INA Camshaft Follower - 4200172100 is a heavy-duty camshaft follower designed for reliable performance in a wide range of engine applications. It features a hardened steel body for superior strength and durability, and a heat-treated black oxide finish for corrosion resistance. The follower is designed with precision-ground needle bearings for low friction, and comes with a grease fitting for easy lubrication. It is constructed to OE specifications for a precise fit and reliable operation.