URO 99610623355 Engine Coolant Hose - Pipe To Thermostat Housing

Engine Coolant Hose for Porsche 911

This URO engine coolant hose is molded to OE shape for accurate fitment on the Porsche 911 cooling system. Built from EPDM and rated for a wide temperature range, it is made for the pipe-to-thermostat housing connection on select 1999-2005 Porsche 911 models.

• Fits 2000-2005 Porsche 911, pipe to thermostat housing
• Fits 1999 Porsche 911, pipe to thermostat housing, engine range from 66X01815
• Molded hose profile for OE-style routing and fit
• EPDM construction with ECD resistance to help reduce electrolysis-related rubber breakdown
• Heat- and ozone-resistant for demanding engine bay conditions
• Temperature rating from -40°F to 275°F (-40°C to 135°C)
• URO part number 99610623355

Application Details

Use this coolant hose when replacing the pipe-to-thermostat housing hose on a Porsche 911. The molded design follows the original hose shape, which helps maintain proper routing and connection geometry in the cooling circuit. This part number, 99610623355, also cross-references URO-004661 for the same application.

Common Repair Symptoms

• Coolant seepage at the hose connection
• Cracking, swelling, or hardening of the original hose
• Cooling system leaks near the thermostat housing
• Degraded hose material from heat, ozone, or electrochemical exposure
• Improper hose fit after prior replacement

Installation Notes

Verify the vehicle’s model year and engine range before ordering, especially for 1999 Porsche 911 applications. Inspect the mating pipe and thermostat housing surfaces for wear or residue before installation, and confirm the hose is routed without twist or kinks. This hose is molded for the specified OE-style path on the Porsche 911 cooling system.

Quality Assurance

URO backs this coolant hose with a 24-month, unlimited mileage warranty. The EPDM material is selected for durability in engine cooling service, with resistance to heat, ozone, and electrochemical degradation.