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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.

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70675 Katana 4x4

441 pieces in 176 part and color combinations, plus 5 minifigures.

LEGO counts 450 pieces. This inventory comes from a separate parts catalog and lists 461, including the 20 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.

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. 2 parts in this set come in two colors that are easy to mix up; they are listed below.
The spare pieces. Many sets include a few extra small pieces. Check them before you order a replacement.
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 Special 1 x 2 [Side Handle Closed Ends] Black ×2 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black ×4 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.

Piece checklist

Technic Pins 50 pieces

Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×3
Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×8
Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×10
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×5
Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 ×6
Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 ×4
Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Red Part 11214 Element 6209519 ×2
Technic Pin Long without Friction Ridges Tan Part 32556 ×12

Bricks Curved 21 pieces

Brick Curved 2 x 1 No Studs [1/2 Bow] Bright Light Orange Part 11477 Element 6099728 ×2
Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] Bright Light Orange Part 11153 Element 6482364 or 6045944 ×2
Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End Light Bluish Gray Part 47457 Element 4494475 ×1
Brick Curved Inverted 2 x 2 x 2/3 Light Bluish Gray Part 32803 Element 6185676 ×2
Brick Curved 10 x 1 [Symmetric Inside Ridges] Red Part 13731 Element 6208565 or 6037665 ×2
Brick Curved 2 x 2 x 2/3 Red Part 15068 Element 6105976 ×2
Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] Red Part 11153 Element 6583512 or 6045937 ×6
Brick Curved Inverted 2 x 1 White Part 24201 Element 6601928 or 6172927 ×4

Technic Axles 21 pieces

Technic Axle 10 Black Part 3737 Element 373726 ×2
Technic Axle 6 Black Part 3706 Element 370626 ×2
Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×2
Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×2
Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×2
Technic Axle 2 Notched Red Part 32062 Element 4142865 ×8
Technic Axle 8 Red Part 3707 Element 6130004 ×1
Technic Axle 3 with Stop Reddish Brown Part 24316 Element 6135494 ×1
Technic Axle 5 with Stop Reddish Brown Part 15462 Element 6159763 ×1

Wheels and Tyres 20 pieces

Tyre 56 x 26 Balloon Black Part 55976 Element 6495636 or 4297209 ×4
Wheel 18 x 14 with Pin Hole, Fake Bolts and Shallow Spokes Black Part 55981 Element 6359824 or 6109682 ×2
Wheel 30.4 x 20 without Pinholes, with Reinforced Rim Black Part 56145 Element 4299389 or 4284946 ×2
Rim 30 mm with 4 Pin Holes Pearl Gold Part 41179 Element 6264181 ×8
Technic Wedge Belt Wheel [aka Pulley] Pearl Gold Part 4185 Element 6323675 or 6257902 ×4

Tiles Special 19 pieces

Tile Special 1 x 1 with Clip with Rounded Edges Black Part 15712 Element 6335388 or 6066102 ×6
Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] Black Part 99563 Element 6156991 ×2
Tile Special Round 1 x 1 with Hollow Bar Black Part 20482 Element 6186675 or 6167933 ×4
Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 ×2
Tile Special 1 x 1 with Clip with Rounded Edges Red Part 15712 Element 6348058 or 6072998 ×1
Tile Special 1 x 2 Grille with Bottom Groove Red Part 2412b Element 241221 ×2
Tile Special 2 x 2 Corner with Cut Corner - Facet Red Part 27263 Element 6217194 ×2

Plates Round Curved and Dishes 18 pieces

Plate Round 1 x 1 with Solid Stud Dark Bluish Gray Part 6141 Element 4210633 ×14
Plate Round 4 x 4 with Pin Hole Dark Tan Part 60474 Element 6232138 ×1
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Clear Part 2654 Element 6581772 or 6163901 ×2
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Orange Part 2654 Element 6513980 or 6171727 ×1

Bricks 13 pieces

Brick 1 x 4 Bright Light Orange Part 3010 Element 6003004 or 4490697 ×4
Brick 2 x 6 Dark Bluish Gray Part 2456 Element 4282819 or 4210875 ×1
Brick 1 x 4 Red Part 3010 Element 301021 ×4
Brick 1 x 6 Red Part 3009 Element 300921 ×2
Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×2

Technic Bushes 12 pieces

Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 ×10
Technic Bush Red Part 3713 Element 6271820 or 4227155 ×2

Plates Wedged 10 pieces

Wedge Plate 2 x 2 Left Black Part 24299 Element 6141554 ×2
Wedge Plate 2 x 2 Right Black Part 24307 Element 6141556 ×2
Wedge Plate 3 x 2 Left Bright Light Orange Part 43723 Element 6020145 ×1
Wedge Plate 3 x 2 Right Bright Light Orange Part 43722 Element 6020146 ×1
Wedge Plate 2 x 4 Red Part 51739 Element 6023770 ×2
Wedge Plate 3 x 2 Left Red Part 43723 Element 4372321 or 4180533 ×1
Wedge Plate 3 x 2 Right Red Part 43722 Element 4372221 or 4180504 ×1

Technic Bricks 9 pieces

Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Black Part 32064a Element 6178922 or 4233487 ×2
Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×4
Technic Brick 1 x 16 [15 Pin Holes] Dark Bluish Gray Part 3703 Element 4256828 ×2
Technic Brick 1 x 2 [2 Pin Holes] White Part 32000 Element 6564911 or 3200001 ×1

Bricks Round and Cones 8 pieces

Brick Round 2 x 2 Truncated Cone Black Part 98100 Element 4653822 ×2
Cone Reverse, Spinner, with Marbled Glitter Trans-Light Blue Pattern Pearl Titanium Part 50663pat0006 Element 6264119 ×1
Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style] Red Part 85080 Element 6078117 or 4567445 ×2
Brick Round 2 x 2 with Axle Hole Trans-Orange Part 3941 Element 6514283 or 6273154 ×1
Cone 1 x 1 [Top Groove] Trans-Orange Part 59900 Element 6514017 or 6172233 ×2

Panels 8 pieces

Panel 1 x 1 x 1 Corner Dark Bluish Gray Part 6231 Element 6025235 or 4519967 ×4
Panel 1 x 4 x 1 with Rounded Corners [Thin Wall] Dark Bluish Gray Part 15207 Element 6092649 ×2
Panel 1 x 2 x 1 [Rounded Corners] Trans-Clear Part 4865b Element 6514121 or 6246888 ×2

Technic Beams 8 pieces

Technic Beam 1 x 7 Bent (4 - 4) Thick Black Part 32348 Element 6278125 or 4128593 ×2
Technic Beam 1 x 9 Bent (6 - 4) Thick Dark Bluish Gray Part 6629 Element 6279883 or 4210638 ×2
Technic Beam 3 x 3 L-Shape Thin Dark Bluish Gray Part 32056 Element 6271814 or 4210659 ×4

Bricks Wedged 7 pieces

Brick Wedged, Curved 2 x 1 with Stud Notch Left Red Part 29120 Element 6177505 ×2
Brick Wedged, Curved 2 x 1 with Stud Notch Right Red Part 29119 Element 6177507 ×2
Brick Wedged, Curved 6 x 2 Left, Inner Ridges Red Part 41748 Element 6191993 or 4286467 ×1
Brick Wedged, Curved 6 x 2 Right, Inner Ridges Red Part 41747 Element 6268534 or 4286466 ×1
Brick Wedged, Curved Triple 4 x 6 x 2/3 with 4 Studs Red Part 52031 Element 4259903 ×1

Bars, Ladders and Fences 6 pieces

Bar 3L Black Part 87994 Element 6185316 or 6093525 ×1
Bar Holder with Hole and Bar Handle Black Part 23443 Element 6321194 or 6143318 ×1
Plate Special 1 x 6 with Train Wagon End Fence Dark Bluish Gray Part 6583 Element 6271647 or 6112207 ×1
Bar 1L with Top Stud and Two Side Studs Reddish Brown Part 92690 Element 6029774 ×2
Bar 4L (Lightsaber Blade / Wand) Reddish Brown Part 30374 Element 6116613 or 4262974 ×1

Bricks Sloped 6 pieces

Brick Sloped 45° 2 x 1 with Bottom Pin Light Bluish Gray Part 3040b Element 4211614 ×2
Brick Sloped Inverted 45° 2 x 1 Red Part 3665 Element 366521 ×2
Brick Sloped 30° 1 x 2 x 2/3 Tan Part 85984 Element 4624086 ×2

Tiles 6 pieces

Tile 2 x 4 with Groove Black Part 87079 Element 4560182 ×1
Tile 1 x 2 with Joystick and Vehicle Control Panel Print Dark Bluish Gray Part 3069bpr0090 Element 4221879 ×2
Tile 1 x 2 with Groove Red Part 3069b Element 4178178 or 306921 ×2
Tile 1 x 6 with Groove Tan Part 6636 Element 4157277 or 4108151 ×1

Flags, Banners and Signs 5 pieces

Flag 2 x 2 Square, Flat Clip Edge [Thick Clips] White Part 11055 Element 6011794 ×1
Flag 2 x 2 Trapezoid with Flat Area between Clips White Part 44676 Element 6023099 or 4507191 ×1
Banner, Brown Earth Print - Scroll of Forbidden Spinjitzu [No Color/Any Color] Part 55637a ×1
Banner, Light Blue Ice Print - Scroll of Forbidden Spinjitzu [No Color/Any Color] Part 55637b ×1
Banner, Orange Fire Print - Scroll of Forbidden Spinjitzu [No Color/Any Color] Part 55637c ×1

Projectiles / Launchers 5 pieces

Launcher, Brick Special 1 x 4 Spring Shooter with Light Bluish Gray Top Dark Bluish Gray Part 15400 Element 6324200 or 6048898 ×2
Projectile, Spring Shooter Ammunition 8L Bar Trans-Orange Part 15303 Element 6296380 or 6072635 ×3

Animals / Creatures 4 pieces

Animal, Snake Head with Open Mouth, Fangs and Curved Neck with Bar Dark Bluish Gray Part 28588 Element 6234583 ×4

Bricks Special 3 pieces

Brick Special 1 x 1 with Studs on 2 Sides Black Part 47905 Element 4214559 ×1
Brick Special 1 x 2 Palisade [aka Log] Dark Bluish Gray Part 30136 Element 4211095 ×1
Brick Special 1 x 4 with 4 Studs on One Side Light Bluish Gray Part 30414 Element 4211636 ×1

Large Buildable Figures 3 pieces

Large Figure Weapon, Barrel with 2 Pin Holes and 3 Axle Holes Black Part 98585 Element 6186133 or 6156897 ×2
Large Figure Weapon 6 Blade Ninja Star / Shuriken Pearl Gold Part 41125 Element 6421595 or 6259116 ×1

Transportation - Land 3 pieces

Steering Stand 1 x 2 with Black Steering Wheel Black Part 3829c01 Element 73081 ×1
Wheel Arch, Mudguard 3 x 4 with 2 x 2 Plate Red Part 28326 Element 6170382 ×2

Energy Effects 2 pieces

Wave / Flame Rounded Large with Marbled Trans-Yellow Pattern Trans-Red Part 85959pat0003 Element 6513987 or 6172283 ×2

Minifig Accessories 2 pieces

Equipment Shovel [Rounded Handle End] Dark Bluish Gray Part 3837 Element 4211006 ×1
Equipment Whip - Bent Reddish Brown Part 88704 Element 6359864 or 6080389 ×1

Minifig Upper Body 2 pieces

Arm Mechanical with 2 Clips [Battle Droid] Dark Bluish Gray Part 30377 Element 6319332 or 4210900 ×2

Technic Panels 2 pieces

Technic Panel Fairing #1 Small Smooth Short, Side A Black Part 87080 Element 4566251 ×1
Technic Panel Fairing #2 Small Smooth Short, Side B Black Part 87086 Element 4566249 ×1

Windscreens and Fuselage 2 pieces

Dish 6 x 6 Inverted - No Studs with Handle with Cockpit Window Print Trans-Clear Part 18675pr0017 Element 6268499 ×1
Windscreen 3 x 6 x 1 Curved with Rectangular Stud Holder in Bottom Trans-Clear Part 35299 Element 6507938 or 6246850 ×1

Stickers 1 piece

Sticker Sheet for Set 70675-1 [No Color/Any Color] Part 57926 Element 6268357 ×1

Technic Gears 1 piece

Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] Black Part 18575 Element 6346535 or 6093977 ×1

Tiles Round and Curved 1 piece

Tile Round 2 x 2 with Bottom Stud Holder Red Part 14769 Element 6066342 ×1

Minifigures 5 figures

Kai (Secrets of the Forbidden Spinjitzu) Minifigure, checked as a whole figure ×1
Pyro Slayer Minifigure, checked as a whole figure ×1
Char Minifigure, checked as a whole figure ×1
Pyro Whipper with Shoulder Armor Minifigure, checked as a whole figure ×1
Nya FS 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.