From the brand
Product description
Why Alternator Health Matters on GM Platforms
Once the engine is running, the alternator powers:
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Engine control modules and ignition
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Fuel system and sensors
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Power steering and safety systems
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Headlights, HVAC, and infotainment
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Charging and maintaining the battery
When alternator output drops, the battery is forced to carry the load — and batteries are not designed for that. The result:
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Repeated dead batteries
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Flickering or dim lights
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Charging system warning lights
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Electrical glitches and poor drivability
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No-start situations at the worst times
Replacing the alternator fixes the actual problem, not just the symptoms.
Compatible with Chevrolet Models:
- 2008-2008 Cobalt L4 2.4L
- 2008-2010 Cobalt L4 2.2L
- 2008-2012 Malibu L4 2.4L (Not Fit ELECTRIC/GAS)
Compatible with Pontiac Models:
- 2008-2010 G5
Compatible with Saturn Models:
- 2008-2008 Sky L4 2.4L
- 2008-2009 Aura L4 2.4L (Not Fit ELECTRIC/GAS)
- 2008-2010 Vue L4 2.4L (Not Fit ELECTRIC/GAS)
Specifications:
- Amperage: 130A
- Voltage: 12V
- Rotation: Clockwise
- Number of Grooves: 5-Groove Pulley
- OE Number: 11265N, 11265, 15828450, FG12S010SP, FG12S010, GMT319, GMX001, GMX384, GMX386
Why 125 Amps Is the Correct Output
These GM platforms were engineered around a 125-amp charging system to support growing electrical demand. This alternator delivers:
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Stable voltage at idle and cruising speeds
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Proper battery recharge after cold starts
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Consistent output with accessories running
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Reduced strain on wiring and electrical components
It’s the right balance — not underpowered, not excessive.
Built for OE Fitment and Long-Term Reliability
This A-Premium alternator features:
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High-efficiency copper windings
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Internal voltage regulator for consistent output
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Precision-balanced internals for smooth operation
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OE-style mounting points and electrical connectors
Installation is straightforward and bolt-on. No wiring mods, no bracket drama, no surprises.
Why Buy from Pro Street Online?
At Pro Street Online, we sell parts that fix problems the first time. This alternator is:
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Vehicle-specific
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Properly rated
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Designed to meet factory electrical requirements
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Ideal for daily drivers and long-term ownership
If your Malibu, Cobalt, G5, or Saturn is still serving you well, this alternator keeps it that way.
Jimmy Flores –
Functions and fits as it should, doesn’t make any audible noise.As for construction of materials/Durability its as good as OEMSkipped the core deposit the parts store wants and it shipped to my door for free, also the parts store wants about $300 + Core this was $140 shipped to meI’ll update if it fails prematurely
Alfredo Hernandez –
Fit like it was supposed too and hasn’t given me a single problem
amanda bloxom –
I was sceptical since O’Reilly and Auto Zone price is 280-300 bucks but this one is a perfect replacement and fits and works just like OEM!! Save your cash and buy it here!
Ashley Spencer –
I was nervous but it works great
Amazon Customer –
Item was a correct but poor packaging caused damage,Price is great
Eduardo ceballos –
Good quality
Nikki –
After a year buying this we had to buy another one
Amazon Customer –
Needed alternator, unfortunately part of the black plastic shroud was cracked, needed it fast so I can drive to work so I installed anyway works great but was still disappointed with what I would assume was a shipping issue since I have been generally satisfied with the company’s products
Clayton Kravik –
Not much room to change it
It was yery good
louis-georges morissette –
qualite prix service
super fonctionne tres bien merci