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This high quality billet piece replaces the thin factory thermostat housing that usually rusts out.
Here is another beautiful piece that not only looks good but it also improves cooling.DISCONTINUED
The older these cars get the more of these parts crack or break. A perfect replacement (screws & gaskets included).
Same quality piece that we offer for the GN with the right vacuum port for the TTA brake system.
Many Buick owners have or will experience coil pack failure. Commonly they will cause your car to miss or cough under boost.
Has a billet oil filler neck & a large reusable filter. Allows your crankcase to breathe easier.
One of the first upgrades that should be made on a GN. Eliminates the factory breather & keeps your intercooler from filling with oil.
Helps minimize crankcase pressure by not allowing boost to leak by like the factory PCV can.
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