BlockTalk Find Your Set

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.

MT-51 Claw-Tank Ambush

Checking

7697 MT-51 Claw-Tank Ambush

365 pieces in 132 part and color combinations, plus 3 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.

Show

Piece checklist

White 87 pieces

  • Brick 1 x 2 x 2 with Inside Axle Holder White Part 3245b ×1
  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×1
  • Brick 2 x 3 White Part 3002 Element 6550133 or 300251 ×2
  • Brick Arch 1 x 6 x 3 1/3 Curved Top White Part 6060 Element 6185956 or 6077803 ×2
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top White Part 6091 Element 6285777 or 609101 ×8
  • Brick Curved 2 x 2 with Lip, No Studs White Part 30602 Element 4195869 ×1
  • Brick Curved 6 x 1 White Part 42022 Element 4160387 ×2
  • Brick Sloped 33° 3 x 1 White Part 4286 Element 6632142 or 428601 ×4
  • Brick Sloped 75° 2 x 2 x 3 [Hollow Studs] White Part 3684 Element 4248055 or 4143976 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] White Part 3660 Element 366001 ×2
  • Brick Special 1 x 1 with Headlight White Part 4070 Element 6548267 or 407001 ×4
  • Brick Wedged, Curved 6 x 2 Left, Inner Ridges White Part 41748 Element 6552117 or 4160124 ×1
  • Brick Wedged, Curved 6 x 2 Right, Inner Ridges White Part 41747 Element 4160101 ×1
  • Brick Wedged, Curved 8 x 3 x 2 Open Left White Part 41750 Element 6312345 or 6038751 ×1
  • Brick Wedged, Curved 8 x 3 x 2 Open Right White Part 41749 Element 6312346 or 6038641 ×1
  • Cone 1 x 1 [No Top Groove] White Part 4589 Element 458901 ×7
  • Equipment Martian Hypersled with Pin (Mars Mission) White Part 58843 Element 4501924 ×2
  • Hinge Brick 1 x 2 Locking with 1 Finger Vertical End White Part 30364 Element 4256321 ×1
  • Plate 1 x 3 White Part 3623 Element 6552105 or 6550144 ×4
  • Plate 1 x 6 White Part 3666 Element 6552107 or 6548265 ×1
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×6
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×3
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×2
  • Technic Axle Connector 2 x 3 with Ball Socket, Open Sides White Part 32174 Element 4125555 ×1
  • Technic Beam 1 x 2 Thin White Part 41677 Element 6371416 or 4163533 ×4
  • Technic Brick 1 x 2 [1 Pin Hole] White Part 3700 Element 6619284 or 370001 ×7
  • Technic Brick 1 x 4 [3 Pin Holes] White Part 3701 Element 6601913 or 370101 ×2
  • Technic Steering Pulley Large White Part 3736 Element 4542733 or 4160689 ×2
  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] White Part 41669 Element 4173941 ×2
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×8
  • Tile 1 x 4 with Groove White Part 2431 Element 6548255 or 243101 ×1
  • Wedge Plate 4 x 2 Right White Part 41769 Element 6552118 or 4160857 ×1

Light Bluish Gray 79 pieces

  • Bar 1 x 3 [Clip / Anti-Stud] Light Bluish Gray Part 4735 Element 4211644 ×2
  • Bar 6.6L with Stop Ring [Umbrella Stand] Light Bluish Gray Part 4095 Element 4533908 or 4211887 ×2
  • Brick 2 x 2 x 3 Light Bluish Gray Part 30145 Element 4211650 ×2
  • Brick Curved 2 x 2 No Studs - 3 Recessed Side Ports Light Bluish Gray Part 44675 Element 4213383 ×2
  • Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth Light Bluish Gray Part 44302a Element 4211804 ×5
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Light Bluish Gray Part 73983 Element 6102769 or 4219256 ×4
  • Lever Small Base with Black Lever Light Bluish Gray Part 298c02 Element 4221775 1 spare in the box ×2
  • Plate 2 x 2 Corner Light Bluish Gray Part 2420 Element 4211353 ×2
  • Plate 2 x 8 Light Bluish Gray Part 3034 Element 4211406 ×2
  • Plate Round 1 x 1 with Solid Stud Light Bluish Gray Part 6141 Element 4211525 1 spare in the box ×8
  • Plate Special 2 x 2 with Grills Light Bluish Gray Part 41862 Element 4211748 ×2
  • Tap 1 x 1 with Hole in Spout Light Bluish Gray Part 4599a ×2
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×1
  • Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×2
  • Technic Axle and Pin Connector Angled #5 - 112.5° Light Bluish Gray Part 32015 Element 6271347 or 4211551 ×1
  • Technic Beam 1 x 3 Thick Light Bluish Gray Part 32523 Element 4211655 ×6
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×16
  • Technic Gear 8 Tooth Light Bluish Gray Part 3647 Element 4211432 or 3647194 1 spare in the box ×2
  • Technic Gear Rack 1 x 4 Light Bluish Gray Part 3743 Element 6457283 or 4211450 ×2
  • Technic Pin Long without Friction Ridges - Single Slot Light Bluish Gray Part 32556a Element 4211709 ×2
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Light Bluish Gray Part 2412b Element 4211350 ×5
  • Turntable 4 x 4 Locking Grooved Base Light Bluish Gray Part 30516 Element 4296249 ×1
  • Wheel 30.4 x 20 without Pinholes, with Reinforced Rim Light Bluish Gray Part 56145 Element 4297210 ×4

Black 78 pieces

  • Brick Curved 3 x 1 No Studs Black Part 50950 Element 4251161 ×2
  • Brick Round Corner 10 x 10 with Slope 33° Edge, Axle Hole, Facet Cutout Black Part 58846 Element 6454174 or 6015466 ×2
  • Brick Round Corner 4 x 4 Full Brick Black Part 2577 Element 6188426 or 6078094 ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 ×2
  • Brick Sloped 33° 3 x 1 Black Part 4286 Element 428626 ×2
  • Brick Wedged, Angled 3 x 2 Left Black Part 6565 Element 4527766 or 656526 ×1
  • Brick Wedged, Angled 3 x 2 Right Black Part 6564 Element 4526931 or 656426 ×1
  • Hinge Brick 1 x 2 Locking with 2 Fingers Horizontal End, 9 Teeth Black Part 30540 Element 4144533 ×2
  • Hinge Plate 1 x 2 Locking with 1 Finger On End, with Groove Black Part 44301a Element 4183043 ×4
  • Launcher 2 x 3 x 4 2/3, Disc Black Part 53990 Element 4295301 ×1
  • Plate 1 x 4 Black Part 3710 Element 371026 ×3
  • Plate 1 x 6 Black Part 3666 Element 366626 ×2
  • Plate 2 x 2 Black Part 3022 Element 302226 ×2
  • Plate 2 x 6 Black Part 3795 Element 379526 ×1
  • Plate 4 x 6 Black Part 3032 Element 303226 ×1
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Black Part 3794a ×2
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Black Part 3839b Element 383926 ×1
  • Technic Axle 6 Black Part 3706 Element 370626 ×2
  • Technic Axle Connector Double Flexible [Rubber] Black Part 45590 Element 4198367 ×2
  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×2
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black Part 42003 Element 6273708 or 4200326 ×1
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 ×2
  • Technic Brick 1 x 14 [13 Pin Holes] Black Part 32018 Element 4107558 ×4
  • Technic Brick 1 x 2 [2 Pin Holes] Black Part 32000 Element 3200026 ×2
  • Technic Brick 6 x 8 with 4 x 6 Opening Black Part 32532 Element 6448394 or 4188143 ×1
  • Technic Panel Fairing # 5 Small Short, Large Hole, Side A Black Part 32527 Element 4143417 ×1
  • Technic Panel Fairing # 6 Small Short, Large Hole, Side B Black Part 32528 Element 4143419 ×1
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×6
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 3 spares in the box ×12
  • Technic Rotation Joint Ball Loop with Two Perpendicular Pins with Friction Black Part 47455 Element 4272426 or 4213374 ×2
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×1
  • Tile Round 2 x 2 with Bottom Cross Black Part 4150 Element 415076 or 415026 ×2
  • Turntable 4 x 4 Top, Locking Black Part 30658 Element 4142915 ×1
  • Wedge Plate 3 x 2 Left Black Part 43723 Element 4180536 ×1
  • Wedge Plate 3 x 2 Right Black Part 43722 Element 4180508 ×1
  • Wedge Plate 3 x 6 Cut Corners Black Part 2419 Element 241926 ×1

Dark Bluish Gray 34 pieces

  • Bracket 1 x 2 - 2 x 2 Dark Bluish Gray Part 44728 Element 6117972 or 6048854 ×2
  • Brick Round 1 x 1 with Fins, Open Stud Dark Bluish Gray Part 4588 Element 6331222 or 6321195 ×3
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Dark Bluish Gray Part 3747b Element 4211064 ×1
  • Brick Special 1 x 1 with Studs on 2 Sides Dark Bluish Gray Part 47905 Element 4213574 ×2
  • Hinge Brick 1 x 2 Locking with 1 Finger Vertical End Dark Bluish Gray Part 30364 Element 4210723 ×2
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×3
  • Plate 2 x 12 Dark Bluish Gray Part 2445 Element 4211067 ×5
  • Technic Axle 3 with Stud Dark Bluish Gray Part 6587 Element 6587199 or 6129590 ×4
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Dark Bluish Gray Part 32064b ×1
  • Technic Brick Special 2 x 2 with Ball Socket and Axle Hole Dark Bluish Gray Part 57910 ×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 Socket Dark Bluish Gray Part 48169 Element 6278974 or 4225973 ×2
  • Technic Brick Special 2 x 2 with Solid Ball and Axle Hole Dark Bluish Gray Part 57909a ×2
  • Wedge Plate 4 x 2 Left Dark Bluish Gray Part 41770 Element 4210788 ×2
  • Wedge Plate 4 x 2 Right Dark Bluish Gray Part 41769 Element 4210782 ×2

Blue 18 pieces

  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×2
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×4
  • Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 2 spares in the box ×10
  • Tile 2 x 2 with Groove Blue Part 3068b Element 306823 ×2

Trans-Neon Green 18 pieces

  • Cone 1 x 1 [No Top Groove] Trans-Neon Green Part 4589 Element 618849 or 458949 ×6
  • Plate Round 1 x 1 with Solid Stud Trans-Neon Green Part 6141 Element 6240223 or 3005749 1 spare in the box ×4
  • Rock 1 x 1 Jewel / Gem 24 Facet Trans-Neon Green Part 30153 Element 6247790 or 4114505 ×7
  • Tile Special 1 x 2 Grille with Bottom Groove Trans-Neon Green Part 2412b Element 4272661 or 4109766 ×1

Orange 13 pieces

  • Brick 1 x 2 Orange Part 3004 Element 4613981 or 4121739 ×2
  • Plate 1 x 2 Orange Part 3023 Element 4177932 or 4163009 ×5
  • Technic Tread Large [36 Links] Orange Part 53992 Element 4504604 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Orange Part 2412b Element 4125254 or 3933106 ×2
  • Wheel Hard Plastic Large (54mm D. x 30mm) Orange Part 2515 Element 4504602 ×2

Trans-Dark Blue 11 pieces

  • Brick Round 1 x 1 Open Stud Trans-Dark Blue Part 3062b Element 6514233 or 6238044 ×5
  • Dish 2 x 2 Inverted [Radar] Trans-Dark Blue Part 4740 Element 6580383 or 6398233 ×6

Lime 8 pieces

  • Animal Body Part / Plant, Tail / Neck / Branch / Trunk, Middle Section with Pin, Round Pin Hole Lime Part 40378 Element 6290985 or 4650634 ×2
  • Projectile, Weapon Disc 2 x 2 with Marbled Yellow Pattern Lime Part 53993pat0001 Element 4494395 ×6

Trans-Orange 7 pieces

  • Cone 1 x 1 [No Top Groove] Trans-Orange Part 4589 Element 4221195 ×2
  • Cylinder 9 x 4 x 2 Tapered with Flat Bottom, Pin Holes Trans-Orange Part 58947 Element 4502233 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Orange Part 6141 Element 6514059 or 6240227 1 spare in the box ×2
  • Windscreen 10 x 6 x 3 Bubble Canopy Double Tapered Trans-Orange Part 50986 Element 4504310 ×1

Red 6 pieces

  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Red Part 53451 Element 6270107 or 4568388 1 spare in the box ×2
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×4

Reddish Brown 5 pieces

  • Plate 2 x 4 Reddish Brown Part 3020 Element 4211186 ×5

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 7697-1 [No Color/Any Color] Part 59625 Element 4506058 ×1

Minifigures 3 figures

  • Martian Minifigure, checked as a whole figure ×2
  • Mars Astronaut, Orange Sunglasses, Stubble 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.

We value your privacy

We use cookies 🍪 for analytics and to improve your experience. Read our privacy policy