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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.

Building Crane

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7905 Building Crane

709 pieces in 179 part and color combinations, plus 3 minifigures.

The official piece count includes the 12 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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Light Bluish Gray 155 pieces

  • Box 2 x 2 x 2 Door with Slot Light Bluish Gray Part 4346 Element 4211492 ×2
  • Box 2 x 2 x 2 [Hollow Studs] Light Bluish Gray Part 4345b Element 4211491 ×2
  • Bracket 1 x 2 - 2 x 2 Light Bluish Gray Part 44728 Element 6117967 or 6009014 ×3
  • Brick 1 x 1 x 5 with Blocked Open or Hollow Stud Light Bluish Gray Part 2453a ×8
  • Brick Sloped 45° 2 x 2 Light Bluish Gray Part 3039 Element 4211410 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Light Bluish Gray Part 3660 Element 4211436 ×1
  • Brick Sloped Inverted 45° 3 x 1 Double with 2 Completely Open Studs Light Bluish Gray Part 2341 Element 4251563 ×1
  • Brick Special 1 x 2 with 2 Pins, Round Pin Holes Light Bluish Gray Part 30526 Element 4211660 ×2
  • Brick Wedged 3 x 3 Facet Light Bluish Gray Part 2462 Element 4211718 ×4
  • Equipment Signal Paddle Light Bluish Gray Part 3900 Element 4211753 ×8
  • Ladder 14 x 2.5 Light Bluish Gray Part 4207 Element 4296335 ×4
  • Plate 1 x 2 Light Bluish Gray Part 3023 Element 4211398 or 3023194 ×1
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×5
  • Plate 1 x 6 Light Bluish Gray Part 3666 Element 4211438 ×8
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×4
  • Plate 2 x 8 Light Bluish Gray Part 3034 Element 4211406 ×1
  • Plate 6 x 10 Light Bluish Gray Part 3033 Element 4211405 ×2
  • Plate Round 1 x 1 with Solid Stud Light Bluish Gray Part 6141 Element 4211525 1 spare in the box ×1
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Light Bluish Gray Part 3794a ×14
  • Plate Special 3 x 2 with Rounded End, Hole Light Bluish Gray Part 3176 Element 4211419 ×2
  • Steering Wheel Small, 2 x 2 Light Bluish Gray Part 30663 Element 30663194 or 4211701 ×1
  • Tap 1 x 1 with Hole in Spout Light Bluish Gray Part 4599a ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×2
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×4
  • Technic Axle and Pin Connector Perpendicular Light Bluish Gray Part 6536 Element 6261375 or 4211775 ×4
  • Technic Axle and Pin Connector Perpendicular Double Split Light Bluish Gray Part 41678 Element 4211889 ×4
  • Technic Axle and Pin Connector Toggle Joint Smooth Light Bluish Gray Part 32126 Element 4211575 ×2
  • Technic Beam 1 x 5 Thick Light Bluish Gray Part 32316 Element 4211651 ×1
  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin / Crank Light Bluish Gray Part 33299a Element 4211688 ×1
  • Technic Beam 3 x 5 L-Shape Thick Light Bluish Gray Part 32526 Element 4211713 ×4
  • Technic Brick 1 x 14 [13 Pin Holes] Light Bluish Gray Part 32018 Element 4211705 ×10
  • Technic Brick 6 x 8 with 4 x 6 Opening Light Bluish Gray Part 32532 Element 6421513 or 4211848 ×2
  • Technic Gear 8 Tooth Light Bluish Gray Part 3647 Element 4211432 or 3647194 1 spare in the box ×2
  • Technic Link 1 x 16 Light Bluish Gray Part 2637 Element 4211556 ×12
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 1 spare in the box ×4
  • Technic Pin Connector Block 1 x 5 x 3 Light Bluish Gray Part 32333 Element 6271360 or 4205761 ×4
  • Technic Pin Connector Hub Perpendicular 3L with 4 Pins Light Bluish Gray Part 48989 Element 4225033 ×1
  • Technic Pin Long without Friction Ridges - Single Slot Light Bluish Gray Part 32556a Element 4211709 ×3
  • Technic Spike Connector Pin Double 3L Light Bluish Gray Part 45575 Element 4224139 ×1
  • Technic Turntable Large Type 1 Top, 56 Tooth Light Bluish Gray Part 2855 Element 4492747 or 4211381 ×1
  • Tile 1 x 6 with Groove Light Bluish Gray Part 6636 Element 4211549 ×7
  • Tile Special 1 x 2 with Handle Light Bluish Gray Part 2432 Element 4211357 ×4
  • Wedge Plate 6 x 6 Cut Corner Light Bluish Gray Part 6106 Element 4211520 ×4
  • Wheel 11 x 8 with Center Groove Light Bluish Gray Part 42610 Element 4211758 ×2

Yellow 152 pieces

  • Bar 1 x 8 x 2 Yellow Part 2486 Element 4189225 or 4106812 ×2
  • Bar 4L (Lightsaber Blade / Wand) Yellow Part 30374 Element 6116606 or 4193511 ×1
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×2
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×1
  • Brick 2 x 6 Yellow Part 2456 Element 4181143 or 245624 ×4
  • Brick Sloped 33° 3 x 1 Yellow Part 4286 Element 428624 ×6
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Yellow Part 3747a ×2
  • Brick Sloped Inverted 34° 3 x 1 with Internal Stopper Yellow Part 4287b ×2
  • Brick Special 1 x 1 with Handle Yellow Part 2921 Element 6584236 or 4262786 ×2
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Yellow Part 73983 Element 6102768 or 4205196 ×2
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×4
  • Plate 2 x 3 Yellow Part 3021 Element 302124 ×9
  • Plate Special 1 x 6 with Train Wagon End Fence Yellow Part 6583 Element 6271645 or 4251468 ×4
  • Road Sign Clip-on 2.2 x 2.667 Triangular Yellow Part 30259 Element 4655574 or 4297079 ×2
  • Support 2 x 2 x 10 Girder Triangular Vertical - Type 3 - Axle Hole, 3 Posts Yellow Part 58827 Element 4509667 or 4503101 ×16
  • Support 2 x 4 x 5 Stanchion Inclined [5mm wide posts] Yellow Part 4476b Element 4297090 or 4142130 ×2
  • Technic Beam 1 x 3 Thin Yellow Part 6632 Element 6344174 or 4107823 ×4
  • Technic Beam 1 x 7 Thick Yellow Part 32524 Element 4495934 or 4187082 ×6
  • Technic Brick 1 x 14 [13 Pin Holes] Yellow Part 32018 Element 4655571 or 4544376 ×21
  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Ridges Yellow Part 32064c ×26
  • Technic Brick 1 x 4 [3 Pin Holes] Yellow Part 3701 Element 370124 ×3
  • Technic Brick 1 x 6 [5 Pin Holes] Yellow Part 3894 Element 389424 ×2
  • Technic Brick 5 x 5 Right Angle (1 x 4 - 1 x 4) Yellow Part 32555 Element 6222428 or 4257699 ×4
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 1 spare in the box ×8
  • Technic Plate 2 x 4 [3 Holes] Yellow Part 3709 Element 370924 ×10
  • Tile 1 x 8 with Groove Yellow Part 4162 Element 6388482 or 4189400 ×2
  • Tile 2 x 2 with Groove Yellow Part 3068b Element 6388487 or 306824 ×1
  • Wedge Plate 10 x 10 with 4x4 Cutout and Cut Corner Yellow Part 2401 Element 4297086 ×4

Dark Bluish Gray 148 pieces

  • Bar 1L with Clip Dark Bluish Gray Part 48729a Element 4222196 ×9
  • Brick Round 1 x 1 Open Stud Dark Bluish Gray Part 3062b Element 4211090 ×8
  • Brick Round 2 x 2 with Axle Hole Dark Bluish Gray Part 3941 Element 4249139 Also in Black ×1
  • Brick Sloped 18° 4 x 2 Dark Bluish Gray Part 30363 Element 4210637 ×8
  • Brick Sloped 33° 6 x 6 Double (Train Roof) Dark Bluish Gray Part 4509 Element 6008547 or 4227194 ×1
  • Brick Sloped 45° 2 x 2 Dark Bluish Gray Part 3039 Element 4211054 ×1
  • Brick Special 1 x 2 with Handle Dark Bluish Gray Part 30236 Element 4211128 ×2
  • Dish 2 x 2 Inverted [Radar] Dark Bluish Gray Part 4740 Element 4211010 ×8
  • Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Dark Bluish Gray Part 4349 Element 4210698 ×1
  • Hook with Towball Dark Bluish Gray Part 30395 Element 30395199 or 6347464 ×1
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×2
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 Also in Black ×5
  • Plate 1 x 6 Dark Bluish Gray Part 3666 Element 4211056 Also in Black ×1
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×21
  • Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 ×18
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×1
  • Plate 4 x 4 Dark Bluish Gray Part 3031 Element 4243831 or 4211089 ×8
  • Plate 4 x 6 Dark Bluish Gray Part 3032 Element 4211115 or 3032199 ×1
  • Plate 6 x 6 Dark Bluish Gray Part 3958 Element 4211134 ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Dark Bluish Gray Part 4032a Element 4211042 ×1
  • Plate Special 1 x 2 Side Handle [Free Ends] Dark Bluish Gray Part 2540 Element 4210660 ×3
  • Plate Special 1 x 2 with Ladder Dark Bluish Gray Part 4175 Element 6285244 or 6179567 ×1
  • Plate Special 10 x 10 Octagonal Opening Dark Bluish Gray Part 6063 Element 6172931 or 4296512 ×1
  • Technic Axle 3 with Stud Dark Bluish Gray Part 6587 Element 6587199 or 6129590 ×6
  • Technic Axle and Pin Connector Angled #1 Dark Bluish Gray Part 32013 Element 32013199 or 6296856 ×2
  • Technic Beam 1 x 2 Thin Dark Bluish Gray Part 41677 Element 6338422 or 4210980 ×4
  • Technic Reel 3 x 2 Dark Bluish Gray Part 32012 Element 32012199 or 4239891 ×1
  • Tile 1 x 4 with Groove Dark Bluish Gray Part 2431 Element 4211053 ×4
  • Tile 1 x 6 with Groove Dark Bluish Gray Part 6636 Element 4210651 ×6
  • Tile 1 x 8 with Groove Dark Bluish Gray Part 4162 Element 5210651 or 4211008 ×10
  • Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 ×4
  • Tool Jackhammer / Motor Hammer Dark Bluish Gray Part 30228 Element 4261117 or 4211083 ×1
  • Tool Pickaxe Dark Bluish Gray Part 3841 Element 4211007 ×1
  • Wedge Plate 4 x 4 Cut Corner Dark Bluish Gray Part 30503 Element 4210728 ×4

Black 122 pieces

  • Bar 1 x 4 x 2 with Studs Black Part 4083 Element 408326 ×1
  • Bar 6.6L with Stop Ring [Umbrella Stand] Black Part 4095 Element 409526 ×4
  • Brick Curved 1 x 2 x 1 1/3 with Curved Top Black Part 6091 Element 6383142 or 6184784 ×2
  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 Also in Dark Bluish Gray ×8
  • Brick Special 2 x 6 x 2 Weight with Sealed Bottom and Dimples on Ends Black Part 73090b Element 6094053 or 73843 ×1
  • Equipment Shovel [Rounded Handle End] Black Part 3837 Element 4189009 or 383726 ×1
  • Plate 1 x 4 Black Part 3710 Element 371026 Also in Dark Bluish Gray ×8
  • Plate 1 x 6 Black Part 3666 Element 366626 Also in Dark Bluish Gray ×5
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Black Part 3794a ×6
  • Plate Special 8 x 8 with Grille [No Hole in Center] Black Part 4151a ×1
  • String Cord Thin (0.5mm) 200cm Black Part 56823c200 Element 4276325 or 71162 ×1
  • Technic Axle 12 Black Part 3708 Element 370826 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×8
  • Technic Axle 6 Black Part 3706 Element 370626 ×3
  • Technic Axle 8 Black Part 3707 Element 370726 ×5
  • Technic Axle Connector Double Flexible [Rubber] Black Part 45590 Element 4198367 ×2
  • Technic Axle Connector Ridged [with x Hole x Orientation] Black Part 6538b Element 4113805 or 4107083 ×2
  • Technic Beam 1 x 3 Thick Black Part 32523 Element 4142822 or 3252326 ×4
  • Technic Beam 1 x 4 Thin Black Part 32449 Element 6327548 or 4142236 ×6
  • Technic Brick 1 x 2 [2 Pin Holes] Black Part 32000 Element 3200026 ×2
  • Technic Brick 4 x 6 with 2 x 4 Opening Black Part 32531 Element 6456527 or 4162508 ×3
  • Technic Pin Connector Round [No Slot] Black Part 75535 Element 75619 ×1
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×27
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 3 spares in the box ×16
  • Technic Turntable Large Type 1 Base, 56 Tooth Black Part 2856 Element 4490248 or 285626 ×1
  • Tile Special Round 2 x 2 - Thin Lifting Ring Black Part 2376 Element 237626 ×2

Red 64 pieces

  • Brick 1 x 4 Red Part 3010 Element 301021 ×3
  • Brick 1 x 8 Red Part 3008 Element 300821 ×1
  • Brick Round 2 x 2 x 1 2/3 Dome Top, Blocked Open Stud Red Part 30151a Element 4262579 or 4118935 ×1
  • Door 1 x 4 x 5 Train Right Red Part 4182 Element 6219679 or 4297084 ×1
  • Panel 1 x 4 x 3 [Hollow Studs] Red Part 4215b Element 4262012 or 4105204 ×4
  • Plate 2 x 6 Red Part 3795 Element 379521 ×2
  • Seat / Chair 2 x 2 Red Part 4079 ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×16
  • Technic Axle Connector with Axle Hole Red Part 32039 Element 4118897 ×2
  • Technic Brick 1 x 4 [3 Pin Holes] Red Part 3701 Element 370121 ×2
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Red Part 32054 Element 4140806 or 4125198 ×12
  • Tile Special 1 x 2 Grille with Bottom Groove Red Part 2412b Element 241221 ×18
  • Window 1 x 4 x 3 Train with All Studs Hollow Red Part 4033 Element 4100371 ×1

Blue 24 pieces

  • Brick 1 x 1 Blue Part 3005 Element 300523 ×2
  • Brick 1 x 4 Blue Part 3010 Element 301023 ×5
  • Door 1 x 4 x 5 Train Right Blue Part 4182 Element 6072637 or 4156952 ×1
  • Lever Small Base with Black Lever Blue Part 298c02 Element 4296152 or 4163988 1 spare in the box ×2
  • Minifig Neckwear Basket [D Style] Blue Part 4523 Element 4186464 or 4128572 ×1
  • Panel 1 x 4 x 3 [Hollow Studs] Blue Part 4215b Element 4226902 or 4105205 ×3
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×2
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×1
  • Technic Brick 1 x 6 [5 Pin Holes] Blue Part 3894 Element 389423 ×2
  • Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 1 spare in the box ×1
  • Tile 1 x 6 with Groove Blue Part 6636 Element 4118785 or 4108153 ×2
  • Tile Special 1 x 2 with Handle Blue Part 2432 Element 243223 ×2

White 22 pieces

  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×2
  • Brick 1 x 8 White Part 3008 Element 6550134 or 300801 ×1
  • Brick Round 1 x 1 Open Stud White Part 3062b Element 6619283 or 306201 ×1
  • Brick Special 1 x 2 with Vertical Clip [Thick U Clip] White Part 30237a ×3
  • Equipment Flotation Ring [Life Preserver] White Part 30340 Element 4297083 ×1
  • Panel 1 x 1 x 1 Corner White Part 6231 Element 6619293 or 623101 ×2
  • Plate 6 x 6 White Part 3958 Element 6552116 or 4144012 ×1
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) White Part 3794a ×1
  • Technic Beam 1 x 3 Thin White Part 6632 Element 6360038 or 4107826 ×8
  • Technic Brick 1 x 1 with Pin Hole White Part 6541 Element 6609542 or 654101 ×2

Trans-Orange 6 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Orange Part 54200 Element 6245265 or 4244369 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Orange Part 6141 Element 6514059 or 6240227 1 spare in the box ×4

Tan 4 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×4

Green 3 pieces

  • Plate 1 x 2 Green Part 3023 Element 302328 ×2
  • Tile 1 x 2 with Groove Green Part 3069b Element 306928 ×1

Trans-Brown 3 pieces

  • Panel 1 x 4 x 3 [Hollow Studs] Trans-Brown Part 4215b Element 4163113 ×2
  • Windscreen 3 x 4 x 4 Inverted Trans-Brown Part 4872 Element 4195864 ×1

Trans-Clear 3 pieces

  • Glass for Train Door Lip On Top and Bottom Trans-Clear Part 4183 Element 418340 ×2
  • Glass for Train Window 1 x 4 x 3 Trans-Clear Part 4034 Element 403440 ×1

Reddish Brown 2 pieces

  • Bag / Briefcase Reddish Brown Part 4449 Element 6268857 or 4211235 ×1
  • Equipment Brush / Push Broom Reddish Brown Part 3836 Element 4211157 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 7905-1 [No Color/Any Color] Part 56716 Element 4297022 ×1

Minifigures 3 figures

  • Construction Worker, Orange Jacket with Zipper and Reflective Stripes, Orange Legs, Red Hard Hat, Brown Eyebrows Minifigure, checked as a whole figure ×1
  • Worker, Orange Overalls over Blue Sweater, Red Hard Hat (3626b Head) Minifigure, checked as a whole figure ×1
  • Construction Worker, Orange Jacket with Zipper and Reflective Stripes, Orange Legs, Red Hard Hat, Beard and Glasses 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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