Intake Manifold: Application and ID

NOTE: When removing and installing intake manifold the mixture control unit with air guide housing does not need to be removed.

Changes on intake manifold
In order to standardize with the USA design the following parts have been changed:
a) Intake manifold upper part
Vacuum connection for automatic transmission changed.
b) Intake manifold lower part and throttle valve housing
Fixing Of the throttle valve housing to the intake manifold lower part is effected with MG screws
(formerly M8).
c) Air guide housing:
The flange of the air guide housing is made of light alloy, the air guide housing of rubber.

Replacement Parts:

Supply responsibility Werk 50 (PEW Sindel fingen)
The former parts are carried over.

Installation Engine 116: April 1981:

Installation engine 117
Installation on engine 117 took place in stages. The following listing shows the respective installation data for the current version.

First Installation: April/May 1981:

Second Installation: June 1981:

Final Installation: Starting August 1981:

d) Intake manifold gasket.





The cross-section of gasket had to be enlarged. When renewing the gasket make sure that the respectively valid gasket for the respective engine is installed, The former gasket is still available in spare parts depot.

Start of series: August 1981


Engines without Air Injection:





On engines with ET cylinder heads. which have 4 bores for the air injection to the exhaust valve (arrow), the latter have to be sealed with aluminium tapered plugs.

This ensures that no exhaust gas reaches the intake side via the bores (poor idle).