Boost your tractor’s electrical reliability with the Massey Ferguson Alternator – 3933144M91, delivering 70 amps of consistent output to support your tractor’s ignition, lighting, and accessories. Ideal for tractors operating in demanding field and industrial conditions.
Designed to fit a wide range of Massey Ferguson tractors including the 200 Series (275, 290), 300 Series (375E, 390E), 500 Series (550–590), and 600 Series (675, 690, 698, 698T). It’s also compatible with 3000 and 3600 Series models, and industrial tractors like the 20F, 30B, and 50A. This alternator is part-dependent on serial number—please contact us with your tractor details to confirm fitment.
Manufactured for long-term durability, this alternator fits Perkins engine models AD3.152, AD4.203, A4.212, A4.236, and A4.248. With OE-level performance and robust internal components, it meets the electrical demands of both vintage and mid-range Massey Ferguson tractors.
The pulley is not included and must be purchased separately. Please confirm shaft diameter when ordering to ensure compatibility with your existing pulley system.
Key Features
✔️ 70 Amp output ideal for general tractor operations
✔️ Compatible with MF 200–600 Series & Perkins engines
✔️ Reliable performance in field or industrial settings
✔️ Fits 3.152, 4.203, 4.236 & 4.248 Perkins engine families
✔️ Pulley sold separately – check shaft size before purchase
🌟 Perfect for: Massey Ferguson field tractors, vintage restorations, and light industrial use