Powermaster Alternator Pulley 186, 6-Rib Serpentine, 2.56-Inch Diameter, Steel, Black Oxide

The Powermaster Alternator Pulley 186 is designed for serpentine-belt charging systems that require a reliable 6-rib pulley. Its 2.56-inch outside diameter supports proper belt engagement and helps maintain consistent alternator operation in compatible applications. Manufactured from durable steel, this pulley is built to withstand the demands of engine-bay temperatures, rotational loads, and repeated belt cycling.
The black oxide finish provides added surface protection while giving the pulley a clean, professional appearance. The 6-rib serpentine design helps maintain alignment with the belt system and promotes smooth, dependable accessory drive performance. This Powermaster pulley is suitable for use with compatible Powermaster alternators and should be matched to the alternator, belt configuration, and vehicle application before installation.
Part Number 186 provides a dependable replacement or service option when an existing alternator pulley is worn, damaged, or otherwise unsuitable for continued use. Proper installation is essential for correct belt tracking and charging-system performance. Verify pulley compatibility and belt routing with the alternator manufacturer’s specifications before installation.

Features:

• 6-Rib Serpentine Design: Provides reliable engagement with compatible 6-rib serpentine belts.

• 2.56-Inch Diameter: Supports proper belt speed and alternator drive performance in compatible applications.

• Durable Steel Construction: Built to handle rotational loads and demanding under-hood operating conditions.

• Black Oxide Finish: Helps protect the pulley surface and provides a clean, durable exterior.

• Powermaster Compatibility: Designed for use with compatible Powermaster alternators.

• Part Number 186: Provides a dependable replacement pulley identification for compatible applications.