buffer (bÅ­f'Ér) Chemistry A substance that prevents change in the acidity of a solution when an acid or base is added to the solution or when the solution is diluted.
These Ford Racing Performance Head Gaskets are specifically designed for use with cast iron or aluminum cylinder heads on a Ford 289, 302, 5.0L, or 351 Windsor V8 engine.
The exhaust manifold is similar, but is installed in between the cylinder head and the exhaust manifold. When these gaskets fail, they can create compression issues, and reduce engine efficiency. Typically these gaskets do not fail when a vehicle is properly maintained with routine maintenance.