Sinister Diesel High Amp Alternator - 250 AMPS (SDALTFORD99250) for 2003-2007 Powerstroke 6.0L - Image 1

Sinister Diesel High Amp Alternator - 250 AMPS (SDALTFORD99250) for 2003-2007 Powerstroke 6.0L - Image 2

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Sinister Diesel High Amp Alternator – 250 AMPS (SDALTFORD99250) for 2003-2007 Powerstroke 6.0L

Name: Sinister Diesel High Amp Alternator - 250 AMPS (SDALTFORD99250) for 2003-2007 Powerstroke 6.0L
Brand: Sinister Diesel
SKU: SDALTFORD99250
Availability: InStock

$967.19Purchase & earn 967 points!

The Sinister Diesel 250 AMP OEM High Output Alternator is a high-performance upgrade for 1999–2007 Ford Powerstroke (6.0L/7.3L) trucks. Designed for reliability under heavy electrical loads, it delivers 250 amps—enough to power demanding accessories like lights, audio systems, and winches—without draining the battery. It uses advanced 6-phase hairpin stator technology, twin rectifier plates, and 12 large diodes for durability. Capable of producing up to 180 amps at idle, it fits with the stock belt. Ideal for Powerstroke owners seeking a robust, consistent power supply.

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SKU: SDALTFORD99250 Categories: Engine Upgrades, Engine Upgrades, All Products, Powerstroke, Powerstroke: 1999-2003 (7.3L), Powerstroke: 2003-2007 (6.0L)

Description

The Sinister Diesel 250 AMP OEM High Output Alternator is designed specifically for the 99-07 Powerstroke (6.0L/7.3L). This alternator is engineered to provide reliable and consistent power to your truck’s electrical system, even under heavy loads.

With an output of 250 amps, this alternator is capable of powering high-performance accessories such as high-powered lights, audio systems, and winches without draining the battery. The alternator’s high output also ensures your truck’s electrical system remains fully charged, even at idle. This alternator features 6 phase hairpin stator technology, twin rectifier plates, and 12 massive diodes for hard to beat durability. We have seen this alternator crank out as much as 180amps at idle while still maintaining the stock length belt.

Overall, the Sinister Diesel 250 Amp OEM Alternator is an excellent choice for any Ford Powerstroke owner looking to upgrade their truck’s electrical system and power their high-performance accessories with confidence.

Additional information

Weight	10 lbs
Dimensions	8 × 8 × 6 in
Manufacturer	Sinister MFG

Fitment

2007 Ford F-250 6.0L

2007 Ford F-350 6.0L

2006 Ford F-250 6.0L

2006 Ford F-350 6.0L

2005 Ford Excursion 6.0L

2005 Ford F-250 6.0L

2005 Ford F-350 6.0L

2004 Ford Excursion 6.0L

2004 Ford F-250 6.0L

2004 Ford F-350 6.0L

2003 Ford Excursion 6.0L

2003 Ford F-250 6.0L

2003 Ford F-250 7.3L

2003 Ford F-350 6.0L

2003 Ford F-350 7.3L

2002 Ford F-250 7.3L

2002 Ford F-350 7.3L

2001 Ford F-250 7.3L

2001 Ford F-350 7.3L

2000 Ford F-250 7.3L

2000 Ford F-350 7.3L

1999 Ford F-250 7.3L

1999 Ford F-350 7.3L

2000 Ford Excursion 7.3L

2001 Ford Excursion 7.3L

2002 Ford Excursion 7.3L

2003 Ford Excursion 7.3L

Features

Powdercoated in Sinister Blue
Upgraded High Output Regulator
Upgrade High-Temperature Bearings
6- Phase Hairpin Stator Technology
Twin Rectifier Plates
12 Massive diodes
Up to 180amps at idle at stock length belt
1 Year Warranty

Includes

(1) High Output 250 Amp Alternator
(1) Pigtail connector

Warning

Note: Because this product exceeds OEM specifications, you must include a High Amp Wiring Upgrade Kit at the time of purchase to maintain the Alternator warranty and prevent damaging the under-sized OEM wiring.

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About brand

Sinister Diesel builds performance and reliability parts for diesel trucks. The company focuses on cooling, durability, and proper fitment. Sinister Diesel performance parts support daily driving, towing, and work use. Sinister designs cooling systems, charge pipes, and fuel system components. These parts help manage heat and reduce stress on the engine. Better cooling supports consistent performance under load. Truck owners trust the brand for dependable upgrades. These parts perform well in real-world driving conditions.

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