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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.

City Sights Challenge Kit

Checking

9789-2 City Sights Challenge Kit

1,016 pieces in 140 part and color combinations.

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

Black 611 pieces

  • Brick 2 x 4 Black Part 3001 Element 300126 ×4
  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×4
  • Plate 1 x 4 Black Part 3710 Element 371026 ×4
  • Plate 2 x 3 Black Part 3021 Element 302126 ×8
  • Plate 2 x 4 Black Part 3020 Element 302026 ×4
  • Plate 6 x 12 Black Part 3028 Element 302826 ×1
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Black Part 2654 Element 4617551 or 4278359 ×4
  • Rubber Band Small 13mm (Square Cross Section) Black Part 71509 Element 4141606 or 4107153 ×2
  • String Cord Medium Thickness 50cm Black Part 7916c50 ×1
  • Support 4 x 4 x 5 Stanchion, Tall Studs Black Part 2680 Element 268026 ×4
  • Technic Axle 10 Black Part 3737 Element 373726 ×4
  • Technic Axle 12 Black Part 3708 Element 370826 ×6
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×11
  • Technic Axle 4 Black Part 3705 Element 370526 ×6
  • Technic Axle 6 Black Part 3706 Element 370626 ×12
  • Technic Axle 8 Black Part 3707 Element 370726 ×9
  • Technic Axle Connector Ridged [with x Hole x Orientation] Black Part 6538b Element 4113805 or 4107083 ×1
  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×4
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×1
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×1
  • Technic Axle and Pin Connector Angled #3 - 157.5° Black Part 32016 Element 6261386 or 4107082 ×1
  • Technic Axle and Pin Connector Angled #4 - 135° Black Part 32192 Element 6262897 or 4121610 ×1
  • Technic Axle and Pin Connector Angled #5 - 112.5° Black Part 32015 Element 6271346 or 4107084 ×1
  • Technic Axle and Pin Connector Angled #6 - 90° Black Part 32014 Element 6268905 or 4107767 ×2
  • Technic Beam 1 x 11 Thick Black Part 32525 Element 6029578 or 4534909 ×1
  • Technic Beam 1 x 11.5 Double Bent Thick Black Part 32009 Element 6271152 or 4111998 ×4
  • Technic Beam 1 x 15 Thick Black Part 32278 Element 4542573 or 4128603 ×8
  • Technic Beam 1 x 2 Thin Black Part 41677 Element 6338428 or 4167726 ×4
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 ×4
  • Technic Beam 1 x 5 Thin Black Part 32017 Element 6114935 or 4503423 ×2
  • Technic Beam 1 x 7 Thick Black Part 32524 Element 4495935 or 4155458 ×4
  • Technic Beam 1 x 9 Thick Black Part 40490 Element 4645732 or 4542788 ×5
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×4
  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin / Crank Black Part 33299a Element 4156980 ×4
  • Technic Beam 3 x 5 L-Shape Thick Black Part 32526 Element 4142823 or 3252626 ×2
  • Technic Beam Triangle Thin [Type I] Black Part 2905 Element 4142543 or 290526 ×4
  • Technic Brick 1 x 10 [9 Pin Holes] Black Part 2730 Element 273026 ×11
  • Technic Brick 1 x 12 [11 Pin Holes] Black Part 3895 Element 389526 ×21
  • Technic Brick 1 x 14 [13 Pin Holes] Black Part 32018 Element 4107558 ×6
  • Technic Brick 1 x 16 [15 Pin Holes] Black Part 3703 Element 370326 ×56
  • Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Black Part 32064b ×7
  • Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 ×1
  • Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×13
  • Technic Brick 1 x 8 [7 Pin Holes] Black Part 3702 Element 370226 ×19
  • Technic Brick 4 x 6 with 2 x 4 Opening Black Part 32531 Element 6456527 or 4162508 ×4
  • Technic Brick 6 x 8 with 4 x 6 Opening Black Part 32532 Element 6448394 or 4188143 ×1
  • Technic Bush Black Part 3713 Element 6332148 or 6210506 ×5
  • Technic Pin Connector Perpendicular Long Black Part 32557 Element 4143466 ×6
  • Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top] Black Part 32530 Element 4144024 ×2
  • Technic Pin Connector Plate with One Hole (Single on Bottom) Black Part 32529 Element 4144023 ×16
  • Technic Pin Connector Round [No Slot] Black Part 75535 Element 75619 ×3
  • Technic Pin Double with Axle Hole Black Part 32138 Element 4130597 or 4119589 ×8
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×22
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×45
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×211
  • Technic Plate 2 x 8 [7 Holes] Black Part 3738 Element 373826 ×4
  • Wheel 20 x 30 Technic Black Part 4266 Element 4107462 or 4101699 ×8

Red 86 pieces

  • Brick 1 x 1 Red Part 3005 Element 300521 ×8
  • Brick 1 x 12 Red Part 6112 Element 611221 ×2
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×22
  • Brick 1 x 6 Red Part 3009 Element 300921 ×2
  • Brick 1 x 8 Red Part 3008 Element 300821 ×2
  • Brick 2 x 2 Corner Red Part 2357 Element 235771 or 235721 ×4
  • Brick Special 1 x 1 with Headlight Red Part 4070 Element 407021 ×2
  • Brick Special 1 x 2 with Vertical Clip [Thick U Clip] Red Part 30237a ×2
  • Plant, Flower 2 x 2 - Round [Open Stud] Red Part 4728 Element 472821 ×12
  • Plate 2 x 10 Red Part 3832 Element 383221 ×2
  • Plate 2 x 16 Red Part 4282 Element 428221 ×2
  • Plate 4 x 6 Red Part 3032 Element 303221 ×2
  • Plate 6 x 10 Red Part 3033 Element 6509008 or 6249097 ×2
  • Plate 6 x 8 Red Part 3036 Element 303671 or 303621 ×1
  • Technic Beam 1 x 2 Thick Red Part 43857 Element 4185664 ×12
  • Technic Gear 16 Tooth with Round Holes [Old Style] Red Part 4019 Element 4189405 or 4141812 ×1
  • Tile 1 x 4 with Groove Red Part 2431 Element 243121 ×2
  • Tile 1 x 6 with Groove Red Part 6636 Element 4113858 ×4
  • Tile 1 x 8 with Groove Red Part 4162 Element 416221 ×2

Dark Gray 65 pieces

  • Bar 4L (Lightsaber Blade / Wand) Dark Gray Part 30374 Element 4124424 ×1
  • Brick Round Corner 4 x 4 Full Brick Dark Gray Part 2577 Element 4256439 or 4159737 ×4
  • Brick Special 2 x 2 with 2 Pins and Axle Hole Dark Gray Part 30000 Element 3000027 ×4
  • Brick Special 2 x 4 with Pins Dark Gray Part 6249 Element 4143669 or 4100411 ×2
  • Cone 4 x 4 x 2, Axle Hole [Plain] Dark Gray Part 3943b Element 4125548 or 394327 ×1
  • Plate 2 x 2 Dark Gray Part 3022 Element 4114003 or 302227 ×2
  • Plate 2 x 4 Dark Gray Part 3020 Element 4112232 or 302027 ×4
  • Plate 2 x 6 Dark Gray Part 3795 Element 379527 ×1
  • Plate 4 x 10 Dark Gray Part 3030 Element 4118874 ×1
  • Plate 4 x 4 Dark Gray Part 3031 Element 4243823 or 4113911 ×2
  • Plate 6 x 10 Dark Gray Part 3033 Element 4116651 ×2
  • Plate 6 x 12 Dark Gray Part 3028 Element 4140489 ×2
  • Plate Special 8 x 8 with Grille [No Hole in Center] Dark Gray Part 4151a Element 415127 ×30
  • Technic Axle Connector with Axle Hole Dark Gray Part 32039 Element 4141420 ×1
  • Technic Pin 3/4 Dark Gray Part 32002 Element 4109854 ×4
  • Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top] Dark Gray Part 32530 Element 4157827 ×4

Light Gray 61 pieces

  • Hose, Ribbed 7mm D. 8L / 6.4cm Light Gray Part 78c08 ×28
  • Technic Axle Pin without Friction Ridges Lengthwise Light Gray Part 3749 Element 4184168 or 4154179 ×14
  • Technic Bush Light Gray Part 3713 Element 4125313 or 659002 ×4
  • Technic Bush 1/2 Smooth with Axle Hole Reduced Light Gray Part 32123a ×8
  • Technic Pin Long without Friction Ridges - Single Slot Light Gray Part 32556a Element 4154753 ×1
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×3
  • Tile 1 x 6 with Groove Light Gray Part 6636 Element 4106326 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Light Gray Part 2412b Element 241202 ×1

Yellow 51 pieces

  • Hose, Ribbed 7mm D. 12L / 9.6cm Yellow Part 78c12 ×24
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×5
  • Plate 2 x 6 Yellow Part 3795 Element 379524 ×6
  • Tile 1 x 4 with Black Diagonal Stripes Print Yellow Part 2431pr0017 Element 4119091 ×16

Brown 44 pieces

  • Bar 6.6L with Stop Ring [Umbrella Stand] Brown Part 4095 Element 4183685 or 409525 ×4
  • Plant, Palm Tree Base Brown Part 2563 Element 4160960 or 256325 ×4
  • Plant, Palm Tree Trunk - Long Indented Connector Brown Part 2536a Element 253675 or 253625 ×20
  • Rock Boulder 4 x 4, Bottom Brown Part 30294 Element 4164156 or 4164088 ×4
  • Rock Boulder 4 x 4, Top Brown Part 30293 Element 4168208 or 4142848 ×4
  • Technic Axle Connector Ridged [with x Hole x Orientation] Brown Part 6538b Element 4188921 or 4141425 ×4
  • Technic Axle and Pin Connector Angled #1 Brown Part 32013 Element 4141431 or 4130160 ×4

Blue 24 pieces

  • Brick Round 4 x 4 with 4 Side Pin Holes and Center Axle Hole Blue Part 6222 Element 4189402 or 4125244 ×1
  • Hose, Ribbed 7mm D. 10L / 8.0cm Blue Part 78c10 Element 4183090 ×2
  • Technic Axle Connector Ridged [with x Hole x Orientation] Blue Part 6538b Element 4113807 or 4107802 ×1
  • Technic Axle and Pin Connector Angled #1 Blue Part 32013 Element 6332570 or 4107797 ×4
  • Technic Beam 1 x 6 Thin Blue Part 32063 Element 4160897 or 4114673 ×2
  • Technic Bush Blue Part 3713 Element 4189350 or 4188142 ×4
  • Technic Pin Connector Round [No Slot] Blue Part 75535 Element 7553523 or 4143093 ×2
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Blue Part 32054 Element 4140800 or 4107741 ×6
  • Technic Plate Rotor 3 Blade with Smooth Ends and 6 Studs (Propeller) Blue Part 32125 Element 4112875 ×1
  • Technic Reel 3 x 2 Blue Part 32012 Element 4107179 ×1

Green 19 pieces

  • Brick 4 x 10 Green Part 6212 Element 4189404 or 4141350 ×4
  • Plant, Bush 2 x 2 x 4 Green Part 6064 Element 6269009 or 606428 ×2
  • Plant, Leaves 4 x 3 Green Part 2423 Element 6268814 or 242328 ×4
  • Plant, Pine Tree, Large, 4 x 4 x 6 2/3 Green Part 3471 Element 6248463 or 347128 ×2
  • Plate 2 x 2 Green Part 3022 Element 302228 ×4
  • Plate 2 x 4 Green Part 3020 Element 302028 ×3

Tan 18 pieces

  • Plate 2 x 16 Tan Part 4282 Element 6030980 or 4270425 ×7
  • Plate 6 x 16 Tan Part 3027 Element 6096262 or 4543856 ×11

White 15 pieces

  • Plate 2 x 12 White Part 2445 Element 6552091 or 244501 ×6
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×3
  • Tile 1 x 4 with Groove White Part 2431 Element 6548255 or 243101 ×3
  • Tile 2 x 2 with Groove White Part 3068b Element 6548263 or 306801 ×3

Orange 11 pieces

  • Plate 2 x 4 Orange Part 3020 Element 4158355 or 4122468 ×5
  • Plate 2 x 6 Orange Part 3795 Element 4121741 ×6

Lime 5 pieces

  • Technic Axle and Pin Connector Angled #1 Lime Part 32013 Element 6332867 or 6150003 ×1
  • Technic Beam 1 x 15 Thick Lime Part 32278 Element 6255071 or 4542574 ×2
  • Technic Beam 1 x 5 Thick Lime Part 32316 Element 4661486 or 4571220 ×2

Bright Green 4 pieces

  • Plant, Leaves 6 x 5 Bright Green Part 2417 Element 6266964 or 4129872 ×4

Light Green 2 pieces

  • Plate 8 x 8 Light Green Part 41539 Element 4158309 ×2

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.