Continental 66334 Radiator Coolant Hose - Upper

Continental Molded Radiator Coolant Hose

Continental 66334 is a molded radiator coolant hose built for the vehicle cooling system and shaped for exact OEM-style routing. It transfers glycol-based coolant through the system with an EPDM tube and cover plus synthetic reinforcement that meets or exceeds SAE 20R4EC Class D1 requirements.

Compatible with Lexus LS460 and Lexus LS600h upper hose applications, this molded hose is formed to match the original configuration for a precise fit. Continental Molded hose construction supports clean replacement on the specified Lexus cooling layouts, and part number 66334 is also referenced for the same application as Gates 23478.

Key Features

• Part number 66334 radiator coolant hose for upper cooling-system routing
• EPDM tube and cover with synthetic reinforcement
• Meets or exceeds SAE 20R4EC Class D1 specifications
• Exact OEM configuration for fit and routing accuracy
• Hose 1 inside diameter: 1.440 in.
• Hose 1 length: 8.310 in.
• End 2 hose inside diameter: 1.440 in.

Product Details

Continental’s Molded line focuses on replacement hoses formed to match original equipment geometry. For this application, 66334 is a molded upper radiator coolant hose engineered around the listed dimensions and OE configuration, helping maintain proper coolant flow through the cooling system on Lexus LS460 and Lexus LS600h models. The molded shape reduces guesswork during replacement and supports a direct-fit installation on the specified upper hose location.

This part cross-references Gates 23478 for the same application.

Common Cooling System Issues Addressed

• Cracked or deteriorated upper radiator hose
• Coolant leakage at the hose body or connection points
• Incorrect hose routing from a previous repair
• Restricted coolant transfer caused by a damaged hose
• Fitment problems when replacing an OE-shaped upper hose

Installation Notes

• Verify the vehicle is a 2009-2017 Lexus LS460 upper hose application or a 2009-2016 Lexus LS600h upper hose application before installation.
• Confirm hose diameter and molded shape match the original routing.
• Inspect adjoining clamps, necks, and coolant condition during replacement.
• Bleed the cooling system after installation to remove trapped air.

Quality Assurance

Continental manufactures this hose to meet or exceed SAE 20R4EC Class D1 specifications, using EPDM construction and synthetic reinforcement for cooling-system service. Part number 66334 is built to the listed OEM configuration for accurate fitment on the specified Lexus applications.