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.
Ferrari specific: There is no rubber cover for the factory gas pedal. Be sure to allow clearance (~1/8) between the bottom of the aluminum gas racing pedal and the top of the plastic trim that surrounds the base of the factory gas pedal. A 30mm long flat head screw is supplied for the lower 348/355 gas pedal mounting hole.