The NEW! Quick Start™ Heavy Duty Large Case. Ford Motorcraft type 4G series high amp alternator for Ford family of vehicles and other adapted applications. Upgrade your Ford, Lincoln, Mercury internal regulator alternator to the 4G style heavy duty high amp alternator. If you are currently using your charging system to it's max, then YOU MUST HAVE THIS ALTERNATOR!
Offered in 130, 160, 200 and 250 amperage versions with many different front housing mounting configurations for a direct fit in your Ford family vehicle or adaptive fit to many vehicle types. We have helped with many Older Ford Vehicle upgrades and non-Ford adaptive applications such as Busses, Porsche's, Boats, and many others.
The large case heavy duty, high amp alternator has many benefits over it's small case brother. These include: greater mass & surface for less heat build up, less current loss, higher amperage output when hot. Improved idle and slow speed output. Plus, the service duty and life increases substantially. MORE POWER, LESS HEAT PROBLEMS and GREATER RELIABILITY. Click here to see a partial list of common vehicle applications.
Remember, you don't pay a core charge so you get to keep your old alternator. Contact us if your not sure of your application. Great choice for installation on Ford vehicles and other conversions.
Order at bottom of this page or click here. Units come in 140, 160, 200 and 250 amp options with either a standard or heavy duty bridge rectifier and voltage regulator, don't forget to select a Quicktifier option using the radio buttons near the "Add to Cart" button. Pay via Paypal or Credit Card with shipping by FedEx.
The Ford Motorcraft type 4G Series alternator can be easily identified by it's rear black cover. It is the only generation of the Ford Motorcraft type to feature this type of rectifier cover. The 1G series has only a rear case, without a rear cover. The 2G series is externally regulated and can be identified by the lack of an internal voltage regulator. 3G series alternators have an exposed voltage regulator / brush holder combination. Finally, the 6G series alternator can be identified by it's particular cover-like rear housing and large bridge rectifier.
Note: The Heavy Duty versions below have a better Voltage Regulator and a much more durable Heavy Duty Rectifier over the standard duty version. Also, please provide vehicle year, make, model, engine, etc. on the comments page of the check out section to ensure proper fit for your vehicle. If you forget we will e-mail for the application information before we ship.
To the left is the Ford Motorcraft type 4G series heavy duty, high amp alternator paired with a Quicktifier Remote Bridge Rectifier. This addition provides tremendous durability. When added to the heavy duty model 4G series high amp alternator with the upgraded voltage regulator, it creates an unstoppable charging force.
The Ford Motorcraft type 4G series heavy duty, high amp alternator is used on many Ford vehicles, below is an incomplete list, please call 1-616-606-5045 to see if your vehicle requires a 4G series heavy duty high amp alternator.
The 250 amp Ford Motorcraft type 4G series high amp alternator requires a Quicktifier Remote Bridge Rectifier. Please make a Quicktifier selection when ordering your high amp 4G series alternator. If you order a 4G series alternator at over 200 amps without a second set of diodes, it will fail, stock 4G series bridge rectifiers are not heavy duty enough to handle the excessive amperage alone.