VW Alternator / Generator Pulley with Built-In Cooling Fan | 040903109 | Black | Classic Beetle / Ghia / Bus | OEM Style

Ensure your Volkswagen’s alternator or generator stays cool and efficient with this VW Alternator/Generator Pulley with Cooling Fan (040903109). This OEM-style replacement pulley includes integrated fan blades that help maintain airflow around the alternator or generator, reducing heat buildup during extended driving or high RPM conditions.

Perfect for air-cooled VW engines, this pulley is finished in black for a clean, classic look and built to meet or exceed OEM specs. Whether you’re restoring a classic Beetle or maintaining your vintage Bus, this part delivers reliable performance and vintage-correct aesthetics.

🔩 Product Details:

Part Number: 040903109

Construction: Stamped steel

Finish: Black enamel

Built-in fan fins to assist cooling

Includes outer and inner pulley halves

Washer and nut not included (sold separately)

Application: Alternator or Generator drive

📦 Compatible With:

VW Beetle (1946–1977, 12V conversion)

VW Karmann Ghia (1956–1974)

VW Type 2 Bus (1950–1971)

VW Type 3 (Notchback, Squareback, Fastback)

VW Thing (1973–1974)

Engines with upright alternator or generator

Fits 12-volt systems (may also fit some 6V setups)

⚠️ Installation Notes:

Verify alternator or generator shaft size before installation

Use with standard or heavy-duty generator/alternator stands

Torque properly and ensure correct belt tension after install

💯 Why Buy from Kairous Inc?

Authentic OEM & OEM-Style VW Components

Fast & Free U.S. Shipping

270-Day Warranty Against Manufacturing Defects

Trusted by VW Restoration Experts Nationwide

Dedicated VW Parts Support Team

🛒 Restore your engine’s cooling performance and reliability with the VW Alternator Pulley with Fan from Kairous Inc — where OEM quality meets classic VW passion.

Fits:

• VW Beetle: 1967 – 1979
• VW Bus: 1967 – 1971
• VW Karmann Ghia: 1967 – 1974
• VW Thing: 1973 – 1974

Alternator/Generator Pulley, with Cooling Fan, 040903109. 

(fitment years are merely suggestive, as modifications and specific vehicle models may or may not be different, if you have any questions regarding fitment, send us an email at: info@kairousinc.com)