Replace a weak, failing, or damaged charging-system alternator with a Genuine Ford Motorcraft 220 Amp Alternator designed for select 2011–2014 Ford F-150 applications.
This is the genuine Ford replacement BL3Z-10346-A, also identified as Motorcraft GL-8648. Unlike a generic remanufactured replacement, this alternator is built for the correct factory mounting, electrical connections, pulley alignment, charging output, and vehicle charging-system requirements.
Rated at 220 amps, this high-output alternator is a strong replacement choice for F-150 trucks originally equipped with the applicable factory charging system.
If you are replacing an original alternator that carries BL3Z-10346-A, GL-8648, or a confirmed interchange, this genuine Ford unit provides OE-level fit and function.
Key Features
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Genuine Ford / Motorcraft alternator
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220 amp output
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Ford part number BL3Z-10346-A
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Motorcraft number GL-8648
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Direct-fit replacement for applicable factory 220A systems
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Factory-style mounting and electrical connections
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Internal voltage regulation
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Heavy-duty charging-system design
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Designed for correct pulley alignment and belt operation
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New OEM replacement component
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Excellent choice for restoring proper factory charging performance
Vehicle Fitment
Ford F-150
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2011
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2012
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2013
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2014
Engine Applications
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3.5L V6 EcoBoost
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3.7L V6
IMPORTANT FITMENT INFORMATION
Not every 2011–2014 Ford F-150 uses the same alternator.
Ford used multiple alternator outputs and charging-system configurations depending on engine, equipment package, and factory options.
This alternator is intended for applications requiring the 220 amp BL3Z-10346-A / GL-8648 alternator.
Verify the original alternator part number, amperage rating, or vehicle VIN before ordering.
Do not purchase based solely on model year and engine size.
Specifications
Brand: Genuine Ford / Motorcraft
Ford Part Number: BL3Z-10346-A
Motorcraft Number: GL-8648
Component: Alternator Assembly
Output: 220 Amp
Voltage: 12 Volt
Pulley: 6-Groove
Regulator: Internal
Installation Type: Direct Replacement
Interchange / Cross-Reference Numbers
This alternator may also be searched or referenced under the following numbers:
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BL3Z-10346-A
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BL3Z10346A
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GL-8648
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GL8648
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Lester 11630
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Denso 104210-6340
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Denso 104211-0070
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Denso 104211-0850
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WAI 11630N
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Delco Remy 23006
Cross-reference numbers are provided as a search and identification aid. Always verify the original unit and vehicle application before ordering.
Common Symptoms of a Failing Alternator
A failing alternator can cause a variety of charging and electrical problems, including:
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Battery warning light
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Charging-system warning message
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Low system voltage
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Battery repeatedly going dead
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Slow or weak starting after driving
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Headlights dimming or fluctuating
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Interior electronics operating intermittently
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Charging voltage dropping under load
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Alternator bearing noise
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Inability to maintain proper battery charge
Battery condition, electrical connections, wiring, grounds, serpentine belt condition, and belt tensioner operation should also be inspected during diagnosis.
Installation Notes
Professional installation is recommended.
Before installing the replacement alternator:
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Disconnect the battery according to the proper service procedure.
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Inspect battery condition and state of charge.
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Check positive and negative battery cable connections.
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Inspect engine and chassis grounds.
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Inspect the serpentine belt.
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Inspect the belt tensioner and idler pulleys.
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Check the alternator connector and main charging cable for damage or corrosion.
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Compare the replacement alternator with the original before installation.
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Confirm mounting points, pulley configuration, electrical connector, and amperage rating.
Replacing a failed alternator without correcting damaged wiring, poor grounds, a weak battery, or a faulty belt drive can result in continued charging-system problems.
