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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

Checking

7710 Push-Along Passenger Steam Train

413 pieces in 77 part and color combinations, plus 5 minifigures.

LEGO counts 447 pieces. This inventory comes from a separate parts catalog and lists 433, 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

Black 194 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×6
  • Brick 1 x 2 Black Part 3004 Element 300426 ×6
  • Brick 1 x 3 Black Part 3622 Element 362226 ×4
  • Brick 1 x 4 Black Part 3010 Element 301026 ×12
  • Brick 1 x 6 Black Part 3009 Element 300926 ×15
  • Brick 2 x 2 without Inside Ridges Black Part 3003a ×1
  • Brick 2 x 4 without Cross Supports Black Part 3001a ×13
  • Brick Round 1 x 1 Solid Stud Black Part 3062a ×2
  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×2
  • Brick Sloped 33° 3 x 3 Black Part 4161 Element 416126 ×4
  • Brick Sloped 45° 2 x 1 with Bottom Pin Black Part 3040b Element 4121966 or 304026 ×4
  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×3
  • Brick Sloped 45° 2 x 3 Black Part 3038 Element 303826 ×2
  • Brick Sloped 45° 2 x 4 Black Part 3037 Element 303726 ×4
  • Brick Sloped Inverted 45° 2 x 1 Black Part 3665 Element 366526 ×18
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×10
  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×2
  • Magnet Cylindrical Black Part 73092 Element 73092 ×6
  • Plate 1 x 1 Black Part 3024 Element 302426 ×6
  • Plate 1 x 2 Black Part 3023 Element 302326 ×4
  • Plate 1 x 3 Black Part 3623 Element 362326 ×4
  • Plate 1 x 4 Black Part 3710 Element 371026 ×7
  • Plate 1 x 6 Black Part 3666 Element 366626 ×4
  • Plate 1 x 8 Black Part 3460 Element 346026 ×2
  • 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 ×5
  • Plate 2 x 6 Black Part 3795 Element 379526 ×4
  • Plate 2 x 8 Black Part 3034 Element 303426 ×1
  • Plate 4 x 4 Black Part 3031 Element 4243819 or 303126 ×2
  • Plate 4 x 6 Black Part 3032 Element 303226 ×1
  • Plate 6 x 16 Black Part 3027 Element 302726 ×2
  • Plate 6 x 6 Black Part 3958 Element 395826 ×1
  • Plate 6 x 8 Black Part 3036 Element 303676 or 303626 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×16
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Black Part 3794a ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Black Part 3700 Element 370026 ×1
  • Train Buffer Beam Black Part 4022 Element 4109853 or 402276 ×4
  • Train Coupling Black Part 4023 ×6
  • Vehicle Base, Train 6 x 16 Black Part 4178 ×1

Light Gray 66 pieces

  • Brick Sloped 33° 3 x 4 Light Gray Part 3297 Element 329702 ×16
  • Equipment Signal Paddle Light Gray Part 3900 Element 4166550 ×1
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×4
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×4
  • Plate 4 x 12 Light Gray Part 3029 Element 302902 ×2
  • Plate 6 x 12 Light Gray Part 3028 Element 302802 ×1
  • Tile 2 x 2 with Groove Light Gray Part 3068b Element 306802 ×6
  • Vehicle Track, Train, Slotted Rail Curved Inside Light Gray Part 3230b ×16
  • Vehicle Track, Train, Slotted Rail Curved Outside Light Gray Part 3229b ×16

Blue 44 pieces

  • Brick 1 x 1 Blue Part 3005 Element 300523 ×16
  • Brick 1 x 6 Blue Part 3009 Element 300923 ×4
  • Door 1 x 4 x 5 Train Left with Yellow Bottom Half Print Blue Part 4181pr0001 ×2
  • Door 1 x 4 x 5 Train Right with Yellow Bottom Half Print Blue Part 4182pr0001 ×2
  • Tile 1 x 8 with Groove Blue Part 4162 Element 416223 ×8
  • Window 1 x 2 x 3 Train Blue Part 4035 Element 4185815 or 4108108 ×4
  • Window 1 x 4 x 3 Train with All Studs Hollow Blue Part 4033 Element 4141273 ×8

Dark Gray 32 pieces

  • Train Track Sleeper Plate 2 x 8 without Cable Grooves Dark Gray Part 767 ×32

Yellow 32 pieces

  • Brick 1 x 1 Yellow Part 3005 Element 300524 ×4
  • Brick 1 x 3 Yellow Part 3622 Element 362224 ×4
  • Brick 1 x 4 Yellow Part 3010 Element 301024 ×4
  • Brick 1 x 6 Yellow Part 3009 Element 300924 ×8
  • Brick 1 x 8 Yellow Part 3008 Element 300824 ×4
  • Seat / Chair 2 x 2 Yellow Part 4079 ×8

Red 25 pieces

  • Brick 1 x 4 Red Part 3010 Element 301021 ×4
  • Brick 2 x 10 Red Part 3006 Element 4617857 or 300621 ×2
  • Plate 1 x 2 Red Part 3023 Element 302321 ×4
  • Plate 1 x 6 Red Part 3666 Element 366621 ×1
  • Plate 2 x 8 Red Part 3034 Element 303421 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Red Part 4032a Element 403221 ×1
  • Plate Special 1 x 2 with Ladder Red Part 4175 Element 6285246 or 6179575 ×2
  • Seat / Chair 2 x 2 Red Part 4079 ×3
  • Wheels Train Spoked Small (23mm D.) and Black Brick, Modified 2 x 4 [Red] Red Part 4180c04 ×7

Trans-Clear 16 pieces

  • Glass for Train Door Lip On Top and Bottom Trans-Clear Part 4183 Element 418340 ×4
  • Glass for Train Window 1 x 2 x 3 Trans-Clear Part 4036 Element 403640 ×4
  • Glass for Train Window 1 x 4 x 3 Trans-Clear Part 4034 Element 403440 ×8

Trans-Yellow 3 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 ×3

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 7710-1 [No Color/Any Color] Part 191885 ×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
  • Man - Red Torso, Black Legs Brown Hair Minifigure, checked as a whole figure ×1
  • Woman - Red Torso, Blue Legs, Black Tails Minifigure, checked as a whole figure ×1
  • Man - White Torso, Red Legs, Red Hat 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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