ACDelco 85743832 Automatic Belt Tensioner Assembly

The ACDelco 85743832 is a GM Original Equipment automatic belt tensioner assembly designed to maintain proper tension on the accessory drive belt. As a direct OEM replacement, this tensioner meets the same fit, form, and function requirements as the part originally installed at the factory.

The accessory drive belt tensioner uses a spring-loaded arm to apply consistent, automatic tension to the serpentine belt, preventing slippage and premature belt wear. A worn or weak tensioner can lead to belt noise, accessory malfunction, or complete belt failure — making timely replacement critical to drivetrain reliability.

Key Features:

• GM Original Equipment — manufactured to OEM specifications
• Spring-loaded design maintains consistent belt tension automatically
• Direct bolt-on replacement for straightforward installation
• Helps prevent premature serpentine belt wear and slippage
• Durable construction for long service life

As an ACDelco Gold (GM OE) part, the 85743832 is the same component sourced directly from General Motors and is the preferred replacement for GM technicians and do-it-yourself enthusiasts alike.