Dayco 71916 Radiator Coolant Hose - Lower, Lower - Radiator To Thermostat or Upper Right

Dayco Curved Radiator Hose 71916

The Dayco 71916 curved radiator hose is a dual I.D. coolant hose built from EPDM for dependable coolant routing in select applications. It is shaped for lower and upper-right radiator hose routing where a formed hose is required, including BMW 318i, 318is, 318ti, Z3, Lincoln LS, and Ford E-100 Econoline fitments.

Dayco’s Curved Radiator Hose line focuses on formed replacement hoses that match the routing and connection points used in specific cooling systems. Part number 71916 follows that approach with a dual inside diameter design to accommodate the listed end sizes and maintain proper fit in the cooling circuit.

Key Features

• EPDM construction for coolant system service
• Black finish for a factory-style appearance
• Dual I.D. hose design with 1 7/16 in. and 1 1/2 in. end inside diameters
• Curved hose profile for formed routing
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Compatible with lower radiator-to-thermostat and upper-right hose positions listed in fitment

Detailed Description

Dayco 71916 is a radiator coolant hose made for vehicles that require a curved, formed hose rather than a straight universal replacement. The EPDM rubber construction is suited for coolant exposure, while the dual I.D. layout supports the specified connection sizes at each end. This makes it a practical replacement for cooling system service on BMW 318i, BMW 318is, BMW 318ti, BMW Z3, Lincoln LS, and Ford E-100 Econoline applications listed below. This part cross-references Gates 20734 for the same application.

Vehicle Fitment

• Fits 2000-2005 Lincoln LS, lower - radiator to thermostat, w/o oil cooler; curved radiator hose
• Fits 1996-1999 BMW 318i, lower, curved radiator hose
• Fits 1996-1999 BMW 318is, lower, curved radiator hose
• Fits 1996-1999 BMW 318ti, lower, curved radiator hose
• Fits 1996-1998 BMW Z3, lower, curved radiator hose
• Fits 1972 Ford E-100 Econoline, upper right, curved radiator hose

What It Helps Address

• Coolant leaks caused by cracked or aged radiator hose rubber
• Improper hose routing from a collapsed or misshaped hose
• Soft spots, swelling, or deterioration in the cooling hose
• Loss of coolant flow through the radiator-to-thermostat circuit
• Fitment issues when a formed replacement hose is required

Installation Notes and Tips

Verify the hose position, end inside diameters, and routing before installation. Confirm whether the vehicle is equipped with an oil cooler on Lincoln LS applications, since this hose is listed for w/o oil cooler use. Inspect hose clamps, mating necks, and nearby cooling components for wear or corrosion before reassembly.

Quality Assurance

Dayco 71916 is built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, supporting consistent material and performance requirements for radiator hose service.