Engine code ALH

Fig 1: Exploded View Of Identifying Exhaust Gas Recirculation System Components (ALH)

Courtesy of VOLKSWAGEN UNITED STATES, INC.

1 - Intake manifold 

2 - O-ring 

• Always replace

3 - Intake manifold 

• With EGR valve and regulator flap

4 - EGR Vacuum Regulator Solenoid Valve 

• Component of intake manifold
• Can only be replaced as complete unit with intake manifold
• Checking. Refer to Exhaust Gas Recirculation (EGR) valve, checking 
• Check activation. Refer to 01 ON BOARD DIAGNOSTIC (OBD) from M.Y. 99-01 or 01 ON BOARD DIAGNOSTIC (OBD) from M.Y. 2002 and on

5 - 10 Nm 

6 - From charge air cooler 

7 - Gasket 

• Always replace

8 - 25 Nm 

9 - Exhaust manifold 

10 - Connecting pipe