Dayco 70848 Radiator Coolant Hose - Lower or Upper

Curved radiator hose for OE-style cooling service

Dayco Curved Radiator Hose 70848 is a molded EPDM coolant hose built for upper and lower radiator hose applications where a curved routing path is required. It is sized with a 1 5/16 in. inside diameter on one end and a 1 1/2 in. inside diameter on the other, making it a dual I.D. hose for specific cooling system connections.

Compatible With 1987-1990 Jeep Wrangler upper radiator hose applications and 1970-1974 Toyota Pickup, 1971-1974 Toyota Celica, and 1971-1974 Toyota Corona lower radiator hose applications. Dayco 70848 is also a direct search match for buyers comparing OE-style replacement hose options for these vehicles.

Key features

• EPDM construction for coolant-system service
• Black molded hose with curved profile for routed installations
• Dual I.D. design: 1 5/16 in. and 1 1/2 in. inside diameters
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Fits upper and lower radiator hose positions depending on application
• Dayco Curved Radiator Hose line for replacement cooling system service

Detailed description

Dayco 70848 is a curved radiator coolant hose made from EPDM, a common material for engine cooling systems because it handles coolant exposure and heat cycling. The molded shape supports applications that require a formed hose rather than a straight universal section, and the dual inside diameter design matches the listed vehicle connections. This part number is frequently searched as Dayco 70848 for Jeep Wrangler and Toyota radiator hose replacement needs.

This part cross-references Gates 20773 and NAPA 7536 for the same application.

What this hose helps address

• Cracked or hardened radiator hose material
• Coolant leaks at a curved hose section
• Incorrect hose routing in a replacement cooling repair
• Softening, swelling, or collapse of an aging coolant hose
• Fitment issues when replacing an upper or lower molded hose

Installation notes and tips

Verify the hose position, end diameters, and routing before installation. Match the hose to the listed upper or lower application and confirm clearance around nearby components. Inspect clamps, necks, and adjoining coolant passages for wear or corrosion before installing Dayco 70848. After installation, refill and bleed the cooling system according to the vehicle service procedure and check for leaks at operating temperature.

Quality assurance

Dayco 70848 is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for radiator hose service. The Dayco Curved Radiator Hose line is built for replacement cooling applications where formed hose geometry and correct I.D. sizing are required.