Power Steering Pump Pulley 861578 For Mercury MerCruiser 4.3 5.0 5.7 6.2 L V6 V8

Power Steering Pump Pulley for Mercury MerCruiser

This power steering pump pulley for Mercury MerCruiser engines drives the power steering pump to maintain hydraulic pressure, referencing OEM cross-reference number 861578.

Overview

This power steering pump pulley is designed for Mercury MerCruiser 4.3, 5.0, 5.7, and 6.2 liter V6 and V8 engines. It transfers belt drive from the crankshaft to the power steering pump, ensuring reliable steering assist. Made for marine applications, this pulley meets the demands of saltwater and freshwater environments.

Built For Performance

• Precision-machined steel construction for long service life
• Balanced to reduce vibration and noise
• Direct replacement for OEM part 861578
• Corrosion-resistant finish for marine exposure
• Standard belt groove profile for reliable grip

Fits These Machines

• for Mercury MerCruiser 4.3L V6
• for Mercury MerCruiser 5.0L V8
• for Mercury MerCruiser 5.7L V8
• for Mercury MerCruiser 6.2L V8

On-The-Job Use

• Install on stern drive and inboard engines
• Replace worn or damaged pulleys during routine maintenance
• Use with serpentine or V-belt systems as specified

Specs At A Glance

Good To Know

Q: Is this pulley a direct OEM replacement? A: Yes, it is designed to match the fit and function of the original 861578 pulley.

Q: Can I use this on a fresh water cooled engine? A: Absolutely, the corrosion-resistant finish suits both saltwater and freshwater cooling systems.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.