89817 Aftermarket Caterpillar/ZF 301A MOTA Gear Cooler 4 x 17 in | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket Caterpillar/ZF 301A MOTA Gear Cooler 4 x 17 in - Replacement Part Number: 89817

MOTA-style gear-oil cooler for Caterpillar/ZF 301A marine installations.

⚙️ 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:

• 89817 (MOTA reference)

OEM / Related Numbers:

• 89817

• MRC89817

Aftermarket / Verified Equivalents:

• MOTA: 89817

• Mr Cool: MRC89817

🚤 Compatibility

Commonly used on:

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

Typically suits:

• Engine models:

• Caterpillar marine engines coupled to ZF 301A transmissions

• Body Diameter: approximately 4 in

• Overall Length: approximately 17 in

• Construction: copper-nickel

🔌 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