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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Fuel delivery systems
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Power steering and braking electronics
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Headlights, work lights, and interior lighting
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HVAC, infotainment, and towing accessories
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Charging and maintaining the battery
When alternator output drops, the battery gets forced to carry the load—briefly—and then fails early. Symptoms usually include:
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Repeated dead batteries
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Flickering or dim headlights
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Charging system warnings
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Random electrical glitches
Replacing the alternator fixes the root cause, not the symptoms.
From the brand
Product description
Correct 105-Amp Output — Exactly What GM Designed
GM engineered these trucks around a 105-amp charging system to balance reliability and electrical demand. This alternator delivers:
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Stable voltage at idle
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Consistent output under accessory load
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Proper battery recharge after starts
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Reduced long-term stress on wiring and modules
Not oversized. Not underpowered. Exactly right.
Brand-New Construction for Long-Term Reliability
The 8247N alternator features:
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New high-efficiency copper windings
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Internal voltage regulator for stable output
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Precision-balanced rotor and heavy-duty bearings
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OE-style mounting points and electrical connectors
No reman internals. No mystery history. Just dependable charging built for truck life.
Why Buy from Pro Street Online?
At Pro Street Online, we sell parts that actually fix problems:
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Vehicle-specific fitment
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Correct amperage for GM truck platforms
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Brand new — not recycled
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Built for daily driving, towing, and long-term ownership
If your Silverado keeps killing batteries, this is the fix.
PART NUMBERS:
- GMC: 10464481, 10464438, 19244727, 10464451, 10464455, 19244731
- Delco: 10464481, 15755616, 15755616W, 10480388, 10480326, 19244728, 10464455, 10480476, 15768829, 19244731
- Lester: 8291, 8247, 8273
- Arrowhead: ADR0215
- J & N Automotive: 400-12139, 400-12139R
- AC-Delco: 321-1850, 334-2491A, 334-2528, 321-1798, 321-2104, 334-2491, 321-1811, 321-1815, 334-2516
- Delco: 10464438, 10464451
- Remy: 21798, 91602, 91610, P8247, 21815, 91603
- Bosch: AL8785X, AL8730X, AL8790X
- Voltage:12V
- Amperage:105A
- Rotation:CW
- Regulator/Fan:IR/IF
- Plug Code:314
- Pulley Class: 6 Grooves
Ismael Ordaz –
Works great, is Plug and play. Direct fit.
Brandon King –
Great product
Katherine –
Works great thank you
wcwithers –
It’s worked great on my 2004 Buick Rainier. Value for the money for sure.
DK –
Alternator fit perfectly in my 5.3L V8 2001 Chevy Silverado and at a great price. Delivery was very quick too. Alternator went out and I had the new one installed in less than 24 hours
esteban –
Perfect 👌 Fit. Works great. 2001 Silverado
Crystal –
1st one ordered was defective. 2nd one that replaced the original has a hum to it but otherwise works as intended. It’s only been in the vehicle for 2.5 weeks overall.
John H Mershon –
easy to install, just looked at you tube video and had to undo the tension belt and two bolts and viola it was that easy.