New Alternator for New Holland Case Tractors TM Series - 12V 115A

In this review the focus is a 100% new aftermarket alternator designed for a range of New Holland and Case tractors. The bottom line: this unit is for owners and service technicians who need a direct-fit replacement that mirrors OEM form and function, offering 12 volt, 115 amp output and clockwise rotation so electrical systems and charging performance remain consistent after installation. Our review highlights fitment coverage across TM and MXM/MXU series machines plus the practical one-year replacement warranty that reduces risk for installers.

Key Features

• 12 Volt, 115 Amp output: Provides the charging capacity required for medium-duty tractor electrical systems, maintaining battery charge under typical field loads.
• CW Rotation and S8 Pulley: Matches the original pulley and rotation direction on compatible tractors to ensure belt alignment and reliable drive engagement.
• Internal Regulator (IR): Simplifies installation by including the regulator, preventing the need to transfer parts from the old unit.
• IF Fan Type: Integrated fan design helps cool the alternator under continuous engine use common in agricultural work.
• Wide OEM Cross-Reference: Replaces numerous OEM numbers such as MG404, IA1020, and CASE 82014508, making it a likely direct swap for many TM, MXM and MXU models.
• One-year replacement warranty: Offers peace of mind after purchase, allowing for a replacement within one year if the unit fails to function as expected.

Who It's For

This alternator is aimed at owners and fleet mechanics of New Holland TM series and compatible Case tractors from the early to mid-2000s who need a like-for-like electrical replacement. If the machine requires a 12V charging source with clockwise rotation and an S8 pulley, this part is a practical, cost-effective aftermarket alternative to OEM units.

It is not aimed at tractors with differing pulley classes, rotation direction, or those needing a different amperage rating; buyers should verify the OEM cross-reference or original alternator label before purchase to confirm fitment. Those who require dealer-level new OEM boxes for warranty or resale paperwork should check manufacturer policy first.

Pros & Cons

Pros

• Direct replacement spec of 12V and 115A restores charging performance for compatible tractors.
• Internal regulator and matched fan type reduce installation complexity and avoid part swapping.
• Broad OEM compatibility covers many Case and New Holland part numbers, increasing the chance of a correct fit.

Cons

• Aftermarket product may differ cosmetically from the original and some buyers prefer factory-branded units for dealer tracking.
• Not suitable if the tractor requires a different pulley class, rotation, or amperage; fitment verification is required.

Specifications

Unit Type	Alternator
Voltage	12 V
Amperage	115 A
Rotation	CW
Pulley Class	S8
Regulator	Internal (IR)
Fan Type	IF (integrated fan)

Our Verdict

For owners of New Holland TM series and compatible Case tractors seeking a reliable, cost-effective replacement alternator, this unit delivers the correct electrical output, regulator integration, and pulley compatibility for a straightforward swap. The wide OEM cross-reference list and one-year replacement warranty make it a practical choice for repair shops and farmers who need dependable charging performance without the premium price of new OEM-labeled units.

Frequently Asked Questions

Will this alternator fit my TM135 or TM150?
It is listed as compatible with TM115 through TM155 models; confirm the OEM number on your original alternator or check pulley class and rotation before buying.

Does this alternator include the voltage regulator?
Yes, the unit includes an internal regulator (IR), so there is no need to transfer the regulator from the old alternator.

What warranty is provided?
The product carries a one-year replacement warranty from the date of order; contact the seller for replacement assistance if needed.