Alternator Compatible with Subaru Impreza 2004–2010 – Full Guide for Replacement, Fitment & Best Prices in Nairobi

If you drive a 2004–2010 Subaru Impreza, the alternator is one of the most critical parts of your vehicle’s electrical system. It powers the electronics while the engine runs and ensures your battery stays charged at all times. A failing alternator can leave you stranded with a dead battery, electrical glitches, or worse — engine stalling in traffic.

At Natial Drive, Nairobi’s leading Subaru parts dealer, we stock top-grade alternators for all 2004 to 2010 Subaru Impreza models, including naturally aspirated (NA) and turbocharged (WRX/STI) variants. Whether you need a brand new, high-output, or tested JDM unit, we’ve got you covered.

Why the Alternator Is Vital in Your 2004–2010 Subaru Impreza

Your alternator converts mechanical energy from the engine into electrical power. This electricity charges the battery and runs essential systems like the ECU, headlights, radio, AC, and dashboard instruments.

If the alternator fails, your car will rely entirely on the battery — which will soon drain, leaving you stranded.

Symptoms of a Bad Alternator in the Subaru Impreza (2004–2010)

Detecting alternator issues early can save your engine and electrical system from costly damage.

 Common Warning Signs:

• Dim or flickering headlights

• Battery warning light on the dashboard

• Radio or electrical system failures

• Stalling engine or rough idling

• Burning smell or whining noise under the hood

• Dead battery after short drives

If you notice any of these issues, it’s time for a charging system diagnostic and alternator replacement.

Alternator Specifications by Subaru Impreza Model Year

Different engine types and trims within the 2004–2010 Impreza generation require slightly different alternators. Here’s what you need to know:

WRX and STI trims may require higher-output alternators, especially if aftermarket electronics or audio upgrades are installed.

Why Choose Natial Drive for Subaru Impreza Alternator Replacement?

We are Subaru experts based in Nairobi, focused exclusively on Subaru performance and reliability. Our inventory includes genuine, used, and performance parts tailored to your model’s exact needs.

 Why Nairobi Subaru Owners Trust Us:

• Specialized in Subaru-only parts

• Deep stock of Impreza alternators – all years

• Same-day pickup or delivery within Nairobi

• Affordable prices + professional installation

• Full compatibility support and fitting advice

Alternator Fitment Tips for DIY Enthusiasts

If you prefer to handle the replacement yourself:

• Always disconnect the battery negative terminal before replacing

• Inspect and clean electrical connectors and harnesses

• Check the serpentine belt for wear or cracks

• Use a voltmeter after installation – output should be around 13.5V to 14.5V

Need assistance or installation tools? Visit our Natial Drive garage for accessories, belts, and expert help.