Large Locomotive (base unit without color trim elements)
3741-1
Released: 2001 · Parts: 91 · Theme: 9V
Large Locomotive (base unit without color trim elements) (3741-1) is a 9V LEGO set released in 2001 with 91 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing 9V sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 29 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
2001 (25 years ago — may be retired)
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Catalog scale
91 parts listed · 29 inventory lines tracked
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Minifigures
No minifigs in inventory (brick-only or Technic set)
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Build manual
Digital booklet available on this page — use it to verify bag contents
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Gray era
Pre-2004 set — may use old light/dark gray instead of bluish gray
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Shipping weight (est.)
~162 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
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Market value
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Building instructions
Official LEGO instructions — read on BrickID
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Parts in this set
29 parts · updating…
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![Bar 6.6L with Stop Ring [Umbrella Stand]](https://cdn.rebrickable.com/media/parts/elements/409526.jpg)
Bar 6.6L with Stop Ring [Umbrella Stand]4095 · ×2 · Black -
Brick 1 x 43010 · ×5 · Black -
Brick 1 x 63009 · ×1 · Black -
Brick 2 x 43001 · ×2 · Black -
Brick Arch 1 x 63455 · ×4 · Black -
Brick Round 2 x 2 Dome Top, Blocked Open Stud, Bottom Axle Holder30367b · ×2 · Black -
Brick Sloped 45° 2 x 1 with Bottom Pin3040b · ×2 · Black -
Brick Sloped 65° 2 x 2 x 2 Smooth without Bottom Tube3678a · ×6 · Black -
Brick Sloped Inverted 75° 2 x 1 x 32449 · ×2 · Black -
Brick Special 1 x 1 with Headlight4070 · ×4 · Black -
![Cone 1 x 1 [No Top Groove]](https://cdn.rebrickable.com/media/parts/elements/458924.jpg)
Cone 1 x 1 [No Top Groove]4589 · ×1 · Yellow -
Magnet Cylindrical73092 · ×2 · Black -
![Panel 1 x 2 x 1 [Square Corners]](https://cdn.rebrickable.com/media/parts/elements/486526.jpg)
Panel 1 x 2 x 1 [Square Corners]4865a · ×2 · Black -
Plate 1 x 23023 · ×1 · Black -
Plate 2 x 103832 · ×2 · Light Gray -
Plate 2 x 33021 · ×4 · Light Gray -
Plate 2 x 43020 · ×2 · Black -
Plate 2 x 63795 · ×8 · Light Gray -
Plate 4 x 43031 · ×2 · Light Gray -
![Plate Special 1 x 1 with Clip Horizontal [Thick U Clip]](https://cdn.rebrickable.com/media/parts/elements/601926.jpg)
Plate Special 1 x 1 with Clip Horizontal [Thick U Clip]6019 · ×4 · Black -
![Plate Special 1 x 2 with Bar Up [Horizontal Arm 6mm]](https://cdn.rebrickable.com/media/parts/elements/4597267.jpg)
Plate Special 1 x 2 with Bar Up [Horizontal Arm 6mm]4623 · ×1 · Black -
Plate Special 1 x 2 with Door Rail32028 · ×16 · Black -
Tile 1 x 4 with Groove2431 · ×1 · Black -
Tile Special 6 x 4 with Beveled Edges and 5mm Pin (Train Bogie Plate)4025 · ×2 · Black -
Train Buffer Beam4022 · ×2 · Black -
Train Coupling New2920 · ×2 · Black -
Vehicle Base, Train 6 x 24 with Two 1 x 2 Cutouts and 3 Round Holes Each End6584 · ×1 · Black -
![Wheel Holder, Train with Wheels [Complete Assembly]](https://cdn.rebrickable.com/media/parts/ldraw/0/2878c01.png)
Wheel Holder, Train with Wheels [Complete Assembly]2878c01 · ×4 · Black -
Window 1 x 2 x 2 Plane, Solid Studs2377 · ×4 · Black