Febi 23740 Engine Coolant Thermostat Housing

Febi 23740 Engine Coolant Thermostat Housing

Febi 23740 is an engine coolant thermostat housing for select BMW 528i applications. It is a direct-fit cooling system replacement for 1997 BMW 528i and 1998 BMW 528i models built up to 05/1998, helping restore proper thermostat mounting and coolant flow control.

Key Features

• Engine coolant thermostat housing for the cooling system
• Fits 1997 BMW 528i
• Fits 1998 BMW 528i, to construction year 05/1998
• Febi part number 23740 for catalog and service reference
• Cross-reference: BMW OE part number 11 53 1 740 478

Detailed Description

This Febi thermostat housing is built for BMW 528i cooling system service where the thermostat housing must maintain a secure seal and proper coolant routing. It is listed for 1997 BMW 528i and 1998 BMW 528i vehicles built through 05/1998, making it a focused replacement for the correct engine coolant thermostat housing application. Use Febi 23740 when replacing a worn, cracked, or leaking housing on the BMW 528i.

Common Issues It May Solve

• Coolant leaks at the thermostat housing
• Cracked or warped housing surfaces
• Improper thermostat seating or sealing
• Cooling system temperature control problems related to housing failure
• Service issues on BMW 528i cooling system repairs

Installation Notes and Tips

Verify engine and build date before ordering, especially for 1998 BMW 528i models with a cutoff of 05/1998. Inspect the thermostat, sealing surfaces, and adjacent cooling components during installation. Follow BMW cooling system service procedures and refill/bleed the system according to factory specifications after replacement.

Quality Assurance

Febi is an established aftermarket brand known for OE-style replacement parts. Part number 23740 is cataloged for the specified BMW 528i fitment and cross-references BMW OE 11 53 1 740 478 for the same application.