In 1999 Ford Motor Company switched from using the large case 3G series alternator on the 7.3L Power Stroke Diesel to the small case 110 amp 6G series alternator. Before 1999, F Series Trucks, Excursion, and E Series applications used the large case 3G series . Though some engine options allow an upgrade to the tougher Extreme Duty 250 Amp 6G Series Alternator many still require the 3G Series Heavy Duty Alternator. After 1999 Ford no longer offered the large case 3G alternator in an upgrade option for Power Stroke diesel equipped vehicles. The small case 110 amp 6G series alternator that comes standard on the Power Stroke Diesel since 1999 has been plagued with reliability issues , the component that most often fails is the Bridge Rectifier . Upgrading the small case unit to a higher amperage and stay in the small case housing size just compounds the problems . For 1999 and newer Ford Power Stroke Diesel and gas engine model Ford trucks & suv's the better choice is the Large Case Heavy Duty large Case 6Gseries.
The NEW! Quick Start Heavy Duty Large Case (left side of photo) . Ford Motorcraft 3G type alternator for Ford family of vehicles and other adapted applications. Upgrade your small case (shown on right) 2G and 3G Ford, Lincoln, Mercury internal regulator alternator to the Large Case style alternator. If you are currently using your charging system to it's max, then YOU MUST HAVE THIS ALTERNATOR! The 3G series alternator was mostly used from 1992-2000 with some vehicles such as the E series van using the 3G up to 2010. If you are not sure if your Ford Family of vehicles has the 3G call 616-606-5045 and we can look you vehicle up in our application guide and tell you what series alternator you have.
Offered in 140, 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 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 learn how to identify the small case alternator from the large case.
Click here to see a partial list of common vehicle applications .
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,. For the Extra Heavy Duty Dual and Triple Bridge Rectifier versions you need 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.
Remember, These alternators are new, 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.
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 3G series heavy duty, high amp alternator paired with the OPTIONAL Quicktifier Remote Bridge Rectifier. The addition of the Quicktifier External Dual or Triple Bridge Rectifier provides tremendous durability. When added to the heavy duty model 3G series high amp alternator with the upgraded voltage regulator, it creates an unstoppable charging force. Note: Single Bridge Rectifier Versions do not have the extra Quicktifier box and install like standard alternators.
The Ford Motorcraft type 3G 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 3G series heavy duty high amp alternator .
Upgrade from the inferior 1G and 2G series external regulated alternators to the high amp 3G series performance alternator made easy. Prefabricated wiring harness is a hassle-free way to wire up your 3G series alternator. Combines Plug # 462802 and the stator lead connector # 462804. No more measuring, stripping, splicing, and crimping. Click the "Buy" button to order the 925606 easy Ford wiring harness adapter plug. Click "View" for more info.
The 250 amp Ford Motorcraft type 3G series High Amp Alternator requires a Quicktifier Remote Dual or Triple Bridge Rectifier , the internal Bridge Rectifier is not durable enough to holt up to this output. Please make a Quicktifier selection when ordering your high amp 3G series alternator. If you order a 3G series alternator at over 200 amps without a second set of diodes, it will fail , stock 3G series bridge rectifiers are not heavy duty enough to handle the excessive amperage alone .
