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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

41423 Tiger Hot Air Balloon Jungle Rescue

294 pieces in 138 part and color combinations, plus 2 minifigures.

The official piece count includes the 8 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. Compare each color with the step's parts callout, especially White against Trans-Clear.
The spare pieces. This set comes with 20 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

Plants & Trees 38 pieces

Plant, Flower, Plate Round 1 x 1 with 5 Petals Bright Green Part 24866 Element 6526150 or 6206150 1 spare in the box ×2
Plant, Leaves 6 x 5 Swordleaf with Clip [Thick Open O Clip] Bright Green Part 10884 Element 6347460 or 6299808 ×4
Plant, Plate 1 x 1 Round with 3 Leaves Bright Green Part 32607 Element 6182261 ×13
Plant, Flower, Plate Round 1 x 1 with 5 Petals Bright Light Orange Part 24866 Element 6209681 1 spare in the box ×2
Plant, Flower, Plate Round 1 x 1 with 5 Petals Bright Pink Part 24866 Element 6212501 1 spare in the box ×1
Plant, Flower, Plate Round 1 x 1 with 5 Petals Coral Part 24866 Element 6295242 1 spare in the box ×14
Plant, Flower, Plate Round 1 x 1 with 5 Petals Yellow Part 24866 Element 6299813 1 spare in the box ×2

Plates Round Curved and Dishes 15 pieces

Plate Round Half 3 x 6 with 1 x 2 Cutout Dark Azure Part 18646 Element 6097476 ×2
Plate Round 1 x 1 with Solid Stud Dark Bluish Gray Part 6141 Element 4210633 1 spare in the box ×1
Plate Round Half 4 x 8 Dark Pink Part 22888 Element 6134869 ×2
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Turquoise Part 4032a Element 6210400 ×2
Plate 8 x 8 with Rounded End Lime Part 41948 Element 6252480 ×1
Plate Round Half 3 x 6 with 1 x 2 Cutout Lime Part 18646 Element 6109765 ×3
Plate Round Half 4 x 8 Medium Azure Part 22888 Element 6138571 ×1
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Tan Part 4032a Element 4140562 or 403205 ×2
Dish 4 x 4 Inverted [Radar] White Part 3960 Element 396001 ×1

Tiles Round and Curved 14 pieces

Tile 1 x 1 Heart Coral Part 39739 Element 6488474 or 6284154 1 spare in the box ×2
Tile 4 x 4 Curved, Macaroni Dark Purple Part 27507 Element 6475586 or 6199904 ×4
Tile Round 1 x 1 Quarter Medium Azure Part 25269 Element 6603341 or 6150370 1 spare in the box ×2
Tile Round 1 x 1 Opal Trans-Light Blue Part 98138 Element 6514199 or 6299900 1 spare in the box ×5
Tile Round 1 x 1 with Tree Stump, Wood Log Print Reddish Brown Part 98138pr0048 Element 6285623 or 6139449 1 spare in the box ×1

Bricks Curved 13 pieces

Brick Arch 1 x 8 x 2 Raised Light Bluish Gray Part 16577 Element 6313653 or 6079722 ×1
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 2 x 2/3 Medium Azure Part 15068 Element 6119126 ×1
Brick Arch 1 x 6 x 2 - Thin Top without Reinforced Underside [New Version] Medium Nougat Part 15254 Element 6106193 or 6052788 ×2
Brick Curved 1 x 3 x 2 Inverted [Inside Bow] Medium Nougat Part 18653 Element 6189103 ×3
Brick Arch 1 x 6 Raised Arch Reddish Brown Part 92950 Element 4655611 ×3
Brick Curved 1 x 3 x 2 Inverted [Inside Bow] Reddish Brown Part 18653 Element 6133833 ×1
Brick Curved Inverted 4 x 1 Reddish Brown Part 13547 Element 6092566 ×1

Bricks Special 13 pieces

Brick Special 2 x 2 with Grooves and Axle Hole Dark Bluish Gray Part 90258 Element 6236949 or 4583879 ×1
Brick Special 1 x 1 with Stud on 1 Side Dark Orange Part 87087 Element 4666322 ×6
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side Light Bluish Gray Part 22885 Element 6123809 ×4
Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud] Medium Nougat Part 60475b Element 6360035 or 4569385 ×1
Bracket 5 x 2 x 1 1/3 with Holes, Pin Bottom White Part 11215 Element 6053026 ×1

Panels 12 pieces

Panel 1 x 6 x 5 Dark Bluish Gray Part 59349 Element 4505068 ×1
Panel 4 x 4 x 13 Curved Tapered with Clip at Each End Dark Purple Part 18969 Element 6331500 or 6302954 ×4
Panel 3 x 4 x 6 Curved Top Opal Trans-Light Blue Part 2571 Element 6510168 or 6488191 ×2
Panel 1 x 4 x 3 [Side Supports / Hollow Studs] Tan Part 60581 Element 6146877 ×1
Panel 4 x 4 x 13 Curved Tapered with Clip at Each End White Part 18969 Element 6331481 or 6096321 ×4

Technic Connectors 11 pieces

Large Figure Weapon Lightsaber Hilt with Axle Hole and Two Bar Holders Black Part 24122 Element 6280097 or 6155068 ×1
Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise Black Part 15100 Element 6073231 ×2
Technic Axle Connector Smooth [with x Hole + Orientation] Light Bluish Gray Part 59443 Element 4512360 ×3
Technic Axle Connector Smooth [with x Hole + Orientation] Reddish Brown Part 59443 Element 4531751 ×3
Technic Pin Connector Round [Slotted] Reddish Brown Part 62462 Element 6173132 or 6055781 ×2

Tiles 11 pieces

Tile 2 x 4 with Groove Bright Green Part 87079 Element 6282120 or 6173814 ×1
Tile 1 x 2 with Groove Medium Nougat Part 3069b Element 6021997 ×9
Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×1

Bars, Ladders and Fences 8 pieces

Bar 3L Light Bluish Gray Part 87994 Element 6093527 or 6064033 1 spare in the box ×2
Bar Holder with Hole and Bar Handle Light Bluish Gray Part 23443 Element 6343976 or 6152107 ×4
Bar 4L (Lightsaber Blade / Wand) White Part 30374 Element 6116602 or 4129836 ×2

Bricks Round and Cones 8 pieces

Brick Round Corner 4 x 4 Macaroni Wide with 3 Studs Dark Pink Part 48092 Element 6253753 ×4
Brick Round Corner 4 x 4 Macaroni Wide with 3 Studs Medium Nougat Part 48092 Element 6022004 ×4

Technic Pins 8 pieces

Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 1 spare in the box ×1
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×3
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Light Bluish Gray Part 32054 Element 4211865 ×1
Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×2
Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×1

Technic Axles 7 pieces

Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×1
Technic Axle 8 Black Part 3707 Element 370726 ×1
Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×1
Technic Axle 4 Red Part 3705 Element 6129995 or 4265797 ×1
Technic Axle 4 with Centre Stop Tan Part 99008 Element 4666999 ×1
Technic Axle 3 Yellow Part 4519 Element 6130007 ×2

Animal / Creature Body Parts 6 pieces

Animal Body Part / Plant, Tail / Trunk / Tentacle / Tongue / Vine / Tree Branch (Short Tip) Dark Brown Part 43892 Element 6171006 or 6109328 ×3
Animal Body Part / Plant, Tail / Neck / Branch / Trunk, Middle Section with Pin, Round Pin Hole Reddish Brown Part 40378 Element 6175223 or 4274318 ×2
Animal Body Part, Dog Bone [Short] White Part 93160 Element 6360202 or 4600294 1 spare in the box ×1

Animals / Creatures 6 pieces

Animal, Bird, Feet Joined, Bright Light Orange Beak, Magenta Body, Orange Eyes Print Magenta Part 35074pr0002 Element 6211857 ×1
Insect, Spider with Elongated Tail Section Medium Nougat Part 29111 Element 6234805 ×1
Animal, Big Cat Cub, Tiger with Bright Light Blue Eyes and Bright Pink Nose, Light Bluish Gray Markings Print White Part 14734pr0003 Element 6296649 ×2
Animal, Frog Yellow Part 33320 Element 6171104 or 4593780 ×1
Animal, Turtle, Baby with Olive Green Hearts Yellowish Green Part 49576pr0001 Element 6259896 ×1

Minifig Accessories 5 pieces

Equipment Radio [Extended Handle, Expanded Speaker Grille] Black Part 19220 Element 6170545 or 6100054 ×2
Equipment Medical Syringe with 2 Holes Bright Light Blue Part 53020 Element 6361949 or 6263455 1 spare in the box ×1
Equipment Baby Bottle with Handle Light Aqua Part 18855 Element 6412881 or 6102882 ×1
Equipment Binoculars Light Bluish Gray Part 30162 Element 4550170 or 4212313 ×1

Technic Bricks 5 pieces

Technic Brick 1 x 1 with Pin Hole Light Bluish Gray Part 6541 Element 4211535 ×1
Technic Brick 1 x 2 [1 Pin Hole] Reddish Brown Part 3700 Element 4211252 ×4

Minifig Upper Body 4 pieces

Arm Mechanical with Clip [Thick Support] White Part 98313 Element 6976864 or 6276864 ×4

Technic Beams 3 pieces

Technic Beam 1 x 7 Thick Medium Azure Part 32524 Element 6261638 or 6133891 ×3

Tiles Special 3 pieces

Tile Special 1 x 1 with Clip with Rounded Edges Dark Red Part 15712 Element 6360079 or 6071222 ×1
Tile Special 1 x 1 with Clip with Rounded Edges White Part 15712 Element 6348055 or 6054551 ×1
Tile Special 2 x 2 Inverted White Part 11203 Element 6564913 or 6013866 ×1

Bricks Wedged 1 piece

Brick Wedged, Angled 4 x 2 Left Dark Bluish Gray Part 41768 Element 4287973 or 4242124 ×1

Flags, Banners and Signs 1 piece

Flag 2 x 2 Square, Flat Clip Edge [Thick Clips] White Part 11055 Element 6011794 ×1

Hinges, Arms and Turntables 1 piece

Plate Special 6 x 8 Trap Door Frame Horizontal [Long Pin Holders] Dark Bluish Gray Part 92107 Element 4595708 ×1

Minifig Headwear 1 piece

Crown / Flower / Egg Shell Half White Part 39262 Element 6259700 ×1

Rock 1 piece

Rock 1 x 1 Jewel / Gem 24 Facet Trans-Clear Part 30153 Element 6513976 or 6247798 1 spare in the box ×1

Stickers 1 piece

Sticker Sheet for Set 41423-1 [No Color/Any Color] Part 67379 Element 6296573 ×1

String, Bands and Reels 1 piece

Chain 16L [21 Links] Dark Bluish Gray Part 60169 Element 6258887 or 4516456 ×1

Technic Bushes 1 piece

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

Technic Gears 1 piece

Technic Knob Wheel Black Part 32072 Element 6284188 or 4248204 ×1

Windows and Doors 1 piece

Window 1 x 4 x 3 without Shutter Tabs Tan Part 60594 Element 4578109 ×1

Minifigures 2 figures

Andrea - Tan Jacket, Tan Skirt, Dark Brown Hair Minifigure, checked as a whole figure ×1
Emma - Tan Overall, Black Hair 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.