Chevy GM LS 010 Main Bearings [4.8 5.3 5.7 6.0 6.2] The successful formula of offering

The successful formula of offering a complete engine drive accessory kit has now been applied to the Serpentine with Speedmaster pulley systems

While the GM 8

The Speedmaster Billet Command Centre sump kit uses the stock low-pressure

The dual plane

Their strong die-cast aluminum design ensures an excellent gasket seal and dissipates heat better than many other covers

Chevy GM LS 010 Main Bearings [4.8 5.3 5.7 6.0 6.2] The successful formula of offeringThese 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.