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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.

Mickey's Fishing Adventure

Checking

4178 Mickey's Fishing Adventure

110 pieces in 60 part and color combinations.

LEGO counts 104 pieces. This inventory comes from a separate parts catalog and lists 110; the two do not always count the same elements, so their totals differ. 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 46 pieces

  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×2
  • Brick 2 x 4 Black Part 3001 Element 300126 ×2
  • Brick 1 x 4 Blue Part 3010 Element 301023 ×4
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×4
  • Brick 1 x 8 Blue Part 3008 Element 300823 ×6
  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×2
  • Brick 2 x 4 Blue Part 3001 Element 300173 or 300123 ×1
  • Brick 8 x 16 Green Part 4204 Element 4181116 or 420428 ×1
  • Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric Ridges Red Part 2454a ×2
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×2
  • Brick 2 x 2 x 3 Red Part 30145 Element 6138839 or 4107634 ×4
  • Brick 2 x 4 x 3 Red Part 30144 Element 4107563 ×1
  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×2
  • Brick 2 x 4 White Part 3001 Element 6552094 or 300101 ×2
  • Brick 8 x 8 White Part 4201 Element 4181128 or 4141527 ×1
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×2
  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×2
  • Brick 2 x 3 Yellow Part 3002 Element 300224 ×2
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×3
  • Brick 8 x 16 Yellow Part 4204 Element 4181115 or 420424 ×1

Belville, Scala and Fabuland 9 pieces

  • Fabuland, Tool Fuel Can / Jerrycan Blue Part 4440 Element 4141387 ×1
  • Fabuland, Roof Slope without Top Hole Green Part 4323 ×2
  • Belville / Scala, Bag / Case, Oval Red Part 6203 Element 4107435 ×1
  • Fabuland, Chair Red Part 4222 Element 4141372 ×2
  • Fabuland, Roof Support Slope 6 x 2 Red Part 787 ×2
  • Fabuland, Equipment Fishing Rod Yellow Part 4327 Element 4142083 ×1

Bars, Ladders and Fences 8 pieces

  • Bar 1 x 4 x 2 with Studs Blue Part 4083 Element 4280136 or 408323 ×1
  • Bar 1 x 4 x 2 with Studs Red Part 4083 Element 6001207 or 4550383 ×2
  • Bar 1 x 6 [Closed Studs] Red Part 6140 Element 4561802 or 4289557 ×1
  • Picket Fence 1 x 4 x 2 White Part 33303 Element 4141607 ×2
  • Plate Special 1 x 6 with Train Wagon End Fence Yellow Part 6583 Element 6271645 or 4251468 ×2

Wheels and Tyres 8 pieces

  • Tyre Offset Tread 24 x 8 Black Part 3483 Element 4501048 or 348326 ×4
  • Wheel Spoked 2 x 2 with Pin Hole Dark Gray Part 30155 Element 4113924 ×4

Plants & Trees 6 pieces

  • Plant, Flower 2 x 2 - Round [Open Stud] Blue Part 4728 Element 472823 ×1
  • Plant, Flower 2 x 2 Leaves - Angular Green Part 4727 Element 472728 ×3
  • Plant, Flower 2 x 2 - Round [Open Stud] White Part 4728 Element 6047840 or 472801 ×1
  • Plant, Flower 2 x 2 - Round [Open Stud] Yellow Part 4728 Element 472824 ×1

Transportation - Sea and Air 6 pieces

  • Propeller 3 Blade 5.5 Diameter with Hole for Technic Pin Black Part 4617b Element 4536184 or 461776 ×1
  • Boat / Ship Wheel / Helm Brown Part 4790 Element 479025 ×3
  • Wing, Tail 4 x 1 x 3 Red Part 2340 Element 6013636 or 4217653 ×2

Plates 4 pieces

  • Plate 2 x 4 Red Part 3020 Element 302021 ×2
  • Plate 4 x 10 Yellow Part 3030 Element 4200024 or 4142103 ×1
  • Plate 4 x 8 Yellow Part 3035 Element 303524 ×1

Bricks Curved 3 pieces

  • Brick Arch 1 x 4 x 2 Blue Part 6182 Element 4142235 or 618223 ×1
  • Brick Curved 1 x 4 x 2 Centre Stud Top with Yellow and Red Mickey Mouse Car Grill Print Blue Part 4088pr0005 Element 4141406 ×1
  • Brick Curved 1 x 4 x 2 Centre Stud Top Red Part 4088 Element 4141408 or 408821 ×1

Bricks Special 3 pieces

  • Brick Special 2 x 4 with Pins Light Gray Part 6249 Element 4143670 or 4107104 ×2
  • Brick Special 2 x 2 with Pin and Axle Hole Red Part 6232 Element 6347696 or 623221 ×1

Supports, Girders and Cranes 3 pieces

  • Brick Arch 2 x 6 x 5 Ornamented Red Part 2145 Element 4141343 ×1
  • Brick Arch 2 x 6 x 5 Ornamented White Part 2145 Element 4125489 or 214501 ×2

Technic Bricks 3 pieces

  • Technic Brick 1 x 4 [3 Pin Holes] Blue Part 3701 Element 370123 ×3

Animal / Creature Body Parts 2 pieces

  • Animal Body Part, Shark Body, without Bottom Tube White Part 2547 Element 4226367 or 4142284 ×1
  • Animal Body Part, Shark Head White Part 2548 Element 4226366 or 4142283 ×1

Containers 2 pieces

  • Box 4 x 4 x 2 Bottom with Semicircle Cut-out Ends Red Part 4461 Element 4141347 ×2

Minifig Accessories 2 pieces

  • Equipment Brush / Broom Earth Orange Part 4332 Element 4141376 ×1
  • Equipment Net [Fabuland Wind Gauge] Yellow Part 4433 Element 4141345 or 443324 ×1

Non-Buildable Figures (Duplo, Fabuland, etc) 2 pieces

  • Mickey Mouse Figure with Blue Overalls, Green Sleeves, Blue Cap Green Part 33254c01pr0001 Element 4141369 ×1
  • Minnie Mouse Figure with Red Dress, Yellow Sleeves, and Red Shoes Red Part 2661 Element 4144107 ×1

Windscreens and Fuselage 2 pieces

  • Windowscreen 1 x 4 x 5 Curved Top Red Part 4463 Element 4141378 ×2

Stickers 1 piece

  • Sticker Sheet for Set 4178-1 [No Color/Any Color] Part 23159 Element 4142234 ×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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