TOPRAN Engine Coolant Thermostat 501310, Genuine Part Number Reference: 11531437085

This high-quality Topran engine coolant thermostat is a direct replacement for OEM part number 11531437085.  
Also known as a water thermostat or coolant temperature regulator, it helps maintain optimal engine operating temperature by controlling coolant flow between the radiator and engine block.  
Manufactured to meet or exceed OEM standards for reliability and thermal precision.

Key Features:
- Direct replacement for OEM part number: 11531437085  
- Also referred to as engine thermostat or coolant temperature regulator  
- Ensures consistent engine operating temperature and performance  
- High-quality construction for durability and accurate temperature control  
- Designed for quick and easy installation  

Compatible With:
BMW  
- 3 Series (E46) – Saloon, Coupe, Touring 316i, 318i, 320i, 323i, 325i, 328i, 330i (1998–2006)  
- Z3 (E36) – Roadster 1.8, 1.9, 2.0, 2.2i, 2.8, 3.0i (1995–2003)  

Compatible Engine Codes:
M43B16, M43B18, M44B19, M52B20, M52B25, M52B28, M54B22, M54B25, M54B30  

Year Range:
1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006  

This is an aftermarket replacement part, not a genuine BMW component.