
Tired of oil leaks from your Duramax's oil cooler adapter? The original adapter uses a metal gasket that can wear out and leak over time, especially as the cooler flexes.
The Fleece Performance Duramax Oil Cooler Adapter is an improved replacement. It features a superior sealing design with an integral square-cut seal ring instead of the metal gasket. This creates a more positive seal and reduces the risk of leaks. Additionally, the slotted mounting holes on one end allow for easier installation.
- Compatible with 2001-2007 and 2011-2016 Duramax engines
- Solves the common problem of leaking oil cooler adapters
- Integral square-cut seal ring for a superior seal
- Slotted mounting holes for easier installation

Tired of oil leaks from your Duramax's oil cooler adapter? The original adapter uses a metal gasket that can wear out and leak over time, especially as the cooler flexes.
The Fleece Performance Duramax Oil Cooler Adapter is an improved replacement. It features a superior sealing design with an integral square-cut seal ring instead of the metal gasket. This creates a more positive seal and reduces the risk of leaks. Additionally, the slotted mounting holes on one end allow for easier installation.
Compatible with 2001-2007 and 2011-2016 Duramax engines
Solves the common problem of leaking oil cooler adapters
Integral square-cut seal ring for a superior seal
Slotted mounting holes for easier installation[...]
Tired of oil leaks from your Duramax's oil cooler adapter? The original adapter uses a metal gasket that can wear out and leak over time, especially as the cooler flexes.
The Fleece Performance Duramax Oil Cooler Adapter is an improved replacement. It features a superior sealing design with an integral square-cut seal ring instead of the metal gasket. This creates a more positive seal and reduces the risk of leaks. Additionally, the slotted mounting holes on one end allow for easier installation.
- Compatible with 2001-2007 and 2011-2016 Duramax engines
- Solves the common problem of leaking oil cooler adapters
- Integral square-cut seal ring for a superior seal
- Slotted mounting holes for easier installation