WAI 11785N Alternator

Overview

This WAI alternator is a new, 150-amp replacement built for vehicles that use a Denso-style charging system. It is engineered to deliver the electrical output needed for modern power demands and is a direct-fit option for a wide range of Chevrolet, GMC, Cadillac, and related applications. Part number 11785N is a practical choice when replacing a worn charging unit on trucks and SUVs.

Key Features

• 100% new alternator, not remanufactured
• 150-amp output for higher electrical demand
• Internal regulator for integrated voltage control
• Internal fan design for compact packaging
• Serpentine pulley with 6 grooves
• Decoupled clutch pulley included
• Clockwise rotation, right-hand direction
• Denso family construction for listed applications

Detailed Description

WAI builds this alternator with proprietary components and manufacturing processes to support long service life and consistent performance. The unit is configured with an internal regulator, internal fan, serpentine belt pulley, and decoupled clutch pulley, making it a fitment-specific replacement for vehicles that require this Denso-style setup. Part number 11785N is listed across Chevrolet Silverado, GMC Sierra, Tahoe, Suburban, Yukon, Cadillac Escalade, and select commercial applications, including Express, Savana, and Silverado HD platforms.

This part cross-references BBB Industries 11785 for the same application.

What It Helps Address

• Low charging output from a failing alternator
• Battery warning lights related to charging system faults
• Electrical instability under accessory load
• Noise or pulley-related issues from a worn charging unit
• Starting problems caused by insufficient system voltage

Installation Notes

Verify the vehicle uses the listed Denso-style configuration, 150-amp output, clockwise rotation, and serpentine pulley arrangement before installation. Confirm the connector and mounting style against the original unit and match the application notes for your exact Chevrolet Silverado, GMC Sierra, or related model. Part number 11785N should be compared to the removed alternator to ensure correct fitment.

Quality Assurance

WAI states that this alternator is 100% new and manufactured with proprietary components and processes to support maximum life and performance.