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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

9449 Ultra Sonic Raider

596 pieces in 185 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. 1 part in this set come in two colors that are easy to mix up; they are listed below.
The spare pieces. This set comes with 27 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.

Technic Brick 1 x 2 [1 Pin Hole] Black ×2 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.

Piece checklist

Technic Special 46 pieces

Technic Link Tread Wide with Two Pin Holes, Reinforced Dark Brown Part 88323 Element 6003879 ×46

Technic Axles 36 pieces

Technic Axle 12 Black Part 3708 Element 370826 ×1
Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×8
Technic Axle 6 Black Part 3706 Element 370626 ×1
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 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×6
Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×2
Technic Axle 9 Light Bluish Gray Part 60485 Element 4535768 ×1
Technic Axle 2 Notched Red Part 32062 Element 4142865 ×13

Minifig Shields, Weapons, & Tools 25 pieces

Weapon Lance Black Part 3849 Element 6345264 or 384926 ×2
Weapon Sword / Katana / Shamshir with Uncapped Pommel [Square Guard] Black Part 30173b ×2
Weapon Mace / Flail Spiked Flat Silver Part 93787 Element 4613938 ×1
Weapon Sword / Katana / Shamshir with Uncapped Pommel [Square Guard] Flat Silver Part 30173b Element 4569471 ×2
Weapon Lightsaber Hilt with Bottom Ring Light Bluish Gray Part 64567 Element 4581155 or 4539481 ×1
Weapon Sai Pearl Gold Part 98139 Element 6270135 or 4646866 ×14
Weapon Sword Katana with Dragon Guard (The Sword of Fire) Pearl Gold Part 93055 Element 6587954 or 6096099 1 spare in the box ×1
Weapon Throwing Star / Shuriken with Smooth Grips Pearl Gold Part 93058 Element 4600519 1 spare in the box ×2

Technic Beams 21 pieces

Technic Beam 1 x 13 Thick Black Part 41239 Element 4522933 or 4164422 ×4
Technic Beam 1 x 2 Thin Black Part 41677 Element 6338428 or 4167726 ×4
Technic Beam 1 x 3 Thick Black Part 32523 Element 4142822 or 3252326 ×2
Technic Beam 1 x 11 Thick Dark Bluish Gray Part 32525 Element 4603472 or 4534914 ×3
Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Dark Bluish Gray Part 60483 Element 6265093 or 6006141 ×2
Technic Beam 1 x 7 Thick Light Bluish Gray Part 32524 Element 4495930 or 4211665 ×2
Technic Beam 3 x 3 L-Shape with Quarter Ellipse Thin Light Bluish Gray Part 32249 Element 6590052 or 6336743 ×2
Technic Beam 1 x 5 Thick White Part 32316 Element 4249021 or 4140465 ×2

Bricks Round and Cones 20 pieces

Cone 1 x 1 [Top Groove] Black Part 59900 Element 4529236 ×2
Brick Round 1 x 1 Open Stud Dark Bluish Gray Part 3062b Element 4211090 ×6
Brick Round 2 x 2 with Axle Hole Dark Bluish Gray Part 3941 Element 4249139 ×1
Cone 2 x 2 x 2, Open Stud Dark Bluish Gray Part 3942c Element 6533790 or 6092666 ×3
Brick Round 2 x 2 Dome Top, Blocked Open Stud, Bottom Axle Holder Light Bluish Gray Part 30367b ×2
Cone 1 x 1 [Top Groove] Pearl Gold Part 59900 Element 4529247 ×2
Brick Round 2 x 2 Dome Top, Blocked Open Stud, Bottom Axle Holder Yellow Part 30367b Element 4185784 ×2
Brick Round 2 x 2 with Axle Hole Yellow Part 3941 Element 614324 or 394124 ×2

Tiles Round and Curved 19 pieces

Tile Round 1 x 1 Pearl Gold Part 98138 Element 6238891 or 4649422 1 spare in the box ×8
Tile Round 1 x 1 Trans-Clear Part 98138 Element 6514191 or 6274738 2 spares in the box ×6
Tile Round 1 x 1 Trans-Red Part 98138 Element 6514189 or 6258607 2 spares in the box ×3
Tile Round 1 x 1 with Fangpyre Print Trans-Red Part 98138pr0003 Element 4653402 1 spare in the box ×1
Tile Round 2 x 2 with Bottom Cross Yellow Part 4150 Element 415074 or 415024 ×1

Plates Special 18 pieces

Plate Special 1 x 4 with 2 Studs, 3 Bottom Tubes Dark Bluish Gray Part 92593 Element 4598769 ×2
Bracket 1 x 2 - 1 x 4 [Square Corners] Light Bluish Gray Part 2436 Element 4282740 or 4211358 ×2
Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] White Part 4081b Element 6281990 or 4632566 ×4
Plate Special 1 x 1 with Clip Vertical [Thick U Clip] White Part 4085c Element 408501 ×4
Plate Special 1 x 2 Side Handle [Free Ends] White Part 2540 Element 4140583 or 254051 ×4
Plate Special 1 x 2 with Door Rail Yellow Part 32028 Element 4141630 ×2

Technic Bricks 18 pieces

Technic Brick 1 x 10 [9 Pin Holes] Black Part 2730 Element 273026 ×1
Technic Brick 1 x 16 [15 Pin Holes] Black Part 3703 Element 370326 ×4
Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 Also in Dark Bluish Gray ×2
Technic Brick 5 x 5 Right Angle (1 x 4 - 1 x 4) Black Part 32555 Element 6170702 or 4529549 ×2
Technic Brick 1 x 2 [1 Pin Hole] Dark Bluish Gray Part 3700 Element 4211111 Also in Black ×1
Technic Slope Short (Wing Front) Dark Bluish Gray Part 2743 Element 4273814 ×2
Technic Brick 1 x 14 [13 Pin Holes] Light Bluish Gray Part 32018 Element 4211705 ×2
Technic Brick 1 x 2 [2 Pin Holes] Light Bluish Gray Part 32000 Element 4211541 ×2
Technic Brick 1 x 1 with Pin Hole Red Part 6541 Element 654121 ×2

Tiles 18 pieces

Tile 2 x 2 with Groove Dark Bluish Gray Part 3068b Element 4211055 ×2
Tile 1 x 2 with Stylised Computer Console Print Light Bluish Gray Part 3069bpr0086 Element 4212363 ×1
Tile 1 x 2 with Video Tape and Reels Print Light Bluish Gray Part 3069bpr0020 Element 4654046 or 4224701 ×1
Tile 1 x 8 with Groove Light Bluish Gray Part 4162 Element 4211481 ×4
Tile 2 x 4 with Groove Light Bluish Gray Part 87079 Element 4560183 ×5
Tile 1 x 6 with Groove White Part 6636 Element 6548296 or 663601 ×5

Technic Bushes 14 pieces

Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×4
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 3 spares in the box ×10

Hinges, Arms and Turntables 11 pieces

Hinge Cylinder 1 x 3 Locking with 1 Finger and Technic Friction Pin with Round Hole Black Part 41532 Element 4159335 ×2
Hinge Plate 1 x 2 Locking with 1 Finger on Side, with Groove Black Part 44567a Element 4185620 ×2
Hinge Plate 2 x 2 Locking with 1 Finger on Top Black Part 92582 Element 6265730 or 4613759 ×2
Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 9 Teeth Dark Bluish Gray Part 30553 Element 4210695 ×2
Hinge Plate 1 x 4 Locking Dual 1 Finger Light Bluish Gray Part 44568 Element 6276045 or 4211840 ×1
Hinge Plate 1 x 2 Locking with 2 Fingers on Side, 9 Teeth White Part 60471 Element 6615546 or 4515337 ×2

Animal / Creature Body Parts 10 pieces

Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Medium Flat Silver Part 87747 Element 4617190 ×1
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Medium Pearl Gold Part 87747 Element 4617082 or 4611904 ×9

Bars, Ladders and Fences 10 pieces

Bar 1 x 8 x 3 - 1 x 8 x 4 Curved Black Part 95229 Element 6360199 or 4620385 ×2
Bar 6L with Stop Ring Dark Bluish Gray Part 63965 Element 6170420 or 6081987 ×2
Bar 1L with Top Stud and Two Side Studs Pearl Gold Part 92690 Element 6328909 or 4640843 ×3
Bar 4L (Lightsaber Blade / Wand) Pearl Gold Part 30374 Element 6147169 or 4600267 ×1
Lever Small Base with Black Lever Red Part 298c02 Element 74335 1 spare in the box ×2

Tiles Special 9 pieces

Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 ×2
Tile Special 2 x 2 with Top Pin Light Bluish Gray Part 2460 Element 4211365 ×3
Tile Special 1 x 2 Grille with Bottom Groove Red Part 2412b Element 241221 ×1
Tile Special 1 x 2 with Handle Reddish Brown Part 2432 Element 4211219 ×2
Tile Special 1 x 2 Grille with Bottom Groove White Part 2412b Element 6601902 or 241201 ×1

Bricks 8 pieces

Brick 1 x 4 Black Part 3010 Element 301026 ×1
Brick 2 x 6 Black Part 2456 Element 4181144 or 245626 ×1
Brick 1 x 6 Dark Bluish Gray Part 3009 Element 4211100 ×3
Brick 2 x 4 Reddish Brown Part 3001 Element 4211201 ×1
Brick 2 x 2 x 3 White Part 30145 Element 4109791 ×1
Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×1

Bricks Curved 8 pieces

Brick Curved 3 x 1 No Studs Dark Bluish Gray Part 50950 Element 4246896 ×2
Brick Curved 2 x 3 Light Bluish Gray Part 6215 Element 4217918 ×2
Brick Arch 1 x 3 White Part 4490 Element 6619289 or 4520970 ×2
Brick Arch 1 x 6 x 3 1/3 Curved Top White Part 6060 Element 6185956 or 6077803 ×2

Bricks Special 8 pieces

Brick Special 1 x 1 Studs on 4 Sides Black Part 4733 Element 473326 ×2
Brick Special 1 x 2 with Grille Dark Bluish Gray Part 2877 Element 4210636 ×2
Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud] Light Bluish Gray Part 60475b Element 6345426 or 4533772 ×4

Wheels and Tyres 8 pieces

Tyre 94.2 x 22 Motorcycle Racing Tread, Narrow Black Part 88516 Element 6609953 or 6261718 ×2
Wheel 18mm x 14mm with Axle Hole, Fake Bolts and Shallow Spokes Black Part 55982 Element 4517737 ×2
Wheel 75 x 17 Motorcycle Dark Bluish Gray Part 88517 Element 4568006 ×2
Wheel 30 x 14 Light Bluish Gray Part 56904 Element 4541318 ×2

Bricks Wedged 7 pieces

Brick Wedged, Angled 3 x 2 Left Light Bluish Gray Part 6565 Element 6449622 or 4527767 ×1
Brick Wedged, Angled 3 x 2 Right Light Bluish Gray Part 6564 Element 4526932 or 4211559 ×1
Brick Wedged, Curved 16 x 4 Triple with Inner Ridges White Part 45301 Element 6192347 or 4503223 ×1
Brick Wedged, Curved 6 x 2 Left, Inner Ridges White Part 41748 Element 6552117 or 4160124 ×1
Brick Wedged, Curved 6 x 2 Right, Inner Ridges White Part 41747 Element 4160101 ×1
Brick Wedged, Curved Inverted 6 x 4 White Part 43713 Element 6580008 or 4261693 ×2

Transportation - Sea and Air 7 pieces

Propeller 1 Blade 2 x 16 with Axle Pearl Gold Part 98135 Element 6270129 or 6248488 ×6
Tail Shuttle - Small White Part 44661 Element 6253365 or 4288960 ×1

Technic Gears 6 pieces

Technic Tread Sprocket Wheel Small 6 Tooth Black Part 57520 Element 4662228 or 4544527 ×6

Panels 3 pieces

Panel 1 x 2 x 3 [Side Supports / Hollow Studs] Light Bluish Gray Part 87544 Element 4585429 ×1
Panel 1 x 2 x 1 [Square Corners] Trans-Brown Part 4865a Element 4200798 ×2

Energy Effects 2 pieces

Wave / Flame Rounded Large with Marbled Trans-Orange Pattern Trans-Red Part 85959pat0001 Element 4548009 ×2

Large Buildable Figures 2 pieces

Large Figure Weapon Ammo, Flexible Ammunition Belt Black Part 98567 Element 4652060 ×2

Minifig Accessories 2 pieces

Ring 4 x 4 with 2 x 2 Opening and 4 Arrow Ends (Ninjago Spinner Crown) Pearl Titanium Part 98341 Element 4647381 ×2

Minifig Upper Body 2 pieces

Arm Mechanical with Clip [Thick Support] Pearl Titanium Part 98313 Element 6276869 or 6008484 ×2

String, Bands and Reels 2 pieces

Chain 6L [5 Links] Pearl Gold Part 92338 Element 6323688 or 4600501 ×1
Rubber Belt Small [15mm ID] [Round Cross Section] White Part 85543 Element 6699001 or 4580665 ×1

Windscreens and Fuselage 2 pieces

Windscreen 8 x 4 x 2 Curved [2 Dual-Fingered Click Hinges] Trans-Brown Part 46413 Element 4199601 ×2

Stickers 1 piece

Sticker Sheet for Set 9449-1 [No Color/Any Color] Part 10781 Element 6006527 ×1

Tools 1 piece

Brick and Axle Separator v2.0 Orange Part 96874 Element 6240515 or 4654448 ×1

Minifigures 6 figures

Jay ZX with Shoulder Armour Minifigure, checked as a whole figure ×1
Spitta Minifigure, checked as a whole figure ×1
Kai ZX with Shoulder Armour Minifigure, checked as a whole figure ×1
Zane ZX with Shoulder Armour Minifigure, checked as a whole figure ×1
Cole ZX with Shoulder Armor Minifigure, checked as a whole figure ×1
Pythor P. Chumsworth (Purple) 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.