WAI 8408N Alternator

WAI 8408N Alternator for Ford Freestar

The WAI 8408N is a 100% new alternator built for Ford charging-system service, with the amperage output needed for vehicles with higher electrical demand. It is a direct replacement for 2004-2007 Ford Freestar models originally equipped with a 135 amp alternator.

Key Features

• Part number: 8408N
• Brand: WAI
• Alternator output: 135 amps
• 100% new construction, not remanufactured
• Internal fan design
• Internal voltage regulator
• Clockwise (right) rotation
• Serpentine pulley with 6 grooves included
• Ford family application

Product Details

WAI 8408N alternators are engineered with proprietary components and manufacturing processes to support long service life and consistent performance. This unit is built as a new replacement alternator for the Ford Freestar, and it matches the original 135 amp specification for 2004-2007 Ford Freestar charging-system service. If you are searching for a Ford Freestar alternator 135 amp replacement or a WAI 8408N alternator for 2004-2007 Ford Freestar, this unit aligns with the listed OE-style application.

This part cross-references AP Exhaust 8408 for the same application.

Common Problems This Part Can Address

• Battery warning light caused by alternator output loss
• Low charging voltage during driving or idling
• Dim headlights or unstable electrical performance
• Battery drain from a failing charging system
• Noise or charging irregularities from a worn alternator assembly

Installation Notes and Tips

• Verify pulley groove count, belt type, and rotation before installation.
• Confirm the vehicle uses the original 135 amp alternator specification.
• Inspect the serpentine belt, tensioner, and electrical connectors during replacement.
• Check charging voltage after installation to confirm proper system operation.

Quality Assurance

WAI states that this alternator is manufactured as a new unit, not remanufactured, using proprietary components and processes to support durability and performance. The 8408N is built for Ford Freestar charging-system replacement where the original equipment specification calls for 135 amps.