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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.

Push-Along Passenger Steam Train

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7715 Push-Along Passenger Steam Train

430 pieces in 84 part and color combinations, plus 5 minifigures.

LEGO counts 449 pieces. This inventory comes from a separate parts catalog and lists 450, including the 20 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 114 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×14
  • Brick 1 x 2 Black Part 3004 Element 300426 ×41
  • Brick 1 x 4 Black Part 3010 Element 301026 ×6
  • Brick 1 x 6 Black Part 3009 Element 300926 ×4
  • Brick 2 x 2 Black Part 3003 Element 4103587 or 300326 ×4
  • Brick 2 x 3 Black Part 3002 Element 300226 ×9
  • Brick 2 x 4 Black Part 3001 Element 300126 ×1
  • Brick 1 x 3 Blue Part 3622 Element 362223 ×8
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×12
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×8
  • Brick 1 x 4 Red Part 3010 Element 301021 ×2
  • Brick 2 x 10 Red Part 3006 Element 4617857 or 300621 ×2
  • Brick 1 x 4 White Part 3010 Element 6550135 or 301001 ×3

Transportation - Land 75 pieces

  • Vehicle Track, Train, Sleeper Plate 2 x 8 with Cable Grooves Dark Gray Part 4166 Element 416627 ×32
  • Vehicle Track, Train, Slotted Rail Curved Inside Light Gray Part 3230b ×16
  • Vehicle Track, Train, Slotted Rail Curved Outside Light Gray Part 3229b ×16
  • Train Buffer Beam Red Part 4022 Element 402271 ×4
  • Train, Steam Engine Cylinder, 1 x 2 Studs, Round Surfaces, Interior Grooves Red Part upn0256b ×2
  • Vehicle Base, Train 6 x 16 Red Part 4178 ×1
  • Seat / Chair 2 x 2 Yellow Part 4079 ×4

Bricks Sloped 69 pieces

  • Brick Sloped 33° 3 x 2 Black Part 3298 Element 329826 ×2
  • Brick Sloped 33° 6 x 6 Double (Train Roof) Black Part 4509 Element 4107859 ×1
  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×3
  • Brick Sloped 45° 2 x 2 with 3 Gauges and 3 Knobs Print Black Part 3039pr9970 Element 4251812 or 4163777 ×1
  • Brick Sloped 45° 2 x 3 Black Part 3038 Element 303826 ×6
  • Brick Sloped Inverted 45° 2 x 1 Black Part 3665 Element 366526 ×20
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×8
  • Brick Sloped 33° 3 x 2 Light Gray Part 3298 Element 329802 ×8
  • Brick Sloped 33° 6 x 6 Double (Train Roof) Light Gray Part 4509 Element 4201555 or 450902 ×4
  • Brick Sloped 45° 2 x 1 with Bottom Pin Red Part 3040b Element 4121934 or 304021 ×2
  • Brick Sloped Inverted 45° 2 x 1 Red Part 3665 Element 366521 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Red Part 3660 Element 366021 ×10

Plates 61 pieces

  • Plate 1 x 1 Black Part 3024 Element 302426 ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 ×6
  • Plate 1 x 4 Black Part 3710 Element 371026 ×8
  • Plate 1 x 6 Black Part 3666 Element 366626 ×3
  • Plate 2 x 10 Black Part 3832 Element 383226 ×2
  • Plate 2 x 2 Black Part 3022 Element 302226 ×4
  • Plate 2 x 4 Black Part 3020 Element 302026 ×6
  • Plate 2 x 6 Black Part 3795 Element 379526 ×7
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×2
  • Plate 6 x 16 Black Part 3027 Element 302726 ×2
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×1
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×1
  • Plate 6 x 12 Light Gray Part 3028 Element 302802 ×1
  • Plate 1 x 2 Red Part 3023 Element 302321 ×2
  • Plate 1 x 4 Red Part 3710 Element 371021 ×5
  • Plate 1 x 6 Red Part 3666 Element 366621 ×8
  • Plate 2 x 4 Red Part 3020 Element 302021 ×1

Windows and Doors 50 pieces

  • Door 1 x 4 x 5 Train Left Black Part 4181 Element 6192824 or 4111856 ×1
  • Door 1 x 4 x 5 Train Right Black Part 4182 Element 6192825 or 6040299 ×1
  • Window 1 x 2 x 2 Shutter Black Part 3582 ×2
  • Window 1 x 2 x 3 Train Black Part 4035 Element 6016824 or 4108109 ×6
  • Door 1 x 4 x 5 Train Left with Blue Bottom Half Print Red Part 4181pr0005 ×2
  • Door 1 x 4 x 5 Train Right with Blue Bottom Half Print Red Part 4182pr0005 ×2
  • Window 1 x 2 x 3 Train Red Part 4035 Element 4114302 ×4
  • Window 1 x 4 x 3 Train with All Studs Hollow Red Part 4033 Element 4100371 ×8
  • Glass for Train Door Lip On Top and Bottom Trans-Clear Part 4183 Element 418340 ×6
  • Glass for Train Window 1 x 2 x 3 Trans-Clear Part 4036 Element 403640 ×10
  • Glass for Train Window 1 x 4 x 3 Trans-Clear Part 4034 Element 403440 ×8

Magnets and Holders 12 pieces

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

Tiles 12 pieces

  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×1
  • Tile 1 x 2 with Groove Light Gray Part 3069b Element 306902 ×4
  • Tile 2 x 2 with Groove Light Gray Part 3068b Element 306802 ×4
  • Tile 1 x 1 with Groove White Part 3070b Element 6550138 or 307001 ×3

Wheels and Tyres 7 pieces

  • Wheels Train Spoked Small (23mm D.) and Black Brick, Modified 2 x 4 [Red] Red Part 4180c04 ×7

Bricks Special 6 pieces

  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×2
  • Brick Special 1 x 1 x 2 with Shutter Holder Black Part 3581 Element 4541684 or 4264751 ×2
  • Brick Special 1 x 1 with Headlight Red Part 4070 Element 407021 ×2

Plates Round Curved and Dishes 6 pieces

  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Red Part 4032a Element 403221 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Clear Part 6141 Element 6514052 or 6240030 ×3
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 ×2

Bars, Ladders and Fences 5 pieces

  • Bar 1 x 4 x 2 with Studs Black Part 4083 Element 408326 ×1
  • Fence Lattice 1 x 4 x 1 Yellow Part 3633 Element 4190509 or 363324 ×4

Minifig Accessories 4 pieces

  • Bag / Briefcase Brown Part 4449 Element 4154856 or 444925 ×2
  • Equipment Signal Paddle Light Gray Part 3900 Element 4166550 ×1
  • Bag / Briefcase White Part 4449 Element 4154858 or 444901 ×1

Bricks Round and Cones 3 pieces

  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×3

Plates Special 3 pieces

  • Bracket 2 x 2 - 2 x 2 Black Part 3956 Element 6254808 or 6019217 ×1
  • Plate Special 1 x 2 with Ladder Red Part 4175 Element 6285246 or 6179575 ×2

Gear Parts 1 piece

  • Activity Card, Train Track Layout Template 1:13 Scale for 4.5V & 12V, 159mm x 134mm, with Lego logo [No Color/Any Color] Part 196926 ×1

Stickers 1 piece

  • Sticker Sheet for Set 7715-1 [No Color/Any Color] Part 196925 ×1

Tiles Round and Curved 1 piece

  • Tile Round 2 x 2 with Bottom Cross Black Part 4150 Element 415076 or 415026 ×1

Minifigures 5 figures

  • Man - Blue Jacket, Blue Legs, Red Hat Minifigure, checked as a whole figure ×1
  • Man - Blue Jacket, Blue Legs, Red Hat Minifigure, checked as a whole figure ×1
  • Woman - White Torso, Red Legs Minifigure, checked as a whole figure ×1
  • Man - Black Torso, Blue Legs, Brown Hair Minifigure, checked as a whole figure ×1
  • Man - Blue Torso, Light grey Legs, Black Hair 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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