90495A7 Mercruiser Steer Pump Assy | Genuine Used Part

🔧 Product Description

Genuine MerCruiser 3.7L Power Steering Pump Assembly - Part Number: 90495A7

A genuine MerCruiser belt-driven power-steering pump assembly for 3.7L / 224 CID inline four-cylinder engines. The pump supplies hydraulic pressure to the steering actuator and was fitted to 165HP, 170HP, 180HP, 190HP, 470, 485 and 488 engine families where power steering was installed.

⚙️ Key Features

• Genuine MerCruiser OEM power-steering pump assembly
• Correct Mercury number 90495A7
• Saginaw-style belt-driven hydraulic pump
• Used on MerCruiser 3.7L inline four-cylinder engines
• Compatible with the matching reservoir cap, pulley, bracket and hose assemblies

🚤 Compatibility

Commonly used on

• MerCruiser 3.7L / 224 CID power-assisted steering systems
• Alpha and pre-Alpha sterndrive installations with the 470-series engine

Typically suits

• Engine models:
• MerCruiser 165HP 3.7L
• MerCruiser 170HP 3.7L
• MerCruiser 180HP 3.7L
• MerCruiser 190HP 3.7LX
• MerCruiser 470
• MerCruiser 485
• MerCruiser 488
• MerCruiser 3.7L 2BBL - serial 0B774252 and above
• MerCruiser 3.7L and 3.7LX power-steering applications produced from 1980-1989
• HP Range: 165HP - 190HP
• Engine Type: MerCruiser 3.7L / 224 CID inline four-cylinder petrol engine
• Year Range: Approximately 1980-1989

🔌 Function

The pump supplies pressurised hydraulic fluid to the MerCruiser steering actuator, reducing helm effort and assisting movement of the sterndrive.

⚠️ Common Signs of Failure

• Heavy or intermittent steering
• Pump whining or bearing noise
• Fluid leakage at the shaft or reservoir
• Foaming power-steering fluid
• Reduced assistance at idle
• Worn or wobbling pulley

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 90495A7 final MerCruiser power-steering pump assembly reference

OEM / Related Numbers

• 90495A7
• 90495
• 77108 power-steering pump cap
• 16-41878 pump mounting stud
• 90740 related power-steering cooler
• 99356A1 / 99356A2 related power-steering cooler assemblies
• MerCruiser 3.7L pump pulley and bracket references

Aftermarket / Verified Equivalents

• Saginaw: Type I integral-reservoir power-steering pump configuration
• Remanufactured marine pump assemblies sold as replacements for 90495A7

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated