MTC Ronak 1109 Engine Coolant Level Sensor

Engine Coolant Level Sensor for BMW Cooling Systems

The MTC Ronak 1109 engine coolant level sensor is a direct-fit cooling system component for BMW applications that use a coolant reservoir level warning sensor. With a 95 mm length and OE cross-reference 61-31-1-384-739, this sensor is built for accurate coolant level monitoring in the reservoir.

Compatible With BMW 328i, 328is, 320i, 325i, 325is, 525i, 525iT, and M3 applications across the listed model years, the MTC Ronak 1109 supports proper coolant level warning function in the vehicle’s cooling system.

Key Features

• Engine coolant level sensor for BMW cooling system service
• Length: 95 mm
• Part number: 1109
• Cross-references OE number 61-31-1-384-739 for the same application
• Fits multiple BMW 3 Series and 5 Series models from 1989-1996

Detailed Description

The MTC Ronak 1109 is an engine coolant level sensor used to monitor coolant level in the reservoir and trigger the vehicle’s warning system when coolant drops below the proper range. This part is relevant for BMW owners servicing cooling system faults on models such as the BMW 328i, BMW 325i, and BMW M3, as well as select 525i and 525iT applications. The 95 mm length should be matched to the original sensor specification during replacement.

This part cross-references OE number 61-31-1-384-739 for the same application.

Common Issues This Part Can Address

• Coolant level warning light staying on
• Intermittent or inaccurate coolant level readings
• Failed coolant reservoir sensor diagnosis
• Cooling system warning messages related to low coolant level
• Replacement needs during BMW cooling system maintenance

Installation Notes and Tips

Verify the original sensor length and connector style before installation. Inspect the coolant reservoir, sealing surfaces, and electrical connector for wear or contamination before installing the new sensor. After installation, refill and bleed the cooling system according to BMW service procedures to confirm proper coolant level monitoring.

Quality Assurance

MTC Ronak cooling system sensors are cataloged for OE-style replacement use, and this part is listed with a direct OE cross-reference for application matching.

Fitment

• Fits 1996 BMW 328i, N/A, To 02-29-1996
• Fits 1996 BMW 328is, N/A, To 02-29-1996
• Fits 1995 BMW 320i, N/A, To 05-31-1995
• Fits 1995 BMW 325i, N/A, To 05-31-1995
• Fits 1992-1995 BMW 325i, N/A
• Fits 1995 BMW 325is, N/A, To 05-31-1995
• Fits 1989-1995 BMW 525i, N/A
• Fits 1995 BMW M3, N/A, To 05-31-1995
• Fits 1992-1994 BMW 320i, N/A
• Fits 1992-1994 BMW 325is, N/A
• Fits 1994 BMW M3, N/A
• Fits 1993 BMW 525iT, N/A