Hella 004241131 Charging System Voltage Regulator

Charging System Voltage Regulator for Bosch Applications

Hella 004241131 is a 14V charging system voltage regulator built for Bosch alternator applications that use resistance. It regulates alternator output to help maintain stable charging voltage in 12V vehicles, including select Audi and Volkswagen models.

Key Features

• 14V voltage regulator for Bosch alternator systems
• Operating voltage: 14.1V
• Rated voltage: 12V
• Alternator type: with resistance
• Direct replacement style for charging system service

Detailed Description

This Hella voltage regulator, part number 004241131, is used in charging systems where consistent alternator control is required to support battery charging and electrical system operation. It is specified for Bosch alternator applications and is listed across a wide range of Audi and Volkswagen vehicles, including Audi Cabriolet, Audi 80, Audi 100, Audi 200, Audi 4000, Audi 90, Audi Coupe, Audi Quattro, Audi V8 Quattro, and Volkswagen Cabriolet, Golf, Jetta, Passat, Corrado, Fox, Quantum, and Vanagon. This part cross-references Bosch 15024 and 17202 for the same application.

What It Is Used For

• Correcting unstable charging voltage
• Addressing battery warning light concerns tied to regulator failure
• Restoring proper alternator output control
• Resolving overcharging or undercharging conditions
• Supporting reliable electrical performance in Bosch-based charging systems

Installation Notes and Tips

Verify Bosch alternator compatibility before installation and match the regulator to the vehicle’s 12V charging system requirements. Confirm the application against the part number 004241131 and the vehicle’s original regulator specification. Because fitment spans multiple Audi and Volkswagen platforms, checking the alternator type and electrical connector details before service is recommended.

Quality Assurance

Hella is a recognized automotive electrical brand, and this regulator is built to meet the specified Bosch application requirements for charging system service.

Fitment

• Fits 1995 Audi Cabriolet, N/A
• Fits 1991-1994 Audi V8 Quattro, N/A
• Fits 1985-1993 Volkswagen Cabriolet, N/A
• Fits 1987-1993 Volkswagen Fox, N/A
• Fits 1990-1993 Volkswagen Passat, N/A
• Fits 1988-1992 Audi 80, N/A
• Fits 1990-1992 Volkswagen Corrado, N/A
• Fits 1985-1992 Volkswagen Golf, N/A
• Fits 1985-1992 Volkswagen Jetta, N/A
• Fits 1989-1991 Audi 100, N/A
• Fits 1989-1991 Audi 200, N/A
• Fits 1988-1991 Audi 90, N/A
• Fits 1985-1991 Volkswagen Vanagon, N/A
• Fits 1985-1988 Volkswagen Quantum, N/A
• Fits 1984-1987 Audi 4000, N/A
• Fits 1985-1987 Audi Coupe, N/A
• Fits 1985 Audi Quattro, N/A