Pierburg 7.21903.75.0 Turbocharger Diverter Valve

Brand	Pierburg 7.21903.75.0
Operating Mode	Electric-Pneumatic
Regulator	with pressure regulator
Technical Information Number	SI 0100
Voltage [V]	12
Fits	Volkswagen · 18 vehicles

Electric-pneumatic control. Provides responsive turbocharger diverter valve operation with a pressure regulator.

12-volt operation. Works with standard vehicle electrical systems for straightforward integration.

Cross-references 1H0906627A, 95VW12B573CB and 9057 for the same application. See all 5.

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Pierburg Turbocharger Diverter Valve 7.21903.75.0

The Pierburg 7.21903.75.0 turbocharger diverter valve is an electric-pneumatic OE-style replacement for select Volkswagen turbocharged applications. It uses a 12-volt operating system and includes a pressure regulator to help maintain proper boost control response.

Built for direct-fit service on specific Volkswagen Beetle, Golf, Jetta, and Passat models, this diverter valve is a practical choice when diagnosing boost-related drivability concerns tied to the OE No. 1H0906627A application.

Key Features

Brand: Pierburg
Part number: 7.21903.75.0
Turbocharger diverter valve for air and fuel delivery systems
Electric-pneumatic operating mode
Includes pressure regulator
12-volt electrical specification
Technical Information Number: SI 0100

Application Details

Compatible with select Volkswagen turbocharger systems, including Fits 2000-2003 Volkswagen Beetle, N/A with OE No. 1H0906627A; Fits 2000-2003 Volkswagen Golf, N/A with OE No. 1H0906627A; Fits 2000-2003 Volkswagen Jetta, N/A with OE No. 1H0906627A; Fits 1998-1999 Volkswagen Beetle, N/A with OE No. 1H0906627A; Fits 1999 Volkswagen Golf, N/A with OE No. 1H0906627A; Fits 1999 Volkswagen Jetta, N/A with OE No. 1H0906627A; and Fits 1996-1997 Volkswagen Passat, N/A from VIN # 3BV000001. This part cross-references 1H0906627A and 95VW12B573CB for the same application.

What It Helps Address

Boost pressure loss caused by a worn diverter valve
Slow or inconsistent turbo response
Compressor surge during throttle lift
Faults related to the OE diverter valve circuit
Drivability issues on turbocharged Volkswagen Beetle, Golf, Jetta, and Passat models

Installation Notes and Tips

Verify the OE number, engine setup, and VIN break before ordering, especially on 1996-1997 Volkswagen Passat applications. Confirm the 12V electrical connection and pressure regulator configuration match the original unit. For best results, inspect related vacuum, boost, and charge-air components during replacement.

Quality Assurance

Pierburg is a recognized OE supplier in engine management and air control components, and this diverter valve is built to match the specified application requirements for direct replacement service.

This part fits 18 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Liters	Cylinders	Position	Notes
2003	Volkswagen	Beetle	1.9L	L4	N/A	With OE No. 1H0906627A
2003	Volkswagen	Golf	1.9L	L4	N/A	With OE No. 1H0906627A
2003	Volkswagen	Jetta	1.9L	L4	N/A	With OE No. 1H0906627A
2002	Volkswagen	Beetle	1.9L	L4	N/A	With OE No. 1H0906627A
2002	Volkswagen	Golf	1.9L	L4	N/A	With OE No. 1H0906627A
2002	Volkswagen	Jetta	1.9L	L4	N/A	With OE No. 1H0906627A
2001	Volkswagen	Beetle	1.9L	L4	N/A	With OE No. 1H0906627A
2001	Volkswagen	Golf	1.9L	L4	N/A	With OE No. 1H0906627A
2001	Volkswagen	Jetta	1.9L	L4	N/A	With OE No. 1H0906627A
2000	Volkswagen	Beetle	1.9L	L4	N/A	With OE No. 1H0906627A
2000	Volkswagen	Golf	1.9L	L4	N/A	With OE No. 1H0906627A
2000	Volkswagen	Jetta	1.9L	L4	N/A	With OE No. 1H0906627A
1999	Volkswagen	Beetle	1.9L	L4	N/A	with OE No. 1H0906627A
1999	Volkswagen	Golf	1.9L	L4	N/A	with OE No. 1H0906627A
1999	Volkswagen	Jetta	1.9L	L4	N/A	with OE No. 1H0906627A
1998	Volkswagen	Beetle	1.9L	L4	N/A	with OE No. 1H0906627A
1997	Volkswagen	Passat	1.9L	L4	N/A	From VIN # 3BV000001
1996	Volkswagen	Passat	1.9L	L4	N/A	From VIN # 3BV000001
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Directly replaces or cross-references 5 part numbers

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

1H0906627A95VW12B573CB905710310907700377175