Mazda Rotary Gilmer Crank Alternator and Water Pump Pulleys Only These Speedmaster main bearings are

These Speedmaster main bearings are just what you need to freshen up your engine

Now you don't have to waste your time searching at swap meets or cleaning and painting less-than-desirable old brackets

They are designed to position the starter to ensure proper starter drive to flywheel ring gear alignment

Speedmaster Aluminum cylinder heads use our "Gravity Die Cast" process

and their quality construction and superior materials will help to protect your vital engine parts from the harmful effects of friction

Mazda Rotary Gilmer Crank Alternator and Water Pump Pulleys Only These Speedmaster main bearings areMachined from billet aluminum.