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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.

Inter-City Passenger Train

Checking

7740 Inter-City Passenger Train

747 pieces in 104 part and color combinations, plus 10 minifigures.

LEGO counts 786 pieces. This inventory comes from a separate parts catalog and lists 787, including the 40 parts inside the minifigures; the two do not always count the same elements, so their totals differ. 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.

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Piece checklist

Bricks 176 pieces

  • Brick 1 x 2 Black Part 3004 Element 300426 ×36
  • Brick 1 x 4 Black Part 3010 Element 301026 ×6
  • Brick 1 x 6 Black Part 3009 Element 300926 ×16
  • Brick 1 x 8 Black Part 3008 Element 300826 ×7
  • Brick 2 x 2 without Inside Ridges Black Part 3003a ×8
  • Brick 2 x 4 Black Part 3001 Element 300126 ×4
  • Brick 1 x 4 Blue Part 3010 Element 301023 ×2
  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×3
  • Brick 1 x 3 Red Part 3622 Element 362221 ×12
  • Brick 1 x 4 Red Part 3010 Element 301021 ×12
  • Brick 1 x 6 Red Part 3009 Element 300921 ×8
  • Brick 1 x 8 Red Part 3008 Element 300821 ×10
  • Brick 2 x 4 Red Part 3001 Element 300121 ×2
  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×28
  • Brick 1 x 2 Yellow Part 3004 Element 4613966 or 300424 ×4
  • Brick 1 x 3 Yellow Part 3622 Element 362224 ×4
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×5
  • Brick 1 x 6 Yellow Part 3009 Element 300924 ×6
  • Brick 2 x 2 without Inside Ridges Yellow Part 3003a ×3

Plates 153 pieces

  • Plate 1 x 1 Black Part 3024 Element 302426 ×4
  • Plate 1 x 2 Black Part 3023 Element 302326 ×24
  • Plate 1 x 3 Black Part 3623 Element 362326 ×12
  • Plate 1 x 4 Black Part 3710 Element 371026 ×9
  • Plate 1 x 6 Black Part 3666 Element 366626 ×7
  • Plate 2 x 4 Black Part 3020 Element 302026 ×16
  • Plate 2 x 6 Black Part 3795 Element 379526 ×8
  • Plate 4 x 10 Black Part 3030 Element 303076 or 303026 ×2
  • Plate 4 x 12 Black Part 3029 Element 302926 ×2
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×2
  • Plate 4 x 6 Black Part 3032 Element 303226 ×1
  • Plate 4 x 4 Blue Part 3031 Element 4243815 or 303123 ×2
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×16
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×12
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×4
  • Plate 2 x 8 Light Gray Part 3034 Element 303402 ×1
  • Plate 4 x 6 Light Gray Part 3032 Element 303202 ×1
  • Plate 6 x 24 Light Gray Part 3026 Element 4114520 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×10
  • Plate 2 x 8 Red Part 3034 Element 303421 ×1
  • Plate 1 x 6 Yellow Part 3666 Element 366624 ×8
  • Plate 2 x 6 Yellow Part 3795 Element 379524 ×2
  • Plate 2 x 8 Yellow Part 3034 Element 303424 ×2
  • Plate 4 x 12 Yellow Part 3029 Element 302924 ×6

Transportation - Land 111 pieces

  • Train Buffer Beam Black Part 4022 Element 4109853 or 402276 ×6
  • Vehicle Base, Train 6 x 28 with Two 1 x 2 Openings [11 Round Holes Each End and 1 Round Hole at Center] Black Part 4093d ×3
  • Vehicle Track, Train, Sleeper Plate 2 x 8 with Cable Grooves Dark Gray Part 4166 Element 416627 ×44
  • Seat / Chair 2 x 2 Light Gray Part 4079 Element 407902 ×10
  • Steering Stand 1 x 2 with Black Steering Wheel Light Gray Part 3829c01 Element 9556 ×1
  • Vehicle Track, Train, Slotted Rail Curved Inside Light Gray Part 3230b ×16
  • Vehicle Track, Train, Slotted Rail Curved Outside Light Gray Part 3229b ×16
  • Vehicle Track, Train, Slotted Rail Straight Light Gray Part 3228b Element 322802 ×12
  • Seat / Chair 2 x 2 Red Part 4079 ×3

Bricks Sloped 91 pieces

  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×20
  • Brick Sloped 45° 2 x 2 with Computer Panel Print Blue Part 3039pr9994 ×2
  • Brick Sloped 45° 2 x 2 with Computer Screen Print Blue Part 3039pr0026 Element 4190885 ×2
  • Brick Sloped 33° 3 x 2 Light Gray Part 3298 Element 329802 ×10
  • Brick Sloped 33° 3 x 4 Light Gray Part 3297 Element 329702 ×26
  • Brick Sloped 45° 2 x 1 without Bottom Pin Light Gray Part 3040a ×4
  • Brick Sloped 45° 2 x 2 Light Gray Part 3039 Element 303902 ×4
  • Brick Sloped 45° 2 x 2 with Computer Panel Print Light Gray Part 3039pr9994 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Red Part 3660 Element 366021 ×6
  • Brick Sloped 33° 3 x 2 Yellow Part 3298 Element 329824 ×4
  • Brick Sloped 33° 3 x 3 Yellow Part 4161 Element 4222035 or 4161120 ×4
  • Brick Sloped 33° 3 x 3 Double Convex Yellow Part 3675 Element 6569573 or 4240121 ×4
  • Brick Sloped 45° 2 x 2 Yellow Part 3039 Element 303924 ×4

Windows and Doors 78 pieces

  • Window 1 x 2 x 2 Classic, Short Lip [with Glass] Light Gray Part 3081c01 ×10
  • Glass for Train Door Lip On Top and Bottom Trans-Clear Part 4183 Element 418340 ×12
  • Glass for Train Window 1 x 2 x 3 Trans-Clear Part 4036 Element 403640 ×2
  • Glass for Train Window 1 x 4 x 3 Trans-Clear Part 4034 Element 403440 ×18
  • Door 1 x 4 x 5 Train Left with Red Bottom Half Print Yellow Part 4181pr0002 ×6
  • Door 1 x 4 x 5 Train Right with Red Bottom Half Print Yellow Part 4182pr0002 ×6
  • Window 1 x 2 x 2 Classic, Short Lip [with Glass] Yellow Part 3081c01 Element 7028 ×4
  • Window 1 x 2 x 3 Train Yellow Part 4035 Element 403524 ×2
  • Window 1 x 4 x 3 Train with All Studs Hollow Yellow Part 4033 Element 4264949 or 4111855 ×18

Electronics 34 pieces

  • Motor, Train Base, 12V Modern Type I with 2 round contact holes Black Part 501a ×1
  • Train Track 12V Conducting Rail Curved [No Cable Connection Holes] Light Gray Part 3241b Element 73701 ×16
  • Train Track 12V Conducting Rail Straight Light Gray Part 3242 ×6
  • Wire with 1-Prong Connectors, 12V / 4.5V 28L Light Gray Part 765c28 ×2
  • Wire with 1-Prong Connectors, 12V / 4.5V 96L Light Gray Part 765c96 ×1
  • Light Prism Brick, Train, 1 x 6 Holder Red Part 4170 ×2
  • Light Prism, Train, 1 x 3 Trans-Clear Part 4171 ×4
  • Light Brick 2 x 2 Type 1 12V (Complete) White Part 266ac01 ×2

Plates Round Curved and Dishes 26 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×16
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Gray Part 4032a Element 403202 ×6
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 ×2

Tiles 20 pieces

  • Tile 2 x 2 with Groove Light Gray Part 3068b Element 306802 ×6
  • Tile 1 x 8 with Groove Yellow Part 4162 Element 6388482 or 4189400 ×14

Wheels and Tyres 19 pieces

  • Wheel Train for 12V Electric Motor Black Part 867 ×2
  • Wheels Train Spoked Small (23mm D.) and Black Brick, Modified 2 x 4 [Black] Black Part 4180c01 ×11
  • Tyre for Train Wheel for Electric Train Motor 12V Light Gray Part 458 ×6

Magnets and Holders 12 pieces

  • Magnet Cylindrical Black Part 73092 Element 73092 ×6
  • Train Coupling Black Part 4023 ×6

Plates Special 9 pieces

  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Light Gray Part 3794a Element 379402 ×8
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Light Gray Part 3839b Element 383902 ×1

Tiles Special 5 pieces

  • Tile Special 6 x 4 with Beveled Edges and 7mm Pin (Train Bogie Plate) Black Part 4092 ×5

Minifig Accessories 3 pieces

  • Equipment Signal Paddle Light Gray Part 3900 Element 4166550 ×1
  • Equipment Cup / Mug [Plain] White Part 3899 Element 4659665 or 4548546 ×2

Bricks Round and Cones 2 pieces

  • Brick Round 1 x 1 Solid Stud Black Part 3062a ×2

Bricks Special 2 pieces

  • Brick Special 2 x 6 x 2 Weight with Bottom Openings and Center Seams on Ends Red Part 73090a ×2

Supports, Girders and Cranes 2 pieces

  • Support Round 2 x 2 x 2 Stand with Blocked Center Hole Light Gray Part 3940a ×2

Windscreens and Fuselage 2 pieces

  • Windscreen 2 x 6 x 2, Wide Top Trans-Clear Part 4176 Element 4502193 or 4179426 ×2

Bars, Ladders and Fences 1 piece

  • Bar 1 x 4 x 2 with Studs Black Part 4083 Element 408326 ×1

Stickers 1 piece

  • Sticker Sheet for Set 7740-1 [No Color/Any Color] Part 191915 ×1

Minifigures 10 figures

  • Woman - Red Torso, Blue Legs, Black Tails Minifigure, checked as a whole figure ×2
  • Man - Black Torso, White Legs, Brown Hair Minifigure, checked as a whole figure ×1
  • Man - Blue Torso, Blue Legs, Brown Hair Minifigure, checked as a whole figure ×1
  • Man - Blue Torso, Red Legs, Black Hair Minifigure, checked as a whole figure ×1
  • Man - Red Torso, Black Legs, Black Hat Minifigure, checked as a whole figure ×1
  • Man - Blue Jacket, Blue Legs, Red Hat Minifigure, checked as a whole figure ×2
  • Woman - Blue Torso, Red Legs Minifigure, checked as a whole figure ×1
  • Chef - White Torso, Light Gray Legs (3626a Head) 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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