Locomotive Blue Bricks (3743-1) is a 9V LEGO set released in 2001 with 106 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 33 unique part types.
- → Browse the full parts inventory
- → 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
2001 (25 years ago — may be retired)
-
Catalog scale
106 parts listed · 33 inventory lines tracked
-
Minifigures
No minifigs in inventory (brick-only or Technic set)
-
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.)
~230 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.
Parts in this set
33 parts · updating…
-
Brick 1 x 106111 · ×2 · Blue -
Brick 1 x 23004 · ×4 · Black -
Brick 1 x 23004 · ×21 · Blue -
Brick 1 x 63009 · ×1 · Blue -
Brick 2 x 62456 · ×1 · Blue -
Brick Round 1 x 1 Open Stud3062b · ×2 · Dark Gray -
Brick Round 2 x 2 with Axle Hole3941 · ×1 · Black -
Brick Sloped 33° 3 x 43297 · ×4 · Black -
Brick Sloped 45° 2 x 1 with Bottom Pin3040b · ×6 · Blue -
Brick Sloped 45° 2 x 43037 · ×6 · Blue -
![Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]](https://cdn.rebrickable.com/media/parts/elements/366023.jpg)
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]3660 · ×4 · Blue -
Brick Special 1 x 1 with Handle2921 · ×12 · Blue -
![Dish 4 x 4 Inverted [Radar]](https://cdn.rebrickable.com/media/parts/elements/396026.jpg)
Dish 4 x 4 Inverted [Radar]3960 · ×1 · Black -
Equipment Weapon, Loudhailer / Speaker / Blaster / Space Gun4349 · ×1 · Black -
![Panel 1 x 2 x 3 [Hollow Studs]](https://cdn.rebrickable.com/media/parts/elements/236226.jpg)
Panel 1 x 2 x 3 [Hollow Studs]2362b · ×2 · Black -
![Panel 1 x 4 x 3 [Hollow Studs]](https://cdn.rebrickable.com/media/parts/elements/4105207.jpg)
Panel 1 x 4 x 3 [Hollow Studs]4215b · ×2 · Black -
Plate 1 x 23023 · ×2 · Blue -
Plate 1 x 33623 · ×2 · Blue -
Plate 2 x 43020 · ×1 · Blue -
Plate Round 1 x 1 with Solid Stud6141 · ×8 · Dark Gray -
Plate Round 1 x 1 with Solid Stud6141 · ×3 · Trans-Red -
Plate Round 1 x 1 with Solid Stud6141 · ×4 · Trans-Neon Green -
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)4032a · ×1 · Black -
![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 · ×2 · Black -
![Plate Special 1 x 2 Side Handle [Free Ends]](https://cdn.rebrickable.com/media/parts/elements/254026.jpg)
Plate Special 1 x 2 Side Handle [Free Ends]2540 · ×2 · Black -
Plate Special 1 x 2 with 1 Stud without Groove (Jumper)3794a · ×1 · Black -
Plate Special 1 x 2 with Ladder4175 · ×2 · Black -
Plate Special 1 x 8 with Door Rail4510 · ×2 · Black -
Technic Axle 3 with Stud6587 · ×1 · Dark Gray -
![Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin](https://cdn.rebrickable.com/media/parts/elements/4125562.jpg)
Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin32064a · ×1 · White -
Tile 2 x 2 with Groove3068b · ×1 · Black -
Tile Special 1 x 2 Grille with Bottom Groove2412b · ×1 · Black -
Tile Special 1 x 2 with Handle2432 · ×2 · Blue