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Discussion Starter · #1 ·
The casting that goes under the timing belt that bolts to the head. The thermostat bolts to it.
As fitted to 2.0 8v engines in Astra GTE, Cavalier, Cavalier Sri 130, Carlton etc.

Looking at the engine timing belt:
the casting is held on with two bolts (top left, bottom right).
On the left two small water pipes connect.
There is an ECU temperature sensor at the top left.
The thermostat bolts into a large hole on the right.
A small water pipe connects on the top right.
The dash temperature sensor bolts in on the top right.
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