Vemo V10-77-1048 Charging System Voltage Regulator

Charging System Voltage Regulator for Bosch Alternators

The Vemo V10-77-1048 is a charging system voltage regulator for Bosch alternator applications in select Audi and Volkswagen vehicles. It is built to match the OE reference 070903803B and supports stable alternator output for consistent electrical system performance.

With a compact 109 mm length, 63 mm width, and 38 mm height, this VEMO regulator is sized for the specified Bosch alternator applications used across multiple Audi A3, A4, A6 Quattro, TT, and Volkswagen models. The VEMO product line focuses on OE-style electrical replacement parts for charging and starting systems.

Key Features

• Charging system voltage regulator for Bosch alternator applications
• OE reference: 070903803B
• Part number: V10-77-1048
• Dimensions: 109 mm length, 63 mm width, 38 mm height
• Weight: 0.770 kg
• Fits select Audi and Volkswagen models from 2000-2017

Fitment Details

• Fits 2015-2017 Volkswagen CC, N/A; Grade: Aftermarket; Bosch Alternator; With OE No. 070903803B; VEMO
• Fits 2015-2017 Volkswagen Tiguan, N/A; Grade: Aftermarket; Bosch Alternator; With OE No. 070903803B; VEMO
• Fits 2015-2016 Volkswagen Eos, N/A; Grade: Aftermarket; Bosch Alternator; With OE No. 070903803B; VEMO
• Fits 2009-2014 Volkswagen CC, N/A; Grade: Aftermarket; For Bosch Alternator; With OE No. 070903803B; VEMO
• Fits 2009-2014 Volkswagen Eos, N/A; Grade: Aftermarket; For Bosch Alternator; With OE No. 070903803B; VEMO
• Fits 2008-2014 Volkswagen GTI, N/A; Grade: Aftermarket; For Bosch Alternator; With OE No. 070903803B; VEMO
• Fits 2009-2014 Volkswagen Tiguan, N/A; Grade: Aftermarket; For Bosch Alternator; With OE No. 070903803B; VEMO
• Fits 2011-2013 Audi A3, N/A; Grade: Aftermarket; For Bosch Alternator; With OE No. 070903803B; VEMO
• Fits 2011-2013 Audi A3 Quattro, N/A; Grade: Aftermarket; For Bosch Alternator; With OE No. 070903803B; VEMO
• Fits 2010 Volkswagen Jetta, N/A; Grade: Aftermarket; For Bosch Alternator; With OE No. 070903803B; VEMO
• Fits 2009 Audi TT, N/A; Grade: Aftermarket; With OE No. 070903803B; VEMO
• Fits 2009 Audi TT Quattro, N/A; Grade: Aftermarket; With OE No. 070903803B; VEMO
• Fits 2008 Volkswagen Passat, N/A; Grade: Aftermarket; For Bosch Alternator; With OE No. 070903803B; VEMO
• Fits 2007 Volkswagen Touareg, N/A; Grade: Aftermarket; For Bosch Alternator; With OE No. 070903803B; VEMO
• Fits 2000-2006 Volkswagen Golf, N/A; Grade: Aftermarket; With OE No. 070903803B; VEMO
• Fits 2004-2006 Volkswagen Golf, N/A; Grade: Aftermarket; For Bosch Alternator; With OE No. 070903803B; VEMO
• Fits 2005 Audi A4, N/A; Grade: Aftermarket; For Bosch Alternator; New; With OE No. 070903803B; VEMO
• Fits 2005 Audi A4 Quattro, N/A; Grade: Aftermarket; For Bosch Alternator; New; With OE No. 070903803B; VEMO
• Fits 2003-2004 Audi A4, N/A; Grade: Aftermarket; For Bosch Alternator; With OE No. 070903803B; VEMO
• Fits 2002-2004 Audi A6 Quattro, N/A; Grade: Aftermarket; For Bosch Alternator; With OE No. 070903803B; VEMO

What This Part Helps Address

• Charging voltage that is unstable or outside normal range
• Battery warning light related to alternator regulation
• Dim lights or fluctuating electrical output
• Alternator performance issues on Bosch-equipped systems
• Electrical system complaints in Audi A3, Audi TT, Volkswagen GTI, and related models

Installation Notes and Tips

Verify the alternator manufacturer and OE number before ordering. This Vemo V10-77-1048 is specified for Bosch alternator applications with OE No. 070903803B, so matching the alternator housing and regulator style is essential for correct installation. Confirm connector shape, mounting points, and dimensions against the removed part before service.

For search and catalog reference, this part cross-references Bosch 1V1378 and Valeo 5DR009728021 for the same application.

Quality Assurance

VEMO supplies OE-style electrical components for charging and starting system service. The V10-77-1048 is cataloged with defined dimensions, weight, and OE reference data to support accurate parts matching for Audi and Volkswagen Bosch alternator repairs.