straight Tips Dark Bluish Gray Part 2555 Element 6031420 or 4211069 Also in Black ×1
Tile Special 1 x 1 with Clip and Straight Tips Light Bluish Gray Part 2555 Element 4211369 or 2555194 ×4
Tile Special 1 x 2 Grille with Bottom Groove Metallic Silver Part 2412b Element 6051422 or 4579833 ×1
Tile Special 1 x 2 Grille with Bottom Groove Orange Part 2412b Element 4125254 or 3933106 ×5

Plates Wedged 13 pieces

Wedge Plate 3 x 3 Cut Corner Black Part 2450 Element 4227684 or 245026 ×4
Wedge Plate 7 x 6 Boat Bow with Stud Notches Black Part 50303 Element 4550190 or 4239365 ×2
Wedge Plate 4 x 4 with 2 x 2 Cutout Dark Bluish Gray Part 43719 Element 6430611 or 6275402 ×1
Wedge Plate 3 x 4 with Stud Notches Light Bluish Gray Part 48183 Element 4240013 ×2
Wedge Plate 4 x 2 Left Metallic Silver Part 41770 Element 6617168 or 4528772 ×2
Wedge Plate 4 x 2 Right Metallic Silver Part 41769 Element 6617169 or 4528770 ×2

Bricks Special 12 pieces

Brick Special 1 x 4 with 4 Studs on One Side Black Part 30414 Element 4162443 ×2
Brick Special 1 x 1 with Headlight Blue Part 4070 Element 407023 ×2
Brick Special 1 x 1 with Headlight Light Bluish Gray Part 4070 Element 4211476 ×6
Brick Special 1 x 2 with Grille Light Bluish Gray Part 2877 Element 4211383 ×2

Technic Bricks 12 pieces

Technic Brick 1 x 1 with Pin Hole Dark Bluish Gray Part 6541 Element 4210639 ×4
Technic Brick 1 x 2 [1 Pin Hole] Dark Bluish Gray Part 3700 Element 4211111 ×1
Technic Brick 1 x 2 [2 Pin Holes] Light Bluish Gray Part 32000 Element 4211541 ×2
Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Light Bluish Gray Part 32064b ×1
Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×4

Bricks Round and Cones 11 pieces

Cone 4 x 4 x 2 Hollow No Studs Black Part 4742 Element 4550922 or 4248076 ×1
Brick Round 1 x 1 Open Stud Light Bluish Gray Part 3062b Element 4211412 ×4
Brick Round 2 x 2 Dome Top, Blocked Open Stud, Bottom Axle Holder Orange Part 30367b Element 4216653 ×2
Cone 1 x 1 [Top Groove] Red Part 59900 Element 4529234 ×2
Brick Round 2 x 2 with Axle Hole Trans-Neon Orange Part 3941 Element 6273156 or 611647 ×2

Transportation - Land 9 pieces

Grille 1 x 2 x 2 2/3 Sloping with Chrome Outline Print Black Part 50946pr0001 Element 4246939 ×2
Mudguard 2 x 4 with Molded Headlights Dark Blue Part 44674 Element 6289312 or 6097585 ×2
Handlebars Metallic Silver Part 30031 Element 4579842 or 4246912 ×3
Wheel Arch, Curved Wedge 4 x 3 with 2 x 2 Opening and 4 Studs Orange Part 47755 Element 6063272 or 4500337 ×2

Transportation - Sea and Air 9 pieces

Cockpit 10 x 10 x 4 Octagonal Black Part 2618 Element 4550191 or 4106557 ×1
Tail Shuttle - Small Dark Blue Part 44661 Element 4527987 ×1
Technic Cylinder 4 x 4 with Pin Holes and Centre Bar, Closed Sides on Bar Dark Blue Part 41531 Element 6482974 or 6143407 ×2
Wing, Tail 4 x 1 x 3 Dark Blue Part 2340 Element 4529955 or 4224009 ×2
Jet Engine Fan with 10 Blades and Technic Pin Dark Bluish Gray Part 46667 Element 6313484 or 6100596 ×2
Engine Smooth Large [2 x 2 Thin Top Plate] Orange Part 4868b Element 4525190 ×1

Wheels and Tyres 8 pieces

Tyre 21 x 12 with Offset Tread Small Wide and Beveled Tread Edge Black Part 60700 Element 4514560 ×4
Wheel 11 x 12 with Hole Notched for Wheels Holder Pin Light Bluish Gray Part 6014b Element 4211764 ×4

Bars, Ladders and Fences 5 pieces

Lever Small Base with Black Lever Light Bluish Gray Part 298c02 Element 4221775 2 spares in the box ×3
Lever Small Base with Black Lever Red Part 298c02 Element 74335 1 spare in the box ×2

Bricks 5 pieces

Brick 2 x 2 Lime Part 3003 Element 4220632 or 4122451 ×3
Brick 1 x 2 Orange Part 3004 Element 4613981 or 4121739 ×1
Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×1

Hinges, Arms and Turntables 5 pieces

Hinge Brick 1 x 2 Base Black Part 3937 Element 393726 ×2
Hinge Tile 1 x 4 Locking Dual 1 Fingers on Top [4 Locking Ridges] Black Part 44822 Element 4193108 ×1
Hinge Brick 1 x 2 Top Plate Thin Light Bluish Gray Part 3938 Element 4211470 ×2

Technic Axles 5 pieces

Technic Axle 3 with Stud Dark Bluish Gray Part 6587 Element 6587199 or 6129590 ×2
Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×1
Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×2

Tiles Round and Curved 4 pieces

Tile Round 2 x 2 with Bottom Cross Black Part 4150 Element 415076 or 415026 ×4

Minifig Accessories 3 pieces

Equipment Camera Handheld with Right-Aligned Viewfinder Black Part 30089a ×1
Equipment Hose Nozzle / Gun with Side String Hole Simplified Black Part 60849 Element 6641462 or 4537551 ×2

String, Bands and Reels 3 pieces

String Cord Thin (0.5mm) 100cm Black Part 56823c100 Element 6179847 or 6123920 ×1
String Reel 2 x 2 Winch Holder Black Part 2584 Element 6465125 or 6163507 ×1
String Reel 2 x 2 Winch Drum Light Bluish Gray Part 2585 Element 4211370 ×1

Minifig Neckwear 2 pieces

Minifig Neckwear Bracket [One Stud] Dark Bluish Gray Part 42446 Element 4210469 ×2

Technic Beams Special 2 pieces

Technic Beam 3 x 0.5 Liftarm with Boss and Pin / Crank Black Part 33299a Element 4156980 ×2

Technic Connectors 2 pieces

Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top] Black Part 32530 Element 4144024 ×2

Windscreens and Fuselage 2 pieces

Windscreen 7 x 4 x 2 Round Trans-Brown Part 30384 Element 4262614 or 4129574 ×1
Windscreen 8 x 8 x 5 Dome with Dual 2 Fingers Trans-Clear Part 85962 Element 4548012 ×1

Electronics 1 piece

Light Brick 2 x 3 x 1 1/3 with Dark Bluish Gray Base [Red LED] Trans-Red Part 54869 Element 6577222 or 6555881 ×1

Energy Effects 1 piece

Wave / Flame Rounded Large with Marbled Trans-Orange Pattern Trans-Red Part 85959pat0001 Element 4548009 ×1

Minifig Shields, Weapons, & Tools 1 piece

Tool Grappling Hook Dark Bluish Gray Part 30192 Element 6270008 or 4211079 ×1

Stickers 1 piece

Sticker Sheet for Set 8970-1 [No Color/Any Color] Part 85956 Element 4546887 ×1

Technic Bushes 1 piece

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

Technic Gears 1 piece

Technic Gear 36 Tooth Double Bevel Black Part 32498 Element 4255563 or 4177434 ×1

Minifigures 6 figures

Agent Trace Minifigure, checked as a whole figure ×1
Agent Chase with Armor Minifigure, checked as a whole figure ×1
Sunset with Beach and Palm Trees Silhouette on Shirt, Tan Legs, Red Sunglasses Minifigure, checked as a whole figure ×1
Man, Floating Classic Spaceman on Shirt, Tan Legs Minifigure, checked as a whole figure ×1
Dr. Inferno with Metallic Silver Claw Minifigure, checked as a whole figure ×1
Female with Rainbow Stars on Tank Top and White Legs 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.