Vemo V20-72-0488 Engine Coolant Temperature Switch

Engine Coolant Temperature Switch for BMW

The Vemo V20-72-0488 engine coolant temperature switch is a direct-fit cooling system electrical component for select BMW applications. It uses a 2-pin connection and an M14 x 1.5 thread size, with a 35°C switch point for accurate coolant temperature signaling.

Compatible With BMW 325Ci, 330Ci, X5, 320i, 325i, 325xi, 330i, 330xi, 525i, 530i, Z4, 540i, M5, Z3, 740i, 740iL, 750iL, 323Ci, 323i, 328Ci, 328i, and 528i applications across the listed model years. Part number V20-72-0488 is also referenced for OE-style replacement needs on these vehicles.

Key Features

• Engine coolant temperature switch for cooling system temperature signaling
• 35°C switch point for specified thermal activation
• M14 x 1.5 thread size for proper threaded fitment
• 2-pole electrical design with 2-pin connector layout
• Includes sealing as noted in fitment data
• Compact dimensions: 41.6 mm height, 19 mm length, 21.7 mm width
• Vemo V20-72-0488 replacement part for select BMW cooling system applications

Product Details

VEMO V20-72-0488 is an engine coolant temperature switch built for BMW cooling system monitoring and temperature-based electrical control. The switch point is set at 35°C, and the unit uses a 2-pole configuration with an M14 x 1.5 thread. Its compact size and sealing specification support a precise replacement on the listed BMW models, including BMW 325Ci, 330Ci, X5, 525i, and 530i. This part cross-references OE numbers 1 741 900 and 12 52 1 741 900 for the same application.

What It Helps Address

• Incorrect coolant temperature signal output
• Cooling fan or temperature-triggered circuit faults
• Warning light issues related to coolant temperature sensing
• Hard-to-diagnose cooling system electrical problems
• Replacement needs for a worn or failed BMW coolant temperature switch

Installation Notes and Tips

Verify the thread size, connector style, and switch point before installation. Confirm the vehicle’s OE reference and compare the existing sensor or switch to V20-72-0488 to ensure proper match. Clean the mounting area and inspect the sealing surface before threading the new switch into place. Use the vehicle service procedure for coolant system handling and electrical connection checks.

Quality Assurance

VEMO is the brand line used for this replacement cooling system component, and the part is specified with OE-reference fitment data for the listed BMW applications. The published dimensions, connector count, thread size, and switch point provide the key identification details needed for accurate ordering and replacement.