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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.

Sea Plane with Hut and Boat

Checking

1817 Sea Plane with Hut and Boat

121 pieces in 71 part and color combinations, plus 3 minifigures.

The piece count includes the 14 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

White 38 pieces

  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×2
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×1
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×1
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin White Part 3747a Element 374701 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] White Part 3660 Element 366001 ×4
  • Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed White Part 4871 Element 4173943 or 487101 ×1
  • Brick Wedged, Sloped 4 x 4 Taper White Part 4858 Element 485801 ×2
  • Brick Wedged, Sloped Inverted 4 x 4 Triple [2 Connections between Front Studs] White Part 4855 Element 485501 ×2
  • Brick Wedged, Sloped Inverted 6 x 4 with 2 Stud Connections White Part 4856a ×2
  • Hinge Vehicle Roof Holder 1 x 4 White Part 4315 Element 4214079 or 4190507 ×1
  • Panel 1 x 2 x 1 [Square Corners] White Part 4865a Element 486501 ×4
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×2
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×1
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×1
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×1
  • Tail 4 x 2 x 2 White Part 3479 Element 4107515 or 361301 ×3
  • Tail Old White Part 3587 Element 358701 ×1
  • Tile 1 x 4 with Groove White Part 2431 Element 6548255 or 243101 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove White Part 2412b Element 6601902 or 241201 ×2
  • Wedge Plate 4 x 8 Tail White Part 3474 Element 4258359 or 347401 ×1
  • Wedge Plate 4 x 9 without Stud Notches White Part 2413 Element 241351 or 241301 ×2

Red 28 pieces

  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×1
  • Brick Wedged, Sloped Inverted 6 x 4 with 2 Stud Connections Red Part 4856a Element 6021529 or 485621 ×1
  • Door 1 x 4 x 5 with 4 Panes, Squared Base Red Part 3861b Element 386121 ×1
  • Equipment Cup / Mug [Plain] Red Part 3899 Element 389921 ×2
  • Equipment Oar / Paddle Red Part 2542 Element 4189099 or 4106939 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×4
  • Plate 1 x 4 Red Part 3710 Element 371021 ×2
  • Plate 1 x 6 Red Part 3666 Element 366621 ×2
  • Plate 2 x 4 Red Part 3020 Element 302021 ×4
  • Plate 2 x 8 Red Part 3034 Element 303421 ×1
  • Plate Round 1 x 1 with Solid Stud Red Part 6141 Element 614121 1 spare in the box ×3
  • Wedge Plate 3 x 4 without Stud Notches Red Part 4859 ×5
  • Window 1 x 2 x 2 Classic, Short Lip [with Glass] Red Part 3081c01 Element 7026 ×1

Light Gray 25 pieces

  • Brick 1 x 1 Light Gray Part 3005 Element 300502 ×4
  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×1
  • Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric Ridges Light Gray Part 2454a Element 245402 ×2
  • Brick 1 x 3 Light Gray Part 3622 Element 362202 ×5
  • Brick 2 x 2 Light Gray Part 3003 Element 4103591 or 300352 ×1
  • Brick 2 x 4 Light Gray Part 3001 Element 4116259 or 300102 ×1
  • Brick Sloped 45° 2 x 2 with Flight Control Print Light Gray Part 3039pr9969 Element 81871 ×1
  • Brick Special 1 x 2 with Grille Light Gray Part 2877 Element 287702 ×6
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×1
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Light Gray Part 4081b Element 408102 ×1
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Light Gray Part 2444 Element 244402 ×1
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×1

Black 14 pieces

  • Bag / Briefcase Black Part 4449 Element 6268856 or 4154853 ×1
  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×2
  • Brick Sloped 10° 6 x 8 Black Part 4515 Element 6440324 or 4161067 ×1
  • Brick Sloped Inverted 45° 2 x 1 Black Part 3665 Element 366526 ×1
  • Equipment Fishing Rod 12L, Horizontal Line Hole Black Part 2614a Element 4656122 or 4278796 ×1
  • Equipment Frying Pan Black Part 4528 Element 452826 ×1
  • Plate 1 x 8 Black Part 3460 Element 346026 ×1
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Black Part 3839b Element 383926 ×1
  • Propeller 3 Blade 5.5 Diameter with Hole for Technic Pin Black Part 4617b Element 4536184 or 461776 ×1
  • String Cord Thin (0.5mm) 30cm Black Part 56823c30 Element 9069 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×2
  • Weapon Axe Black Part 3835 Element 383526 ×1

Trans-Neon Orange 4 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Neon Orange Part 6141 Element 6240218 or 3005747 1 spare in the box ×4

Brown 3 pieces

  • Barrel 2 x 2 x 2 Brown Part 2489 Element 248925 ×1
  • Minifig Neckwear Backpack Non-Opening Brown Part 2524 Element 252425 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Brown Part 4032a Element 403225 ×1

Green 3 pieces

  • Plant, Pine Tree - Small 2 x 2 x 4 Green Part 2435 Element 6268823 or 243578 ×1
  • Plate 4 x 12 Green Part 3029 Element 4279059 or 302928 ×1
  • Plate 6 x 12 Green Part 3028 Element 6177783 or 4614769 ×1

Dark Gray 2 pieces

  • Dish 2 x 2 Inverted [Radar] Dark Gray Part 4740 Element 474027 ×1
  • Equipment Shovel [Rounded Handle End] Dark Gray Part 3837 Element 383727 ×1

Trans-Green 1 piece

  • Tile 1 x 1 with Groove Trans-Green Part 3070b Element 6581818 or 6254249 1 spare in the box ×1

Trans-Light Blue 1 piece

  • Windscreen 6 x 4 x 2 Canopy Trans-Light Blue Part 4474 Element 3006642 ×1

Trans-Red 1 piece

  • Tile 1 x 1 with Groove Trans-Red Part 3070b Element 6581817 or 6254248 1 spare in the box ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 1817-1 [No Color/Any Color] Part 71398 Element 4105242 ×1

Minifigures 3 figures

  • Man, Green Jacket, Black Legs, White Cap Minifigure, checked as a whole figure ×1
  • Man, Black Torso, Blue Legs, Blue Cap, Yellow Life Vest Minifigure, checked as a whole figure ×1
  • Man, Brown Jacket, Black Legs, Red Cap, Yellow Life Vest, 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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