Dayco Upper Radiator Hose | Flex Hose | Non-Intercooled | 89-91 Dodge 5.9L Cummins RNH-GGD941BL1 The factory oil cooler does

The factory oil cooler does a good job of maintaining proper oil temperature but over time can become plugged with contaminates from poor coolant or oil quality

5-07 Cummins is a solid turbo

This particular 100 GPH rated pump will support stock up to 600 horsepower

Experience performance like never before with this must-have system

Dayco Upper Radiator Hose | Flex Hose | Non-Intercooled | 89-91 Dodge 5.9L Cummins RNH-GGD941BL1 The factory oil cooler doesDayco cooling system hoses feature knitted reinforcement, a synthetic EPDM rubber construction for high strength performance, protection against abrasion, and resistance to oil, mud, salt, road debris, ozone and coolants. They can also withstand temperature variations from 40F ( 40C) to +257F (+125C). The inner base is reinforced with knitted rayon for maximum strength and burst resistance. In addition to meeting SAE J20R4, Class D 1 requirements,