RELIABILITY: 100% brand new unit manufactured with high-grade copper windings and durable rectifiers to meet or exceed OEM specifications.

Key Features

• ✔ Direct fit for Ford 40-series tractors
• ✔ Reliable Internal Regulator (IR)
• ✔ High-flow External Fan (EF) cooling
• ✔ Clockwise rotation (CW)
• ✔ Standard 1-groove pulley compatibility

Technical Specs

Voltage	12V
Amperage	55A
Regulator	Internal (IR)
Fan	External (EF)
Rotation	Clockwise (CW)
Terminal ID	B+ (M6), W

Make	Model/Series	Engine
Ford / New Holland	5640, 6640, 7740, 7840, 8240, 8340	Diesel
Ford / New Holland	3230, 3430, 3930, 4130, 4630, 4830, 5030	Diesel
Ford / New Holland	4330, 4430, 4835, 5635, 6635, 7635	Diesel

Is this a genuine original part?

This is a premium quality aftermarket replacement part, manufactured to meet or exceed original equipment (OE) standards for fitment and performance.

How do I know if it is compatible?

We recommend checking the SKU/MPN and Cross Reference list provided above. If your original part number matches any of these, it is a guaranteed fit.

What does IREF stand for in the product title?

IREF stands for Internal Regulator / External Fan. This means the voltage regulator is integrated into the alternator housing, while the cooling fan is mounted externally behind the pulley to pull air through the unit.