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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

3178 Seaplane

98 pieces in 57 part and color combinations, plus 1 minifigure.

The official piece count includes the 4 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

Dark Bluish Gray 23 pieces

  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Dark Bluish Gray Part 61409 Element 4540386 or 4521185 ×6
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 ×3
  • Plate 2 x 10 Dark Bluish Gray Part 3832 Element 4210678 ×1
  • Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 ×1
  • Plate 2 x 6 Dark Bluish Gray Part 3795 Element 4211002 ×1
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Dark Bluish Gray Part 2444 Element 4196768 ×6
  • Wedge Plate 3 x 2 Left Dark Bluish Gray Part 43723 Element 4210872 ×2
  • Wedge Plate 3 x 2 Right Dark Bluish Gray Part 43722 Element 4210869 ×2
  • Wedge Plate 3 x 4 with Stud Notches [Reinforced Underside] Dark Bluish Gray Part 90194 Element 6170522 or 4596895 ×1

Yellow 21 pieces

  • Brick Curved 10 x 1 [Asymmetric Inside Ridges] Yellow Part 85970 Element 4551620 ×2
  • Brick Curved Inverted 6 x 1 Yellow Part 42023 Element 6175158 or 4160408 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Yellow Part 3660 Element 366024 ×1
  • Brick Wedged, Sloped 4 x 4 Taper, with Stud Notches Yellow Part 93348 Element 4639696 ×1
  • Door 1 x 3 x 2 Left - Open Between Top and Bottom Hinge Yellow Part 92262 Element 4594669 ×1
  • Door 1 x 3 x 2 Right - Open Between Top and Bottom Hinge Yellow Part 92263 Element 4594664 ×1
  • Panel 1 x 4 x 1 with Rounded Corners [Thick Wall] Yellow Part 43337 Element 6078611 or 4239160 ×2
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×2
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×2
  • Tail Shuttle Yellow Part 6239 Element 6171817 or 4522129 ×1
  • Tile 1 x 2 with Groove Yellow Part 3069b Element 306924 ×2
  • Tile 1 x 8 with Groove Yellow Part 4162 Element 6388482 or 4189400 ×2
  • Wedge Plate 4 x 2 Left Yellow Part 41770 Element 4161331 ×1
  • Wedge Plate 4 x 2 Right Yellow Part 41769 Element 4160868 ×1

White 18 pieces

  • Brick Curved Inverted 6 x 1 White Part 42023 Element 4160403 ×4
  • Brick Round 2 x 2 with Axle Hole White Part 3941 Element 6601920 or 614351 ×1
  • Brick Wedged, Curved Triple 4 x 4 x 2/3, 2 Studs White Part 45677 Element 4193068 or 456771 ×1
  • Brick Wedged, Sloped Inverted 6 x 4 with 2 Stud Connections White Part 4856a ×2
  • Plate 1 x 8 White Part 3460 Element 6550141 or 346001 ×1
  • Plate 2 x 8 White Part 3034 Element 6552101 or 303401 ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) White Part 4032a Element 6601914 or 403201 ×2
  • Tile 1 x 4 with Groove White Part 2431 Element 6548255 or 243101 ×1
  • Wedge Plate 4 x 2 Left White Part 41770 Element 6552119 or 4161326 ×1
  • Wedge Plate 4 x 2 Right White Part 41769 Element 6552118 or 4160857 ×1
  • Wedge Plate 4 x 9 without Stud Notches White Part 2413 Element 241351 or 241301 ×2

Light Bluish Gray 14 pieces

  • Bar 1 x 12 with 1 x 2 Plate End with Solid Studs and 1 x 1 Round Plate End Light Bluish Gray Part 42445 Element 6277023 or 4211759 ×1
  • Brick Sloped 65° 2 x 2 x 2 with Bottom Tube Light Bluish Gray Part 3678b Element 4234535 or 4215353 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) Light Bluish Gray Part 3794b ×1
  • Plate Special 2 x 2 with Pin on Bottom Light Bluish Gray Part 2476a Element 6276848 or 4237084 ×2
  • Technic Pin Connector Hub Perpendicular 3L with 4 Pins Light Bluish Gray Part 48989 Element 4225033 ×1
  • Technic Pin Connector Round [Slotted] Light Bluish Gray Part 62462 Element 6173127 or 4526985 ×4
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×2
  • Tile 1 x 1 with White and Red Gauge Print Light Bluish Gray Part 3070bpr0007 Element 4255629 1 spare in the box ×1
  • Tile 1 x 2 with Red 82, Yellow and White Gauges Print Light Bluish Gray Part 3069bpr0101 Element 4227776 ×1

Black 10 pieces

  • Bag / Briefcase Black Part 4449 Element 6268856 or 4154853 ×1
  • Propeller 3 Blades 5 Diameter, Pin Hole Black Part 92842 Element 6360206 or 4599984 ×2
  • Tap 1 x 1 without Hole in Spout Black Part 4599b Element 459926 ×1
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×4
  • Window 1 x 2 x 2 Flat Front Black Part 60592 Element 6382697 or 4521439 ×2

Red 4 pieces

  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×1
  • Cone 2 x 2 x 2, Open Stud Red Part 3942c Element 6056297 or 6022147 ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Red Part 4032a Element 403221 ×1

Green 2 pieces

  • Plate 4 x 4 Green Part 3031 Element 4243821 or 4113158 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Green Part 4032a Element 403228 ×1

Trans-Green 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Green Part 6141 Element 6514057 or 6240221 1 spare in the box ×2

Trans-Red 2 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×2

Trans-Light Blue 1 piece

  • Windscreen 3 x 4 x 1 1/3 Large Glass Surface Trans-Light Blue Part 57783 Element 6507932 or 6247360 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 3178-1 [No Color/Any Color] Part 88663 Element 4569188 ×1

Minifigures 1 figure

  • Man, Dark Blue Plaid Shirt, Dark Blue Legs, Red Cap, Silver Sunglasses 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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