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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

75917 Raptor Rampage

311 pieces in 138 part and color combinations, plus 3 minifigures.

The official piece count includes the 13 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 12 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 4 [3 Pin Holes] Black ×3 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.

Piece checklist

Bricks 31 pieces

Brick 1 x 10 Blue Part 6111 Element 6057905 or 4497172 ×2
Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×4
Brick 1 x 4 Blue Part 3010 Element 301023 ×4
Brick 2 x 2 Light Bluish Gray Part 3003 Element 4211387 ×2
Brick 1 x 2 without Bottom Tube Trans-Brown Part 3065 Element 6514267 or 6244909 ×4
Brick 1 x 10 White Part 6111 Element 6619291 or 611101 ×4
Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×6
Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×3
Brick 2 x 10 White Part 3006 Element 4617855 or 300601 ×2

Technic Pins 21 pieces

Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×14
Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×1
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×3
Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Dark Bluish Gray Part 11214 Element 6015356 ×2
Technic Pin 1/2 with 2L Bar Extension Light Bluish Gray Part 61184 Element 6347715 or 4520320 ×1

Tiles Round and Curved 13 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-Yellow Part 98138 Element 6514193 or 6274740 2 spares in the box ×5

Tiles Special 13 pieces

Tile Special 1 x 2 Grille with Bottom Groove Blue Part 2412b Element 241223 ×2
Tile Special 1 x 1 with Clip with Rounded Edges Dark Bluish Gray Part 15712 Element 6344022 or 6071226 ×4
Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 ×4
Tile Special 1 x 2 with Handle Dark Bluish Gray Part 2432 Element 4211039 ×2
Tile Special Round 2 x 2 with Hole Dark Bluish Gray Part 15535 Element 6055313 ×1

Wheels and Tyres 12 pieces

Tyre 21 x 6 City Motorcycle Black Part 50861 Element 6064174 or 4244953 ×2
Tyre 37 x 18 R Balloon Black Part 56891 Element 6589426 or 6518543 ×4
Wheel 18mm x 14mm with Axle Hole, Fake Bolts and Shallow Spokes Black Part 55982 Element 4517737 ×4
Wheel Centre 15 x 6 City Motorcycle with Stub Axles Light Bluish Gray Part 50862 Element 6410997 or 4590443 ×2

Technic Bricks 10 pieces

Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 Also in Dark Bluish Gray ×3
Technic Brick 1 x 4 [3 Pin Holes] Dark Bluish Gray Part 3701 Element 4213607 or 370127 Also in Black ×2
Technic Brick 4 x 4 with 2 x 2 Opening Light Bluish Gray Part 32324 Element 4211640 ×2
Technic Brick 6 x 8 with 4 x 6 Opening Light Bluish Gray Part 32532 Element 6421513 or 4211848 ×1
Technic Brick 1 x 1 with Pin Hole White Part 6541 Element 6609542 or 654101 ×2

Bricks Special 9 pieces

Brick Special 1 x 4 with Groove Black Part 2653 Element 265326 ×4
Brick Special 1 x 1 with Headlight Blue Part 4070 Element 407023 ×1
Brick Special 1 x 1 with Stud on 1 Side Dark Bluish Gray Part 87087 Element 4558955 ×1
Brick Special 1 x 1 with Stud on 1 Side White Part 87087 Element 6550190 or 4558952 ×2
Brick Special 1 x 4 with 4 Studs on One Side Yellow Part 30414 Element 4164073 or 3041424 ×1

Bricks Curved 8 pieces

Brick Arch 1 x 3 x 2 Curved Top Black Part 6005 Element 4618880 or 4188168 ×4
Brick Curved 2 x 2 x 2/3 Blue Part 15068 Element 6116786 ×1
Brick Curved 2 x 2 x 2/3 White Part 15068 Element 6552147 or 6047220 ×3

Plates Round Curved and Dishes 6 pieces

Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Bluish Gray Part 4032a Element 4211475 ×2
Plate Round 1 x 1 with Solid Stud Trans-Orange Part 6141 Element 6514059 or 6240227 1 spare in the box ×4

Technic Axles 6 pieces

Technic Axle 4 Black Part 3705 Element 370526 ×4
Technic Axle 2 Notched Red Part 32062 Element 4142865 ×2

Windows and Doors 6 pieces

Glass for Train Door Lip On Top and Bottom Trans-Brown Part 4183 Element 6040301 or 4195802 ×2
Door 1 x 3 x 1 Left White Part 3822 Element 4527637 or 4161547 ×1
Door 1 x 3 x 1 Right White Part 3821 Element 4537987 or 4527638 ×1
Door 1 x 4 x 5 Train Left White Part 4181 Element 6210107 or 6117843 ×1
Door 1 x 4 x 5 Train Right White Part 4182 Element 6117842 or 418201 ×1

Transportation - Land 5 pieces

Vehicle Base, Motorcycle Chassis, Long Fairing Mounts Black Part 50859b Element 4530673 or 4242385 ×1
Wheel Arch, Mudguard 2 x 4 Studded with Hole Blue Part 60212 Element 6331572 or 4600182 ×1
Fairing, Motorcycle, Vintage Dark Green Part 85983 Element 6228970 or 6117841 ×1
Handlebars Light Bluish Gray Part 30031 Element 4258308 ×1
Steering Stand 1 x 2 with Black Steering Wheel Yellow Part 3829c01 Element 9553 ×1

Bars, Ladders and Fences 4 pieces

Bar 1 x 4 x 2 Black Part 6187 Element 4141349 or 4121537 ×2
Bar 1 x 8 x 2 Black Part 2486 Element 6226740 or 6119243 ×1
Bar Holder with Clip Dark Bluish Gray Part 11090 Element 6336970 or 6015890 ×1

Panels 4 pieces

Panel 1 x 2 x 2 [Side Supports / Hollow Studs] Light Bluish Gray Part 87552 Element 4593679 ×2
Panel 1 x 2 x 3 [Side Supports / Hollow Studs] White Part 87544 Element 6550191 or 4585448 ×2

Technic Beams 4 pieces

Technic Beam 3 x 3 T-Shape Thick Dark Bluish Gray Part 60484 Element 4552349 or 4535773 ×4

Technic Bushes 4 pieces

Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×4

Technic Connectors 4 pieces

Technic Axle Connector Smooth [with x Hole + Orientation] Yellow Part 59443 Element 4519010 ×4

Projectiles / Launchers 3 pieces

Launcher, Brick Special 1 x 4 Spring Shooter with Light Bluish Gray Top Dark Bluish Gray Part 15400 Element 6324200 or 6048898 ×1
Projectile, Spring Shooter Ammunition 8L Bar Trans-Bright Green Part 15303 Element 6287551 or 6062599 ×2

Animal / Creature Accessories 2 pieces

Animal / Creature Accessory, Dinosaur, Raptor Bridle with Camera Black Part 21608 Element 6131939 or 6117357 ×2

Bricks Round and Cones 2 pieces

Brick Round 1 x 1 Open Stud Light Bluish Gray Part 3062b Element 4211412 ×1
Cone 1 x 1 [Top Groove] Trans-Bright Green Part 59900 Element 6514024 or 6337628 ×1

Bricks Sloped 2 pieces

Brick Sloped 75° 2 x 2 x 3 [Solid Studs] Dark Bluish Gray Part 98560 Element 6000853 ×2

Flags, Banners and Signs 2 pieces

Road Sign Clip-on 2 x 2 Square [Thick Open O Clip] Black Part 15210 Element 6323189 or 6063617 ×2

Minifig Shields, Weapons, & Tools 2 pieces

Weapon Dagger / Knife Dark Bluish Gray Part 37 Element 4219836 1 spare in the box ×1
Weapon Gun Automatic Pistol with Top Clip Dark Bluish Gray Part 15445 Element 6191976 or 6055607 ×1

Minifig Accessories 1 piece

Equipment Medical Syringe Lime Part 87989 Element 6086765 or 4654583 1 spare in the box ×1

Stickers 1 piece

Sticker Sheet for Set 75917-1 [No Color/Any Color] Part 21368 Element 6115940 or 6115939 ×1

Tools 1 piece

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

Transportation - Sea and Air 1 piece

Propeller 4 Blade 5 Diameter with Rounded Ends, Open Hub Black Part 2479 Element 247926 ×1

Windscreens and Fuselage 1 piece

Windscreen 2 x 6 x 2, Wide Top Trans-Brown Part 4176 Element 4176111 or 4173328 ×1

Minifigures 3 figures

Owen Grady with Reddish Brown Vest, and Dark Bluish Gray Legs with Holster Minifigure, checked as a whole figure ×1
Claire Dearing in White Outfit Minifigure, checked as a whole figure ×1
ACU Trooper with Sand Blue Armor and Dark Blue Cap 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.