13939 Car Alternator Fit for Nissan Altima Sentra 2002-2006 - 110A

In this review of the 13939 alternator from Farrme, the bottom line is simple: this is a direct, high-output replacement for Nissan Altima and Sentra 2.5L engines that prioritizes fit and durability. The reviewer found it best for owners who need a reliable, OEM-style replacement with 110A output and a 6-groove pulley, and appreciated that Farrme claims full testing to OEM specs. For anyone replacing a worn or failed alternator on a 2002-2006 Altima or Sentra, this unit offers clear compatibility and straightforward specifications.

Key Features

• Direct replacement: The alternator matches the listed OEM part numbers so it installs as a direct swap for the original unit.
• 110A output: A 110 amp rating provides stable charging capacity for stock electrical loads and accessories.
• 6-groove pulley: The 6-groove pulley and 56mm outside diameter match belt drive requirements to maintain proper belt alignment and tension.
• Internal regulator and fan: Built-in regulator and internal fan reduce the number of external parts to manage during installation and service.
• Durable construction: Die-cast aluminum housing and copper windings aim to resist heat, vibration, and corrosion for longer service life.
• OEM-level testing: Each alternator is tested to meet OEM specifications, which helps ensure consistent charging performance out of the box.

Who It's For

This alternator is aimed at owners of Nissan Altima and Sentra models from 2002 to 2006 with the 2.5L L4 engine who need a reliable, like-for-like replacement. It suits DIY mechanics comfortable checking part numbers and ensuring the pulley, rotation, and electrical connections match their vehicle before installation.

It is less appropriate for vehicles with modified charging systems, high-demand aftermarket audio or power accessories beyond typical loads, or owners who need a custom-fit high-output performance alternator beyond the stated 110A specification. Professional installation is recommended for those uncertain about wiring or charging diagnostics.

Pros & Cons

Pros

• Direct-fit interchangeability with multiple OEM part numbers simplifies replacement.
• 110A rating delivers consistent charging for stock electrical systems.
• Robust materials and CNC precision castings give confidence in durability.
• Internal regulator and fan reduce external complexity during installation.

Cons

• Not intended for heavily modified vehicles that require higher output than 110A.
• Proper installation and wiring checks are essential; incorrect installation can cause charging issues.

Specifications

Amperage	110A
Voltage	12V
Rotation	CW (Clockwise)
Number of grooves	6-Groove Pulley
Outside pulley diameter	56mm (2-3/16in)
Fan type	Internal
Regulator	Internal

Our Verdict

The Farrme 13939 alternator is a sensible, value-focused replacement for 2002-2006 Nissan Altima and Sentra 2.5L owners who need OEM-style fit and reliable 110A charging. With robust construction, internal regulator, and confirmed fitment to multiple part numbers, it is a practical choice for standard repairs when installed and checked by a capable technician.

Frequently Asked Questions

Will this alternator fit my 2004 Altima 2.5L?
Yes, the 13939 is listed as compatible with Altima and Sentra 2002-2006 2.5L engines; verify your OEM part number and pulley details before ordering.

Does this unit include the voltage regulator?
Yes, the alternator uses an internal regulator as specified in the product details.

What should I check if the alternator does not charge after installation?
Check installation wiring, connector engagement, belt tension, and battery condition, and have the system inspected by a qualified technician.