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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.

Windsurfer & Van

Checking

1791 Windsurfer & Van

65 pieces in 37 part and color combinations, plus 1 minifigure.

The piece count includes the 5 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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Plates 23 pieces

  • Plate 2 x 10 Black Part 3832 Element 383226 ×1
  • Plate 1 x 10 Blue Part 4477 Element 447723 ×2
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×3
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×1
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 1 x 3 Red Part 3623 Element 362321 ×2
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 ×2
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×2
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×4
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×2
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×1

Wheels and Tyres 8 pieces

  • Tyre 21 x 12 with Offset Tread Small Wide Black Part 6015 Element 601526 ×4
  • Wheel 11 x 12 with Hole Round for Wheels Holder Pin Yellow Part 6014a Element 601424 ×4

Panels 6 pieces

  • Panel 1 x 2 x 2 [Solid Studs] White Part 4864a Element 4113016 or 486401 ×4
  • Panel 1 x 2 x 2 with Palm Tree Print White Part 4864apr0006 ×2

Tiles 6 pieces

  • Tile 1 x 1 with Groove Red Part 3070b Element 307021 Also in Trans-Red ×2
  • Tile 1 x 1 with Groove Trans-Red Part 3070b Element 6581817 or 6254248 Also in Red ×2
  • Tile 1 x 1 with Groove Trans-Yellow Part 3070b Element 6636668 or 6088721 ×2

Hinges, Arms and Turntables 4 pieces

  • Hinge Vehicle Roof 4 x 4 White Part 4213 Element 4256454 or 421301 ×2
  • Hinge Vehicle Roof Holder 1 x 4 White Part 4315 Element 4214079 or 4190507 ×2

Plates Special 3 pieces

  • Plate Special 2 x 2 with Wheel Holders Black Part 4600 Element 460026 ×2
  • Bracket 1 x 2 - 1 x 4 [Square Corners] Blue Part 2436 Element 4282744 or 4189120 ×1

Tiles Special 3 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove White Part 2412b Element 6601902 or 241201 ×1
  • Tile Special 1 x 1 with Clip and Straight Tips Yellow Part 2555 Element 4164060 or 255524 ×2

Transportation - Land 3 pieces

  • Vehicle Base 4 x 5 with Wheel Arches, 2 x 2 Opening White Part 4211 Element 4289273 or 4239391 ×1
  • Wheel Arch, Mudguard 2 x 4 Studded White Part 3788 Element 4289272 ×1
  • Steering Stand 1 x 2 with Black Steering Wheel Yellow Part 3829c01 Element 9553 ×1

Transportation - Sea and Air 2 pieces

  • Sail, Triangular, 6 x 12 with Blue Lines and Red & Blue Triangle Print Trans-Clear Part 71637pr0006 Element 70748 ×1
  • Bar 12L with Open Stud, Towball, and Top Slit [Boat Mast] White Part 6076 Element 6345202 or 4258452 ×1

Windows and Doors 2 pieces

  • Door 1 x 3 x 1 Left White Part 3822 Element 4527637 or 4161547 ×1
  • Door 1 x 3 x 1 Right White Part 3821 Element 4537987 or 4527638 ×1

Bars, Ladders and Fences 1 piece

  • Bar 6.6L with Stop Ring [Umbrella Stand] White Part 4095 Element 4294998 or 409551 ×1

Bricks Sloped 1 piece

  • Brick Sloped 45° 2 x 4 White Part 3037 Element 6552102 or 303701 ×1

Minifig Accessories 1 piece

  • Sports Surfboard [Long] Red Part 6075 Element 6175655 ×1

String, Bands and Reels 1 piece

  • Rubber Band 15mm [Square Cross Section] Black Part 23229 Element 4141604 1 spare in the box ×1

Windscreens and Fuselage 1 piece

  • Windscreen 3 x 4 x 1 1/3 with 2 Studs on Top Trans-Light Blue Part 2437 Element 6507914 or 6253361 ×1

Minifigures 1 figure

  • Man, White Tank Top with Windsurfer, Yellow Legs, Brown Hair, Yellow Life Vest, Moustache 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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