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Construction Site

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7243 Construction Site

289 pieces in 116 part and color combinations, plus 3 minifigures.

The 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

Plates 36 pieces

  • Plate 1 x 2 Black Part 3023 Element 302326 ×1
  • Plate 1 x 4 Black Part 3710 Element 371026 ×2
  • Plate 2 x 16 Black Part 4282 Element 428276 or 428226 ×4
  • Plate 4 x 6 Black Part 3032 Element 303226 ×1
  • Plate 6 x 6 Black Part 3958 Element 395826 ×1
  • Plate 8 x 8 Black Part 41539 Element 4166619 ×1
  • Plate 1 x 3 Dark Bluish Gray Part 3623 Element 4211133 ×2
  • Plate 2 x 12 Dark Bluish Gray Part 2445 Element 4211067 ×2
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×1
  • Plate 4 x 8 Dark Bluish Gray Part 3035 Element 4211061 ×1
  • Plate 2 x 8 Light Bluish Gray Part 3034 Element 4211406 ×3
  • Plate 1 x 2 Trans-Yellow Part 3023 Element 6514002 or 6240211 Also in Yellow ×2
  • Plate 1 x 2 Yellow Part 3023 Element 302324 Also in Trans-Yellow ×2
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×5
  • Plate 1 x 8 Yellow Part 3460 Element 346024 ×3
  • Plate 2 x 10 Yellow Part 3832 Element 383224 ×1
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×4

Bricks 22 pieces

  • Brick 1 x 2 Black Part 3004 Element 300426 ×3
  • Brick 1 x 16 Yellow Part 2465 Element 4264963 or 246524 ×2
  • Brick 1 x 3 Yellow Part 3622 Element 362224 ×4
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×3
  • Brick 1 x 8 Yellow Part 3008 Element 300824 ×2
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×7
  • Brick 2 x 6 Yellow Part 2456 Element 4181143 or 245624 ×1

Tiles Special 21 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 ×13
  • Tile Special 1 x 2 with Handle Light Bluish Gray Part 2432 Element 4211357 ×8

Bricks Sloped 19 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Orange Part 54200 Element 6245265 or 4244369 ×10
  • Brick Sloped 45° 2 x 1 with Bottom Pin Trans-Orange Part 3040b Element 6507935 or 6219825 ×8
  • Brick Sloped 45° 2 x 4 Yellow Part 3037 Element 4219911 or 303724 ×1

Tiles 19 pieces

  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×4
  • Tile 1 x 4 with Groove Dark Bluish Gray Part 2431 Element 4211053 ×5
  • Tile 1 x 2 with Red 82, Yellow and White Gauges Print Light Bluish Gray Part 3069bpr0101 Element 4227776 ×1
  • Tile 1 x 2 with Groove Trans-Red Part 3069b Element 6514220 or 6251290 ×1
  • Tile 1 x 1 with Groove Trans-Yellow Part 3070b Element 6636668 or 6088721 ×4
  • Tile 1 x 6 with Groove Yellow Part 6636 Element 6388488 or 663624 ×2
  • Tile 2 x 2 with Groove Yellow Part 3068b Element 6388487 or 306824 ×2

Hinges, Arms and Turntables 16 pieces

  • Hinge 1 x 2 Locking with 2 Fingers and Towball Socket, 9 Teeth Black Part 30396 Element 4144567 or 4143351 ×1
  • Hinge Brick 1 x 2 Locking with 1 Finger Vertical End Black Part 30364 Element 6266306 or 4265484 ×2
  • Hinge Brick 2 x 2 Locking with 2 Fingers Vertical and Axle Hole, 9 Teeth Black Part 40902 Element 4162235 ×4
  • Hinge Tile 1 x 4 Locking Dual 1 Fingers on Top [4 Locking Ridges] Black Part 44822 Element 4193108 ×1
  • Hinge Plate 2 x 4 with Articulated Joint - Female Dark Bluish Gray Part 3640 Element 4265486 or 4237555 ×1
  • Hinge Plate 2 x 4 with Articulated Joint - Male Dark Bluish Gray Part 3639 Element 4264952 or 4237553 ×1
  • Hinge Brick 1 x 2 Locking with 2 Fingers Vertical End, 9 Teeth Light Bluish Gray Part 30365 Element 4211694 ×1
  • Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On Ends Light Bluish Gray Part 30552 Element 4211679 ×2
  • Turntable 4 x 4 Square Base with Top, Complete Assembly Light Bluish Gray Part 3403c01 Element 4218349 ×1
  • Hinge 1 x 3 Locking with 2 Fingers and Claw End, 9 Teeth Yellow Part 41529 Element 4159555 ×1
  • Hinge Plate 3 x 4 Locking Dual 2 Finger, 9 Teeth Yellow Part 44570 Element 6173082 or 4184179 ×1

Bricks Round and Cones 15 pieces

  • Brick Round 1 x 1 Open Stud Dark Bluish Gray Part 3062b Element 4211090 ×15

Wheels and Tyres 15 pieces

  • Tread Large, Technic [34 Links] Black Part 71372 Element 4107488 ×1
  • Tyre 30.4 x 14 Offset Tread Black Part 30391 Element 4140670 or 3039126 ×6
  • Technic Tread Hub Yellow Part 32007 Element 4248957 or 4107752 ×2
  • Wheel 18 x 14 with Tread Small Hub Yellow Part 30285 Element 4140734 ×6

Plates Special 14 pieces

  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Black Part 6019 Element 601976 or 601926 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] Dark Bluish Gray Part 2540 Element 4210660 ×2
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Light Bluish Gray Part 6019 Element 4211518 ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Light Bluish Gray Part 3794a ×2
  • Plate Special 2 x 4 with Pins Light Bluish Gray Part 30157 Element 4211572 ×3
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Yellow Part 3839b Element 6255102 or 4542426 ×1
  • Plate Special 1 x 2 with Ladder Yellow Part 4175 Element 6252195 or 6186664 ×2

Technic Bushes 12 pieces

  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×12

Technic Special 9 pieces

  • Technic Brick 1 x 4 with Bumper Holder Black Part 2989 Element 4216376 or 298926 ×4
  • Technic Bumper 2 x 18 Rubber Black Part 48202 Element 4215946 ×2
  • Technic Link 1 x 5 Black Part 30397 Element 4140701 ×2
  • Technic Link 1 x 16 Light Bluish Gray Part 2637 Element 4211556 ×1

Supports, Girders and Cranes 8 pieces

  • Hook with Towball Dark Bluish Gray Part 30395 Element 30395199 or 6347464 ×1
  • Support 2 x 2 x 10 Girder Triangular Vertical - Type 2 - Open Side Top, 1 Post & 1 Panel Dark Bluish Gray Part 57893 Element 4498161 ×4
  • Crane Bucket [Complete Assembly] Yellow Part 3492c01 Element 6021197 or 4614755 ×1
  • Support Crane Stand Double with Studs on Cross-Brace Yellow Part 2635a Element 4264270 or 263524 ×2

Bricks Special 7 pieces

  • Bracket 5 x 2 x 2 1/3 with Holes, Smooth Bottom Black Part 6087 Element 4100423 or 608726 ×1
  • Brick Special 1 x 2 with Grille Dark Bluish Gray Part 2877 Element 4210636 ×2
  • Brick Special 2 x 2 with 2 Pins and Axle Hole Dark Bluish Gray Part 30000 Element 6405646 or 4211024 ×1
  • Slope Inverted 45° 4 x 2 Double with Pins and Axle Hole Type 2 [X Opening] Light Bluish Gray Part 30390b Element 6052373 or 4211633 ×1
  • Brick Special 1 x 2 with Pin Yellow Part 2458 Element 245824 ×2

Technic Axles 7 pieces

  • Technic Axle 10 Black Part 3737 Element 373726 ×4
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×1
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×2

Technic Bricks 7 pieces

  • Technic Brick 1 x 16 [15 Pin Holes] Black Part 3703 Element 370326 ×1
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Dark Bluish Gray Part 32064b ×2
  • Technic Brick 1 x 6 [5 Pin Holes] Dark Bluish Gray Part 3894 Element 4210917 or 3894199 ×4

Technic Connectors 6 pieces

  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×2
  • Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top] Dark Bluish Gray Part 32530 Element 4210763 ×2
  • Technic Pin Connector Round [No Slot] Dark Bluish Gray Part 75535 Element 4214919 ×2

Technic Gears 6 pieces

  • Technic Gear 12 Tooth Bevel Light Bluish Gray Part 6589 Element 6589194 or 4565450 ×2
  • Technic Gear 16 Tooth with Round Holes [Old Style] Light Bluish Gray Part 4019 Element 4562487 or 4211563 ×4

Minifig Accessories 5 pieces

  • Equipment Goblet / Glass Black Part 2343 Element 6247194 or 4223189 ×3
  • Equipment Shovel [Rounded Handle End] Dark Bluish Gray Part 3837 Element 4211006 ×1
  • Equipment Brush / Push Broom Reddish Brown Part 3836 Element 4211157 ×1

String, Bands and Reels 5 pieces

  • String Cord Thin (0.5mm) [Undetermined Length] Black Part 56823 Element 7009426 ×1
  • String Reel 2 x 2 Winch Drum Light Bluish Gray Part 2585 Element 4211370 ×1
  • String Reel 2 x 2 Winch Holder Yellow Part 2584 Element 4206658 ×1
  • Technic Rubber Belt Large [33mm ID] [Round Cross Section] Yellow Part 85546 Element 4544151 or 70905 ×2

Transportation - Land 5 pieces

  • Steering Stand 1 x 2 with Black Steering Wheel Blue Part 3829c01 Element 9566 ×2
  • Steering Wheel Small, 2 x 2 Light Bluish Gray Part 30663 Element 30663194 or 4211701 ×1
  • Tipper Bed 4 x 6, Open Studs Light Bluish Gray Part 4080 Element 4611651 or 4263420 ×1
  • Tipper Bed 12 x 8 x 3 1/3 Yellow Part 30300 Element 4264989 or 4140813 ×1

Transportation - Sea and Air 5 pieces

  • Propeller 8 Blade 5 Diameter Light Bluish Gray Part 41530 Element 6035418 or 4159341 ×5

Bricks Curved 4 pieces

  • Brick Curved 2 x 2, Two Top Studs Yellow Part 30165 Element 4187061 or 4181838 ×4

Bricks Wedged 4 pieces

  • Brick Wedged, Angled 4 x 2 Left Yellow Part 41768 Element 4160348 ×1
  • Brick Wedged, Angled 4 x 2 Right Yellow Part 41767 Element 4160333 ×1
  • Brick Wedged, Curved Triple 4 x 4 x 2/3, 2 Studs Yellow Part 45677 Element 6492532 or 4193073 ×1
  • Brick Wedged, Sloped Inverted 4 x 4 Triple [2 Connections between Front Studs] Yellow Part 4855 Element 4262136 or 485524 ×1

Windscreens and Fuselage 4 pieces

  • Windscreen 2 x 4 x 2 Trans-Brown Part 3823 Element 6253684 or 4167504 ×1
  • Windscreen 3 x 4 x 4 Inverted Trans-Brown Part 4872 Element 4195864 ×1
  • Windscreen 5 x 2 x 1 2/3 Yellow Part 6070 Element 4550708 or 4198670 ×2

Flags, Banners and Signs 3 pieces

  • Road Sign Clip-on 2 x 2 Round Yellow Part 30261 Element 4264961 or 4140736 ×1
  • Road Sign Clip-on 2 x 2 Square Yellow Part 30258 Element 4116818 ×2

Bars, Ladders and Fences 2 pieces

  • Bar 1 x 8 x 2 Light Bluish Gray Part 2486 Element 4587225 or 4263315 ×2

Minifig Neckwear 2 pieces

  • Minifig Neckwear Bracket [One Stud] Dark Bluish Gray Part 42446 Element 4210469 ×2

Plates Round Curved and Dishes 2 pieces

  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 1 spare in the box ×2

Technic Beams Special 2 pieces

  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin / Crank Light Bluish Gray Part 33299a Element 4211688 ×2

Technic Pins 2 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×1
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×1

Technic Steering, Suspension and Engine 2 pieces

  • Technic Steering Pulley Large Light Bluish Gray Part 3736 Element 4597262 or 4542736 ×2

Pneumatics 1 piece

  • Pneumatic T-Piece (T Bar) [New Style] Light Bluish Gray Part 4697b Element 4211508 1 spare in the box ×1

Stickers 1 piece

  • Sticker Sheet for Set 7243-1 [No Color/Any Color] Part 53136 Element 4264781 ×1

Windows and Doors 1 piece

  • Window 1 x 4 x 3 Train with All Studs Hollow Yellow Part 4033 Element 4264949 or 4111855 ×1

Minifigures 3 figures

  • Construction Worker, Orange Jacket with Zipper and Reflective Stripes, Orange Legs, Red Hard Hat, Moustache and Stubble Minifigure, checked as a whole figure ×1
  • Construction Worker, Orange Safety Vest with Zipper and Pockets, Orange Legs, Red Hard Hat Minifigure, checked as a whole figure ×1
  • Construction Worker, Open Orange Jacket over Blue Shirt with Tie, 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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