What is the main benefit of replacing a clogged oil cooler?

A clogged oil cooler can't effectively transfer heat from the engine oil to the coolant. Replacing it restores proper oil cooling, which prevents oil thinning and ensures critical engine components are protected from excessive wear.

Does this oil cooler come with everything needed for installation?

Yes, this Mishimoto oil cooler includes all the necessary gaskets to ensure a compatible and reliable installation on your specific Dodge Ram model.

What kind of warranty does this oil cooler have?

This oil cooler is covered by the Mishimoto Lifetime Warranty, offering a lifetime of worry-free driving and protection against manufacturing defects.

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Specifications

Brand: Mishimoto
Part #: MMOC-RAM-03
UPC: 840197723111

Mishimoto 03-07 Dodge Ram 5.9L Cummins Replacement Oil Cooler

Name: Mishimoto 03-07 Dodge Ram 5.9L Cummins Replacement Oil Cooler
Brand: Mishimoto
SKU: mishimoto-mishimoto-03-07-dodge-ram-5-9l-cummins-replacement-oil-cooler-t14-811863
Price: 315.63 USD
Availability: InStock

$315.63

Only 8 left in stock

Fits 2003-2007 Dodge Ram 2500. Mishimoto Replacement Oil Cooler restores engine oil cooling for reliable daily driving.

Key Features

Fits 2003-2007 Dodge Ram 2500 and 3500 5.9L Cummins.
Replaces clogged or leaking stock oil coolers for renewed reliability.
Includes all gaskets needed for a compatible installation.
Restores and improves engine oil cooling capabilities.
Meets OEM quality standards for daily driving performance.
Backed by the Mishimoto Lifetime Warranty.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

No-fit, no charge. Wrong part? Send it back, free return label.

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

Mishimoto is known for making well-built cooling components, and this replacement oil cooler for your 2003-2007 Dodge Ram 5.9L Cummins is no exception. Oil is crucial for keeping your hardworking diesel engine healthy, and a clogged or leaking oil cooler can really hurt its ability to protect vital parts. When that happens, the oil can't transfer heat effectively, leading to thinning and reduced protection.

This Mishimoto oil cooler is designed to be a direct fit, replacing your old, worn-out unit and bringing your engine's oil cooling back to reliable performance. It comes with all the necessary gaskets for a smooth installation, ensuring it seals up right and gets your truck back to its daily driving needs. You can expect it to meet OEM quality standards, restoring the performance you need for everyday use.

This cooler is a solid option for keeping your 5.9L Cummins running strong. It's backed by Mishimoto's Lifetime Warranty, so you can drive with confidence knowing it's built to last.