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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.

Boomer Bill Barrage Expansion Set

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71366 Boomer Bill Barrage Expansion Set

132 pieces in 70 part and color combinations.

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

Medium Nougat 21 pieces

  • Brick 1 x 2 Medium Nougat Part 3004 Element 4569382 ×14
  • Brick 2 x 4 Medium Nougat Part 3001 Element 6135191 or 4645064 ×1
  • Brick Round 1 x 1 Open Stud Medium Nougat Part 3062b Element 6300103 ×2
  • Plate 1 x 2 Medium Nougat Part 3023 Element 6218360 or 4645055 ×1
  • Plate 2 x 2 Corner Medium Nougat Part 2420 Element 6177535 ×1
  • Plate Round Corners 4 x 4 x 2/3 Circle with Reduced Knobs with Two Arrows in Circle and Barcode Print (Sticker) Medium Nougat Part 66792pr0033 Element 6317958 ×1
  • Tile Round Corners 4 x 4 x 2/3 with Two Circle Arrows and Barcode Print (Sticker) Medium Nougat Part 68869pr9999 Element 6323186 ×1

Red 20 pieces

  • Brick Curved 1 x 2 x 1 No Studs Red Part 37352 Element 6252037 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Red Part 11477 Element 6029946 ×3
  • Brick Special 1 x 1 with Stud on 1 Side Red Part 87087 Element 4558886 ×1
  • Brick Special Cube with 2 x 2 Studs on Top, and White Circles Print Red Part 66855pr0001 Element 6424436 or 6310501 ×1
  • Plate 1 x 1 Red Part 3024 Element 302421 1 spare in the box ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×3
  • Plate 2 x 2 Corner Red Part 2420 Element 242071 or 242021 ×1
  • Plate 2 x 3 Red Part 3021 Element 302121 ×2
  • Plate Round 4 x 4 with Pin Hole Red Part 60474 Element 4515348 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×2
  • Tile Round 1 x 1 Red Part 98138 Element 6284574 or 6063445 1 spare in the box ×1
  • Tile Round 2 x 2 with Shy Guy and Barcode Print (Sticker) Red Part 14769pr0032 Element 6566374 or 6317956 ×1

Black 18 pieces

  • Brick Round 4 x 4 Centre Hole Black Part 87081 Element 4558957 ×2
  • Cylinder Half 2 x 4 x 2 with 1 x 2 Cutout Black Part 24593 Element 6251544 ×4
  • Dome Hemisphere 4 x 4 with Bullet Bill Face Print Black Part 86500pr9999 Element 6309021 ×2
  • Hinge Brick 1 x 2 Base Black Part 3937 Element 393726 ×1
  • Plate Special 1 x 2 Rounded with 2 Open Studs Black Part 35480 Element 6210270 ×6
  • Plate Special 1 x 2 with Wheel Holder, Single Slit Black Part 21445 Element 6122656 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×1

Light Bluish Gray 12 pieces

  • Hinge Brick 2 x 2 Top Plate Thin Light Bluish Gray Part 6134 Element 4211881 ×1
  • Plate Round 4 x 4 with Pin Hole Light Bluish Gray Part 60474 Element 4515351 ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×1
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 1 spare in the box ×2
  • Tile Round 1 x 1 Light Bluish Gray Part 98138 Element 6284071 or 4650260 1 spare in the box ×4
  • Tile Round 2 x 2 with Bottom Stud Holder Light Bluish Gray Part 14769 Element 6052200 ×1
  • Turntable 4 x 4 Square Base, Locking Light Bluish Gray Part 61485 Element 6045718 or 4523670 ×2

Blue 11 pieces

  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×2
  • Brick Curved 2 x 2 x 2/3 Blue Part 15068 Element 6116786 ×2
  • Feet, 2 x 3 x 2/3 with 6 Studs on Top Blue Part 66859 Element 6549664 or 6294714 ×1
  • Plate 2 x 10 Blue Part 3832 Element 383223 ×3
  • Plate Round Corners 6 x 6 x 2/3 Circle with Reduced Knobs Blue Part 66789 Element 6301629 ×3

Dark Bluish Gray 9 pieces

  • Brick Arch 1 x 4 Dark Bluish Gray Part 3659 Element 4210999 ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Bluish Gray Part 4032a Element 4211042 ×1
  • Plate Special 4 x 4 Splat Gear, 10 Teeth Dark Bluish Gray Part 35443 Element 6252371 ×4
  • Technic Axle 5.5 with Stop [Rounded Short End] Dark Bluish Gray Part 59426 Element 4508553 ×1
  • Tile Special Round 2 x 2 with Hole Dark Bluish Gray Part 15535 Element 6055313 ×1

White 9 pieces

  • Brick Round 2 x 2 Dome Top, Hollow Stud White Part 30367c Element 4216652 or 4124120 ×2
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) White Part 15573 Element 6550152 or 6051511 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] White Part 59443 Element 6212049 ×2
  • Technic Plate 1 x 5 with Smooth Ends, 4 Studs and Centre Axle Hole White Part 32124 Element 6280386 or 4527839 ×2
  • Tile Round 2 x 2 with Mushroom and Barcode Print (Sticker) White Part 14769pr0059 Element 6428962 or 6316009 ×1
  • Tile Round 3 x 3 with Two Large Black Ovals and One Small Black Oval (Shy Guy Face) Print White Part 67095pr0006 Element 6482825 or 6407861 ×1

Reddish Brown 7 pieces

  • Antenna 1 x 4 with Flat Top Reddish Brown Part 3957b Element 4538252 ×1
  • Brick Arch 1 x 4 Reddish Brown Part 3659 Element 6177697 or 6088713 ×2
  • Brick Curved 4 x 1 Double, No Studs Reddish Brown Part 93273 Element 4658005 ×2
  • Plate 2 x 14 Reddish Brown Part 91988 Element 6004996 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Reddish Brown Part 4032a Element 4211159 ×1

Bright Green 5 pieces

  • Plate Round Corners 4 x 4 x 2/3 Circle with Reduced Knobs Bright Green Part 66792 Element 6308875 ×4
  • Plate Round Corners 6 x 6 x 2/3 Circle with Reduced Knobs Bright Green Part 66789 Element 6301631 ×1

Green 5 pieces

  • Plant, Plate 1 x 1 Round with 3 Leaves Green Part 32607 Element 6229130 ×2
  • Plate 2 x 2 Green Part 3022 Element 302228 ×1
  • Plate 2 x 4 Green Part 3020 Element 302028 ×2

Dark Brown 3 pieces

  • Plate 1 x 1 Dark Brown Part 3024 Element 6194729 or 6013830 1 spare in the box ×1
  • Plate 1 x 2 Dark Brown Part 3023 Element 6058221 or 6013831 ×2

Dark Orange 3 pieces

  • Brick Special 1 x 2 with Masonry Brick Profile Dark Orange Part 98283 Element 6314383 ×2
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Orange Part 87580 Element 6315197 ×1

Bright Light Orange 2 pieces

  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Bright Light Orange Part 24866 Element 6209681 1 spare in the box ×2

Lime 2 pieces

  • Brick Round 2 x 2 Dome Bottom [Open Stud] Lime Part 15395 Element 6214557 or 6104128 ×1
  • Brick Round 2 x 2 Dome Top, Hollow Stud Lime Part 30367c Element 4279734 ×1

Tan 2 pieces

  • Brick 2 x 2 with Thin Black Eyes Print Tan Part 3003pr0141 Element 6424435 or 6310502 ×1
  • Brick Special 1 x 1 x 1 2/3 with Studs on 1 Side Tan Part 32952 Element 6232135 ×1

Trans-Clear 2 pieces

  • Bar 1 x 12 with 1 x 2 Plate End with Solid Studs and 1 x 1 Round Plate End Trans-Clear Part 42445 Element 6276993 or 4169199 ×2

Pearl Gold 1 piece

  • Plate 1 x 1 Pearl Gold Part 3024 Element 6069887 1 spare in the box ×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.

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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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