URO 1235010082 Radiator Coolant Hose - Upper

Mercedes-Benz Upper Radiator Hose

This URO radiator coolant hose is a direct-fit replacement for select Mercedes-Benz diesel applications that use an upper hose routing. It is precision-molded to OE dimensions for straightforward installation and consistent fitment on 1977-1985 Mercedes-Benz 300D, 300SD, and 300TD models.

• Fits 1982-1985 Mercedes-Benz 300D, upper
• Fits 1981-1985 Mercedes-Benz 300SD, upper
• Fits 1981-1985 Mercedes-Benz 300TD, upper
• Fits 1977-1981 Mercedes-Benz 300D, upper, from 133346
• Fits 1980 Mercedes-Benz 300TD, upper, from 004444
• Fits 1979 Mercedes-Benz 300TD, upper, chassis range: from 004444
• EPDM construction resists engine heat, ozone, and electrochemical degradation
• Temperature rating from -40°F to 275°F (-40°C to 135°C)
• 24-month, unlimited mileage warranty

Key Features

• Guaranteed fitment for the listed Mercedes-Benz diesel applications
• OE-shaped, precision-molded profile for easier installation
• ECD-resistant EPDM material helps reduce internal rubber breakdown
• Built for coolant system service in high-heat engine environments
• URO part number 1235010082 for catalog and cross-reference use

Detailed Description

URO 1235010082 is an upper radiator coolant hose for select Mercedes-Benz 300D, 300SD, and 300TD models. It is formed to OE dimensions and shape, which helps maintain the original hose routing and connection points on the cooling system. This part cross-references Dorman HELP 20795 for the same application.

The hose uses durable EPDM material with resistance to electrochemical degradation, a common concern in cooling systems where coolant condition and electrical activity can affect rubber from the inside out. The temperature range supports operation in cold-start conditions and sustained engine heat.

Common Cooling System Issues

• Cracked or hardened upper radiator hose
• Coolant seepage at the hose body or connection points
• Swelling, soft spots, or hose collapse under heat
• Incorrect hose shape causing routing or fitment problems
• Cooling system maintenance on aging Mercedes-Benz diesel models

Installation Notes and Tips

Verify the vehicle year, model, and chassis range before ordering, especially on 1977-1981 300D and 1979-1980 300TD applications with production breakpoints. Inspect hose clamps, thermostat housing, and radiator necks before installation, and replace any worn sealing surfaces to support a proper coolant seal. Confirm the hose orientation matches the upper radiator position before filling and bleeding the cooling system.

Quality Assurance

This URO radiator hose is backed by a 24-month unlimited mileage warranty. It is manufactured for guaranteed fitment and built to OE-style dimensional standards for the listed Mercedes-Benz applications.