BlockTalk Find Your Set

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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.

Seaplane

Checking

371-3 Seaplane

107 pieces in 39 part and color combinations, plus 2 minifigures.

The 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.

Show

Piece checklist

Bricks Sloped 50 pieces

  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×1
  • Brick Sloped 33° 3 x 2 Blue Part 3298 Element 6294307 or 6141996 ×1
  • Brick Sloped 45° 2 x 1 without Bottom Pin Blue Part 3040a ×4
  • Brick Sloped 45° 2 x 2 Blue Part 3039 Element 303923 ×3
  • Brick Sloped 45° 2 x 2 Double Concave Blue Part 3046a Element 6088710 or 4626370 ×4
  • Brick Sloped 45° 2 x 3 Blue Part 3038 Element 4580925 or 4112233 ×2
  • Brick Sloped 45° 2 x 4 Blue Part 3037 Element 4107437 or 303723 ×4
  • Brick Sloped Inverted 45° 2 x 1 Blue Part 3665 Element 366523 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Blue Part 3660 Element 366023 ×20
  • Brick Sloped 45° 2 x 1 without Bottom Pin Trans-Clear Part 3040a ×2
  • Brick Sloped 45° 2 x 4 Trans-Clear Part 3037 Element 303740 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] White Part 3660 Element 366001 ×6

Bricks 29 pieces

  • Brick 1 x 2 Black Part 3004 Element 300426 ×2
  • Brick 1 x 1 Blue Part 3005 Element 300523 ×6
  • Brick 1 x 2 Blue Part 3004 Element 4613959 or 300423 ×1
  • Brick 1 x 4 Blue Part 3010 Element 301023 ×4
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×2
  • Brick 2 x 2 without Inside Ridges Blue Part 3003a ×1
  • Brick 2 x 4 without Cross Supports Blue Part 3001a ×4
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×1
  • Brick 2 x 2 without Inside Ridges Red Part 3003a ×1
  • Brick 1 x 2 Trans-Clear Part 3004 Element 4256587 or 300410 ×2
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×1
  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×2
  • Brick 2 x 8 White Part 3007 Element 6619309 or 6033776 ×2

Plates 22 pieces

  • Plate 1 x 1 Blue Part 3024 Element 302423 ×2
  • Plate 1 x 8 Blue Part 3460 Element 346023 ×4
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×2
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×1
  • Plate 4 x 12 Blue Part 3029 Element 4528850 or 4166870 ×2
  • Plate 4 x 4 Blue Part 3031 Element 4243815 or 303123 ×2
  • Plate 4 x 8 Blue Part 3035 Element 303523 ×1
  • Plate 6 x 16 Blue Part 3027 Element 4611373 or 4107589 ×2
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×6

Bricks Round and Cones 2 pieces

  • Brick Round 1 x 1 Solid Stud Yellow Part 3062a ×2

Transportation - Sea and Air 2 pieces

  • Plate Special 2 x 2 with Helicopter Tail Rotor Holder Blue Part 3481 ×1
  • Propeller 4 Blade 5 Diameter with Hole for Rotor Holder Light Gray Part 3461 ×1

Windows and Doors 2 pieces

  • Door 1 x 3 x 3 Left with Window and Vertical Handle Blue Part 801 ×1
  • Door 1 x 3 x 3 Right with Window and Vertical Handle Blue Part 802 ×1

Minifigures 2 figures

  • LEGOLAND Red Torso, Red Legs, White Hat Minifigure, checked as a whole figure ×2

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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