MPA Electrical 14778 Alternator

Remanufactured Bosch Alternator for Volkswagen and Audi

MPA Electrical Part Number 14778 is a remanufactured 12-volt alternator built around Bosch specifications for charging-system service. It delivers 90 amps, uses an internal regulator, and is configured with an external fan, clockwise rotation, and no pulley.

This remanufactured alternator is a direct replacement for select Volkswagen Cabriolet, Fox, Golf, Jetta, Quantum, Vanagon, Rabbit Convertible, and Audi 4000, 4000 Quattro, Quattro, and Coupe applications. Part number 14778 is also cross-referenced to Four Seasons 14992 for the same application.

Key Features

• 90 amp output for 12-volt charging systems
• Remanufactured MPA Electrical alternator
• Built to Bosch alternator specifications
• Internal voltage regulator
• External fan design
• Clockwise rotation
• Without pulley
• Clock position: 9:00

Fitment Details

• Fits 1985-1993 Volkswagen Cabriolet, w/ AC, w/ spade type D+ terminal; remanufactured.
• Fits 1987-1993 Volkswagen Fox, w/ AC, w/ spade terminal; remanufactured.
• Fits 1985-1986 Audi Quattro, without air conditioning; remanufactured.
• Fits 1984-1985 Audi 4000, remanufactured.
• Fits 1985 Audi 4000 Quattro, optional, w/ 2 holes on adjusting ear, w/ spade terminal; remanufactured.
• Fits 1985 Audi Coupe, without air conditioning; remanufactured.
• Fits 1985 Volkswagen Golf, with air conditioning; remanufactured.
• Fits 1984-1985 Volkswagen Jetta, with air conditioning; remanufactured.
• Fits 1985 Volkswagen Quantum, without air conditioning; remanufactured.
• Fits 1984-1985 Volkswagen Quantum, with air conditioning; remanufactured.
• Fits 1983-1985 Volkswagen Vanagon, remanufactured.
• Fits 1984 Audi 4000 Quattro, remanufactured.
• Fits 1984 Volkswagen Rabbit Convertible, with air conditioning; remanufactured.

What This Alternator Helps Resolve

• Low battery charging output
• Battery warning light illumination
• Dim lights caused by weak alternator performance
• Charging-system voltage instability
• Alternator failure on Bosch-equipped Volkswagen and Audi vehicles

Installation Notes and Tips

Verify the vehicle’s air-conditioning configuration, terminal style, adjusting-ear layout, and pulley setup before installation. This MPA Electrical 14778 alternator is supplied without a pulley, so the existing application-specific pulley arrangement must be confirmed during replacement. Match the 9:00 clock position, clockwise rotation, and 12-volt electrical requirements to the original unit.

Quality Assurance

MPA Electrical remanufactured parts are rebuilt for charging-system replacement service using Bosch-based alternator architecture. Part number 14778 is intended for direct-fit replacement on the listed Volkswagen and Audi applications, with fitment coverage spanning 1983-1993 model years.