Dieselsite OC6 6.0 Powerstroke Oil Cooler Kit

Fix one of the most common failure points on the 2003-2007 6.0L Powerstroke with the Dieselsite OC6 Oil Cooler Kit. The factory oil cooler is notorious for clogging, restricting flow, and driving up oil temperatures — which can lead to further issues with the EGR cooler and overall engine reliability.

Dieselsite redesigned this cooler from the ground up after evaluating both OE and aftermarket units. The result is a better-performing cooler that uses more plates than the original and properly sized coolant passages for improved heat exchange and cooling efficiency.

Key Features

• More plates than the OE cooler for increased cooling capacity
• Optimized passage design that maximizes heat transfer
• Direct drop-in replacement — no modifications required
• Complete gasket and O-ring kit included
• Stainless steel reservoir screen
• Made in the USA

What’s Included

• Newly designed oil cooler
• Full set of O-rings and gaskets
• Stainless steel reservoir screen

Fitment

• 2003–2007 Ford F-250 / F-350 / F-450 / F-550 Super Duty with 6.0L Powerstroke
• 2003–2007 International VT365 / VT275

Replaces: Ford 1886511C93, 3C3Z-6A642-CA | Alliant AP63451

If you’re seeing elevated oil temperatures, a high oil-to-coolant delta, or simply want a reliable, long-term replacement for a clogged factory cooler, the Dieselsite OC6 is a proven, cost-effective solution that bolts right in and restores proper cooling performance.