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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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70353 The Heligoyle

299 pieces in 128 part and color combinations, plus 3 minifigures.

The official piece count includes the 19 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. 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.

Arm Mechanical with Clip [Thick Support] Black ×1 Dark Bluish Gray ×6 Black is darker than Dark Bluish Gray.
Wedge Plate 3 x 6 Cut Corners Black ×2 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.

Piece checklist

Plates Round Curved and Dishes 27 pieces

Plate Round 4 x 4 with Pin Hole Black Part 60474 Element 4515350 ×4
Plate Round 1 x 1 with Solid Stud Blue Part 6141 Element 614123 ×1
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-Light Blue Part 6141 Element 6514058 or 6240225 ×18
Dish 2 x 2 Inverted [Radar] Yellow Part 4740 Element 4169960 or 4107622 ×2

Plates 25 pieces

Plate 1 x 6 Black Part 3666 Element 366626 ×2
Plate 2 x 2 Black Part 3022 Element 302226 ×5
Plate 2 x 4 Black Part 3020 Element 302026 ×3
Plate 2 x 6 Black Part 3795 Element 379526 ×1
Plate 1 x 10 Dark Bluish Gray Part 4477 Element 4257526 or 4210816 ×1
Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 ×7
Plate 1 x 2 Dark Purple Part 3023 Element 4655695 or 4589622 ×3
Plate 2 x 2 Corner Dark Purple Part 2420 Element 6167461 or 4225179 ×2
Plate 2 x 8 Dark Purple Part 3034 Element 6109931 ×1

Technic Pins 23 pieces

Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×8
Technic Rotation Joint Ball Loop with Two Perpendicular Pins with Friction Black Part 47455 Element 4272426 or 4213374 ×2
Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×4
Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 ×1
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×5
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Light Bluish Gray Part 32054 Element 4211865 ×3

Bricks Sloped 18 pieces

Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] Blue Part 15672 Element 6069163 ×2
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Bluish Gray Part 54200 Element 4504378 or 4244373 ×2
Brick Sloped 33° 3 x 1 Dark Bluish Gray Part 4286 Element 4211045 ×2
Brick Sloped 45° 2 x 1 with 2/3 Inverted Cutout and no stud Dark Bluish Gray Part 28192 Element 6168776 ×4
Brick Sloped Inverted 45° 2 x 1 Dark Bluish Gray Part 3665 Element 4211096 ×2
Brick Sloped 75° 2 x 2 x 3 Double Convex Dark Purple Part 3685 Element 6109972 ×2
Brick Sloped 45° 2 x 2 Light Bluish Gray Part 3039 Element 4211410 ×1
Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Light Bluish Gray Part 3747b Element 4211570 ×1
Brick Sloped 45° 1 x 1 x 2/3 Quadruple Convex [Pyramid] Trans-Light Blue Part 22388 Element 6581705 or 6313366 ×2

Bricks Wedged 18 pieces

Brick Wedged 2 x 2 Facet Dark Bluish Gray Part 87620 Element 4624186 ×14
Brick Wedged 3 x 3 Facet Dark Bluish Gray Part 2462 Element 4582257 ×2
Brick Wedged, Sloped 45° 4 x 2 Left Dark Bluish Gray Part 43721 Element 4298580 or 4210870 ×1
Brick Wedged, Sloped 45° 4 x 2 Right Dark Bluish Gray Part 43720 Element 4298583 or 4210871 ×1

Technic Beams 12 pieces

Technic Beam 1 x 11.5 Double Bent Thick Dark Bluish Gray Part 32009 Element 6271155 or 4210668 ×2
Technic Beam 3 x 5 L-Shape Thick Dark Bluish Gray Part 32526 Element 4210753 ×2
Technic Beam 1 x 7 Bent (4 - 4) Thick Light Bluish Gray Part 32348 Element 6278129 or 4211668 ×2
Technic Beam 1 x 3 Thick Medium Blue Part 32523 Element 6164393 ×2
Technic Beam 1 x 3 Thin Medium Blue Part 6632 Element 6164389 or 4172105 ×4

Animal / Creature Body Parts 11 pieces

Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Black Part 53451 Element 6270103 or 4568385 ×1
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Medium Dark Purple Part 87747 Element 6270093 or 6058227 ×6
Creature Body Part, Dragon Wing 8 x 10 [Plain] Dark Purple Part 55706 Element 6186040 ×4

Technic Connectors 10 pieces

Large Figure Weapon Lightsaber Hilt with Axle Hole and Two Bar Holders Black Part 24122 Element 6280097 or 6155068 ×2
Technic Axle Connector Smooth [with x Hole + Orientation] Black Part 59443 Element 6084612 or 4512363 ×2
Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×2
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Black Part 32184 Element 6276951 or 4121667 ×2
Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes] Black Part 87082 Element 4560174 ×2

Tiles Special 10 pieces

Tile Special 2 x 3 with 2 Clips [Thick Open O Clips] Black Part 30350b Element 4297713 ×1
Tile Special 1 x 1 with Clip with Rounded Edges Dark Bluish Gray Part 15712 Element 6344022 or 6071226 ×3
Tile Special 2 x 2 Inverted Medium Blue Part 11203 Element 6590058 or 6133855 ×1
Tile Special 2 x 3 Pentagonal with Nexo Power Shield Print - Yeti Sneeze Trans-Dark Blue Part 22385pr0092 Element 6190269 ×1
Tile Special 2 x 3 Pentagonal with Nexo Power Shield Print - Horrible Hunger Trans-Purple Part 22385pr0043 Element 6173101 ×1
Tile Special 1 x 2 with Two Vertical Teeth / Tooth White Part 15209 Element 6046384 ×3

Bricks Round and Cones 9 pieces

Brick Round 4 x 4 Centre Hole Dark Bluish Gray Part 87081 Element 4558959 ×2
Brick Round 2 x 2 Special with Spikes Dark Purple Part 27266 Element 6168591 ×1
Brick Round 2 x 2 Special with Spikes Medium Blue Part 27266 Element 6176828 ×3
Cone 1 x 1 [Top Groove] Trans-Neon Orange Part 59900 Element 6301326 or 6172239 ×1
Brick Round 2 x 2 with Axle Hole Yellow Part 3941 Element 614324 or 394124 ×2

Technic Axles 9 pieces

Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×4
Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×3
Technic Axle 6 Red Part 3706 Element 6130002 or 4191526 ×2

Bricks Curved 8 pieces

Brick Arch 1 x 3 x 2 Dark Bluish Gray Part 88292 Element 6186635 or 4568954 ×2
Brick Curved 2 x 2 x 2/3 Dark Purple Part 15068 Element 6182217 ×1
Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End Dark Purple Part 47457 Element 6109766 or 4579024 ×1
Brick Curved 2 x 1 No Studs [1/2 Bow] Medium Blue Part 11477 Element 6301857 or 6167825 ×4

Technic Special 8 pieces

Technic Brick Special 2 x 2 with Ball Socket Wide and Axle Hole Black Part 92013 Element 4619763 ×3
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 ×2
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] White Part 41669 Element 4173941 ×1

Minifig Shields, Weapons, & Tools 7 pieces

Weapon Scythe / Crescent Blade Serrated with Bar Black Part 98141 Element 6270143 or 6039203 ×1
Weapon Lightsaber Hilt with Bottom Ring Dark Blue Part 64567 Element 6133835 ×2
Weapon Halberd / Axe Dark Bluish Gray Part 3848 Element 4506846 ×1
Shield Pentagonal Flat Silver Part 22408 Element 6129534 ×1
Weapon Sword, Blade with Bar, Double Edge Flat Silver Part 23860 Element 6134587 ×2

Minifig Upper Body 7 pieces

Arm Mechanical with Clip [Thick Support] Black Part 98313 Element 6276867 or 6006739 Also in Dark Bluish Gray ×1
Arm Mechanical with Clip [Thick Support] Dark Bluish Gray Part 98313 Element 6276870 or 6012812 Also in Black ×6

Technic Bricks 6 pieces

Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 ×1
Technic Brick 1 x 8 [7 Pin Holes] Black Part 3702 Element 370226 ×2
Technic Pin Connector Block 1 x 5 x 3 Black Part 32333 Element 6271358 or 4141810 ×2
Technic Brick 1 x 6 [5 Pin Holes] Dark Bluish Gray Part 3894 Element 4210917 or 3894199 ×1

Energy Effects 5 pieces

Wave / Lightning Angular, Single Trans-Light Blue Part 27256 Element 6168590 ×5

Large Buildable Figures 5 pieces

Large Figure Skeletal, Limb with Ball Joint and Ball Socket, Short Black Part 90612 Element 4593557 ×1
Large Figure Weapon, Barrel with 2 Pin Holes and 3 Axle Holes Black Part 98585 Element 6186133 or 6156897 ×3
Large Figure Skeletal, Joint Extender [High Friction] Dark Bluish Gray Part 74261 Element 6314448 or 6106472 ×1

Technic Gears 5 pieces

Technic Driving Ring Extension, 4 Ridges Flat Silver Part 32187 Element 6123838 ×2
Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 ×2
Technic Gear 20 Tooth Bevel Tan Part 32198 Element 6031962 or 4514557 ×1

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 ×2

Bars, Ladders and Fences 3 pieces

Bar 6L with Stop Ring Dark Bluish Gray Part 63965 Element 6170420 or 6081987 ×2
Bar 1L with Top Stud and Two Side Studs Light Bluish Gray Part 92690 Element 4640844 or 4600518 ×1

Technic Beams Special 3 pieces

Technic Beam 1 x 2 with Ball Joint Angled Dark Bluish Gray Part 50923 Element 4503381 or 4289258 ×2
Technic Beam 1 x 3 with Ball Joint in Middle Dark Bluish Gray Part 98577 Element 6001085 ×1

Tiles Round and Curved 3 pieces

Tile Round 2 x 2 with Black Rock Teeth and Spots, Narrowed Yellow Eyes, Blue Electrified Evil Smile (Bouldron) Print Dark Purple Part 14769pr1080 Element 6188286 ×1
Tile Round 2 x 2 with Rock Creature Face with Jagged Grin, Dark Blue Spots and Yellow Eyes Print Sand Blue Part 14769pr1064 Element 6174488 ×1
Tile Round 1 x 1 White Part 98138 Element 6564903 or 6284572 ×1

Bricks Special 2 pieces

Brick Special 1 x 1 with Stud on 1 Side Dark Bluish Gray Part 87087 Element 4558955 ×2

Flags, Banners and Signs 2 pieces

Flag 2 x 2 Trapezoid with Flat Area between Clips Dark Blue Part 44676 Element 4529551 or 4261792 ×2

Hinges, Arms and Turntables 2 pieces

Hinge Plate 1 x 2 Locking with 2 Fingers on Side, 9 Teeth White Part 60471 Element 6615546 or 4515337 ×1
Hinge Plate 1 x 2 Locking with 1 Finger on Side, with Groove Yellow Part 44567a Element 4185617 ×1

Minifigs 2 pieces

Microfig [Plain] Dark Bluish Gray Part 85863 Element 6109516 or 4558466 ×2

Bricks 1 piece

Brick 1 x 8 Light Bluish Gray Part 3008 Element 4211392 ×1

Stickers 1 piece

Sticker Sheet for Set 70353-1 [No Color/Any Color] Part 33577 Element 6188470 ×1

Technic Bushes 1 piece

Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 ×1

Minifigures 3 figures

Shrunken Minifigure, checked as a whole figure ×1
Harpy Minifigure, checked as a whole figure ×1
Clay Moorington with Trans-Orange Visor and Silver 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

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.