This oil cooler is specifically designed for Cummins 6B 5.9L engines by Interstate-McBee. It is a reliable and efficient accessory that ensures optimal engine performance. The brand name speaks for itself, as Interstate-McBee is a trusted name in the industry. This product is perfect for those who want to upgrade their engine's cooling system and improve their overall system performance. It is easy to install and use, and is a great addition to any smart home electronics system.