3852840 / 3851921 Aftermarket Volvo Penta/OMC Power Steering Cooler | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement Power-Steering Cooler - Replaces Part Number: 3852840

New copper-nickel power-steering cooler replacing Volvo Penta 3852840/3851921 and OMC 913802. The compact approximately 2-inch × 8-inch assembly is used across numerous Volvo Penta/OMC sterndrive petrol installations.

⚙️ Key Features

• Replaces Volvo Penta 3852840 and 3851921

• Cross-references OMC 913802

• Approximately 2-inch diameter × 8-inch overall length

• Approximately 1-inch seawater and 3/8-inch oil-barb connections

• Copper-nickel marine core

🧰 Kit / Assembly Contents

• 1 × Complete power-steering cooler - P/N 3852840 / 3851921

• 1 × integrated copper-nickel tube bundle

• Hydraulic hoses, seawater hoses and mounting clamps are renewed separately

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 3852840 ↔ Cross-references 3851921

• 3851921 ↔ Cross-references OMC 913802

OEM / Related Numbers:

• 913802

• 3851921

• 3852840

Aftermarket / Verified Equivalents:

• Seakamp: 3851921/3852840 copper-nickel cooler

• Lenco: LE3851921

• Mr Cool: MRC3851921CN

🚤 Compatibility

Commonly used on:

• Volvo Penta and OMC sterndrive power-steering systems

Typically suits:

• Engine / Equipment models:

• GM-based 3.0L, 4.3L, 5.0L and 5.7L Volvo Penta/OMC packages using the listed cooler

• Principally 1994 through mid-2000s installations matched by engine serial

• Output / Engine Rating: Engine rating is model-dependent

• Engine / System Type: Petrol sterndrive engine with hydraulic power steering

• Year Range: Approximately 1994 - mid-2000s

• Serial / Model Identification: Confirm 3/8-inch hydraulic barbs and one-inch seawater connections.

🔌 Function

The cooler removes heat from the hydraulic power-steering fluid using the engine raw-water circuit. It helps preserve fluid viscosity, pump life and consistent steering assistance.

Common signs of failure:

• Heavy or inconsistent steering after prolonged operation

• Power-steering pump noise or fluid foaming

• Overheated, darkened or burnt-smelling steering fluid

• Water-contaminated or milky hydraulic fluid

• External leakage, corrosion or failed pressure test

📦 Condition

• New aftermarket replacement part

• Brand new

• Supplied in original or equivalent packaging