Dayco 71878 Radiator Coolant Hose - Upper

Durable Radiator Coolant Hose for Chevrolet and GMC Vehicles

The Dayco Curved Radiator Hose 71878 is engineered to provide reliable coolant flow for select Chevrolet, GMC, Isuzu, and Oldsmobile models. Designed with quality EPDM material and protective features, this hose supports efficient engine cooling in vehicles like the Chevrolet Blazer and GMC Jimmy.

• Constructed from durable EPDM material for heat and chemical resistance
• Black color with a curved design for precise fitment
• Both ends have a 1 5/16 inch inside diameter for consistent coolant flow
• Includes integrated heat shield to protect against engine heat
• Protective sleeve enhances hose durability and lifespan
• Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Single inside diameter hose type with 21-inch trunk height

About the Dayco Curved Radiator Hose Product Line

The Curved Radiator Hose line by Dayco focuses on delivering hoses that match the original equipment specifications for coolant systems requiring precise bends and fitment. This product line ensures compatibility with various vehicle models by incorporating features like heat shields and protective sleeves, which help maintain hose integrity under demanding engine conditions. The 71878 part is a representative example designed for specific GM and Isuzu trucks and SUVs.

Detailed Product Description

The Dayco 71878 radiator coolant hose is made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals. Its black curved design allows for an exact fit in the cooling system of vehicles such as the Chevrolet S10 and GMC Sonoma. Both ends of the hose have an inside diameter of 1 5/16 inches, ensuring a secure connection to radiator and engine fittings. The integrated heat shield and protective sleeve provide additional protection against engine heat and abrasion, extending the hose's service life. This hose complies with SAE J20R4 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive coolant applications.

Common Applications and Issues Addressed

• Replacement of worn or cracked radiator coolant hoses in Chevrolet Blazer and GMC Jimmy
• Resolving coolant leaks caused by hose deterioration or damage
• Preventing overheating issues due to compromised coolant flow
• Upgrading to a hose with heat shielding for improved durability in high-temperature environments
• Maintaining proper coolant system pressure and flow in Isuzu Hombre and Oldsmobile Bravada

Installation Notes and Tips

• Ensure the engine is cool before removing the old hose to avoid burns
• Check hose clamps and replace if corroded or damaged for a secure fit
• Verify the hose routing matches the original to prevent kinks or interference
• Inspect surrounding components for wear or damage during installation
• Use appropriate tools to avoid damaging the hose or fittings

Quality Assurance and Warranty

Dayco manufactures the 71878 radiator coolant hose to meet strict SAE specifications, ensuring reliable performance in compatible Chevrolet, GMC, Isuzu, and Oldsmobile vehicles. The hose is constructed with materials designed to withstand typical engine compartment conditions. Warranty details should be confirmed with the original equipment manufacturer or distributor, as coverage may vary.