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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.

The Mine

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4204 The Mine

728 pieces in 303 part and color combinations, plus 4 minifigures.

The official piece count includes the 20 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.

4 more look-alike pairs
  • Tile 1 x 4 with Groove Black ×1 Dark Bluish Gray ×3 Black is darker than Dark Bluish Gray.
  • Tile 1 x 8 with Groove Black ×5 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.
  • Tile 2 x 4 with Groove Black ×2 Dark Bluish Gray ×3 Black is darker than Dark Bluish Gray.
  • Tile Special 1 x 2 Grille with Bottom Groove Black ×6 Dark Bluish Gray ×6 Black is darker than Dark Bluish Gray.
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Piece checklist

Plates 140 pieces

  • Plate 1 x 4 Black Part 3710 Element 371026 ×7
  • Plate 4 x 10 Black Part 3030 Element 303076 or 303026 ×1
  • Plate 4 x 6 Black Part 3032 Element 303226 Also in Dark Bluish Gray ×1
  • Plate 6 x 6 Black Part 3958 Element 395826 ×2
  • Plate 6 x 8 Black Part 3036 Element 303676 or 303626 Also in Dark Bluish Gray ×1
  • Plate 2 x 2 Blue Part 3022 Element 4613973 or 302223 ×1
  • Plate 2 x 3 Blue Part 3021 Element 302123 ×2
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×3
  • Plate 1 x 6 Dark Bluish Gray Part 3666 Element 4211056 ×5
  • Plate 1 x 8 Dark Bluish Gray Part 3460 Element 4210998 ×2
  • Plate 2 x 12 Dark Bluish Gray Part 2445 Element 4211067 ×1
  • Plate 2 x 3 Dark Bluish Gray Part 3021 Element 4211043 ×2
  • Plate 2 x 4 Dark Bluish Gray Part 3020 Element 4211065 ×8
  • Plate 2 x 6 Dark Bluish Gray Part 3795 Element 4211002 ×1
  • Plate 2 x 8 Dark Bluish Gray Part 3034 Element 4210997 ×1
  • Plate 4 x 12 Dark Bluish Gray Part 3029 Element 4210706 ×1
  • Plate 4 x 6 Dark Bluish Gray Part 3032 Element 4211115 or 3032199 Also in Black ×3
  • Plate 6 x 10 Dark Bluish Gray Part 3033 Element 4211114 ×2
  • Plate 6 x 8 Dark Bluish Gray Part 3036 Element 4210794 Also in Black ×1
  • Plate 16 x 16 Dark Tan Part 91405 Element 4613196 ×1
  • Plate 4 x 10 Dark Tan Part 3030 Element 6001001 ×2
  • Plate 8 x 16 Dark Tan Part 92438 Element 4624163 ×2
  • Plate 1 x 2 Green Part 3023 Element 302328 ×6
  • Plate 1 x 4 Green Part 3710 Element 371028 ×6
  • Plate 1 x 6 Green Part 3666 Element 366628 ×1
  • Plate 2 x 6 Green Part 3795 Element 379528 ×2
  • Plate 4 x 4 Green Part 3031 Element 4243821 or 4113158 ×1
  • Plate 1 x 4 Light Bluish Gray Part 3710 Element 4211445 ×2
  • Plate 2 x 14 Light Bluish Gray Part 91988 Element 4662161 ×1
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×1
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×1
  • Plate 2 x 4 Light Bluish Gray Part 3020 Element 4211395 ×1
  • Plate 2 x 8 Light Bluish Gray Part 3034 Element 4211406 ×1
  • Plate 4 x 4 Light Bluish Gray Part 3031 Element 4243797 or 4211403 ×1
  • Plate 1 x 1 Red Part 3024 Element 302421 ×3
  • Plate 1 x 10 Red Part 4477 Element 447721 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 Also in Trans-Red ×4
  • Plate 1 x 3 Red Part 3623 Element 362321 ×2
  • Plate 1 x 6 Red Part 3666 Element 366621 ×1
  • Plate 2 x 12 Red Part 2445 Element 4255035 or 4161545 ×1
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×1
  • Plate 1 x 2 Reddish Brown Part 3023 Element 4211150 ×4
  • Plate 1 x 3 Reddish Brown Part 3623 Element 4211152 ×3
  • Plate 2 x 2 Reddish Brown Part 3022 Element 4613975 or 4216695 ×4
  • Plate 2 x 2 Corner Reddish Brown Part 2420 Element 4211257 ×4
  • Plate 2 x 4 Reddish Brown Part 3020 Element 4211186 ×3
  • Plate 2 x 6 Reddish Brown Part 3795 Element 4211247 ×1
  • Plate 4 x 4 Reddish Brown Part 3031 Element 4243838 or 4225868 ×1
  • Plate 1 x 2 Trans-Red Part 3023 Element 6514003 or 6240212 Also in Red ×2
  • Plate 1 x 2 Trans-Yellow Part 3023 Element 6514002 or 6240211 Also in Yellow ×3
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×1
  • Plate 1 x 1 Yellow Part 3024 Element 302424 ×2
  • Plate 1 x 2 Yellow Part 3023 Element 302324 Also in Trans-Yellow ×7
  • Plate 1 x 3 Yellow Part 3623 Element 362324 ×4
  • Plate 1 x 4 Yellow Part 3710 Element 371024 ×3
  • Plate 2 x 4 Yellow Part 3020 Element 302024 ×9
  • Plate 2 x 6 Yellow Part 3795 Element 379524 ×1
  • Plate 4 x 4 Yellow Part 3031 Element 4243817 or 303124 ×1

Bricks 87 pieces

  • Brick 1 x 2 Black Part 3004 Element 300426 ×4
  • Brick 1 x 4 Black Part 3010 Element 301026 ×2
  • Brick 1 x 6 Black Part 3009 Element 300926 ×1
  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 Also in Dark Bluish Gray ×2
  • Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric Ridges Dark Bluish Gray Part 2454a ×2
  • Brick 1 x 8 Dark Bluish Gray Part 3008 Element 4211099 ×1
  • Brick 2 x 2 Dark Bluish Gray Part 3003 Element 4211060 Also in Black ×5
  • Brick 2 x 6 Dark Bluish Gray Part 2456 Element 4282819 or 4210875 ×1
  • Brick 1 x 1 Green Part 3005 Element 300528 ×2
  • Brick 1 x 2 Green Part 3004 Element 4107736 or 300428 ×1
  • Brick 1 x 3 Green Part 3622 Element 4109679 or 362228 ×6
  • Brick 1 x 4 Green Part 3010 Element 4112838 or 301028 ×2
  • Brick 1 x 10 Light Bluish Gray Part 6111 Element 4211521 ×2
  • Brick 1 x 2 Light Bluish Gray Part 3004 Element 4211388 ×7
  • Brick 1 x 3 Light Bluish Gray Part 3622 Element 4211428 ×1
  • Brick 1 x 6 Light Bluish Gray Part 3009 Element 4211393 ×7
  • Brick 2 x 4 Light Bluish Gray Part 3001 Element 4211385 ×2
  • Brick 2 x 6 Light Bluish Gray Part 2456 Element 4274668 or 4211795 ×2
  • Brick 1 x 1 x 5 with Blocked Open or Hollow Stud Red Part 2453a Element 4160953 or 245321 ×1
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×8
  • Brick 1 x 4 Red Part 3010 Element 301021 ×2
  • Brick 1 x 8 Red Part 3008 Element 300821 ×2
  • Brick 2 x 3 Red Part 3002 Element 300271 or 300221 ×1
  • Brick 1 x 1 Reddish Brown Part 3005 Element 4211242 ×6
  • Brick 1 x 4 Reddish Brown Part 3010 Element 4211225 ×4
  • Brick 2 x 2 Reddish Brown Part 3003 Element 4211210 ×2
  • Brick 2 x 3 Reddish Brown Part 3002 Element 4216668 ×1
  • Brick 2 x 2 Tan Part 3003 Element 4114306 or 300305 ×1
  • Brick 1 x 4 without Bottom Tubes Trans-Brown Part 3066 Element 6514079 or 6245290 ×1
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×3
  • Brick 2 x 2 Yellow Part 3003 Element 4103588 or 300374 ×2
  • Brick 2 x 3 Yellow Part 3002 Element 300224 ×1
  • Brick 2 x 4 Yellow Part 3001 Element 300124 ×2

Plates Special 68 pieces

  • Bracket 1 x 2 - 1 x 4 [Square Corners] Black Part 2436 Element 4282746 or 243626 ×1
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Black Part 61252 Element 6308000 or 4517925 ×1
  • Plate Special 1 x 2 [Side Handle Closed Ends] Black Part 48336 Element 4225201 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove (Jumper) Black Part 3794b Element 379426 ×1
  • Plate Special 1 x 2 with Door Rail Black Part 32028 Element 4107761 ×2
  • Plate Special 1 x 4 with Angled Tubes Black Part 61072 Element 4516196 ×3
  • Plate Special 1 x 4 with Wheels Holder Black Part 2926 Element 6338416 or 292626 ×1
  • Plate Special 2 x 2 with Wheel Holder Black Part 4488 Element 6092658 or 448826 ×6
  • Plate Special 2 x 2 with Wheel Holders Black Part 4600 Element 460026 ×4
  • Plate Special 2 x 2 with Wheels Holder Wide - Technic Pins Black Part 47720 Element 6354604 or 4217725 ×2
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Dark Bluish Gray Part 4081b Element 6281996 or 4632574 ×2
  • Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm] Dark Bluish Gray Part 88072 Element 6261355 or 4611703 ×1
  • Plate Special 1 x 2 with Ladder Dark Bluish Gray Part 4175 Element 6285244 or 6179567 ×3
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Dark Bluish Gray Part 87580 Element 6126083 or 4565322 ×1
  • Plate Special 4 x 4, Studs on One Edge Plain] Dark Bluish Gray Part 6179 Element 4509911 or 4210849 ×1
  • Plate Special 2 x 6 x 2/3 with 4 Studs on Side, 1 Support Wall on Bottom Green Part 87609 Element 6000070 ×1
  • Bracket 1 x 2 - 1 x 2 Light Bluish Gray Part 99781 Element 4654582 ×2
  • Bracket 1 x 2 - 1 x 4 [Square Corners] Light Bluish Gray Part 2436 Element 4282740 or 4211358 ×1
  • Bracket 1 x 2 - 2 x 4 Light Bluish Gray Part 93274 Element 6118827 or 4613165 ×2
  • Bracket 3 x 4 - 3 x 4 Light Bluish Gray Part 98287 Element 4646525 ×8
  • Plate Special 1 x 2 with Clip Horizontal on End Light Bluish Gray Part 63868 Element 6319336 or 4535738 ×2
  • Plate Special 1 x 2 with Clips Horizontal [Thick U-Clips] Light Bluish Gray Part 60470a Element 4537900 ×2
  • Plate Special 1 x 2, Top Clip [Split] Light Bluish Gray Part 92280 Element 4598526 ×2
  • Plate Special 1 x 4 with Towball Socket, Flattened Light Bluish Gray Part 98263 Element 6273218 or 4667166 ×2
  • Plate Special 1 x 8 with Door Rail Light Bluish Gray Part 4510 Element 4211498 ×2
  • Plate Special 2 x 2 with Towball Light Bluish Gray Part 3729 Element 4239654 ×2
  • Plate Special 2 x 2 with Towball Socket, Short, Flattened with Holes and Axle Hole in Center Light Bluish Gray Part 63082 Element 6273227 or 4530469 ×1
  • Plate Special 2 x 2 with Wheels Holder Wide Light Bluish Gray Part 6157 Element 4211569 ×1
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Solid Anti-stud] Light Bluish Gray Part 99206 Element 4654577 ×2
  • Plate Special 1 x 2 [Side Handle Closed Ends] Red Part 48336 Element 4226876 ×1
  • Plate Special 2 x 2 with 2 Pin Holes Red Part 2817 Element 281721 ×1
  • Plate Special 4 x 4 with Clips Horizontal White Part 47998 Element 4651885 ×1
  • Bracket 1 x 2 - 2 x 2 Yellow Part 44728 Element 6117938 or 4615642 ×3
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Yellow Part 87580 Element 6126050 or 4565386 ×1
  • Plate Special 4 x 4 with 2 x 2 Opening Yellow Part 64799 Element 4549896 ×1

Tiles 57 pieces

  • Tile 1 x 3 Black Part 63864 Element 4558170 ×2
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 Also in Dark Bluish Gray ×1
  • Tile 1 x 6 with Groove Black Part 6636 Element 663626 ×1
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 Also in Dark Bluish Gray ×5
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×1
  • Tile 2 x 4 with Groove Black Part 87079 Element 4560182 Also in Dark Bluish Gray ×2
  • Tile 1 x 2 with Groove Dark Bluish Gray Part 3069b Element 4211052 ×1
  • Tile 1 x 4 with Groove Dark Bluish Gray Part 2431 Element 4211053 Also in Black ×3
  • Tile 1 x 8 with Groove Dark Bluish Gray Part 4162 Element 5210651 or 4211008 Also in Black ×2
  • Tile 2 x 4 with Groove Dark Bluish Gray Part 87079 Element 4560184 Also in Black ×3
  • Tile 1 x 4 with Groove Green Part 2431 Element 243128 ×1
  • Tile 1 x 8 with Groove Green Part 4162 Element 4296081 or 4238505 ×6
  • Tile 1 x 1 with White and Red Gauge Print Light Bluish Gray Part 3070bpr0007 Element 4255629 1 spare in the box ×1
  • Tile 1 x 6 with Groove Light Bluish Gray Part 6636 Element 4211549 ×2
  • Tile 2 x 2 with Groove Light Bluish Gray Part 3068b Element 4211413 ×10
  • Tile 2 x 4 with Groove Light Bluish Gray Part 87079 Element 4560183 ×3
  • Tile 1 x 2 with Groove Metallic Gold Part 3069b Element 6546117 or 6265247 ×2
  • Tile 1 x 2 with Groove Red Part 3069b Element 4178178 or 306921 ×1
  • Tile 1 x 4 with Groove Reddish Brown Part 2431 Element 4211194 ×4
  • Tile 1 x 2 with Groove Yellow Part 3069b Element 306924 ×4
  • Tile 1 x 4 with Groove Yellow Part 2431 Element 243124 ×1
  • Tile 2 x 2 with Groove Yellow Part 3068b Element 6388487 or 306824 ×1

Bricks Sloped 45 pieces

  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×2
  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Blue Part 61409 Element 4597338 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Dark Bluish Gray Part 54200 Element 4504378 or 4244373 1 spare in the box ×4
  • Brick Sloped 33° 3 x 1 Dark Bluish Gray Part 4286 Element 4211045 ×1
  • Brick Sloped Inverted 45° 2 x 1 Dark Bluish Gray Part 3665 Element 4211096 ×4
  • Brick Sloped 30° 1 x 2 x 2/3 Green Part 85984 Element 6000071 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Light Bluish Gray Part 54200 Element 4521921 or 4244372 3 spares in the box ×2
  • Brick Sloped 30° 1 x 2 x 2/3 Light Bluish Gray Part 85984 Element 4568637 ×3
  • Brick Sloped 45° 2 x 1 with Bottom Pin Reddish Brown Part 3040b Element 4211199 ×5
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Clear Part 54200 Element 6245250 or 4244362 3 spares in the box ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Orange Part 54200 Element 6245265 or 4244369 4 spares in the box ×4
  • Brick Sloped 18° 4 x 1 Yellow Part 60477 Element 4656699 or 4515361 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Yellow Part 54200 Element 4504381 or 4283095 1 spare in the box ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Yellow Part 3040b Element 4121965 or 304024 ×3
  • Brick Sloped Inverted 45° 2 x 1 Yellow Part 3665 Element 366524 ×8

Bricks Round and Cones 43 pieces

  • Brick Round 1 x 1 Open Stud Light Bluish Gray Part 3062b Element 4211412 ×13
  • Brick Round 1 x 1 Open Stud Red Part 3062b Element 306221 ×4
  • Brick Round 2 x 2 [Grill] Red Part 92947 Element 4650646 or 4612108 ×2
  • Brick Round 1 x 1 Open Stud Reddish Brown Part 3062b Element 4211183 ×12
  • Brick Round 1 x 1 Open Stud Tan Part 3062b Element 4117070 or 306205 ×12

Wheels and Tyres 36 pieces

  • Train Wheel Small, hole notched for wheels holder pin Black Part 50254 Element 4295370 or 4227006 ×8
  • Tyre 14 x 4 Smooth Small Single [New Style] Black Part 59895 Element 4516843 or 4507700 1 spare in the box ×1
  • Tyre 21 x 12 with Offset Tread Small Wide and Center Band Black Part 87697 Element 6575727 or 4568644 ×8
  • Tyre 30.4 x 14 Offset Tread [Centre Band] Black Part 92402 Element 4619323 ×4
  • Wheel Hard Plastic with Small Cleats and Flanges Black Part 64712 Element 4538782 ×1
  • Wheel 11 x 12 with Hole Notched for Wheels Holder Pin Light Bluish Gray Part 6014b Element 4211764 ×8
  • Wheel 18 x 14 with Pin Hole, Fake Bolts and Shallow Spokes Light Bluish Gray Part 55981 Element 6109684 or 4299119 ×4
  • Wheel Centre Small with Stub Axles (Pulley Wheel) White Part 3464 Element 4296997 ×1
  • Technic Wedge Belt Wheel [aka Pulley] Yellow Part 4185 Element 6636439 or 6363273 ×1

Panels 25 pieces

  • Panel 1 x 6 x 5 Dark Bluish Gray Part 59349 Element 4505068 ×3
  • Panel 1 x 2 x 3 [Side Supports / Hollow Studs] Light Bluish Gray Part 87544 Element 4585429 ×1
  • Panel 1 x 6 x 3 with Studs on Sides Light Bluish Gray Part 98280 Element 6292533 or 4648115 ×3
  • Panel 1 x 2 x 1 [Square Corners] Trans-Brown Part 4865a Element 4200798 ×1
  • Panel 1 x 2 x 2 [Side Supports / Hollow Studs] Trans-Brown Part 87552 Element 6581810 or 6253217 ×2
  • Panel 1 x 2 x 3 [Side Supports / Hollow Studs] Trans-Brown Part 87544 Element 6507950 or 6239388 ×2
  • Panel 1 x 4 x 3 [Side Supports / Hollow Studs] White Part 60581 Element 6615548 or 4558208 ×1
  • Panel 1 x 2 x 1 [Rounded Corners] Yellow Part 4865b Element 6146219 ×4
  • Panel 1 x 2 x 2 [Side Supports / Hollow Studs] Yellow Part 87552 Element 4593677 ×2
  • Panel 1 x 4 x 1 with Rounded Corners [Thin Wall] Yellow Part 15207 Element 6092648 ×6

Hinges, Arms and Turntables 24 pieces

  • Hinge Plate 1 x 2 Locking with 1 Finger on Side, with Groove Black Part 44567a Element 4185620 ×8
  • Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth Black Part 44302a Element 4183060 ×2
  • Turntable 4 x 4 Square Base, Locking Black Part 61485 Element 4517986 ×1
  • Hinge Train Gate 2 x 4 Locking Dual 2 Fingers without Rear Reinforcements, 7 Teeth Dark Bluish Gray Part 92092 Element 6301930 or 4611708 ×2
  • Plate Special 4 x 6 with Trap Door Hinge [Long Pins] Dark Bluish Gray Part 92099 Element 4595710 ×1
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Green Part 73983 Element 6102767 or 4187931 ×2
  • Hinge Brick 2 x 2 Top Plate Thin Light Bluish Gray Part 6134 Element 4211881 ×1
  • Hinge Plate 1 x 2 Locking with 2 Fingers on Side, 9 Teeth Light Bluish Gray Part 60471 Element 4515341 ×2
  • Hinge Plate 2 x 4 with Pin Hole with 3 Holes - Top Light Bluish Gray Part 98286 Element 4646513 ×2
  • Hinge Brick 1 x 2 Base Red Part 3937 Element 393721 ×1
  • Hinge Plate 2 x 4 with Pin Hole with 3 Holes - Bottom Yellow Part 98285 Element 6003941 ×2

Tiles Special 22 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 Also in Dark Bluish Gray ×6
  • Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 Also in Black ×6
  • Tile Special 1 x 1 with Clip with Rounded Tips Light Bluish Gray Part 12825 Element 6030711 ×5
  • Tile Special 1 x 2 Grille with Bottom Groove Light Bluish Gray Part 2412b Element 4211350 ×2
  • Tile Special 1 x 2 with Handle Red Part 2432 Element 243221 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Yellow Part 2412b Element 241224 ×2

Bricks Special 19 pieces

  • Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud] Black Part 60475b Element 6336977 or 4533771 ×2
  • Brick Special 1 x 1 x 3 with 2 Clips Vertical [Hollow Stud, Open O Clips] Black Part 60583b Element 6320325 or 4563681 ×1
  • Brick Special 1 x 1 with Stud on 1 Side Light Bluish Gray Part 87087 Element 4558953 ×4
  • Brick Special 1 x 4 with Groove Light Bluish Gray Part 2653 Element 4211613 ×2
  • Brick Special 1 x 1 with Headlight Red Part 4070 Element 407021 ×1
  • Brick Special 1 x 1 x 3 with 2 Clips Vertical [Hollow Stud, Open O Clips] Red Part 60583b Element 6320327 or 4563682 ×2
  • Brick Special 1 x 1 with Stud on 1 Side White Part 87087 Element 6550190 or 4558952 ×2
  • Brick Special 1 x 1 with Clip Vertical [Open O Clip, Hollow Stud] Yellow Part 60475b Element 6336971 or 4515354 ×1
  • Brick Special 1 x 2 with Grille Yellow Part 2877 Element 287724 ×2
  • Brick Special 1 x 2 with Pin Yellow Part 2458 Element 245824 ×2

Transportation - Land 17 pieces

  • Steering Wheel Small, 2 x 2 Black Part 30663 Element 4153044 ×1
  • Seat / Chair 2 x 2 with Center Sprue Mark Blue Part 4079b Element 407923 ×1
  • Steering Stand 1 x 2 with Black Steering Wheel Blue Part 3829c01 Element 9566 ×1
  • Vehicle Track, Train, Plain Rail Straight (no slots, no notches on end) Dark Bluish Gray Part 3228c Element 6313875 or 4638990 ×8
  • Wheel Arch, Mudguard 4 x 2 1/2 x 2 with 2 x 2 Plate Dark Bluish Gray Part 50745 Element 4260124 ×2
  • Seat / Chair 2 x 2 with Center Sprue Mark Red Part 4079b Element 407921 ×2
  • Steering Stand 1 x 2 with Black Steering Wheel Red Part 3829c01 Element 9552 ×2

Tiles Round and Curved 16 pieces

  • Tile Round 1 x 1 Light Bluish Gray Part 98138 Element 6284071 or 4650260 2 spares in the box ×4
  • Tile Round 2 x 2 with Bottom Cross Red Part 4150 Element 415071 or 415021 ×2
  • Tile Round 1 x 1 Trans-Clear Part 98138 Element 6514191 or 6274738 4 spares in the box ×2
  • Tile Round 1 x 1 Trans-Red Part 98138 Element 6514189 or 6258607 2 spares in the box ×8

Rock 14 pieces

  • Rock Boulder 4 x 4, Bottom Dark Bluish Gray Part 30294 Element 4506779 ×2
  • Rock Boulder 4 x 4, Top Dark Bluish Gray Part 30293 Element 4506778 ×2
  • Rock Panel Rectangular 4 x 10 x 6 Dark Bluish Gray Part 6082 Element 4279446 ×2
  • Rock Panel Triangular 3 x 8 x 7 Dark Bluish Gray Part 6083 Element 4216709 ×2
  • Rock 1 x 1 Crystal 5 Point Pearl Gold Part 30385 Element 6174085 or 4516816 ×6

Bars, Ladders and Fences 13 pieces

  • Bar 4L (Lightsaber Blade / Wand) Black Part 30374 Element 6116604 or 4140303 ×2
  • Bar 1 x 4 x 3 [End Tabs] Dark Bluish Gray Part 62113 Element 4521886 ×1
  • Antenna 1 x 4 with Rounded Top Light Bluish Gray Part 3957a ×1
  • Bar 4L (Lightsaber Blade / Wand) Light Bluish Gray Part 30374 Element 6116608 or 4211628 ×1
  • Lever Small Base with Black Lever Red Part 298c02 Element 74335 2 spares in the box ×3
  • Light Cover 1 x 1 Round with Internal Bar / Bionicle Barraki Eye Trans-Orange Part 58176 Element 6507868 or 6171764 ×4
  • Fence 1 x 8 x 2 2/3 White Part 6079 Element 4541808 or 4184955 ×1

Bricks Curved 13 pieces

  • Brick Arch 1 x 4 Dark Bluish Gray Part 3659 Element 4210999 ×1
  • Brick Arch 1 x 8 x 2 Dark Bluish Gray Part 3308 Element 4541748 or 4220973 ×2
  • Brick Curved 3 x 1 No Studs Dark Bluish Gray Part 50950 Element 4246896 ×2
  • Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] Green Part 11153 Element 6578747 or 6042951 ×2
  • Brick Arch 1 x 12 x 3 Light Bluish Gray Part 6108 Element 4224592 ×2
  • Brick Curved 2 x 2 x 2/3 Two Studs and Curved Slope End Light Bluish Gray Part 47457 Element 4494475 ×2
  • Brick Curved 4 x 2 No Studs Light Bluish Gray Part 93606 Element 4622742 ×1
  • Brick Curved 6 x 4 x 2/3 Quad Curved with 2 x 2 Studs Light Bluish Gray Part 98281 Element 6001000 ×1

Plates Round Curved and Dishes 13 pieces

  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 1 spare in the box ×1
  • Plate Round 1 x 1 with Solid Stud Blue Part 6141 Element 614123 1 spare in the box ×2
  • Dish 2 x 2 Inverted [Radar] Dark Bluish Gray Part 4740 Element 4211010 ×5
  • Plate Round 1 x 1 with Solid Stud Red Part 6141 Element 614121 1 spare in the box Also in Trans-Red ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Green Part 6141 Element 6514057 or 6240221 1 spare in the box ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box Also in Red ×1
  • Plate Round 4 x 4 with Pin Hole White Part 60474 Element 6564904 or 4515347 ×1

Minifig Accessories 11 pieces

  • Equipment Radio [Extended Handle, Compact Speaker Grille] Black Part 3962b Element 396226 ×1
  • Equipment Shovel [Rounded Handle End] Black Part 3837 Element 4189009 or 383726 ×1
  • Equipment Binoculars Dark Bluish Gray Part 30162 Element 4587887 or 4211051 ×1
  • Equipment Cup / Mug [Plain] Red Part 3899 Element 389921 ×2
  • Equipment Dynamite Sticks Red Part 64728 Element 6270088 or 4538780 ×3
  • Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun Red Part 4349 Element 434921 ×1
  • Equipment Wheelbarrow Red Part 98288 Element 6597501 or 6293823 ×1
  • Equipment Brush / Push Broom Reddish Brown Part 3836 Element 4211157 ×1

Technic Bricks 11 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Light Bluish Gray Part 3700 Element 4211440 ×3
  • Technic Brick 1 x 4 [3 Pin Holes] Light Bluish Gray Part 3701 Element 4211441 ×4
  • Technic Brick 1 x 2 [1 Pin Hole] Yellow Part 3700 Element 370024 ×4

Windows and Doors 9 pieces

  • Door Frame 1 x 4 x 6 Type 2 Black Part 60596 Element 6337273 or 4535834 ×1
  • Window 1 x 4 x 3 without Shutter Tabs Black Part 60594 Element 4530589 or 4520620 ×1
  • Glass for Window 1 x 2 x 2 Flat Trans-Brown Part 60601 Element 6514138 or 6254564 ×2
  • Door 1 x 3 x 1 Left Yellow Part 3822 Element 6587460 or 4190511 ×1
  • Door 1 x 3 x 1 Right Yellow Part 3821 Element 6587459 or 4537985 ×1
  • Door 1 x 4 x 6 with 4 Panes and Stud Handle Yellow Part 60623 Element 4528550 ×1
  • Window 1 x 2 x 2 Plane, Hollow Studs, Single Hole Top and Bottom for Glass Yellow Part 60032 Element 6249279 or 6153842 ×2

Technic Pins 8 pieces

  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 2 spares in the box ×4
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×2
  • Technic Pin 3/4 Dark Bluish Gray Part 32002 Element 32002199 or 4211050 1 spare in the box ×2

Technic Axles 7 pieces

  • Technic Axle 10 Black Part 3737 Element 373726 ×1
  • Technic Axle 4 Black Part 3705 Element 370526 ×2
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×2
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×1

Containers 4 pieces

  • Cupboard 2 x 3 x 2 Door Dark Bluish Gray Part 4533 Element 4210811 ×1
  • Container Box 2 x 2 x 2 - Top Opening Green Part 61780 Element 4548102 ×1
  • Cupboard 2 x 3 x 2 with Hollow Studs Light Bluish Gray Part 92410 Element 4610112 ×1
  • Box / Crate with Handholds 3 x 4 x 1 2/3 Reddish Brown Part 30150 Element 4211185 ×1

String, Bands and Reels 3 pieces

  • String Cord Thin (0.5mm) 50cm Black Part 56823c50 Element 6530026 or 6489925 ×1
  • String Reel 2 x 2 Winch Holder Black Part 2584 Element 6465125 or 6163507 ×1
  • String Reel 2 x 2 Winch Drum Light Bluish Gray Part 2585 Element 4211370 ×1

Supports, Girders and Cranes 3 pieces

  • Conveyor Belt Modern [Complete Assembly] Dark Bluish Gray Part 92715c01 Element 4597139 ×1
  • Crane Arm Outside, Wide with Pin Hole at Mid-Point Yellow Part 57779 Element 6249954 or 6142502 ×1
  • Crane Bucket [Complete Assembly] Yellow Part 3492c01 Element 6021197 or 4614755 ×1

Technic Bushes 3 pieces

  • Technic Bush Red Part 3713 Element 6271820 or 4227155 2 spares in the box ×3

Technic Connectors 3 pieces

  • Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes] Light Bluish Gray Part 87082 Element 4560175 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] Red Part 59443 Element 4513174 ×2

Minifig Shields, Weapons, & Tools 2 pieces

  • Tool Jackhammer / Motor Hammer Dark Bluish Gray Part 30228 Element 4261117 or 4211083 ×1
  • Tool Pickaxe Dark Bluish Gray Part 3841 Element 4211007 ×1

Pneumatics 2 pieces

  • Pneumatic T-Piece (T Bar) [New Style] Light Bluish Gray Part 4697b Element 4211508 1 spare in the box ×2

Technic Beams 2 pieces

  • Technic Beam 3 x 3 L-Shape with Quarter Ellipse Thin Black Part 32249 Element 6336619 or 4505842 ×1
  • Technic Beam 1 x 11 Thick Yellow Part 32525 Element 6028107 or 4534912 ×1

Technic Special 2 pieces

  • Technic Link 1 x 9 Bent (6 - 4) Dark Bluish Gray Part 64451 Element 6170705 or 4539297 ×2

Windscreens and Fuselage 2 pieces

  • Windscreen 1 x 6 x 3 Trans-Brown Part 64453 Element 6514290 or 6254637 ×1
  • Windscreen 3 x 4 x 4 Inverted Trans-Brown Part 4872 Element 4195864 ×1

Flags, Banners and Signs 1 piece

  • Road Sign Clip-on 2.2 x 2.667 Triangular Light Bluish Gray Part 30259 Element 4211886 ×1

Stickers 1 piece

  • Sticker Sheet for Set 4204-1 [No Color/Any Color] Part 10010493 Element 6004804 ×1

Technic Gears 1 piece

  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×1

Tools 1 piece

  • Brick and Axle Separator v2.0 Orange Part 96874 Element 6240515 or 4654448 ×1

Minifigures 4 figures

  • Miner, Dark Red Flannel Shirt, Mining Hat, Goatee Beard and Goggles Minifigure, checked as a whole figure ×1
  • Miner, Blue Overalls over White V-Necked Shirt, Mining Hat Minifigure, checked as a whole figure ×1
  • Miner, Dark Blue Shirt with Harness, Mining Hat, Sweat Drops Minifigure, checked as a whole figure ×1
  • Miner, White Shirt with Tie and Suspenders, Mining Hat, Mutton Chops and Moustache 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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