How many pieces are in the 4.5V Motor Set?

4.5V Motor Set contains 24 pieces.

When was the 4.5V Motor Set released?

4.5V Motor Set was released in 1968.

🏛 4.5V

Set #102

4.5V Motor Set

Before you buy

Who it's for: Beginner build Perfect for vintage LEGO historians, retro tech collectors, and classic train enthusiasts.
Build: 24 pieces · about 0.5 hours Build time is an estimate.
Price: $14.50 list price · 60.4¢ per piece
Availability: Likely retired

★★★★☆ 4.1 AI-generated review score, not a customer rating

Collectors treasure this set as a historic milestone in LEGO motorization, though modern builders may find the basic electrical components fragile and difficult to maintain.

$14.50

Best Price

$13.05

You Save

10% OFF

📝 Our Take

AI-assisted editorial summary, grounded in our LEGO database and public community discussions. How we use AI

4.5V Motor Set is a genuine piece of LEGO history that revolutionized the way fans brought their creations to life. Released in 1968, this pioneering electric motor set introduced motorized movement to the brick world, laying the foundational engineering for decades of motorized trains and Technic creations to come.

This set is perfect for vintage LEGO collectors and fans of retro mechanical engineering. While small by modern standards with just 24 pieces, it represents a monumental leap in mid-century toy design that offers a fascinating look at how LEGO evolved into a global powerhouse.

Skip this if you are looking for a modern, complex building experience or plug-and-play digital integration. At over fifty years old, finding working vintage electrical components requires patience, so modern builders might prefer a contemporary Powered Up or Technic set instead.

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How do I safely test the vintage 4.5V motor without damaging the wiring? What kind of batteries does the original blue battery box require? How does this 1968 motor compare to modern Powered Up systems? What are the best preservation practices for vintage LEGO electrical parts?

🧱 Building Experience

AI-assisted build estimate, grounded in our LEGO database and public community discussions. How we use AI

🧩

Pieces

⏱

0.5h

Estimated Build Time

📊

Beginner

Difficulty

Build Highlights:

Historic 4.5V blue motor housing with iconic printed branding
Classic battery box assembly powering early mechanical movement
Vintage train wheels with beveled treads and axle cams
Old-style smooth black tires and banana plug electric connectors

📈 Investment Analysis

AI-assisted investment analysis, grounded in our LEGO database and public community discussions. How we use AI

↑ Trending up since release

B+

Investment Grade

⏳ Retired

As a foundational piece of LEGO history from 1968, the 4.5V Motor Set carries strong nostalgic appeal for vintage collectors. With a rising price trend and a current secondary market value well above its original MSRP, scarce complete vintage electrical sets often attract dedicated hobbyists willing to pay a premium for functional pieces of the past. However, investing in vintage electronics comes with inherent risks. The functionality of the original battery box and motor heavily influences actual value, and brittle vintage plastic or corroded contacts can deter buyers. While historical demand supports steady appreciation, condition is everything when dealing with late-1960s components.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

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Compared to modern Power Functions or Powered Up sets, the 102-1 Motor Set is incredibly primitive, relying on simple wired battery connections rather than Bluetooth or smart hubs. It shares shelf space in vintage collections with other classic 4.5V train and town accessories from the late 1960s and early 1970s.

📦 Parts Inventory

Official piece count: 24
Parts cataloged in this inventory: 9 unique parts, 24 pieces

Missing a piece? Check this set piece by piece, with look-alike colors flagged and element IDs for replacements.

Tyre Smooth Old S...

Part #: 132a 4× Black

Plate Special 6 x...

Part #: 3058b 1× Light Gray

Tyre for Train Wh...

Part #: 458 4× Light Gray

Battery Box, 4.5V...

Part #: 468c01 1× Blue

Wheel Old with 4 ...

Part #: 7039b 4× Red

Wire 12V / 4.5V w...

Part #: 74503 1× White

Electric Connecto...

Part #: 996bc01 4× Blue

Motor, Train, 4.5...

Part #: upn0284c02pr0001 1× Blue

Train Wheel with ...

Part #: upn0384b 4× Red

The parts inventory is defined by vintage electrical components and specialized train wheels unique to the late 1960s 4.5V system. Finding these pieces in clean, working condition with unblemished wiring is becoming increasingly difficult for restorers.

🛒 Where to Buy

eBay

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Walmart

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$13.77

Target

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$14.50

💎 Notable Parts

Blue Motor, Train, 4.5V 12 x 4 x 4 Type I with '4.5V' Print (1x) $45.00

Blue Battery Box, 4.5V 7 x 11 x 3 Type 1 [Complete Assembly] (1x) $35.00

Red Train Wheel with 2 x 2 Stud Center, Beveled Tread and Cam Axle for Motor (4x) $20.00

Blue Electric Connector, 1 Way Male Rounded with Cross-Cut Pin (Banana Plug) (4x) $12.00

Est. BrickLink Part Value

$112.00

💡 MOC Potential

🚗 Motorizing classic 1960s LEGO town layouts and vintage locomotives

🏛 Displaying alongside a retro LEGO museum collection or mid-century diorama

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Inventory Statistics

Unique Parts

Official Piece Count

Cataloged Inventory Pieces

Minifigures

Inventory Version: 1

Missing a piece? Use the Missing Piece Checker.

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