Vaico V20-7149 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing for BMW Applications

VAICO V20-7149 is an engine coolant thermostat housing built with a plastic housing construction and application-specific dimensions for select BMW cooling system repairs. It is a direct-fit replacement for vehicles that need a thermostat housing matched to the original layout and mounting profile.

Key Features

• Engine coolant thermostat housing for cooling system service
• Plastic construction
• Dimensions: 185 mm length, 95 mm width, 56.5 mm height
• Weight: 0.236 kg
• VAICO brand line for European vehicle replacement parts
• Part number V20-7149 for ordering and fitment verification

Detailed Description

VAICO V20-7149 is an engine coolant thermostat housing for BMW cooling system repair and maintenance. The housing is made from plastic and measures 185 mm in length, 95 mm in width, and 56.5 mm in height, helping match the original installation envelope on supported vehicles. This part number is listed with interchange references including Gates 23741 and OE-style cross references such as 1 722 531 and 1 722 853 for the same application. Compatible BMW fitment includes 1991-1995 525i, 1992-1995 325i and 325is, 1993-1995 740i and 740iL, 1994-1995 530i, 540i, and 840Ci, 1995-1999 M3, 1996-1999 328i and 328is, 1997-2000 Z3, and 1998-1999 323i and 323is. VAICO V20-7149 is a practical replacement choice when restoring proper coolant routing and thermostat housing integrity on BMW 3 Series, 5 Series, 7 Series, 8 Series, M3, and Z3 models.

What This Part Helps Address

• Coolant leaks at a cracked or worn thermostat housing
• Overheating caused by housing damage or sealing surface wear
• Thermostat housing replacement during cooling system service
• Restoration of proper coolant flow control on BMW engines
• Fitment replacement for aging plastic cooling system components

Installation Notes and Tips

Verify the part number V20-7149 against the original housing before installation. Inspect the mating surfaces, thermostat, and related coolant hoses for wear or contamination before reassembly. Drain the cooling system as needed, replace degraded seals or gaskets if required by the service procedure, and refill with the correct coolant mixture after installation. Bleed the cooling system carefully to remove trapped air and confirm there are no leaks after the engine reaches operating temperature.

Quality Assurance

VAICO supplies European vehicle replacement parts with application-specific fitment data and dimensional specifications to support accurate parts selection. This part cross-references Gates 23741 and OE-style references 1 722 531 and 1 722 853 for the same application.