Continental 66587 Radiator Coolant Hose - Upper

Continental 66587 Radiator Coolant Hose

Continental 66587 is a molded radiator coolant hose built for upper cooling-system routing in a wide range of GM vehicles. It uses an EPDM tube and cover with synthetic reinforcement to meet or exceed SAE 20R4EC Class D1 requirements, and its exact OEM configuration supports a direct-fit replacement.

For drivers searching for an upper radiator coolant hose for Cadillac XT5, Cadillac XT6, Chevrolet Blazer, or GMC Acadia applications, this molded Continental hose is shaped to match the original routing and connection points. The 66587 part number is also a useful reference when cross-shopping OE-style replacements for the same application.

Key Features

• Molded upper radiator coolant hose for OEM-style fitment
• EPDM tube and cover for coolant-system durability
• Synthetic reinforcement meets or exceeds SAE 20R4EC Class D1 specifications
• 1.310 in. inside diameter at both ends
• 20.790 in. hose length
• Exact OEM configuration for proper routing and alignment

Product Details

Continental Molded 66587 is designed to transfer glycol-based coolant throughout the vehicle’s cooling system while maintaining the correct molded shape for upper hose routing. The 1.310-inch inside diameter at each end and 20.790-inch overall length are important for maintaining secure connections and proper flow in the cooling circuit. This part number 66587 is a direct replacement option for vehicles that require the specified molded upper hose profile.

Continental’s molded hose line focuses on OE-style geometry and material construction, making it a practical choice for cooling-system service on Cadillac XT5, Cadillac XT6, Chevrolet Blazer, Chevrolet Impala, GMC Acadia, Cadillac XTS, Buick LaCrosse, and Buick Allure applications. This part cross-references Dayco 72540 and Febi-Bilstein 23719 for the same application.

What This Hose Helps Address

• Coolant leaks from a cracked, swollen, or aged upper radiator hose
• Restricted coolant flow caused by hose deterioration or collapse
• Improper fit from a non-molded replacement hose
• Cooling-system service on vehicles with the original upper hose routing
• Replacement needs for a hose with worn connection ends or soft spots

Installation Notes and Tips

Verify the hose diameter, molded shape, and routing against the original part before installation. Confirm the vehicle’s cooling-system configuration, especially on Cadillac XT6 and Chevrolet Blazer applications with notes for HD cooling or HD radiator exclusions. Inspect adjoining clamps, necks, and coolant passages for wear or contamination before installing the new hose.

Compatible With: Fits 2023-2025 Cadillac XT5, Upper; Fits 2017-2020 Cadillac XT5, Upper; Fits 2023-2025 Cadillac XT6, Upper; Fits 2020 Cadillac XT6, Upper; Fits 2022-2025 Chevrolet Blazer, Upper; Fits 2021 Cadillac XT6, Upper, exc. HD Cooling; Fits 2019-2021 Chevrolet Blazer, Upper, Exc. HD Radiator; Fits 2012-2020 Chevrolet Impala, Upper; Fits 2018-2020 GMC Acadia, Upper; Fits 2013-2019 Cadillac XTS, Upper; Fits 2010-2016 Buick LaCrosse, Upper; Fits 2010 Buick Allure, Upper.

Quality Assurance

Built by Continental, this molded coolant hose uses EPDM construction and synthetic reinforcement to align with SAE 20R4EC Class D1 material expectations and OE-style fitment requirements.