Dayco 87791 Molded Heater Hose is the perfect solution for your 7.3 Powerstroke 1999-2003. Our hose offers a durable construction that ensures it will withstand harsh environments and can provide reliable service season after season. Reinforced with knitted polyester, this heater hose provides lasting performance that puts other products to shame. The EPDM rubber compound helps resist aging and cracking, so you can rest assured our hoses are up to the task ahead. Designed to meet SAE J20R4, Class D1 & SAE J1684 standards, Dayco 87791 gives you the peace of mind that you deserve when buying a product for your vehicle. The molded ends also match the OE-style, meaning that installation and repairs become easy tasks on any job site. Make Dayco 87791 Molded Heater Hose part of your next repair or upgrade today!