Cummins 6B 5.9L, 6.7L Main Bearing Set, Standard, 3802070, 4955352

Kit Contains the following components:6 qty Upper Main Bearing 3901090 (Replaces 5287907)7 qty Main Bearing 3901150 (Replaces 5287908)1 qty Thrust Bearing 3906230 (Replaces 3978822)
Cross Reference with Part Numbers: 3800290, 3802070, 4955352, 3357480, 4955853
Our engine bearings are made of a sintered tri-metal with a base alloy of copper/lead and tin with a nickel dam and Babbitt top layer. This advanced technology alloy has a higher load carrying capacity than aluminum or other copper/lead alloy. As a result of this, our rod and main bearings provide longer life in normal operation and significantly improved fatigue resistance under extreme operating conditions. We also have available engine bearings made of aluminum alloy and other materials.
Our Cummins parts are made with premium OEM quality materials to ensure strength and durability. We design and manufacture these parts to withstand the extreme conditions found in todays heavy duty equipment.