From the brand
Product description
Why Alternator Health Matters on GM Trucks
Once the engine is running, the alternator becomes the primary electrical power source for:
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Engine management and ignition
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Transmission and ABS modules
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Cooling fans and HVAC blowers
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Exterior lighting and towing electronics
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Charging and maintaining the battery
When alternator output drops, the battery tries to compensate—briefly—and then fails early. Symptoms usually include flickering lights, repeated dead batteries, charging warnings, and random electrical issues. Replacing the alternator fixes the root cause, not the symptom.
Correct 105-Amp Output — Built the GM Way
GM engineered these platforms around a 105-amp charging system for durability and long service life. This alternator provides:
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Stable voltage at idle
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Consistent output under load
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Proper battery recharge after starts
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Reduced stress on wiring and control modules
Not oversized. Not underpowered. Exactly what these engines expect.
Reference Number to Below:
- 8247, 8273, 8291, 8247N, 1-2320-21DR
- 321-1798, 334-2491, 10464438, 10464451
- ADR0215, 400-12139, ALT-1509, 90-01-4705N
- 10464438, 10464481, 10464451, 10464455, 10480476
- 10480388, 15768829, 19244727, 19244731, 19244728
Advantage of A-Premium Alternator:
- 100% Performance Testing
- 100% New Premium Component
- Meet or Exceed OEM Specifications
Specifications
- Amperage: 105A
- Voltage: 12V
- Rotation: Clockwise
- Pulley Class: 6 Grooves
- Plug Clock: 4:00
- Fan Type: Internal
- Regulator Type: Internal
- Manufacturer Series: Delco AD230
Brand-New Construction for Long-Term Reliability
The A-Premium alternator features:
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New high-efficiency copper windings
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Internal voltage regulation for clean output
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Precision-balanced rotor and quality bearings
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OE-style mounting points and connectors
No reman internals. No mystery wear. Built for trucks that actually work.
Why Buy from Pro Street Online?
At Pro Street Online, we sell fixes—not guesses:
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Vehicle-specific fitment support
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Correct amperage for GM V6 & V8 platforms
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Brand new — not remanufactured
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Built for towing, hauling, and daily abuse
If your GM truck or SUV keeps killing batteries or lighting up the dash, this is the fix.
Muddkatt3 –
Works great. It has been a couple months now and it is working fine. Why pay more.
Daniel Garcia –
was easy to install, light whining noice which is just the brushes needing a little wear, it’s common the whining will go away………
Amazon Customer –
perfect fit value for the money
ramone –
Works as described . A+ premium is the real deal
Sparky –
I saw the reviews and thought I was something special and my alternator would work fine.Turns out I am nothing special and I had the same issues as everyone else, Voltage fluctuated to the point of my dash gauges jumping around and lights flickering.It looked good was easy to install and fit perfect, it just didn’t work.I returned it and will buy one locally for twice as much.1 STARS
william –
JUST PUT IT ON TODAY VERY LOUD WHINING NOISE BUT CHARGING SO FAR HOPEFULLY THE WHINING NOISE WILL GO AWAY
JT.THOMAS –
Just as described great for the price
wesley roberts –
Used on a 2004 Chevy Silverado 1500 works great no problems with installation very pleased
Randy –
Day 1 – 5 star, will update.
On first appearance the damn thing is absolutely 5 star business. The packaging was so top notch. As for anything else to be rated, I will need some time to determine it’s rating. Cheers for now.
Kathy –
Conforme et bien protégé
L’alternateur semble conforme à mon ancien. Le produit était extrêmement bien protégé à l’intérieure du paquet et très bien emballé.De plus, le transporteur semble avoir pris grand soin du colis.Je recommande vivement…👍🏻