Missing Piece Checker: 71707 Kai's Mech Jet

Checking

71707 Kai's Mech Jet

216 pieces in 96 part and color combinations, plus 2 minifigures.

LEGO counts 217 pieces. This inventory comes from a separate parts catalog and lists 226, including the 10 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. Compare each color with the step's parts callout, especially White against Trans-Clear.
The spare pieces. This set comes with 10 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.

Piece checklist

Plates 25 pieces

Plate 1 x 6 Black Part 3666 Element 366626 ×2
Plate 2 x 6 Black Part 3795 Element 379526 ×1
Plate 1 x 2 Coral Part 3023 Element 6258094 ×10
Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 ×1
Plate 2 x 10 Light Bluish Gray Part 3832 Element 4211462 ×1
Plate 1 x 4 Red Part 3710 Element 371021 ×3
Plate 2 x 4 Red Part 3020 Element 302021 ×5
Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×2

Plates Round Curved and Dishes 19 pieces

Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×1
Plate Special 1 x 2 Rounded with 2 Open Studs Dark Bluish Gray Part 35480 Element 6221607 ×5
Dish 2 x 2 Inverted [Radar] Trans-Clear Part 4740 Element 6514246 or 6245306 ×1
Plate Round 1 x 1 with Solid Stud Trans-Neon Green Part 6141 Element 6240223 or 3005749 1 spare in the box ×9
Plate Round 1 x 1 with Solid Stud Trans-Neon Orange Part 6141 Element 6240218 or 3005747 1 spare in the box ×1
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) White Part 4032a Element 6601914 or 403201 ×2

Minifig Shields, Weapons, & Tools 17 pieces

Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] Orange Part 21459 Element 6288114 1 spare in the box ×2
Weapon Dagger / Knife with Flat Hilt End and Curved Blade, Cross Hatched Grip Trans-Neon Green Part 37341b ×2
Weapon Scythe / Hook with Bar Trans-Neon Green Part 37341d ×2
Weapon Scythe / Hook with Double Blades Trans-Neon Green Part 37341e ×2
Weapon Sword Blade with Bar, Square Crossguard Trans-Neon Green Part 37341c ×2
Weapon Sword Curved Blade with Bar Trans-Neon Green Part 37341a ×2
Weapon Pike / Spear Tip with Bar Trans-Neon Orange Part 27257 Element 6365839 or 6290400 1 spare in the box ×2
Weapon Sword with Angular Wide Hilt and Angular Blade Trans-Neon Orange Pattern White Part 65272pat0002 Element 6287577 ×1
Weapon Sword / Katana / Shamshir with Capped Pommel [Square Guard] Yellowish Green Part 21459 Element 6288255 or 6116600 1 spare in the box ×2

Bricks Curved 14 pieces

Brick Curved Inverted 2 x 2 x 2/3 Black Part 32803 Element 6211476 ×3
Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End Light Bluish Gray Part 47457 Element 4494475 ×1
Brick Curved 2 x 1 No Studs [1/2 Bow] Red Part 11477 Element 6029946 ×6
Brick Curved Inverted 2 x 1 Red Part 24201 Element 6186398 ×2
Brick Curved 2 x 2 x 2/3 White Part 15068 Element 6552147 or 6047220 ×2

Plates Wedged 13 pieces

Wedge Plate 2 x 2 Cut Corner Dark Red Part 26601 Element 6210310 ×2
Wedge Plate 2 x 4 Red Part 51739 Element 6023770 ×2
Wedge Plate 4 x 2 Left Red Part 41770 Element 4161329 ×2
Wedge Plate 4 x 2 Right Red Part 41769 Element 4160866 ×2
Wedge Plate 4 x 6 Red Part 47407 Element 6275499 or 6167849 ×2
Wedge Plate 2 x 4 White Part 51739 Element 6552128 or 4249506 ×3

Bricks Wedged 11 pieces

Brick Wedged, Angled 3 x 2 Left Red Part 6565 Element 6256588 or 4527765 ×1
Brick Wedged, Angled 3 x 2 Right Red Part 6564 Element 6256585 or 4526929 ×1
Brick Wedged, Curved 2 x 3 x 2/3 Two Studs, Wing End Red Part 47456 Element 6143425 or 4614777 ×4
Brick Wedged, Curved 4 x 4 No Top Studs Red Part 47753 Element 6074878 ×2
Brick Wedged, Curved 2 x 3 x 2/3 Two Studs, Wing End White Part 47456 Element 4610897 ×2
Brick Wedged, Curved 4 x 3 No Studs [Plain] White Part 64225 Element 6632143 or 4567878 ×1

Tiles Special 11 pieces

Tile Special 1 x 1 with Clip with Rounded Edges Black Part 15712 Element 6335388 or 6066102 ×1
Tile Special 2 x 2 Inverted Black Part 11203 Element 6013867 ×2
Tile Special Round 2 x 2 with Hole Black Part 15535 Element 6143850 ×1
Tile Special 1 x 2 Grille with Bottom Groove Red Part 2412b Element 241221 ×2
Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] White Part 99563 Element 6601943 or 6210076 ×5

Technic Special 8 pieces

Technic Ball Joint with Through Axle Hole Black Part 53585 Element 4286267 1 spare in the box ×4
Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole Black Part 92013 Element 4619763 ×4

Bricks Sloped 6 pieces

Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Black Part 61409 Element 4541191 ×4
Brick Sloped 45° 2 x 1 with Bottom Pin Red Part 3040b Element 4121934 or 304021 ×2

Minifig Accessories 6 pieces

Game Controller / Weapon Hilt with Red Buttons Pattern Black Part 65080pat0002 Element 6285530 ×1
Sports Surfboard Standard Lime Part 90397 Element 6102906 ×1
Minifig Gameplayer Label Medium Azure with Ninja Head, Stripes Print Trans-Neon Green Part 65191pr0001 Element 6287600 ×1
Minifig Gameplayer Label with Black Skull, Black Stripes Print Trans-Neon Orange Part 65191pr0002 Element 6287611 ×1
Equipment Boomerang White Part 25892 Element 6211335 ×1
Game Controller / Weapon Hilt with Black Buttons Pattern White Part 65080pat0001 Element 6285528 ×1

Technic Axles 6 pieces

Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×3
Technic Axle 2 Notched Red Part 32062 Element 4142865 ×1
Technic Axle 3 with Stop Reddish Brown Part 24316 Element 6135494 ×2

Technic Bricks 6 pieces

Technic Brick 1 x 2 [2 Pin Holes] Black Part 32000 Element 3200026 ×2
Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin White Part 32064a Element 6548286 or 6178921 ×4

Large Buildable Figures 5 pieces

Large Figure Weapon Sword, Blade with Bar, Single Edge Trans-Neon Green Part 65184 Element 6287586 ×3
Large Figure Wing, Small White Part 61800 Element 6056830 or 6013544 ×2

Bricks Special 4 pieces

Bracket 5 x 2 x 1 1/3 with Holes, Pin Bottom Black Part 11215 Element 6039194 ×1
Brick Special 1 x 2 Palisade [aka Log] Dark Bluish Gray Part 30136 Element 4211095 ×3

Hinges, Arms and Turntables 4 pieces

Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Light Bluish Gray Part 73983 Element 6102769 or 4219256 ×4

Projectiles / Launchers 4 pieces

Launcher, Plate Special 1 x 2 with Mini Blaster Black Part 15403 Element 6102734 ×2
Launcher Trigger, Weapon Gun Trigger Dark Bluish Gray Part 15392 Element 6051334 1 spare in the box ×2

Technic Connectors 4 pieces

Technic Axle Connector Smooth [with x Hole + Orientation] Dark Bluish Gray Part 59443 Element 6084613 or 4516546 ×2
Technic Axle Connector Hub with 3 Axles at 120° Light Bluish Gray Part 57585 Element 4502595 ×2

Technic Pins 4 pieces

Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×2
Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×1
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Red Part 32054 Element 4140806 or 4125198 ×1

Bars, Ladders and Fences 2 pieces

Bar 4L (Lightsaber Blade / Wand) Trans-Neon Green Part 30374 Element 6507881 or 6170186 ×1
Bar 4L (Lightsaber Blade / Wand) Trans-Neon Orange Part 30374 Element 6288243 or 6120914 ×1

Bricks Round and Cones 2 pieces

Brick Round 1 x 1 Open Stud Trans-Clear Part 3062b Element 6514232 or 6223655 ×1
Brick Round 2 x 2 with Axle Hole Trans-Neon Orange Part 3941 Element 6273156 or 611647 ×1

Flags, Banners and Signs 2 pieces

Flag 2 x 2 Trapezoid with Flat Area between Clips White Part 44676 Element 6023099 or 4507191 ×2

Minifig Upper Body 2 pieces

Arm Mechanical with 2 Clips [Battle Droid] White Part 30377 Element 6321345 or 4260649 1 spare in the box ×2

Technic Beams 2 pieces

Technic Beam 1 x 2 Thin Red Part 41677 Element 6371442 or 4186678 ×2

Technic Bushes 2 pieces

Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×2

Stickers 1 piece

Sticker Sheet for Set 71707-1 [No Color/Any Color] Part 66646 Element 6289130 ×1

Minifigures 2 figures

Richie - Black Katana Holder Minifigure, checked as a whole figure ×1
Kai / Digi Kai with Shoulder Armor 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

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Keep a record

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LEGO Missing Piece Checker

71707 Kai's Mech Jet

Before you call it missing

Your missing list

Piece checklist