Free tool

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.

Hydro

Checking

41565 Hydro

70 pieces in 31 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

Black 23 pieces

  • Bar 1 x 3 [Clip / Anti-Stud] Black Part 4735 Element 4141580 or 473576 ×2
  • Bracket 1 x 2 - 1 x 2 Inverted Black Part 99780 Element 6020193 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×2
  • Brick Special 1 x 1 with Handle Black Part 2921 Element 6170566 or 292126 ×2
  • Plate 2 x 2 Black Part 3022 Element 302226 ×3
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Black Part 60478 Element 4515368 ×2
  • Plate Special 1 x 2, Top Clip [Split] Black Part 92280 Element 4598528 ×2
  • Plate Special 2 x 2 with Towball and Hole Black Part 15456 Element 6448318 or 6359224 ×2
  • Plate Special 2 x 2 with Wheel Holder Black Part 4488 Element 6092658 or 448826 ×2
  • Tyre 15 x 6 Offset Tread Small with Band around Center Black Part 87414 Element 4578677 ×2

White 15 pieces

  • Bar 1 x 4 x 3 [End Tabs] White Part 62113 Element 6426649 or 6099448 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) White Part 54200 Element 6550179 or 4504369 1 spare in the box ×2
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 1 spare in the box ×2
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] White Part 60470b Element 6347287 or 4556152 ×3
  • Technic Ball Joint with Black Eye Print White Part 32474pr1001 Element 6261631 or 6056225 ×2
  • Tile Round 2 x 2 with Scowling Nixel Face Print White Part 14769pr1001 Element 6060729 ×1
  • Tile Special 1 x 2 with Two Vertical Teeth / Tooth White Part 15209 Element 6046384 ×1
  • Wheel 8 x 6 White Part 4624 Element 462401 ×2

Red 11 pieces

  • Brick Curved 2 x 1 No Studs [1/2 Bow] Red Part 11477 Element 6029946 ×4
  • Plate 1 x 2 Red Part 3023 Element 302321 ×4
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Solid Anti-stud] Red Part 99206 Element 6061711 ×1
  • Wedge Plate 2 x 4 Red Part 51739 Element 6023770 ×2

Yellow 8 pieces

  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×3
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Yellow Part 4032a Element 403224 ×1
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Yellow Part 61252 Element 6347294 or 4540040 ×4

Light Bluish Gray 4 pieces

  • Bracket 1 x 2 - 1 x 2 Light Bluish Gray Part 99781 Element 4654582 ×2
  • Plate Special 1 x 2 5.9mm Centre Side Towball Socket Light Bluish Gray Part 14704 Element 6414561 or 6338165 ×2

Trans-Dark Blue 4 pieces

  • Tile Round 1 x 1 Trans-Dark Blue Part 98138 Element 6514190 or 6273627 1 spare in the box ×4

Trans-Light Blue 2 pieces

  • Wave / Flame Rounded with Base Rim Trans-Light Blue Part 6126b Element 6167739 ×2

Trans-Orange 2 pieces

  • Plate Special 1 x 1 with Tooth Trans-Orange Part 49668 Element 6514064 or 6237278 ×2

Dark Bluish Gray 1 piece

  • Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 ×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.