M5354-3091CN Aftermarket Yanmar ZF85A Oil Cooler 1-1/2 in Hose | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Yanmar ZF85A Oil Cooler 1-1/2 in Hose - Replacement Part Number: M5354-3091CN

High-pressure ZF85A gear-oil cooler with 1-1/2-inch seawater connections.

⚙️ Key Features

• Marine-grade shell-and-tube oil cooler

• Designed as a direct replacement for the listed reference numbers

• Helps maintain stable operating temperature under sustained marine load

• Marine connection sizes and mounting points must match the original assembly

• Suitable for professional marine cooling-system service and replacement

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• M5354-3091CN (1-1/2-inch water version)

OEM / Related Numbers:

• M5354-3091CN

• MRC9309-90MB 1-3/4-inch sister version

Aftermarket / Verified Equivalents:

• Mr Cool: MRCM5354-3091CN

🚤 Compatibility

Commonly used on:

• Marine-grade shell-and-tube oil cooler systems

Typically suits:

• Engine models:

• Yanmar marine engines coupled to ZF85A transmissions using 1-1/2-inch seawater hose

• Body Diameter: 3 in

• Bundle Length: 9 in

• Overall Length: approximately 13-1/2 in

• Water Connections: 1-1/2 in

• Oil Connections: 3/8 in NPT

• Working Pressure: approximately 450 PSI

• Sacrificial Anode: CDZ9-032

🔌 Function

The cooler transfers heat from oil into the raw-water circuit without allowing the fluids to mix.

Common signs of failure:

• Oil or steering-fluid temperature rises above normal

• Loss of pressure or reduced transmission/steering performance as oil heats

• Oil sheen at the exhaust outlet or cross-contamination

• External leakage from fittings, seams or tube ends

• Restricted seawater flow, corrosion or internal tube failure

📦 Condition

• Brand new aftermarket replacement part

• New and unused

• Supplied in manufacturer or equivalent protective packaging