Chevy GM LS STD Main Bearings [4.8 5.3 5.7 6.0 6.2] filter element

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making them ideal for withstanding the rigors of any demanding environment

circuit racing and made to withstand extreme use

Aluminum also promotes faster heat dissipation for further cooling of your transmission

Chevy GM LS STD Main Bearings [4.8 5.3 5.7 6.0 6.2] filter elementThese Speedmaster main bearings are just what you need to freshen up your engine. Why? They use silicon aluminum bi metal construction. Silicon aluminum is the choice for many of today's engine manufacturers because of its high fatigue strength and superior temperature threshold. Bearing wear is dramatically reduced and the fatigue strength is greatly improved.