Product description
BDELI – Better Deliver, Better Deal
Confirmed Vehicle Fitment
This alternator is compatible with:
Ford
-
Mustang 2001–2004 – 3.8L V6
-
Mustang 2004 – 3.9L V6
Electrical Specifications
-
Voltage: 12V
-
Output: 110 Amps
-
Condition: Brand New
Always verify engine size and part number prior to ordering.
REPLACEMENT FOR or COMPATIBLE WITH FORD:
Mustang V6 3.9L 04-04
Mustang V6 3.8L 01-04
When alternator output drops, the battery gets overworked trying to compensate. That leads to:
-
Premature battery failure
-
Dim or flickering lights
-
Electrical warning lights
-
Poor drivability and no-start issues
Replacing the alternator fixes the root problem — not just the symptoms.
OE/Part Numbers:
- Ford: 1R3U-AA, 1R3U-AB, 1R3U-AC, 1R3U-AD, 1R3U-10300-AA, 1R3U-10300-AB, 1R3U-10300-AC, 1R3U-10300-AD, 1R3Z-10346-A, 1R3Z-10346-ARM, 1R3Z-10V346-ABRM, 1R3Z-10V346-ACRM
- Lester: 8266
- Arrowhead: AFD0075
- Arrowhead Old: AFD0133
- J & N Automotive: 400-14048
- Motorgraft: GL-449
- Remy Light Duty: 23723
Why Alternator Health Matters on the Mustang
Once the engine is running, the alternator powers:
-
Ignition and engine management
-
Fuel system and sensors
-
Headlights and exterior lighting
-
Audio system and interior electronics
-
Charging and maintaining the battery
Correct 110 Amp Output for Factory Systems
The V6 Mustang charging system was engineered around a 110-amp alternator, which provides:
-
Stable voltage at idle and cruising speeds
-
Proper battery recovery after starts
-
Balanced electrical load handling
-
Reduced strain on wiring and accessories
This output is ideal for stock vehicles and lightly modified daily drivers running factory electronics.
Built New for Long-Term Reliability
This alternator features:
-
High-efficiency copper windings
-
New internal voltage regulator
-
Precision-balanced rotor and bearings
-
OE-style mounting points and electrical connectors
Installation is straightforward and bolt-on — no wiring mods, no clearance issues, no creative problem-solving required.
Why Buy from Pro Street Online?
At Pro Street Online, we sell parts that fix problems the first time. This alternator is vehicle-specific, correctly rated, and designed to restore factory charging reliability — not introduce new electrical mysteries.
If your Mustang is your daily, your project, or your “I swear I’ll mod it later” car, this alternator keeps it running like it should.
Final Verdict
The 110-Amp Replacement Alternator for 2001–2004 Ford Mustang V6 delivers proper charging performance, OE fitment, and long-term reliability. If your Mustang keeps eating batteries or lighting up the dash, this is the fix.
Melodie –
Works great.
Steve B –
I bought this alternator for a 2004 V6 3.9L mustang. Other than Ford using 3 different size bolts on this one part it was easy to do. It fit exactly as good as the original. From start to finish it took about 30 to 45 minutes.
Richard –
It’s brand new looks great and so far so good I have no issues with it after it’s been installed
Bill boolman –
Don’t buyIt stopped working after 3 weeks. This thing is junk.
Greg’s Wife Donna –
Installed and working perfectly. Charging at a continuous rate, I think the quality is in this product, and I’m going to shop for another alternator for my chevy Astro. Fair price for the quality.
M.Sturm –
Good. Works
Richard Baim –
I’m planning to use this alternator as a motor to power an ebike. First the cold weather needs to end and then it will be warm enough to work in the garage. The procedure for the conversion is on YouTube. There are several procedures shown for this on YouTube.
Amazon Customer –
Negative 5 stars if I could! Alternator failed out of the box to meet demand of headlights and A/C.JUNK!