Dayco 71198 Radiator Coolant Hose - Lower

Curved radiator hose for cooling service

Dayco 71198 is a curved radiator coolant hose built for lower cooling-system routing where a formed shape is required. It uses EPDM construction and dual inside diameters to match the connection sizes called out for the application.

Key features

• EPDM rubber construction for coolant-system use
• Dual I.D. hose design with 1 3/8 in. and 1 1/2 in. ends
• Curved profile for lower radiator hose routing
• Black finish for a clean OE-style appearance
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications

Fitment details

Compatible with lower radiator hose applications on 1984-1985 Chrysler LeBaron, lower; 1984-1985 Chrysler New Yorker, lower; 1984-1985 Chrysler Town & Country, lower; 1984 Chrysler E Class, lower; 1984 Chrysler Executive Sedan, lower; 1985 Chrysler Executive Limousine, lower; 1984-1985 Dodge 600, lower; 1984-1985 Dodge Aries, lower; 1984-1985 Plymouth Caravelle, lower; and 1984-1985 Plymouth Reliant, lower. Dayco 71198 also matches the lower radiator hose application on these Chrysler and Dodge platforms.

What this hose helps address

• Coolant leaks from a cracked or aged hose
• Improper hose routing in a curved lower connection
• Mismatch between hose end diameters and the radiator or engine fitting
• Softening, swelling, or deterioration from heat and coolant exposure

Installation notes and tips

Verify the hose shape, end diameters, and routing before installation. Inspect adjoining clamps, fittings, and mating surfaces for wear or corrosion so the replacement hose seals correctly. Confirm the lower hose path matches the vehicle layout before final assembly.

Quality assurance

Dayco 71198 is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC standards for radiator coolant hose applications. Cross-reference part numbers for the same application include Gates 21440 and Mopar H0061287.