Skip to product information
Usually ships in 2–4 business days.
12V 40A Alternator forVolvo EC55 Yanmar 4TNE94-SM Engine Komatsu 4D94E 3D84 4D88
$225.99
Sale price
$225.99
Regular price
Available to Order
Designed for compatible Volvo, Yanmar, and Komatsu engines, this aftermarket alternator helps restore battery charging and electrical-system output.
Not sure which part fits your equipment?
Our Northline Parts team can help you find the right replacement. Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT | Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Product Overview
The alternator supplies electrical power while the engine is running and keeps the battery charged. Dim lights, a discharged battery, warning indicators, or low charging voltage may point to an alternator, belt, wiring, or battery problem.
The listed replacement number is 4TNE94-SM. Match the part number, voltage, amperage, pulley, mounting ears, connector, and terminal layout with the part currently installed.
Key Features & Performance
- Restores charging-system output
- Helps keep the battery charged during operation
- 12V design for compatible electrical systems
- Available in the voltage and amperage shown
Fitment & Compatibility
Compatible with select Volvo EC55 Yanmar Engine Komatsu 4D94E 3D84 4D88 applications. Serial-number breaks, production changes, or equipment options may affect the required part.
Technical Specifications
- Product Type: Alternator
- Compatible Brand: Volvo, Yanmar, Komatsu
- Part Number(s): 4TNE94-SM
- Voltage: 12V
Frequently Asked Questions
Q: What should I verify before replacing the alternator? A: Confirm charging-system voltage and inspect the battery, belt, wiring, grounds, pulley, and original alternator configuration.
Q: Is this an original OEM part? A: No. This is a quality aftermarket replacement designed for compatible applications.
Confirm the original part number and physical configuration before ordering, especially when multiple versions were used.