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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.

Grand Titan

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7701 Grand Titan

192 pieces in 86 part and color combinations, plus 1 minifigure.

The official piece count includes the 4 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

Technic Pins 24 pieces

  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×2
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×4
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×2
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×2
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 1 spare in the box ×4
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×4
  • Technic Rotation Joint Ball Loop with Two Perpendicular Pins with Friction Red Part 47455 Element 4298041 or 4220519 ×6

Plates 20 pieces

  • Plate 1 x 4 Black Part 3710 Element 371026 ×1
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate 2 x 2 Corner Black Part 2420 Element 242026 ×8
  • Plate 2 x 6 Black Part 3795 Element 379526 ×1
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×4
  • Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×2

Plates Special 17 pieces

  • Bracket 1 x 2 - 1 x 4 [Square Corners] Black Part 2436 Element 4282746 or 243626 ×4
  • Plate Special 1 x 2 [Side Handle Closed Ends] Black Part 48336 Element 4225201 ×1
  • Plate Special 3 x 2 with Rounded End, Hole Black Part 3176 Element 317676 or 317626 ×2
  • Bracket 1 x 2 - 2 x 2 Dark Bluish Gray Part 44728 Element 6117972 or 6048854 ×2
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Dark Bluish Gray Part 3839b Element 4263176 ×1
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Light Bluish Gray Part 3794a ×2
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] Red Part 2444 Element 244421 ×2
  • Technic Plate 2 x 4 [3 Holes] Red Part 3709 Element 370921 ×2
  • Technic Plate 2 x 8 [7 Holes] Red Part 3738 Element 373821 ×1

Bricks Curved 14 pieces

  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Black Part 6091 Element 6383142 or 6184784 ×2
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Red Part 6091 Element 6184782 or 609121 ×2
  • Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End Red Part 47457 Element 4220515 ×6
  • Brick Curved 6 x 1 Red Part 42022 Element 4160390 ×4

Bricks Round and Cones 14 pieces

  • Brick Round 1 x 1 with Fins, Open Stud Dark Bluish Gray Part 4588 Element 6331222 or 6321195 ×2
  • Cone 1 x 1 [No Top Groove] Light Bluish Gray Part 4589 Element 4518652 or 4211499 ×2
  • Brick Round 1 x 1 Open Stud Trans-Neon Green Part 3062b Element 6514237 or 6238675 ×6
  • Cone 1 x 1 [No Top Groove] Trans-Neon Green Part 4589 Element 618849 or 458949 ×4

Technic Bricks 13 pieces

  • Technic Brick 1 x 2 [2 Pin Holes] Black Part 32000 Element 3200026 ×7
  • Technic Brick 1 x 1 with Pin Hole Dark Bluish Gray Part 6541 Element 4210639 ×4
  • Technic Brick 1 x 2 [1 Pin Hole] Red Part 3700 Element 370021 ×2

Bricks Sloped 12 pieces

  • Brick Sloped 45° 2 x 1 Triple with Ovoid Bottom Pin Black Part 3048c Element 304826 ×1
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Black Part 3747b Element 4500458 or 374726 ×1
  • Brick Sloped 18° 4 x 2 Red Part 30363 Element 4129539 ×2
  • Brick Sloped 33° 3 x 2 Red Part 3298 Element 329821 ×2
  • Brick Sloped 45° 2 x 2 Red Part 3039 Element 303921 ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Clear Part 54200 Element 6245250 or 4244362 ×2

Technic Connectors 11 pieces

  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×2
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 ×4
  • Technic Axle and Pin Connector Perpendicular Double Split Black Part 41678 Element 4162857 ×2
  • Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top] Black Part 32530 Element 4144024 ×2
  • Technic Axle Connector Ridged [with x Hole x Orientation] Dark Bluish Gray Part 6538b Element 6538199 or 4210672 ×1

Hinges, Arms and Turntables 9 pieces

  • Hinge Brick 1 x 2 Locking with 2 Fingers Horizontal End, 9 Teeth Black Part 30540 Element 4144533 ×2
  • Hinge Cylinder 1 x 3 Locking with 1 Finger and Technic Friction Pin with Round Hole Black Part 41532 Element 4159335 ×3
  • Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends Dark Bluish Gray Part 30552 Element 4210694 ×1
  • Hinge Brick 1 x 2 Top Plate Thin Light Bluish Gray Part 3938 Element 4211470 ×1
  • Hinge Brick 1 x 2 Locking with 2 Fingers Vertical End, 9 Teeth Red Part 30365 Element 4173322 or 3036521 ×2

Technic Axles 8 pieces

  • Technic Axle 4 Black Part 3705 Element 370526 ×1
  • Technic Axle 6 Black Part 3706 Element 370626 ×1
  • Technic Axle 3 with Stud Dark Bluish Gray Part 6587 Element 6587199 or 6129590 ×2
  • Technic Axle 5.5 with Stop [Rounded Short End] Dark Bluish Gray Part 59426 Element 4508553 ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×3

Technic Beams 7 pieces

  • Technic Beam 1 x 2 Thin Black Part 41677 Element 6338428 or 4167726 ×3
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 ×2
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×2

Technic Special 7 pieces

  • Technic Brick Special 2 x 2 with Pin Hole, with 2 Rotation Joint Sockets Black Part 48172 Element 6296186 or 4275826 ×1
  • Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Ball Half [Horizontal Top] Dark Bluish Gray Part 48170 Element 6279898 or 4227395 ×2
  • Technic Brick Special 2 x 2 with Pin Hole, Rotation Joint Ball Half [Horizontal Top], Rotation Joint Socket Dark Bluish Gray Part 47452 Element 6021206 or 4636472 ×2
  • Technic Brick Special 2 x 3 with Pin Holes, Rotation Joint Ball Half [Vertical Side], Rotation Joint Socket Dark Bluish Gray Part 47432 Element 4235573 ×2

Bricks Wedged 6 pieces

  • Brick Wedged, Angled 4 x 2 Left Red Part 41768 Element 6449915 or 6093580 ×1
  • Brick Wedged, Angled 4 x 2 Right Red Part 41767 Element 6449914 or 6093579 ×1
  • Brick Wedged, Curved 6 x 4 Triple Red Part 43712 Element 6621800 or 6409628 ×2
  • Brick Wedged, Curved 8 x 3 x 2 Open Left Red Part 41750 Element 6681645 or 6471984 ×1
  • Brick Wedged, Curved 8 x 3 x 2 Open Right Red Part 41749 Element 6681342 or 6471983 ×1

Plates Round Curved and Dishes 6 pieces

  • Plate Round 1 x 1 with Solid Stud Light Bluish Gray Part 6141 Element 4211525 1 spare in the box ×6

Bricks 3 pieces

  • Brick 1 x 3 Dark Bluish Gray Part 3622 Element 4211104 ×2
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×1

Tiles Special 3 pieces

  • Tile Special 2 x 3 with 2 Clips [Angled Clips] Dark Bluish Gray Part 30350a ×1
  • Tile Special 1 x 1 with Clip and Straight Tips Red Part 2555 Element 255521 ×2

Bars, Ladders and Fences 2 pieces

  • Bar 4L (Lightsaber Blade / Wand) Black Part 30374 Element 6116604 or 4140303 ×2

Bricks Special 2 pieces

  • Brick Special 2 x 2 with 2 Pins and Axle Hole Light Bluish Gray Part 30000 Element 6356172 or 4211752 ×2

Electronics 2 pieces

  • Cable, Fiber Optics, Wide 20L / 16.0cm Trans-Clear Part 40002c20 Element 4284052 ×1
  • Light Brick 2 x 4 [Red LED] Trans-Clear Part 54605 Element 4283931 ×1

Large Buildable Figures 2 pieces

  • Large Figure Weapon Blade, Aero Slicer Red Part 47314 Element 4286382 ×2

Plates Wedged 2 pieces

  • Wedge Plate 3 x 6 Cut Corners Black Part 2419 Element 241926 ×2

Technic Bushes 2 pieces

  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×1
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×1

Tiles 2 pieces

  • Tile 1 x 6 with Groove Black Part 6636 Element 663626 ×2

Minifig Shields, Weapons, & Tools 1 piece

  • Tool Pipe Wrench / Adjustable Spanner Light Bluish Gray Part 4328 Element 4211612 ×1

Stickers 1 piece

  • Sticker Sheet for Set 7701-1 [No Color/Any Color] Part 54912 Element 4286402 ×1

Wheels and Tyres 1 piece

  • Wheel 30 x 13 Model Team Light Bluish Gray Part 2695 Element 4211643 ×1

Windscreens and Fuselage 1 piece

  • Windscreen 5 x 2 x 1 2/3 Trans-Brown Part 6070 Element 4204624 ×1

Minifigures 1 figure

  • Takeshi 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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