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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.

Seabed Strider

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7977 Seabed Strider

96 pieces in 41 part and color combinations, plus 2 minifigures.

The official piece count includes the 9 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

Plates Special 20 pieces

  • Bracket 1 x 2 - 1 x 4 [Square Corners] Black Part 2436 Element 4282746 or 243626 ×2
  • Bracket 1 x 2 - 2 x 2 Black Part 44728 Element 6117973 or 6048855 ×1
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Black Part 6019 Element 601976 or 601926 ×2
  • Plate Special 1 x 2, Top Clip [Split] Black Part 92280 Element 4598528 ×3
  • Plate Special 1 x 2 Side Handle [Free Ends] Dark Bluish Gray Part 2540 Element 4210660 ×3
  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) Dark Bluish Gray Part 3794b Element 4211119 ×3
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Light Bluish Gray Part 60478 Element 4515369 ×4
  • Plate Special 1 x 2 with Clip Horizontal on End Red Part 63868 Element 6346804 or 4534648 ×2

Plates 10 pieces

  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×2
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×2
  • Plate 2 x 4 Dark Tan Part 3020 Element 4497077 or 4267874 ×1
  • Plate 1 x 4 Red Part 3710 Element 371021 ×2
  • Plate 2 x 3 Red Part 3021 Element 302121 ×3

Bricks Sloped 9 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Bluish Gray Part 54200 Element 4504378 or 4244373 1 spare in the box ×5
  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Red Part 61409 Element 4540382 or 4535102 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Yellow Part 54200 Element 6245272 or 4260942 1 spare in the box ×2

Bricks Curved 8 pieces

  • Brick Curved 3 x 1 No Studs Red Part 50950 Element 4251162 ×8

Hinges, Arms and Turntables 8 pieces

  • Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth Black Part 44302a Element 4183060 ×4
  • Hinge Plate 1 x 2 Locking with 1 Finger On End, with Groove Yellow Part 44301a Element 4588025 or 4295303 ×4

Plates Round Curved and Dishes 8 pieces

  • Plate Round 1 x 1 with Solid Stud Yellow Part 6141 Element 614124 1 spare in the box ×8

Minifig Shields, Weapons, & Tools 4 pieces

  • Weapon Spear Gun with Rounded Trigger and Thin Spear Base Flat Silver Part 30088 Element 4613444 ×2
  • Weapon Trident Pearl Gold Part 92290 Element 6270116 or 4595077 ×1
  • Shield Round Flat with Circle, Triangle and Trident on Gold Background Print Sand Green Part 59231pr0003 Element 4614332 ×1

Bars, Ladders and Fences 2 pieces

  • Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip] Light Bluish Gray Part 48729b Element 6278156 or 4542590 1 spare in the box ×2

Bricks Round and Cones 2 pieces

  • Brick Round 2 x 2 [Grill] White Part 92947 Element 6615536 or 4650644 ×2

Bricks Special 2 pieces

  • Brick Special 1 x 4 with 4 Studs on One Side Red Part 30414 Element 4177991 or 4157223 ×2

Bricks Wedged 2 pieces

  • Brick Wedged, Curved 2 x 3 x 2/3 Two Studs, Wing End Red Part 47456 Element 6143425 or 4614777 ×2

Flags, Banners and Signs 2 pieces

  • Flag 2 x 2 Trapezoid with Flat Area between Clips Dark Bluish Gray Part 44676 Element 4215387 ×2

Minifig Accessories 2 pieces

  • Minifig Footwear Flipper [Thin] Yellow Part 59275 2 spares in the box ×2

Minifig Upper Body 2 pieces

  • Arm Mechanical with Clip [Thin Support] Black Part 53989 Element 4623154 or 4294996 ×2

Plates Wedged 2 pieces

  • Wedge Plate 4 x 2 Left Red Part 41770 Element 4161329 ×1
  • Wedge Plate 4 x 2 Right Red Part 41769 Element 4160866 ×1

Rock 2 pieces

  • Rock 1 x 1 Jewel / Gem 24 Facet Trans-Light Blue Part 30153 Element 6513972 or 6247792 ×1
  • Rock 1 x 1 Jewel / Gem 24 Facet Trans-Orange Part 30153 Element 4552237 ×1

Technic Bricks 2 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×2

Technic Pins 2 pieces

  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×2

Tiles Special 2 pieces

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

Transportation - Sea and Air 2 pieces

  • Propeller 3 Blade 3 Diameter with Axle Cross Flat Silver Part 6041 Element 4612828 ×2

Bricks 1 piece

  • Brick 2 x 2 White Part 3003 Element 6552095 or 6548256 ×1

Stickers 1 piece

  • Sticker Sheet for Set 7977-1 [No Color/Any Color] Part 94316 Element 4614219 ×1

Transportation - Land 1 piece

  • Handlebars Black Part 30031 Element 3003126 ×1

Minifigures 2 figures

  • Atlantis Hammerhead Warrior Minifigure, checked as a whole figure ×1
  • Axel 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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