2486D003 Aftermarket Perkins 6-Cylinder Tandem Oil Cooler | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement Tandem Engine and Gear-Oil Cooler - Replaces Part Number: 2486D003

New copper-nickel tandem oil cooler replacing the Perkins 2486D003 configuration. It combines two oil-cooling sections end-to-end for six-cylinder marine engines. The replacement uses NPT oil ports and may require adapters where the original cooler used captive-thread fittings.

⚙️ Key Features

• Replacement for Perkins 2486D003 tandem cooler

• Approximately 3-inch diameter × 14.5-inch overall length

• Approximately 12-inch combined tube-bundle length

• Approximately 1.25-inch seawater connections

• Two isolated oil circuits with NPT replacement ports

🧰 Kit / Assembly Contents

• 1 × Complete tandem oil cooler - P/N 2486D003

• 2 × isolated oil circuits - typically two 1/2-inch NPT and two 3/4-inch NPT replacement ports

• 1 × common copper-nickel seawater bundle

• Thread adapters and mounting hardware are selected separately for the installation

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 2486D003 (Perkins OEM tandem-cooler reference)

OEM / Related Numbers:

• 2486D003CN

Aftermarket / Verified Equivalents:

• Lenco: LE2486D003

• Seakamp copper-nickel replacement for OEM 2486D003

• Mr Cool: MRC2486D003CN

🚤 Compatibility

Commonly used on:

• Perkins six-cylinder marine diesel installations with combined engine/gear-oil cooling

Typically suits:

• Engine / Equipment models:

• Perkins six-cylinder installations whose original tandem cooler is stamped 2486D003

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

• Engine / System Type: Inline six-cylinder marine diesel with separate marine gearbox

• Year Range: Installation-dependent Perkins production

• Serial / Model Identification: Confirm original captive-thread fittings and obtain the required NPT adapters before installation.

🔌 Function

The tandem cooler contains two isolated fluid circuits within one raw-water-cooled assembly. It controls the temperature of both connected systems while preventing the oils or fuel from mixing.

Common signs of failure:

• High temperature in either connected oil or fuel circuit

• Water contamination in transmission oil, steering fluid or fuel

• Oil or fuel appearing in the raw-water discharge

• Reduced system performance after prolonged operation

• External leakage, corrosion or failed pressure test

📦 Condition

• New aftermarket replacement part

• Brand new

• Supplied in original or equivalent packaging