Steam Engine (7750-1) is a 12V LEGO set released in 1980 with 268 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing 12V sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 2 minifigures and 90 unique part types.
- → Browse the full parts inventory
- → See every minifigure included in the set
- → Verify loose bricks with our free part scanner
- → Check market value for parts and minifigs
Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
-
Release year
1980 (46 years ago — may be retired)
-
Catalog scale
268 parts listed · 90 inventory lines tracked
-
Minifigures
2 in this set's inventory — verify completeness when buying used
-
Build manual
No digital manual in our catalog — check the box tab or LEGO.com
-
Gray era
Pre-2004 set — may use old light/dark gray instead of bluish gray
-
Shipping weight (est.)
~510 g for parts inventory (excludes box/minifig packaging)
-
Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
Related sets in this theme
Market value
No estimate on BrickID yet
We don't pull live prices from marketplaces automatically — that requires paid seller API access. Check live listings below, or be the first to share a price you paid or saw.
Check live listings →Share a price you paid or saw
Help other collectors — we aggregate anonymous reports on this page.
Minifigures in Steam Engine
Parts in this set
90 parts · page 1 of 2 · updating…
-
Brick 1 x 13005 · ×6 · Black -
Brick 1 x 23004 · ×14 · Black -
Brick 1 x 33622 · ×2 · Red -
Brick 1 x 33622 · ×2 · Black -
Brick 1 x 43010 · ×4 · Black -
Brick 1 x 43010 · ×6 · Red -
Brick 1 x 63009 · ×8 · Black -
Brick 1 x 83008 · ×6 · Black -
Brick 1 x 83008 · ×2 · Red -
Brick 2 x 2 without Inside Ridges3003a · ×1 · Black -
Brick 2 x 4 without Cross Supports3001a · ×1 · Black -
Brick 2 x 4 without Cross Supports3001a · ×4 · Red -
Brick Round 1 x 1 Solid Stud3062a · ×1 · Black -
Brick Round 1 x 1 Solid Stud3062a · ×2 · Red -
Brick Round 2 x 2 with Axle Hole3941 · ×3 · Black -
Brick Round Corner 2 x 2 Macaroni with Stud Notch3063b · ×2 · Red -
Brick Sloped 33° 3 x 43297 · ×4 · Black -
Brick Sloped 45° 2 x 1 with Bottom Pin3040b · ×2 · Black -
Brick Sloped 45° 2 x 23039 · ×5 · Black -
Brick Sloped 45° 2 x 43037 · ×6 · Black -
Brick Sloped Inverted 45° 2 x 13665 · ×2 · Black -
![Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]](https://cdn.rebrickable.com/media/parts/elements/366026.jpg)
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]3660 · ×2 · Black -
![Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]](https://cdn.rebrickable.com/media/parts/elements/366021.jpg)
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]3660 · ×2 · Red -
Brick Special 1 x 2 with Cable Holding Square Cutout3134 · ×2 · Black -
Brick Special 2 x 6 x 2 Weight with Bottom Openings and Center Seams on Ends73090a · ×2 · Black -
Door 1 x 4 x 5 Train Left4181 · ×1 · Black -
Door 1 x 4 x 5 Train Right4182 · ×1 · Black -
![Equipment Shovel [Rounded Handle End]](https://cdn.rebrickable.com/media/parts/elements/383727.jpg)
Equipment Shovel [Rounded Handle End]3837 · ×1 · Dark Gray -
Glass for Train Door Lip On Top and Bottom4183 · ×2 · Trans-Clear -
![Hinge Brick 1 x 4 [Lower]](https://cdn.rebrickable.com/media/parts/elements/383126.jpg)
Hinge Brick 1 x 4 [Lower]3831 · ×1 · Black -
![Hinge Brick 1 x 4 [Upper]](https://cdn.rebrickable.com/media/parts/elements/383026.jpg)
Hinge Brick 1 x 4 [Upper]3830 · ×1 · Black -
Hose, Classic 4mm D. 12Lupn0258c12 · ×4 · Black -
Light Brick 2 x 2 Type 1 12V (Complete)266ac01 · ×2 · White -
Light Prism Brick, Train, 1 x 6 Holder4170 · ×2 · Black -
Light Prism, Train, 1 x 34171 · ×4 · Trans-Clear -
Magnet Cylindrical73092 · ×4 · Black -
Motor, Train Base, 12V Modern Type I with 2 round contact holes501a · ×1 · Red -
Plate 1 x 13024 · ×2 · Black -
Plate 1 x 23023 · ×3 · Black -
Plate 1 x 23023 · ×2 · Red -
Plate 1 x 33623 · ×4 · Black -
Plate 1 x 43710 · ×4 · Red -
Plate 1 x 43710 · ×3 · Black -
Plate 1 x 63666 · ×2 · Black -
Plate 1 x 63666 · ×3 · Red -
Plate 2 x 23022 · ×4 · Black -
Plate 2 x 23022 · ×4 · Red -
Plate 2 x 33021 · ×3 · Black