Dayco 71777 Radiator Coolant Hose - Lower or Upper

Curved radiator hose for OE-style cooling service

Dayco 71777 is a curved radiator coolant hose built for upper and lower cooling-system routing where the hose path requires a formed bend. Made from EPDM rubber and finished in black, it provides a direct replacement option for select Chevrolet, Chrysler, Dodge, Plymouth, Oldsmobile, and Pontiac applications. This Dayco Curved Radiator Hose 71777 is sized with a 1 9/32-inch inside diameter at both ends.

Key features

• EPDM construction for coolant-hose service
• Black finish for a clean OE-style appearance
• Single I.D. hose design with 1 9/32-inch inside diameter at both ends
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• No heat shield and no protective sleeve
• Curved radiator hose profile for formed routing

Product details

Dayco 71777 is part of the Curved Radiator Hose line, a product line focused on formed coolant hoses that follow factory routing without unnecessary bulk. The EPDM rubber construction is suited for radiator coolant transfer, while the curved shape helps match the original hose path in vehicles that use a bent upper or lower hose layout. This part number is a practical OE-style replacement for cooling-system maintenance on vehicles such as the Chevrolet Cruze, Chevrolet Cruze Limited, Chrysler Cirrus, Dodge Stratus, Plymouth Breeze, Chevrolet Lumina, Chevrolet Monte Carlo, Oldsmobile Cutlass Supreme, and Pontiac Grand Prix. This part cross-references Gates 21394 for the same application.

Vehicle fitment

• Fits 2016 Chevrolet Cruze Limited, upper; Curved Radiator Hose
• Fits 2011-2015 Chevrolet Cruze, upper; Curved Radiator Hose
• Fits 2000 Chrysler Cirrus, lower; Curved Radiator Hose
• Fits 1995-2000 Dodge Stratus, lower; Curved Radiator Hose
• Fits 1996-2000 Plymouth Breeze, lower; Curved Radiator Hose
• Fits 1994-1997 Chevrolet Lumina, upper; Curved Radiator Hose
• Fits 1995-1997 Chevrolet Monte Carlo, upper; Curved Radiator Hose
• Fits 1994-1996 Oldsmobile Cutlass Supreme, upper; Curved Radiator Hose
• Fits 1994-1996 Pontiac Grand Prix, upper; Curved Radiator Hose

Installation notes and tips

Verify the hose routing, end diameters, and position before installation. This hose is listed for upper and lower applications depending on vehicle fitment, so match the vehicle-specific routing exactly. Inspect hose clamps, radiator necks, and adjoining coolant pipes for wear, corrosion, or deformation before installing the replacement hose.

Quality assurance

Dayco manufactures this hose to meet SAE J20R4 Class D-1 and SAE J1684 Type EC requirements, supporting consistent coolant-hose performance in listed applications. Confirm fitment against the vehicle year, make, model, and hose position before purchase.