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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.

Bi-Plane

Checking

7797 Bi-Plane

37 pieces in 18 part and color combinations.

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

Red 17 pieces

  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×1
  • Lever Small Base with Black Lever Red Part 298c02 Element 74335 ×2
  • Plate 1 x 2 Red Part 3023 Element 302321 ×3
  • Plate 1 x 3 Red Part 3623 Element 362321 ×3
  • Plate 2 x 6 Red Part 3795 Element 379521 ×4
  • Wedge Plate 4 x 2 Left Red Part 41770 Element 4161329 ×2
  • Wedge Plate 4 x 2 Right Red Part 41769 Element 4160866 ×2

White 9 pieces

  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) White Part 3794a ×3
  • Tail Shuttle - Small White Part 44661 Element 6253365 or 4288960 ×1
  • Tile 1 x 4 with Groove White Part 2431 Element 6548255 or 243101 ×4
  • Wedge Plate 2 x 4 White Part 51739 Element 6552128 or 4249506 ×1

Light Bluish Gray 5 pieces

  • Plate Round 1 x 1 with Solid Stud Light Bluish Gray Part 6141 Element 4211525 1 spare in the box ×4
  • Wheel Holder, Plate, Round 2 x 2 Thin with Clips Light Bluish Gray Part 2655 Element 6152344 or 4211373 ×1

Black 3 pieces

  • Plate Special 2 x 2 with Wheel Holder Black Part 4488 Element 6092658 or 448826 ×1
  • Propeller 3 Blade Small Black Part 2421 Element 6170693 or 4289255 ×1
  • Wheel Skateboard / Trolley Black Part 2496 Element 6223673 or 4569104 ×1

Dark Bluish Gray 2 pieces

  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Dark Bluish Gray Part 4081b Element 6281996 or 4632574 ×2

Trans-Clear 1 piece

  • Brick 1 x 2 without Bottom Tube Trans-Clear Part 3065 Element 6514262 or 6244904 ×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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