URO 3531478 Engine Coolant Thermostat Housing Cover

Volvo Thermostat Housing Cover

Replace a cracked or warped coolant outlet with the URO 3531478 engine coolant thermostat housing cover. This OE-style housing cover is built for direct fitment on select Volvo applications, including the 1993-1997 Volvo 850 and 1998 Volvo C70, S70, and V70.

Key Features

• OE-dimensioned housing cover for bolt-on installation
• High-quality alloy or composite construction resists flange warping and cracking
• Helps maintain secure coolant connections under heat cycling and system pressure
• Includes temperature sensor or bleed ports where applicable
• Backed by a 24 month unlimited mileage warranty

Detailed Description

The URO 3531478 thermostat housing cover is engineered for Volvo cooling system service where the original cover has become brittle, distorted, or damaged. Heat cycling and coolant pressure can weaken the housing over time, leading to leaks at the flange or seal surface and creating the risk of coolant loss and overheating. This replacement is manufactured to OE dimensions for a direct fit on the Volvo 850, Volvo C70, Volvo S70, and Volvo V70 listed in the fitment data. This part cross-references URO-002698 for the same application.

What It Helps Fix

• Coolant leaks at the thermostat housing cover
• Cracked or embrittled housing material
• Warped flange surfaces that prevent sealing
• Loss of coolant from pressure-related housing failure
• Overheating caused by coolant system leakage

Installation Notes

Verify engine and cooling system fitment before installation. Inspect the thermostat, seal surfaces, and adjacent coolant hoses for wear or contamination before reassembly. If the housing includes a temperature sensor or bleed port on your application, transfer or connect those components as required by the vehicle configuration.

Quality Assurance

URO backs this thermostat housing cover with a 24 month unlimited mileage warranty. The part is manufactured from high-quality materials and built to OE dimensions for reliable coolant connection and service fitment.