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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.

The Swamp Adventure

Checking

21240 The Swamp Adventure

59 pieces in 36 part and color combinations, plus 2 minifigures.

The official piece count includes the 6 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.

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Piece checklist

Bricks 16 pieces

  • Brick 2 x 2 Dark Green Part 3003 Element 6214611 or 4271436 ×1
  • Brick 2 x 4 Dark Green Part 3001 Element 4260493 ×2
  • Brick 1 x 2 with Reddish Brown and Dark Brown Lines Print Medium Nougat Part 3004pr0014 Element 6097024 ×2
  • Brick 2 x 2 Reddish Brown Part 3003 Element 4211210 ×5
  • Brick 2 x 2 Corner Reddish Brown Part 2357 Element 4211200 ×2
  • Brick 2 x 4 Reddish Brown Part 3001 Element 4211201 ×2
  • Brick 1 x 2 with Black 'TNT' Pixelated Print White Part 3004pr0036 Element 6097028 ×2

Plates 15 pieces

  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×1
  • Plate 6 x 10 Blue Part 3033 Element 6339304 or 4541680 ×1
  • Plate 2 x 2 Corner Green Part 2420 Element 4157120 or 242028 ×4
  • Plate 4 x 4 Green Part 3031 Element 4243821 or 4113158 ×1
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×1
  • Plate 2 x 2 Reddish Brown Part 3022 Element 4613975 or 4216695 ×2
  • Plate 2 x 4 Reddish Brown Part 3020 Element 4211186 ×2
  • Plate 2 x 6 Reddish Brown Part 3795 Element 4211247 ×2
  • Plate 4 x 6 Reddish Brown Part 3032 Element 4271874 or 4211213 ×1

Plates Special 10 pieces

  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Bright Green Part 87580 Element 6389695 or 4565388 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Green Part 87580 Element 6186827 ×1
  • Plate Special 2 x 4 with Groove and Two Center Studs (Jumper) Dark Green Part 65509 Element 6383324 ×2
  • Plate Special 1 x 2 [Side Handle Closed Ends] Green Part 48336 Element 4521931 ×2
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Green Part 60470b Element 6347288 or 4556159 ×2
  • Plate Special Round 1 x 2 Half Circle with Stud (Jumper) Green Part 1745 Element 6510059 or 6424859 ×1
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Red Part 87580 Element 6126048 or 4581308 ×1

Plants & Trees 4 pieces

  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Bright Light Blue Part 24866 Element 6209683 1 spare in the box ×3
  • Plant, Flower Stem with Bottom Bar Green Part 24855 Element 6269971 or 6135278 1 spare in the box ×1

Tiles 3 pieces

  • Tile 1 x 1 with Groove Dark Green Part 3070b Element 6618080 or 6055171 1 spare in the box ×2
  • Tile 2 x 2 with Dark Brown Minecraft Grid Print (Crafting Table) Medium Nougat Part 3068bpr0236 Element 6097003 ×1

Tiles Round and Curved 3 pieces

  • Tile Round 1 x 1 Half Circle Green Part 24246 Element 6250600 or 6174154 1 spare in the box ×2
  • Tile Round 1 x 1 Trans-Bright Green Part 98138 Element 6514198 or 6274748 1 spare in the box ×1

Plates Round Curved and Dishes 2 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×2

Animals / Creatures 1 piece

  • Animal, Frog / Toad, Tan Stomach, Eyes Print Dark Orange Part 3128pr0001 Element 6423950 ×1

Minifig Heads 1 piece

  • Minifig Head Special, Cube with Slime, 3 Dark Green Squares Print Trans-Bright Green Part 19729pr2183 Element 6510306 or 6335370 ×1

Minifig Shields, Weapons, & Tools 1 piece

  • Weapon Axe Blocky Flat Silver Part 18788 Element 6089099 ×1

Technic Beams 1 piece

  • Technic Beam 1 x 5 Thick Red Part 32316 Element 4142132 or 4128589 ×1

Technic Bricks 1 piece

  • Technic Brick 1 x 1 with Pin Hole Reddish Brown Part 6541 Element 4620075 or 4528461 ×1

Technic Pins 1 piece

  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×1

Minifigures 2 figures

  • Alex Minifigure, checked as a whole figure ×1
  • Zombie 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.

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