Dayco 70480 Radiator Coolant Hose - Lower or Upper

Dayco Curved Radiator Hose 70480

Dayco 70480 is a curved radiator coolant hose built for cooling-system service on select Pontiac and Dodge applications. Made from EPDM rubber with a 1 1/2 in. inside diameter at both ends, it provides a direct-fit replacement for vehicles that need a single I.D. curved hose in the upper or lower radiator circuit.

This Dayco Curved Radiator Hose line is engineered for common OE-style cooling layouts and follows SAE J20R4 Class D-1 and SAE J1684 Type EC specifications. If you are replacing a worn Pontiac Bonneville upper radiator hose or a Dodge Dakota lower radiator hose, part number 70480 gives you a fitment-focused option for the correct application.

Key Features

• EPDM construction for radiator coolant service
• Black finish for a clean OE-style appearance
• 1 1/2 in. inside diameter at both ends
• Single I.D. hose design
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC requirements
• Curved hose profile for routed cooling-system connections

Detailed Description

Dayco 70480 is a curved radiator hose designed for vehicles that use a 1 1/2 inch coolant hose connection and a formed bend to reach the radiator or engine-side fitting. The EPDM rubber construction is suited for hot coolant exposure and everyday underhood temperatures. This hose is listed for upper and lower positions depending on the vehicle, including 1995 Dodge Dakota lower applications and multiple Pontiac upper radiator hose applications such as Bonneville, Catalina, Firebird, GTO, LeMans, Tempest, and Grand Prix. This part cross-references Gates 20551 for the same application.

Vehicle Fitment

• Fits 1995 Dodge Dakota, lower.
• Fits 1966 Pontiac Bonneville, upper.
• Fits 1965 Pontiac Bonneville, upper.
• Fits 1968-1970 Pontiac Bonneville, upper.
• Fits 1966 Pontiac Catalina, upper.
• Fits 1965 Pontiac Catalina, upper.
• Fits 1968-1970 Pontiac Catalina, upper.
• Fits 1967-1970 Pontiac Firebird, upper.
• Fits 1968-1970 Pontiac GTO, upper.
• Fits 1965 Pontiac Grand Prix, upper.
• Fits 1966 Pontiac Grand Prix, upper.
• Fits 1967 Pontiac Grand Prix, upper.
• Fits 1968-1969 Pontiac Grand Prix, upper.
• Fits 1968-1970 Pontiac LeMans, upper.
• Fits 1968-1970 Pontiac Tempest, upper.

Installation Notes and Tips

Inspect the mating necks, clamps, and nearby cooling components before installation. Confirm the hose routing matches the original curved shape and verify the 1 1/2 in. end diameters before fitting. Replace any hose that shows cracking, swelling, soft spots, or coolant staining, and bleed the cooling system after service according to the vehicle procedure.

Quality Assurance

Dayco manufactures cooling-system hoses to published SAE specifications for material and performance consistency. Part number 70480 is built as a formed radiator coolant hose for the listed Pontiac and Dodge applications.